Pre-Feasibility Report - environmentclearance.nic.inenvironmentclearance.nic.in/writereaddata/Online/TOR/0_0_13_Feb... · Pre-Feasibility Report for proposed enhancement of Phosphoric

Pre-Feasibility Report

For proposed enhancement of Phosphoric Acid Production from 700 MTPD to 1000 MTPD P2O5 and other

auxiliaryfacilities within the Existing Fertilizer Complex, Sriharipuram, Vishakhapatnam district, Andhra Pradesh

Submitted by

Coromandel International Limited Corporate Office

Coromandel International Limited Coromandel House, Sardar Patel Road,

Secunderabad 500 003, Telangana, India. T +91 40 27842034, F +91 40 27844117

Plant Address Post No 1116, Sriharipuram,

Visakhapatnam - 530011, Malkapuram Post

Pre-Feasibility Report for proposed enhancement of Phosphoric Acid Production from 700 MTPD to 1000 MTPD P2O5 and auxiliaryfacilities within the Existing Fertilizer Complex, Sriharipuram, Vishakhapatnam district, Andhra Pradesh.

Coromandel International Limited, Visakhapatnam, February 2016

Table of ContentsExecutive Summary ........................................................................................................................... 3 1. Overview of the proposal ........................................................................................................... 1 2. Prediction of Environmental Impacts, Management Plant and Proposed Monitoring Program ... 3 3. Cost of the project & Schedule ................................................................................................... 3 1. Introduction .............................................................................................................................. 4

1.1. About the Company ........................................................................................................... 4 1.2. Environmental Friendly Operations ................................................................................ 7 1.3. Corporate Social Responsibility Programs Implemented .............................................. 11 1.4. Need for Upgrading the Upstream Units of the NP NPK Fertilizer Plant atVisakhapatnam .......................................................................................................................... 13

2. Details of the Existing Facility ................................................................................................... 15 2.1. Existing Consents and Production Aspects ........................................................................ 15 2.2. Details of the Raw Material Receipts and Wharf Facilities ................................................ 17 2.3. Overall Production Operations ......................................................................................... 18

2.3.1. Manufacture of Sulphuric Acid and Phosphoric Acid ................................................. 18 2.3.2. Manufacture of Complex Fertilizers .......................................................................... 21 2.3.3. Phosphoric Acid Plant– Process Description .............................................................. 22 2.3.4. Sulphuric Acid Plant - Process description ................................................................. 23

2.4. Summary of Various Environmental Management Aspects Implemented in the Existing Facility 25

2.4.1. Air emissions control ................................................................................................ 25 2.4.2. Wastewater generation, Treatment and Reuse ......................................................... 25 2.4.3. Gypsum Management .............................................................................................. 26 2.4.4. Solid and Hazardous Waste Management ................................................................. 26 2.4.5. Greenbelt and plantation ......................................................................................... 26

3. Proposed Facilities ................................................................................................................... 27 3.1. Overview.......................................................................................................................... 27 3.2. Proposed Facilities - Process Description .......................................................................... 29

3.2.1. Sulphuric Acid Manufacturing Plants ........................................................................ 29 3.2.2. Proposed Phosphoric Acid Plant ............................................................................... 31 3.2.3. Utilities and Supporting Facilities .............................................................................. 32

3.3. Project Cost and Implementation Schedules..................................................................... 34


Coromandel International Limited, Visakhapatnam, February 2016

List of Tables

Table 1.1 Details of the Existing and Proposed Capacities of the Facility ............................................ 2

Table 2.1 Summary of Various Environmental Clearances Issued for the Existing Facility ................. 15 Table 2.2 Wastewater Generation ................................................................................................... 26 Table 3.1 Details of the Existing and Proposed Capacities of the Facility .......................................... 28 Table 3.2 Site for Proposed enhancement of Phosphoric Acid Plant ................................................. 29 List of Figures Figure 1.1 Location of The Coromandel International Limited- Visakhapatnam plant in Andhra Pradesh ............................................................................................................................................. 5 Figure 1.2 Coromandel International Limited- Visakhapatnam plant and Its Vicinity ......................... 7 Figure 1.3 Various Awards Received by Coromandel International Limited – Visakhapatnam plant .... 9 Figure 1.4 Greenbelt and Plantation Activities at – Visakhapatnam plant ......................................... 11 Figure 2.1 Google Map Showing the Existing Wharf Area and Facilities ............................................ 18 Figure 2.2 Process Flow Diagram ..................................................................................................... 20 Figure 3.1 Typical View of existing Alkali scrubbers in Sulphuric acid plants ..................................... 30 Figure 3.2 Typical SAP Manufacturing Process ................................................................................. 31 Figure 3.3 Typical Process Flow Diagram of Phosphoric Acid ............................................................ 32


Coromandel International Limited, Visakhapatnam, February 2016 Page

Executive Summary

1. Overview of the proposal

Coromandel International Ltd (Coromandel), formerly Coromandel Fertilizers Ltd, was established

in 1961. The company went public in 1964. It is promoted by the Murugappa group. Coromandel

was formed by the joint efforts of two major companies of the US, namely Chevron Chemical Co

and International Minerals and Chemicals Corp. Coromandel is a leading manufacturer of a wide

range of fertilisers and pesticides. The company has phosphatic fertiliser plants at Visakhapatnam

and Kakinada in Andhra Pradesh, and Ennore and Ranipet in Tamil Nadu. The company’s

manufacturing plant at Visakhapatnam presently produces NP, NPK and water soluble fertilizers.

The facility was issued environmental compliance MOEF, vide letter no. F.NO. J-11011/388/2006-

IA-II (I) dated 18 May 2007, no. F.NO. J-11011/314/2007-IA-II(I), dated 31st August 2007 and no.

F.NO. J-11011/548/2008-IA-II (I) dated 10th June 2009.

Coromandel International Limited, Visakhapatnam, the existing facility is able to produce

3000MTPD (average daily production in a year) of various NP / NPK fertilizer products at the

existing facility as against the permitted and consented production capacity of 3900MTPD.

In order to achieve consented production of 3900 MTPD NP/NPK production, the facility

intends to adopt the following modifications and upgrades in the upstream of the complex

fertilize manufacturing units. Since the existing A, B and C granulation plants have adequate

capacity to generate a maximum daily production of 3900 MTPD of complex fertilizers, no

modifications and upgrades are envisaged under this upgrade program.

1. Enhancing Phosphoric acid plant production capacity from 700 MTPD to 1000

MTPD P2O5 including evaporation section and fluorine recovery unit.

