Brahm Shakti Hospital

ADEQUACY REPORT ON THE EFFLUENT

TREATMENT PLANT

FOR

M/s Brahm Shakti Hospital

&

Research Centre

U1/78, Budh Vihar

Delhi -110086

DEPARTMENT OF CIVIL ENGINEERING

JAMIA MILLIA ISLAMIA

NEW DELHI

July 2010

00

Adequacy report for M/s Brahm Shakti Hospital & Reseach Centre, U1/78, Budh Vihar, Delhi -10086

TABLE OF CONTENTS

Subject Page No.

1.0 Introduction 1

2.0 Unit Activity 2

3.0 Effluent Generation and Characterisation 2

4.0 Effluent Treatment System 4

5.0 Effluent Treatment Plant Process Units 5

6.0 Summary of Treatment Plant Process Equipments and 12

Their Adequacy

7.0 Characteristics of Treated Effluent 13

8.0 Photographs of ETP 14

9.0 Performa for Issuing Adequacy Certificate towards Polluting Units: 17

10.0 Certificate of Adequacy for Effluent Treatment Plant 19

ANNEXURES

1. Test Report ANNEXURE-I

2. Drawing of ETP ANNEXURE-II

3. Data/Information and Undertaking from ANNEXURE-III

M/s Brahm Shakti Hospital & Reseach Centre

U1/78, Budh Vihar, Delhi -10086

,

00


1.0 INTRODUCTION

M/s Brahm Shakti Hospital & Reseach Centre, U1/78, Budh Vihar, Delhi -10086 is 100 bedded

hospital. It has OPD, different wards, operation theatres, kitchen, and canteens. All of these

units of the hospital generate different types of wastewater. The wastewater from different

sources is collected in a single sump. Bio medical hazardous waste is managed separately.

The effluent of this unit originates mainly during washing, cleaning and personal hygiene. The

total consumption of water is around 40000 lit/day and it works through out the clock.

The hospital has set up an Effluent Treatment Plant designed and installed specifically for the

purpose. After receiving a request from them, a team of experts from the Department of Civil

engineering, Jamia Millia Islamia (Central University) visited the unit on ------ and on --------

to inspect the ETP operation including the effluent generation and treatment system and to

study the activity of the unit. A few suggestions were made and its implementation was

monitored. The adequacy report is based on the plant inspection along with the detailed

discussion we had with the plant personnel on the working methodology for the treatment and

the results of analysis report of ETP as conducted by DPCC. The unit employs nearly 170

persons to various jobs.

Client provided us information regarding effluent generation and other hospital details The

ETP is already installed and commissioned. Treated effluent has been tested from DPCC. The

copy of analysis reports is enclosed.

11


2.0 UNIT ACTIVITY

M/s Brahm Shakti Hospital & Reseach Centre, U1/78, Budh Vihar, Delhi -10086., is a 100

beds hospital and 150 outdoor patients come per day. They have canteens, laboratory and

operation theatres.

Water Requirement

The water requirement estimated for the Hospital Complex is shown in table below;

The total estimated water consumption is 40000 litres/day

S.No Description of waste water Quantity in litres/Day

1 Operation theatre & Patients wards, Kitchen, etc 31050

2 OPD Patient (150x20) 3000

3 Employees (170x35) 5950

Total 40000

3.0 EFFLUENT GENERATION AND CHARACTERISATION

Sources of Pollution

Hospital requires special care for sanitation and hygiene and thus huge quantity of wastewater

is generated from these head. Laboratory and operation theatres also generate wastewater that

needs treatment before disposal. The domestic nature of waste is generated from different

hospital wards, canteen and kitchen

22


3.1 Quantification of the Effluent

The basis of estimating Effluent generation is as below:

Wastewater Generation Estimation

S.No Description of waste water Quantity in litres/Day

1 Operation theatre & Patients wards, Kitchen, etc 24840

2 OPD Patient 2400

3 Employees 4760

3 Total 32000

Total wastewater discharge 3 litres/day

3.2 Characterisation of the Effluent

Generated effluent from this type of industry is composed mainly of washing products such as

sodium carbonate, tripolyphosphate, biodegradable detergents etc. a typical values of effluent

is presented below. The following are the results as presented by the client.