2. De-bottlenecking the existing sulphuric acid plant-1 from 1400 MTPD to 1700

MTPD,

3. De-bottlenecking the existing sulphuric acid plant -2 from 300MTPD to 400MTPD,

4. Installing a 40MTPH coal fired boiler to meet the additional steam required for the

increased evaporation capacity.



5. Installing a 5 MW back pressure turbine in order to maximize the efficiency of steam

utilization.

6. Installing of storage facility for a capacity of 20000 MT (P2O5 solution)

forphosphoric acid.

7. Installation of 400 MTPD evaporation system for phosphoric acid including fluorine

recovery system.

Details of the current and future capacities of various plants are presented in Table 1. It can

be inferred from the data presented in the table that the overall production capacity (final

product) in the plant will remain unchanged from the consented production capacity of 3900

TPD.

Table 1.1 Details of the Existing and Proposed Capacities of the Facility

Parameter Units Existing installed/ permitted capacity

Additional Quantity Envisaged under Upgrade Scheme

Total Capacity –Post Project

Scenario Complex fertilizers

Total main plant production TPD 3900 No addition 3900 Sulphuric Acid

SAP 1 TPD 1400 300 1700 SAP 2 TPD 300 100 400 Imports TPD 1200 500 1700 Total SA TPD 2900 900 3800 Phosphoric Acid

PA (as P2O5) TPD 700 300 1000 PA Import (as P2O5) ** TPD 300 -300 0 Total PA (as P2O5) TPD 1000 0 1000 Steam generation capacityof Boilers

LSHS Fired boilers TPH 1x31 +1x48 No addition 79 Waste-heat boilers in SAPs TPH 1x65 +1x15 21 101 Coal Fired boiler TPH NA 40 40 Total steam generation TPH 159 61 220 Power Generation Capacity

Existing DG Sets (stand by) MW 1x4+1x4 No addition 8 Steam Turbo Generator (Condensing + Back pressure)

MW 5 5 10

Total installed power generation

MW 13 5 18



8. Prediction of Environmental Impacts, Management Plant and Proposed Monitoring Program

1) Land Environment-Existing wharf within the lease area will cater to the imports of

the additional sulphuric acid. Depending on the type of grade of the complex fertilizer

manufactured at the site, any additional quantities of the phosphoric acid, if required

will be imported. Necessary supporting facilities such as coal storage and handling,

additional rock phosphate storage godowns will be constructed at the facility.

2) Air Environment- Depending on the availability of type of coal, both indigenous and

imported coal will be used for steam generation in the proposed coal fired boiler.

Typical consumption of the imported coal with 4900 Kcal/Kg will be in the order of

168MTPD. The total estimated SO2 emission rate from the plant after up-gradation of

SAP 1, SAP2 and proposed coal fired boiler will be in the order of 3204 Kg/day as

against the permitted and consented quantity of about 3286 Kg/day. An adequately

designed stack will be constructed as per the CPCB minimum stack height guidelines.

3) Water and Waste water - The water requirement after post enhancement of

phosphoric acid production under up-gradation program will be 2500 m3/day.

Additional requirement will be met from Greater Vishakhapatnam Municipal

Corporation (GVMC)in addition to the existing water allocation of 9000 m3/day.As

this will be utilized in the process, no additional process waste water generation is

envisaged.

4) Solid and Hazardous Waste- Fly ash will be collected in dry form in fly silos and

the same will be disposed to local brick manufactures. Gypsum from the FGD will be

disposed along with the phospho gypsum to the cement industries.

9. Cost of the project & Schedule

The estimated project cost of the proposed upgrades and installations will be in the order of

Rs. 225 Crores.Out of the above mentioned capital cost, about Rs. 11 Crores has been

budgeted towards upgrading the existing scrubbers in SAP # 1 and SAP # 2 units, installation

of dust collection systems, stack gas scrubber and Fluorosilicic acid recovery unit within the

proposed PAP unit, dry lime-stone injection system in the proposed coal fired boiler etc.



The project will be commenced after obtaining necessary approvals from regulatory authorities and

will be completed within 18 months period.

1. Introduction

1.1. About the Company

Coromandel International Ltd (Coromandel), formerly Coromandel Fertilizers Ltd, was

established in 1961. The company went public in 1964. It is promoted by the Murugappa

group. Coromandel was formed by the joint efforts of two major companies of the US,

namely Chevron Chemical Co and International Minerals and Chemicals Corp. Coromandel

is a leading manufacturer of a wide range of fertilisers and pesticides. The company has

phosphatic fertiliser plants at Visakhapatnam and Kakinada in Andhra Pradesh, and Ennore

and Ranipet in Tamil Nadu. It produces phosphatic fertilisers, plant protection chemicals,

speciality nutrients, sulphur bentonite and potash. Some of the major products of the

Coromandel International Limited are complex fertilisers, including di-ammonium phosphate

(DAP), single super phosphate (SSP), speciality fertilizers etc. Its products are sold under the

brand names “Gromor”, “Paramfos”, “Parry Sulphur” and “Parry Gold”. The Coromandel

International limited, Visakhapatnam plant was commissioned in the year 1967 and

subsequently the plant was fully owned by M/s Murugappa group, from the year 1995. The

existing facility has grown several folds and catering to the complex fertilizer needs of the

country. The facility is involved in the manufacture of various NPK and fertilizer grades such

as 28-28-0, 14-35-14, 20-20-0-13, 10-26-26, 18-46-0 and 24-24-0-85 etc. depending on the

market demand and needs.

The company’s manufacturing plant at Visakhapatnam was the first in the country to

manufacture UAP and was commissioned during the year 1967. It presently produces NP,

NPK and water soluble fertilizers. The facility was majorly expanded in the year 2007 from a

production capacity of 2700 MTPD to the current consented capacity of 3900 MTPD. Prior

Environmental Clearance was obtained from the Ministry of Environment and Forest (MoEF)

for the same. The existing facility is falling with the leased area of the Visakhapatnam Port

Trust area. Location of the facility is shown in Figure 1.1 and 1.2. The existing facility

comprises of raw material unloading wharf (captive jetty), material transporting pipelines and



dedicated raw material transporting road from the wharf to plant site. The plant is located at

about 5Km from the wharf area. The main plant consists of two streams of sulphuric acid

manufacturing plant, one stream of phosphoric acid manufacturing plant, three streams of

complex fertilizer manufacturing units, one stream of granulated sulphur manufacturing

plant, one stream of Water Soluble Fertiliser, one stream of Customised Fertiliser Plant,

Power Generation through Steam Turbo Generator and Diesel Generators, Oil fired Boilers,

R&D centre, Solid and Liquid raw material and finished products storage facilities and other

supporting facilities including full-fledged air pollution control systems and wastewater

treatment facilities. The Raw materials for the manufacturing of Phosphatic Fertilisers

includes Rock Phosphate, Sulfur, Urea, Potash, MAP and Ammonia.

Figure 1.1Location of The Coromandel International Limited- Visakhapatnam plant in

Andhra Pradesh





Figure 1.2 Coromandel International Limited- Visakhapatnam plant and Its Vicinity

1.2. Environmental Friendly Operations

The facility has been adopting a robust environmental management programs and have been

achieving the regulatory compliance and beyond in the existing facility. The facility was

issued environmental compliance MOEF, vide letter no. F.NO. J-11011/388/2006-IA-II (I),

dated 18 May 2007, no. F.NO. J-11011/314/2007-IA-II(I), dated 31st August 2007 and no.

F.NO. J-11011/548/2008-IA-II (I), dated 10th June 2009. The consent to operate under Air

(Prevention) and Control of Pollution Act and Water (Prevention) and Control of Pollution

Act are being obtained as per the norms and guidelines of the Andhra Pradesh Pollution

Control Board (APPCB) from time to time. The latest consent to operate issued by APPCB

vide letter no. APPCB.VSP/VSP/65/CFO/HO/2015-454, dated 21 April 2015, is valid up to

31st October 2016. Copy of the environmental clearances and consent to operate are enclosed

as Annexure 1.

The environmental department headed by a qualified and senior executive has been

implementing various environmental compliance, environmental monitoring and

management aspects in the existing facility. Six monthly environmental compliance reports



are regularly submitted to MOEF Regional office. Online monitoring systems on consented

stacks and treated wastewater discharge line have been installed as per the CPCB directions

and state pollution control board guidelines. The facility is meeting the stipulated emissions

and wastewater discharge quality norms. A massive greenbelt/plantation area has been

developed in an area of 127 acres. Typical view of the existing green belt is shown in Figure

1.4.

The facility has won the following awards and certifications from various reputed

organizations and agencies for various environment and energy conservation aspects:

Implemented ISO 14001 and OHSAS 18001 systems in the existing facility.

Implemented 5S Productivity management systems and achieved award for resource

optimization and conservation for achieving highest quality in the plant operations.

Won Energy conservation awards and Water Conservation awards from CII.

British Council 'Five Star' rating for Safety Management Systems

CII EXIM-BANK Business Excellence Award for 'Strong Commitment to Excel' for

Vizag & Kakinada Plants.

FAI Best Production Performance Award for the Phosphoric Acid Plant at Vizag

received 14timesout of 21 occasions.

Won Best Innovation and Breakthrough Award from Skoch and Frost & Sullivan for

Green Belt development in Phospho Gypsum heaps through Bio-remediation Process

which is first of its kind in world.

Best Management Award



Energy efficient unit award received

from CII Green Plantation in Phospho gypsum sediments -Skoch Renaissance Award

Frost & Sullivan – Innovation of year

Award for Green Plantation in Phospho Gypsum

Best Operating Phosphoric acid plant awardfrom FAI

Figure 1.3Various Awards Received by Coromandel International Limited –

Visakhapatnam plant


Coromandel International Limited, Visakhapatnam, February 2016 Page 10



Figure 1.4Greenbelt and Plantation Activities at – Visakhapatnam plant

1.3. Corporate Social Responsibility Programs Implemented

Coromandel's business interest is not limited to commercial profit alone. Its corporate

responsibility does not stop with merely increasing shareholder value. Coromandel associates

with various community development activities in the communities around its manufacturing

facilities as well as in the markets in which it operates. Coromandel played a major role in the

construction of a super speciality wing at St. Ann's Jubilee Memorial Hospital,

Visakhapatnam by donating Rs.60 lakhs. The wing was named after the erstwhile Chairman,

Late Dr. Bharat Ram. The hospital is a charitable institution located in the neighbourhood of

the Visakhapatnam Plant, catering to the medical needs of the underprivileged sections of

society. Equipment such as dialysis unit, ultramodern ventilator, laparoscope and portable X-

ray were also donated. This fully equipped wing caters to around 120 patients a month.

Coromandel donated Rs.10 million towards the Chief Minister's Relief Fund for the

thousands rendered homeless in the devastating floods in Kurnool and Krishna districts of

Andhra Pradesh.

Coromandel donated Rs. 10 million towards Chief Minister’s Relief Fund for the

rehabilitation of victims during HudHud cyclone.

The Rural Girl Child Education scheme was initially introduced in Andhra Pradesh. Enthused

by its success, Coromandel extended the scheme to Karnataka, Tamil Nadu, Orissa and

Maharashtra. Top girl child scorers in class IX are selected from Government and Zilla



Parishad schools to receive an award towards their books, uniforms, feeds and other

educational needs. This helped about 4300 rural girl students back in school.

Coromandel conducts mega medical camps for the economically challenged people from the

neighbouring villages surrounding its Plants. The Company organises medically reputed

specialists from various fields and sets up multi-speciality camps through which more than

1000 people are benefited from each camp.

Coromandel is operating Medical Outreach Centre for the benefit of nearby communities of

50000 population.

St. Ann's Jubilee Memorial Hospital, Visakhapatnam

Coromandel donated Rs.10 million towards the Chief Minister's Relief Fund for the

thousands rendered homeless in the devastating floods in Kurnool and Krishna districts of Andhra Pradesh.



Best Management Award

Mega Medical Camps

1.4. Need for Upgrading the Upstream Units of the NP NPK Fertilizer Plant atVisakhapatnam

As per the current scenario, the facility is able to produce 3000MTPD(average daily

production in a year) of various NP / NPK fertilizer products at the existing facilityas against

the permitted and consented production capacity of 3900MTPD due to the following factors.

Phosphoric acid, a critical raw material for the production of NP / NPK fertilizers is met

through captive production as well as imports from various countries as per the needs of

themarket demand.Due to shortage and irregular supplies of phosphoric acid from



international market and also due to reduced availability of the high grade rock phosphate for

in-house production of phosphoric acid, the facility is not able to address the market demand.

In order to ensure availability of the Phosphoric acid for achieving the full production

capacity of 3900MTPD, enhancement of Phosphoric acid manufacturing facility from 700

MTPD to 1000 MTPD is critical.