S. No. Parameters Values

1. Appearance Turbid

2. pH 7-8

3. Suspended Solid 200-400

4. Chemical Oxygen Demand 400-600

5. Bio-chemical Oxygen Demand 150-300

6. Oil & Grease 5-10

* All concentration values are in mg/1 excepting that of pH

33


4.0 EFFLUENT TREATMENT SYSTEM

System Description:

The equalised effluent is feed to aeration tank to enable maximum BOD removal. The aeration

system, which works on the activated sludge on suspended growth with aeration principle,

enables more than 90% removal of BOD while resulting in very little sludge production. In the

aeration tank soluble and colloidal organic matter is destroyed with the help of diffused

aerators. The aerator system is seeded with activated sludge taken from similar plant. The

mixed liquor from secondary clarifier is drained / re circulated. The clarified water is collected

in a tank where sodium hypochlorite / any other recommended oxidant is dosed for removal of

residual organics and disinfection. The treated water is taken for disposal / recycles.

For further reduction of COD, BOD & Suspended Solids the treated water from Chlorination

Tank will flow through Multi grade Filter.

Process Concept:

The concept of treatment includes removal of solids, organic matter and handling of sludge for

disposal. The heart of the waste treatment system is the aerobic biological reactor, which is

designed on the basis of activated sludge on suspended growth type with aeration where the

biomass will grow. This treatment basically involves the stabilization of the organic matter by

the action of various micro organisms.

The biological flocs (MLSS) come in contact with the incoming effluent in the aerators with its

highly aerobic environment and oxidize the organic matter. The desirable environmental

conditions like sufficient dissolved oxygen and nutrients are required for cell growth and

energy for various metabolic functions. It is essential that the biomass readily separate from the

treated waste water in the secondary Clarifier.

The optimal pH for biological aeration is 6.0 – 9.0. The inadequacy of nutrients in the

wastewater can be compensated by the addition of Diammonium phosphate and urea.

44


Process Description:

From the sewage holding tank (equalisation tank) the sewage will be pumped through a pump

placed inside / outside the sewage tank to the Aeration Tank. The aeration unit is of activated

sludge suspended growth type where the biomass will grow.

The sewage from the aeration tank will flow to the secondary clarifier and after clarification

will enter in the chlorination tank where it will be chlorinated for disinfection.

The treated water from chlorination tank will flow through Activated carbon Filter for the

further reduction of BOD and Suspended Solids.

The flow diagram of the effluent treatment plant is shown is figure 1.

5.0 EFFLUENT TREATMENT PLANT PROCESS UNITS

Various process units of the effluent treatment plant and its detail specifications are given

below:

1 Screen

2 Anaerobic Baffled Reactor

3 Anaerobic Filter

4 Aeration Tank

5 Blower

6 Sedimentation Tank (Clarifier)

7 Disinfection Tank (Reaction Tank)

8 Sludge Drying Tank.

9 Activated Carbon Filter

55


5.1 Detail Specifications

Screen

S. No. Description Details

1. Number of unit 1

2. Number of Compartment

3. Removal Mechanism / cleaning Manual

4. Material of Construction RCC

Anaerobic Baffled Reactor


1. Number of units 1

2. Number of Compartment 1

3. Size of Compartment 2 x 3 x 2..2 m

4. Placement Below Ground Level

5. Total volume 13200lit

6. Design discharge 40000 lit/day

7. Detention time 0.378 hrs

8. Purpose Anaerobic Treatment of Sewage



66


Anaerobic Filter




3. Size of Compartment 1 x 3 x 2..2 m


5. Total volume 6600lit

6. Design discharge 40000 lit/day

7. Detention time 0.75 hrs

8. Purpose To increase the contact time


10. Material of Construction Brick Masonary

Aeration tank

S. No Description Details


2. Number of compartment 1

3. Size of Aeration Tank 1 x 3 x 2..2 m

4. No. of Diffuser 30 No. of 60 mm dia x 600 mm long.

5. Total Volume 6600lit

6. Design Discharge 40000 lit/day

7. Hydraulic Retention Time 0.75 hrs

8. Purpose Proper aeration for removal of dissolved BOD by Activated Sludge process.

9. Aeration Mechanism Diffuser Aeration

10. Materials of Construction R.C.C

77


Clarifier: (Sedimentation Tank)S. No. Description Details



3. Size of Compartment 0.65x 3 x 2.2 m

4. Material of Construction Rick Masonry

5. Maximum discharge 10 cum/hr

6. Average discharge 5 cum/hr

7. Surface Area 1.95 m2

8. Surface loading 7.69 m³/m²/hrs (at peak discharge)

9. Purpose Settlement of Bio-flocs and small suspended particles

10. Total Volume 4290lit

11. Design Discharge 40000 lit/day

12. Settling Time 2.07 Hours (avg. discharge)1.03 Hours (peak. discharge)

13 Removal Mechanism Pump

Disinfection Tank (Reaction Tank)


1 Number of units 1

2 Number of compartment 1

3 Size of compartment 0.5 x 0.5 x 1 m

4 Placement Ground

5 Total Volume 250 lit

6 Design discharge 40000 litres/day

7 Detention Time 3 min

8 Chemical dosing Sodium Hypochlorite / Chloride Compound

9 Material of Construction Brick Masonry

10 Removal mechanism/cleaning Manual

88


Sludge Drying Beds




3. Size of Compartment 1 x 1 x 1 m


5. Total volume 1000 lit /bed

Design discharge 40000 lit/day

6. Sludge generation 3600 lit /day

7 Purpose Storage of Sludge for dewatering through

Sludge drying bed


Activated Carbon Filter


1 Number of units 1

2 Number of compartment 1

3 Size of compartment 0.35 x 0.8 m (ht.)

4 Placement Above ground

5 Total Volume 800 lit.

6 Surface area 0.096 m2

7 Design discharge 40000 lit/d

8 Filtration rate ----- m3/m2/hr < 10 m3/m2/hr

9 Purpose Removal of flocs/ and fine settle-able particles

10 Material of Construction PVC

99


Air compressor (Blower)

S. No. DescriptionDetails

1 Number of units 1

2 RPM --

3 Capacity of Motor 1HP (35 CFM)

4 Placement On top of equalization tank Ground Floor,

Gallery

5 Purpose Transfer of Effluent to various unit and for

back washing of pressure filter

6 Material of Construction CI make

5.2 Provision/Possibility of By-Passing the Sewage

All possibilities of by-passing have been checked and found no possibility of the same. An

undertaking, not to by-pass effluent is taken from the owner and is enclosed. Plant operator has

been advised to maintain high level of house keeping. Party has also been advised not to resort

to any bypassing even at a later stage.

5.3 Disposal of Sludge

The dry sludge collected from sludge drying bed (manually) stored as per norms of hazard

Waste Management Rules.

1010


6.0 SUMMARY FO TREATMENT PROCESS UNITS AND THEIR

ADEQUACY

The treatment process units are summarized and presented in table 2. The table indicates that

most of the process units are adequate for the operation of the Sewage treatment plant for the

unit as described earlier.

S. No. Process/Equipment Modifications Suggested

Capacity(K. litres)

Detention Time/other

remarks

Current Status

1 Screen Chamber No -- - Adequate

2. Anaerobic Baffled Reactor

No 13200 0.378 hrs (22.68 min)

Adequate

3 Anaerobic Filter No 6600 0.75 hours Adequate

4 Aeration Tank No 6600 0.75 hours Adequate

5 Clarifier (Sedimentation Tank)

No Max. Discharge 10 m3/hrAvg. Discharge 5 m3/hrSOR 7.69 m3/m2/d< 40 m3/m2/d

2.07 hrs Adequate

6 Disinfection Tank(Reaction Tank)

No 250 3 min Adequate

7 Sludge Drying Bed No 1000 3600 lit/day Adequate

8 Activated carbon Filter No 0.096 m2 ----- m3/m2/d< 10 m3/m2/d

9 Air Blower No 1HP 35 CFM Adequate

1111


7.0 CHARACTERISTICS OF TREATED EFFLUENT

DPCC lab officers collected Grab sample of treated wastewater on 08/06/2010 from outlet of

ETP. The details of results are as under (copy of report No DPCC/Comm/w/13176/481, dated:

09/6/10 is also enclosed).