Sulfuric acid is the raw material for producing the phosphoric acid. Additional sulphuric acid

is required for the manufacture of the current proposal of enhancement of phosphoric acid

facility. This will be met by de-bottle necking the existing sulphuric acid manufacturing units

of SAP1 andSAP2 to their rated design capacities. The additional sulphuric acid quantities

will be sourced from the local and international markets.

Since the main fertiliser production units (granulation plants A,B and C) have adequate

capacities to produce the consented and permitted production levels of 3900 MTPD.

Coromandel International Limited, Visakhapatnam plant will be able to achieve the desired

production levels by increasing the in-house Phosphoric acid production capacity. This

enhancement enables Coromandel to supply uninterrupted supply of fertiliser to the farming

community in all addressable markets, Andhra Pradesh and Telangana in particular.

It helps in reducing the dependence on the highly fluctuating international supplies. By this a

better control on the overall production schedulesas directed by Ministry of Fertilisers,

Government of India is achieved. This is in line with ‘Make in India’ initiative directed by

Government of India

A detailed discussion on the proposed schemes under the plant upgrade scheme is presented

in Section 3 of this report.



2. Details of the Existing Facility

2.1. Existing Consents and Production Aspects

The Environmental Clearances obtained in three stages and the details of the Environmental

Clearances are as given in Table 2.1. Copies of the environmental clearances issued for the

project are listed in Annexure 1.

Table 2.1Summary of Various Environmental Clearances Issued for the Existing Facility

S.No EC number Details on Environmental Clearance 1 J11011/388/2006-IA II (1) Dated

18.05.2007 For Enhanced production capacity of Phosphoric Acid Plant from 500 TPD to 700 TPD

2 J11011/314/2007-IA II (1) Dated 31.08.2007

For Enhanced production capacity of Complex Fertiliser Plant from 2700 MTPD to 3900 TPD

3 J11011/314/2007-IA II (1) Dated 10.06.2009

For Manufacturing of Customised Fertiliser Plant of Two streams of 300 TPD Each

The Brief status on Compliance of all the above threeEnvironmental Clearances obtained are

given below:

1) Monitoring the Fluorine emissions and meeting the standards of 25 mg/Nm3 from

the stack of phosphoric acid plant and reports are regularly submitted APPCB & RO-

MOEF.

2) The Gaseous Emission monitoring carried out regularly by both in-house Laboratory

and External MOEF Accredited Laboratory.

3) Cooling Tower Blow Down is reused in the process.

4) Ground water monitoring is done through testing the 5 nos of Piezometric wells

provided and reports submitted to APPCB regularly.

5) The Phospho Gypsum produced is disposed to various Cement Industries and also

for agricultural purposes.

6) Roof top rain water Harvesting is done with a capacityto recharge one million litres

per Annum.

7) The CFO obtained from APPCB under Water Act & Air Act has been renewed and

valid upto 31.10.2016

8) The Separate Environmental Management Cell is active in implementation of various

Environmental management programmes.



9) The 2 nos of Alkali Scrubbers are provided for Sulphuric Acid Plant- 1 & Sulphuric

Acid Plant-2 and SO2 emissions of 1 Kg/MT and 0.65 Kg/MT of acid respectively as

stipulated by APPCB is monitored by CEMS and it is connected to APPPCB server.

10) The Multi-stage (Four-stage) scrubbing systems provided for A, B and C Trains and

the emissions of ammonia and fluorine are well within the prescribed limits.

11) Out of 438 Acres of Land Area the green-belt has been developed for 127 acres of

land & well maintained.

12) In Phosphoric Acid Plant, the fluorine recovery is done for converting it to Hydro

Fluoro-silicic Acid.

13) Bag filters are installed in Rock Grinding and reaction station to control dust

emission.

14) As a waste minimisation measure, the sulfur sludge generated is reused in

granulation plant. At all locations acid and effluent recovery pits are constructed for

collection and reuse in process.

15) The de-dusting points are connected to Cyclones for collecting the dust and reuse.

16) Water meters and Energy meters are provided for all plants.

17) Installed pipe conveyors to transfer raw material & product in order to avoid

spillages. Significant energy savings achieved after installation of pipe conveyors.

18) Waste Steam based Air pre-heaters are in operation in place of fuel fired furnaces for

generation of hot gases for drying the product in Granulation plants. (First of its

kind in world)

19) A state of art Effluent Treatment plant based on two stage lime neutralisation is in

operation.

20) HDPE lined pond for storage of Phospho Gypsum is in place.

21) Greening of existing phospho gypsum heaps is done by Bio-remediation process

using mycroizza technology (First of its kind in world)

The manufacturing facility has Consent to Operate& Hazardous waste authorization from

APPCB, which is validupto 31.10.2016 under Water & Air Act and Hazardous Wastes (M,H

& TBM)Rules respectively. Copy of the consent for operation is enclosed as Annexure 2.

The manufacturing facility is complying with all the conditions stipulated by APPCB

including Emission discharge standards of SO2 below 1 Kg/MT and 0.65 Kg/MT of sulphuric



acid manufactured in SAP1 and SAP2 respectively. Phosphoric acid residues (Tank Bottom

sludge) are recycled back into Phosphoric Acid Reactor. The sulphur sludge produced in

sulfuric acid plant is recycled back into the process as a filler material in the granulation

plant. The manufacturing facility files Cess Returns in Form-1 as required under Section 5 of

Water Cess Act every month.

2.2. Details of the Raw Material Receipts and Wharf Facilities

The existing facility has the following raw material handling units: Raw material importing facility exclusively for Coromandel (wharf/jetty area) is located at

Visakhapatnam Port about 5Km away from the main plant and is connected by a dedicated

road of Coromandel. Rock phosphate, molten sulphur, solid sulphur, potash, MAP, urea and

ammonia are being unloaded at the existing wharf area.

Ammonia is currently imported at the existing fertilizer berth at wharf and directly

transferred to the plant through dedicated pipe line and stored in atmospheric Ammonia

storage tanks located in plant premises. The rock phosphate, which is the raw material for

phosphoric acid production is imported and stored initially in silos at wharf. Closed pipe

conveyors are also used for raw material transfer in order to minimize the dust emissions.

These solid raw materials are later transferred to plant by covered trucks through dedicated

road of Coromandel. Similarly Potash, Urea and Sulphur (solid sulphur and molten sulphur)

are also imported and transported through trucks.

The total requirement of phosphoric acid is about 1000 MTPD for 3900 MTPD of NP/NPK

product manufacturing, of which about 700 MTPD is manufactured internally and the

balance requirement of 300 MTPD is met through imports. Similarly, the total requirement of

sulphuric acid is about 2900 MTPD, of which about 1700 MTPD is manufactured internally

and the balance 1200 MTPD is met through imports. The phosphoric acid and sulphuric acid

are stored in dedicated storage tanks within the facility. Coromandel is having 7 Nos. of

phosphoric acid storage tanks (7 x 610 m3) and 4 Nos. of sulphuric acid storage tanks (total

11000 MT) within the facility.

Molten sulphur storages tanks of 15000 MT (2 X 7500 MT) capacity are present at fertilizer

berth facility and maintained with help of LSHS fired steam generating boilers. Molten



sulphur is transferred to the plant through insulated trucks. Solid sulphur received from

jetty/wharf is stored in closed godowns having a capacity of 24000 MT. Rock phosphate

received from the jetty/wharf is stored in closed go-downs having a total capacity of 80,000

MT. Ammonia is stored in a atmospheric storage tanks of capacity 12500 MT located in the

plant premises. Urea received from jetty/wharf is stored in a closed godown having a capacity

of 30000 MT. Potash received from jetty/wharf is stored in a closed godown of 10000 MT.

Figure 2.1Google Map Showing the Existing Wharf Area and Facilities

2.3. Overall Production Operations

2.3.1. Manufacture of Sulphuric Acid and Phosphoric Acid

The primary raw materials required for the manufacture of complex fertilizers are Phosphoric

acid, sulphuric acid, ammonia, urea and potash. Sulphuric acid is also used in the

manufacturing of phosphoric acid. The rock phosphate received at the site is subjected to

grinding. Ground rock phosphate is reacted with sulphuric acid to form phosphoric acid and

gypsum slurry. This slurry is filtered to separate dilute phosphoric acid (26% P2O5) and

gypsum in a vacuum operated filter, which is further concentrated in evaporators to

concentrate to 47%P2O5 concentration.During the concentration of phosphoric acid, fluorine

vapours generated are recovered in the form of 18% Hydro fluoro silicic acid. The existing



phosphoric acid is designed to produce 700 TPD as P2O5 of acid. Closed circuit cooling tower

is being used for cooling purpose in the evaporators system in the Phosphoric acid plant. The

sulphuric acid required for the main product and also for producing the Phosphoric acid is

met by both captive production as well as imports / sourced locally.

Two number of sulphuric acid manufacturing plants (1400TPD+300TPD) are in operation at

the facility. Sulphur is heated to the required temperature and fired in the combustion

chamber. The heat generated in the process is used for producing steam in respective waste

heat boilers which is consumed for process heating and balance steam for power generation.

Double Conversion Double Absorption technology (DCDA) has been adopted for the

manufacture of the sulphur acid. Five stage convertor is in place in both the sulphuric acid

plants. Dedicated alkali scrubbers are installed after the final absorption tower in each of the

sulphuric acid plant. Closed circuit fresh water based on cooling towers is being adopted in

the sulphuric acid.

Sea water is used for once through cooling in sulfuric acid, phosphoric acid manufacturing

and in steam turbo generator.



Sulphuric acid Plant – I 1400 MTPD

Sulphuric acid Plant – II 300 MTPD

Sulphur Sulphur Water Air Water Air

Sulphuric Acid

Phosphoric acid Plant 700 MTPD

Water

Rock Phosphate By Product Gypsum

Evaporation & Fluorine Recovery

Granulation Plant 3900 MTPD (3 streams)

By Product Hydrofluorosilicic Acid

NP / NPK fertiliser

weak P2O5 Acid

strong P2O5 Acid

Products

Steam

Steam

Steam

Ammonia

Urea

Potash

Bought out Sulf Acid

Auxillary Boiler 48 MTPH 31 MTPH

LSHS

Diesel Generators

2 nos x 4 MW

LSHS

Turbo Generator 1 nos X 5 MW

Figure 2.2Process Flow Diagram

Bought out Phos Acid



2.3.2. Manufacture of Complex Fertilizers

Existing facility consists of three streams of Granulation plants A, B and C. Plants A&B are

based on TVA Pre-Neutralization Technology supplied by M/s Wellman Lord, U.S.A, while

Plant C is based on Pipe Reactor Technology supplied by Incro, Spain.

The plants A, B and Care equipped with the following:

Multi Stage scrubbing system for dust, ammonia and fluorine removal.

Plant C is provided with high efficiency Pipe reactor.

Steam based hot air generation system for drying purpose.

Distributed Control System for Process Control.

Raw Materials required for the manufacture of complex fertilizers are, Liquid Ammonia,

Urea, Potash, sulphur, phosphoric acid at 26% concentration, phosphoric acid at 47%

concentration and sulphuric acid at 98.5 % concentration. The conventional process for

manufacturing complex Phosphatic (NP/NPK) Fertilizer involves the reaction between

ammonia, phosphoric and sulfuric Acid. The slurry thus formed containing upto 80-85% of

solids is then pumped into a Rotary Drum Granulator wherein it coats the recycled fertilizer

solid (of fine size) and Urea / Potash granules to form larger granules of complex fertiliser

prior to drying and separation of appropriately sized product granules. As a technological

improvement, Pipe Reactor is introduced to improve efficiency, quality & throughput. Pipe

Reactor is positioned such that the spray from the outlet of the reactor falls directly on to the

bed of recycled fertilizer in the Granulator. The feed of raw materials is carefully controlled

using high accuracy flow meters to ensure the desired grade of fertilizers manufactured. The

Pipe Reactor allows a higher temperature operation of the reacting slurry & also eliminates

the problems of pumping the slurry into the Granulator. These allow better Granules & a

lower ratio of recycled fertilizer material to fresh feed material. Thus, for a given capacity of

the recycled fertilizer handling system the pipe reactor enables a higher throughput of

product.

The discharge from the Granulator is dried in a Rotary Dryer using hot air as a drying

medium, screened in industrial sieves to separate the oversize particles from the product size

Granules and under size fines material. The oversize is crushed in oversize Pulverizes and is

compounded with the under size fines to form the recycled fertilizer which is fed back to the

Pre-Feasibility Report for proposed enhancement of Phosphoric Acid Production from 700 MTPD to 1000 MTPD P2O5 and other auxiliaryfacilities within the Existing Fertilizer Complex, Sriharipuram, Vishakhapatnam district, Andhra Pradesh.