SL. NO. PARAMETERS Outlet of STP

1 pH 7.6

2 Total suspended solid 44

3 Oil & Grease 4

4 BOD 3, 27 23

5 Bio-assay test 90%

Note: Unit of all parameters are in mg/l except pH and Bio-assay test (%)

1212


8.0 PHOTOGRAPHS OF STP

1313


1414


9.0 PERFORMA FOR ISSUING ADEQUACY CERTIFICATE

TOWARDS POLLUTING UNITS


1 NAME OF UNIT M/s Brahm Shakti Hospita & Research Centre

2 ADDRESS OF UNIT U1/78, Budh Vihar, Delhi-110086

3 ACTIVITY/PROCESS Hospital

4 PRODUCTION CAPACITY 100 Beds

5 MANUFACTURING PROCESS (IN BRIEF)

Multi discipline hospital. OPD, Different wards, Operation theatres, Hostel for nurses, Housing for residence doctors, Kitchen, Canteen

6 i) Source of water Jal Board / Ground Water

ii) Quantity of Water 40000 litres/day

iii) Quantity of Effluent Discharge 32000 litres/ day

iv) Place of Sewage Discharge Sewer line/Reuse

v) Source of Trade Sewage Wastewater is generated during cleaning, washing and for maintenance of hygiene

vi) Whether Sewage Treatment required (except for domestic Sewage)

Yes

vii) If STP is required, whether unit is having STP

Yes, Unit has already installed STP.

viii) Details of STP Screen


Anaerobic Filter

Aeration Tank

Blower

Sedimentation Tank (Clarifier)

Disinfection Tank

(Reaction Tank)

Sludge Drying Tank.


ix) Whether Volume of Sewage is measured/ estimated.

Estimated,

x) Whether manufacturing Process/ Yes

1515


Characteristics of raw materials have been studied thoroughly

xi) Whether Sewage characteristics have been checked

Yes

xii) Whether design aspects have been considered while evaluating the performance of STP

Yes

xiv) Whether any modifications were Suggested to upgrade the existing STP

Yes

xv) If any modification were suggested Yes

1 Naming of Individual Units2 Partition in Sludge Drying Bed

xvi) Whether modification suggested have been carried out by the unit

Yes

xvii) Whether existing STP will be able to give Sewage as per notified Parameters

Yes

1616


10.0 CERTIFICATE OF ADEQUACY FOR EFFLUENT TREATMENT

PLANT

The ETP consisting of following units

Screen


Anaerobic Filter

Aeration Tank

Blower

Sedimentation Tank (Clarifier)

Disinfection Tank (Reaction Tank)

Sludge Drying Tank.


is installed M/s Brahm Shakti Hospital & Research Institute, U1/78, Budh Vihar, Delhi-

86, and is adequate to treat the Effluent at 40000 litres /day being generated by Flocked Fabric

Manufacturing Unit provided ETP operate as per operating guidelines, to achieve specified

standards as given below:

pH = 5.5 to 9.0

Oil & Grease = < 10 mg/I

BOD = < 30 mg/I

TSS = < 100 mg/I

The standard notified for the Small Scale Industries located in Union Territories

The adequacy is applicable with the following conditions:

1. The plant shall be run properly, as per operating guidelines/Operating procedures.

2. Any change in process or estimated load plant & machinery, raw material, process

must be informed to DPCC and a new adequacy certificate should be sought.

1717

Adequacy report for M/s Brahm Shakti Hospital & Reseach Centre, U1/78, Budh Vihar, Delhi -

10086

ANNEXURE-I

EFFLUENT TEST REPORT


10086

ANNEXURE-II

DRAWING OF ETP


FORMATE FOR STP MOINITORING LOG-BOOK:

Date Operator

Name

Volume of one

batch

Pump Operation

Time (for each

batch)

Chemical

Consumption

(mg/day)

Sludge

Volume

Collected

Final pH Remarks

START STOP



10086

ANNEXURE-III

DATA/INFORMATION AND UNDERTAKING

FROM Sitaram Bhartia

Institute of Science & Research

Documents

Brahm Shakti Hospital