Granulator. The product size granules are taken to the bulk storage and consequently to the

bagging plant as and when required for bagging operations prior to despatch from factory.

2.3.3. Phosphoric Acid Plant– Process Description

The process technology adopted for the manufacturing of Phosphoric Acid is the

conventional Di-hydrate process. The imported rock phosphate is stored in a closed godown,

within the factory, is transported to the Grinding area. The Ball Mill with open loop grinding

arrangement is envisaged to crush the rock phosphate to the appropriate size and will be

stored in an intermediate silo. Ground Rock is then conveyed to Phosphoric acid plant using

state of art Pipe Conveyor system.This rock phosphate is then carefully weighed on automatic

electronic weigh feeders and fed to the Reaction Vessel. Sulphuric acid is diluted, cooled and

mixed with the rock phosphate. The formed slurry is intensely agitated using specially

designed agitators in a circular Reaction Tank. This slurry is well agitated in the outer

compartment to facilitate the completion of reaction between rock phosphate and sulfuric

Acid before entering an inner vessel placed within the circular tank. This vessel is designed

to allow de-super saturation and then slurry enters Filter Feed Tank. The entire slurry is

pumped into Horizontal Belt Filter (HBF). Cooling Air is impinged on the reaction mass for

cooling. The filtration is carried out on HBF to ensure the separation of the liquid phosphoric

acid from the solid calcium sulphate (otherwise known as phosphogypsum). The

phosphogypsum is washed repeatedly using fresh water to ensure complete recovery of

phosphoric acid. The washings of the filter cake are recycled to the main reaction tank. The

product phosphoric acid is transferred to storage and the washed filter cake is transported to

the gypsum handling yard. The gases containing the fluorides are recovered using the suction

fans from the various vessels of the plant and scrubbed with fresh water to ensure recovery of

fluorides containing compounds from the gases. The fluoride free gas is then vented through

a high stack.

Ca3(PO4)2 + 3H2SO4 + 2H2O 2H3PO4 + 3CaSO4.2H2O

Fluorine and silica containing gases liberated during Evaporation are led into fluorine

recovery unit, where the gases are absorbed in circulating water to produce

Hydrofluorosilicic acid, which is sold as a by-product.The phosphoric acid plant is designed

by M/s Dorr Oliver of U.S.A. The plant is provided with:

a) Multi stage Fumes Scrubber supplied by M/s MDEEL to scrub and recover the

Fluorine



b) Pipe Conveyor System for dust transfer – with technology of M/s CKIT –

South Africa.

c) Fluorine Recovery Unit – with technology of M/s Nissan, Japan.

d) Distributed control system for the process control by M/s Yokogawa

e) Dry disposal of gypsum by M/s HDO

f) Effluent Treatment Plant – Treated effluent reused in the process by M/s HDO

2.3.4. Sulphuric Acid Plant - Process description

The process Technology used here is that of the Double Conversion Double Absorption

(DCDA) system with features incorporated for maximum energy recovery. Imported Sulfur is

in two states is being used(solid and molten form). The Solid sulfur granules are melted by

the use of steam, using coils placed in the melter pit and then is pumped through the sulfur

filter into a holding pit, while liquid sulfur is directly fed into the holding tank. The cleaned

sulfur is then pumped into the sulfur burner where in the presence of oxygen from the dry air

it is converted into Sulfur-di-Oxide. The air before being fed to sulfur burner is dried in

Drying tower using sulfuric acid as the medium for absorbing moisture from the air. The

heat generated in the reaction between sulfur& Oxygen is recovered as steam using the Waste

heat boiler. The cooled gas is then catalytically converted using vanadium pent-oxide to

sulfur tri-oxide. This reaction being exothermic raises the reacting gas temperature, the

resulting heat is then effectively recovered by superheating the steam, generated by the waste

heat boiler. After cooling, the gas is then further converted for the second time to produce

more sulfur tri-oxide. The resulting heat is then recovered in the Hot heat exchanger before

being sent to the converter for the 3rd time for more conversion to sulfur tri-oxide. The 3rd

pass obtains the conversion efficiency of up to 95% and the heat of reaction of the 3rd pass is

recovered in the Cold heat exchanger & economizer. The cooled gas containing substantial

quantities of sulfur tri-oxide is then sent to the intermediate absorption tower wherein it reacts

with water present in 98.5% circulating sulfuric acid to form 98.9% sulfuric acid. Water is

mixed with 98.9% sulfuric acid to make 98.5% sulfuric acid in circulation tank. The gas free

of sulfur tri-oxide is passed through the Mist Eliminator to ensure that droplets of sulfuric

acid are removed from the gas stream. This gas is then heated in the Cold and the Hot heat

exchangers to a temperature of 400 deg C before being sent into the 4th pass of the converter

wherein the small quantities of sulfur di-oxide is converted to the tri-oxide form. The heat of

reaction obtained here is also recovered in the economizer by heating the boiler feed water



being sent to the waste heat boiler. The cooled gas containing the sulfur tri -oxide is then

absorbed in the final absorption tower using sulfuric acid to form the additional quantities of

sulfuric acid. The spent gasses are passed through alkali scrubber before being vented to the

atmosphere through a stack.

The steam produced in waste heat boiler is super heated in the super heater placed

downstream of the first pass of the converter is then used to

1) Generate power in captive Turbo Generator Power plant (5 MW).

2) Run Sulphuric acid plant Main Air Blower.

3) Hot air generator for drying in granulation plant.

4) The Exhaust steam from Main Air Blower is then used as

a) Heating medium in the Evaporation Section of Phosphoric Acid Plant.

b) Heat medium in Granulation Section of Complex Fertiliser Granulation Plant

c) A part of the steam is also used for heating the sulfur in the melters and de-

aerating the fresh boiler feed water.

The product acid from circulation tank is pumped through the Drying Tower cooler before transfer to the sulfuric acid storage tanks.

Reactions:

S + O2 SO2

V2O5 SO2 + ½ O2 SO3 SO3 + H2 SO4 + H2O 2H2SO4

At Coromandel, Visakhapatnam there are 2 streams of Sulfuric acid plants, SAP-I and SAP-II

of 1400 TPD and 300 TPD respectively. The SAP-I and SAP-II plants are having converter

consisting of 5 catalyst beds.



2.4. Summary of Various Environmental Management Aspects Implemented in the Existing Facility

2.4.1. Air emissions control

Screw un-loader is provided in wharf area to unload raw material of Sulphur, Rock Phosphate

etc., to avoid spillages. The imported molten sulphur facility is established to minimise solid

Sulphur consumption. The Sulphuric Acid manufacturing Plants has adopted DCDA process

for better conversion. Alkali scrubbers are installed in sulfuric acid plant I and II for

minimising emissions. Coromandel has stopped fuel consumption in the complex fertiliser

plants by installing steam based air pre-heaters. The required power is being generated by

steam TG (Turbo Generator), where the steam generated from the sulphuric acid plant is

used. Coromandel has installed on-line stack analysers (CEMS) in Sulphuric acid plants for

continuous monitoring of SO2. Coromandel has provided telescopic chute in the storage

godowns to avoid fugitive emissions. The dust collection system provided to control dust

from the screens, crushers and conveyors. Continuous Ambient Air Quality Monitoring

stations are installed at 3 locations within the factory premises.

Fluorine Recovery Process:The vapour evolved during evaporation of phosphoric acid is

containing fluorine which is converted to Hydro-fluro silicic acid using absorbers. The

fluorine is recovered as H2SiF6 and sold as a valuable by-product and thereby minimizing

pollution load.

Four number of bag filters are installed to control the dust generated from handling of rock

phosphate. Closed type pipe conveyors are used for the transfer of rock phosphate thereby

preventing dust emissions.

The Disaster Management Plan has been prepared and kept in place.

2.4.2. Wastewater generation, Treatment and Reuse

Coromandel is having full-fledged ETP comprising two stage neutralisation and

clariflocculator etc., to treat effluent generated from acid plants. Effluent generated from

Fertiliser Plant is being recycled. Cooling tower blow-down is reused in the process. The

treated effluent is discharged into sea at a distance of more than 6 KM through channel.

There are 5 nos. of Piezo metric wells located to monitor ground water quality.



Table 2.2Wastewater Generation

S.No Source Permitted Discharge Quantity as per CFO – m3/day

Point of Disposal as per the consent

1 Process and Washings 7890 Outfall into sea through a dedicated canal.

2 Cooling Tower Blow-down 60000 Outfall into sea through a

dedicated canal. 3 Domestic Sewage 520 Septic Tank followed by Soak

Pit arrangement

2.4.3. Gypsum Management

Coromandel has adopted dry disposal system replacing the wet disposal of Gypsum and

provided lining to an extent of 10 acres of existing Gypsum pond. Coromandel has provided

HDPE & Geo membrane liner under the wagon loading area where gypsum is stored and

transported to cement industries. About 18 acres of old gypsum storage area has been

reclaimed with plantation with the help of TERI.

2.4.4. Solid and Hazardous Waste Management

Coromandel generates other solid wastes like spent catalysts, used oils and acid residues etc.,

which are being disposed as per the Hazardous Waste Authorisation. Sludge generated from

Effluent Treatment Plant is recycled into process.

2.4.5. Greenbelt and plantation

Out of 436 acres of the total extent of the land, 127 acres are developed as Green Belt.



3. Proposed Facilities

3.1. Overview

In order to achieve consented production of 3900 MTPD NP/NPK production, the facility

intends to adopt the following modifications and upgrades in the upstream of the complex

fertilize manufacturing units. Since the existing A, B and C granulation plants have adequate

capacity to generate a maximum daily production of 3900 MTPD of complex fertilizers, no

modifications and upgrades are envisaged under this upgrade program.

1. De-bottlenecking the existing sulphuric acid plant 1 from 1400 MTPD to 1700

MTPD,

2. De-bottlenecking the existing sulphuric acid plant2 from 300MTPD to 400MTPD,

3. Enhancing Phosphoric acid plant production capacity from 700 MTPD to 1000

MTPD P2O5 including evaporation section and fluorine recovery unit.

4. Installing a 40MTPH coal fired boiler to meet the additional steam required for the

increased evaporation capacity.

5. Installing a 5 MW back pressure turbine in order to maximize the efficiency of steam

utilization.

6. Installing of storage facility for a capacity of 20000 MT (P2O5 solution) for

phosphoric acid.

7. Installation of 400 MTPD evaporation system for phosphoric acid including fluorine

recovery system.

It has been estimated that for generating 1000 MTPD of phosphoric acid and also utilization

in the main products during the post project scenario, about 3800 TPD of sulphuric acid will

be required. By upgrading the existing sulphuric acid plants about 2100 TPD of sulphuric

acid can be generated. Hence the balance additional 1700 TPD of sulphuric acid will be

sourced from the imports post project. Depending on the type of grade of the complex

fertilizer manufactured at the site, any additional quantities of the phosphoric acid, if required

will be imported. Necessary supporting facilities such as coal storage and handling, additional

rock phosphate storage godowns will be constructed at the facility.

Details of the current and future capacities of various plants are presented in Table 3.1. It can

be inferred from the data presented in the table that the overall production capacity of final

product in the plant will remain unchanged from the consented production capacity.



Table 3.1Details of the Existing and Proposed Capacities of the Facility

Parameter Units

Existing installed/ permitted capacity

Additional Quantity Envisaged under Upgrade Scheme

Total Capacity –Post Project

Scenario

Complex fertilizers Total main plant production TPD 3900 No addition 3900

Sulphuric Acid SAP 1 TPD 1400 300 1700

SAP 2 TPD 300 100 400 Imports TPD 1200 500 1700 Total SA TPD 2900 900 3800 Phosphoric Acid

PA (as P2O5) TPD 700 300 1000 PA Import (as P2O5) ** TPD 300 -300 0 Total PA (as P2O5) TPD 1000 0 1000 Steam generation capacityof Boilers

LSHS Fired boilers TPH 1x31 +1x48 No addition 79 Waste-heat boilers in SAPs TPH 1x65 +1x15 21 101 Coal Fired boiler TPH NA 40 40 Total steam generation TPH 159 61 220 Power Generation Capacity

Existing DG Sets (stand by) MW 1x4+1x4 No addition 8 Steam Turbo Generator (Condensing + Back pressure)

MW 5 5 10

Total installed power generation

MW 13 5 18

** The quantity of PA import will depend on the Grade of fertiliser production.

Location of the proposed facilities to be installed within the existing facility is shown in

Figure 3.1. Layout showing teh prosed facilities is enclosed as Annexure 3.



Figure 3.1: Location of Proposed facilities

Table 3.2Site for Proposed enhancement of Phosphoric Acid Plant

3.2. Proposed Facilities - Process Description

3.2.1. Sulphuric Acid Manufacturing Plants

The existing sulphuric acid plants are designed based on the contact process with double

conversion and double absorption system (DCDA). Sulphur after melting is filtered and

stored in pits. Sulphur is fired in furnace to produce sulphur dioxide and it is further

converted into SO3 in five stage convertor. SO3 is absorbed in circulated acid in absorption

SAP#1

SAP#2



towers and thus acid produced is cooled and stored in storage tanks. The waste-heat

generated from combustion process is utilized for generation of steam. In addition to this,

intermediate economizers are also in place to recover the heat by preheating the boiler feed

water required for steam generation. Based on the preliminary study, it has been observed

that the existing five stage convertors in both the plants are adequate to produce enhanced

capacities. Hence it has been proposed to install the following additional units in each of the

SAP unit to enhance the production from 1400 TPD to 1700 TPD in SAP1 and 300 TPD to

400 TPD in SAP2 respectively.

Description SAP#1 SAP#2 Air blower up-gradation Yes Yes Waste heat boiler system up-gradation Yes Yes Up-gradation of absorption towers Yes Yes Up-gradation of heat recovery system Yes Yes Upgradation of alkali scrubber Yes Yes Typical requirements of raw materials and utilities of the proposed enhancement of 400

MTPD sulphuric acid are as follows:

Total sulphur feed : 135 MTPD

Sea water cooling requirement : 10000 m3/day

Fresh water requirement : 600 m3/day

Power requirement : 1 MW

SAP # 1 SAP # 2

Figure 3.1Typical View of existing Alkali scrubbers in Sulphuric acid plants



Figure 3.2Typical SAP Manufacturing Process

3.2.2. Proposed Phosphoric Acid Plant

Similar to the existing Phosphoric Acid plant (PAP), proposed enhancement of phosphoric

acid plant capacity will also be designed and operated based on Di-Hydrate process.

Additional rock phosphate also will be imported along with the current requirement at our

wharf from the prevailing sources and will be transported to the plant. The existing rock

phosphate storage facilities will be enhanced accordingly. The rock phosphate will be ground

in a dedicated grinding mill at the site and the ground rock phosphate will be stored in

dedicated storage bins intended for the proposed enhanced capacity. Additional gypsum

produced from the facility will be disposed to cement industries. The proposed enhancement

of Phosphoric acid plant consist of the following units: (1). Reaction section, (2) filtration

section (3) Phosphoric acid concentration section, (4). Fluorine recovery unit, (5). Phosphoric

acid storage tank and (6). Phosphoric acid scrubbing systems.

Typical requirements of raw materials and utilities of the proposed enhancement of 300

MTPD Phosphoric acid are as follows:

Total phosphate rock feed : 1000 MTPD

Sulphuric acid required : 900MTPD

Steam requirement for evaporation and filtration: 40MTPH



Sea water cooling requirement : 15000 m3/day

Additional phospho gypsum produced : 1650 MTPD

Fresh water requirement : 2000 m3/day

Power requirement : 5 MW

Figure 3.3Typical Process Flow Diagram of Phosphoric Acid

3.2.3. Utilities and Supporting Facilities

3.2.3.1. Steam Demand and Proposed Coal Fired Boiler

The total steam demand in the existing facility is about 80 TPH and the same will be in the

order of 133 TPH during the post project scenario. About 101 TPH of steam will be

generated from the waste-heat boilers and the balance steam can be sourced from a new coal

fired boiler of capacity 40 TPH. The existing two number of LSHS boilers will be kept as

stand-by mode for operation during the emergency needs. The proposed coal fired boiler will

be a circulating fluidized bed combustion boiler (CFBC) with necessary provision of dry lime

injection arrangement to capture sulphur dioxide generated during the combustion process

(Flue Gas De-sulphuriser - FGD). Depending on the availability of type of coal, both

indigenous and imported coal will be used for steam generation in the proposed coal fired

boiler. Typical ash and sulphur content in the imported coal will be in the order of 12% (max)

and 0.7% (max) respectively. Typical consumption of the imported coal with 4900 Kcal/Kg



will be in the order of 168MTPD. Covered coal storage shed will be provided to

accommodate 15 days coal requirement of the boiler. SO2 emission from the proposed coal

fired boiler will be in the order of 581 Kg/day. The total estimated SO2 emission rate from the

plant after upgradation of SAP 1, SAP2 and proposed coal fired boiler will be in the order of

3204 Kg/day as against the permitted and consented quantity of about 3286 Kg/day. An

adequately designed stack will be constructed as per the CPCB minimum stack height

guidelines. Fly ash will be collected in dry form in fly ash silos and the same will be disposed

to local brick manufactures. Gypsum from the FGD will be disposed along with the phospho

gypsum to the cement industries.

3.2.3.2. Electrical Energy Demand

The average electrical energy demand in the existing facility is in the order of 14 MW. The

facility has contracted grid power of 12MW, Hydel power of 1MW and in-house steam

turbine capacity of 5MW. The net available power for the existing operation is in the order of

18MW. The additional electrical power demand during the post project scenario will be

5MW with a total gross demand of 19MW. In order to meet the additional power demand in

the plant, it has been proposed to apply for additional grid contact demand of 5MW and a

new steam turbine (back pressure turbine) of capacity 5MW has been considered under the

proposed upgrade scheme. The additional steam generated from the SAP1 & SAP2 and the

proposed coal fired boiler will be passed through a back pressure steam turbine to generate

about 5MW and the low pressure steam will be used for evaporator section in the enhanced

capacity of Phosphoric acid plant.

3.2.3.3. Water Demand and Wastewater Generation

The raw water requirement after post enhancement of phosphoric acid production under

upgradation program will be 2600 m3/day. Additional requirement will be met from Greater

Vishakhapatnam Municipal Corporation (GVMC)in addition to the existing water allocation

of 9000 m3/day. As this will be utilized in the process, no additional process waste water

discharge is envisaged.

Once through sea water cooling system is place since the inception of the plant in 1967. The

facility is consented to draw about 63,000 m3/day through a dedicated canal at the facility.

The additional 25,000 m3/day of sea water required for cooling during the post project

scenario also will be sourced from the existing sea water canal. No additional infrastructure

Annexure 1

Existing Environmental Clearance and its amendment

Annexure 2 Consent to Operate of the Existing Facilities

Annexure 3 Layout showing the Proposed Facilities

Documents

Pre-Feasibility Report - environmentclearance.nic.inenvironmentclearance.nic.in/writereaddata/Online/TOR/0_0_13_Feb... · Pre-Feasibility Report for proposed enhancement of Phosphoric