Irvine Ranch Water Districtscap1.org/POTW Reference Library/August 26, 2015... · Irvine Ranch Water District A California Special District Serving Central Orange County ... 6 Cities

Irvine Ranch Water District

SCAP Energy Committee Meeting

IRWD Biosolids Project Update

1

August 26, 2015

Presentation Agenda

• Introduction to IRWD

• IRWD’s Biosolids Project

• Construction Update

2

Introduction to IRWD

Irvine Ranch Water District

A California Special District Serving Central Orange County

Reliable High-Quality Water & Sewer Service

Efficient. Cost Effective. Environmentally Sensitive

High Level of Customer Satisfaction 4

IRWD Service Area

5

6 Cities

Irvine

Lake Forest

Tustin

Newport Beach

Orange

Costa Mesa

Unincorporated Orange County

20% of Orange County Percent of the county covered by IRWD

181 square miles

Size of District

IRWD Services

Drinking Water 4 Water Treatment Plants; 27 wells;

36 reservoirs; 1,500 miles of water

pipeline

Sewage Collection 1,000 miles of collection pipeline

Recycled Water

2 recycled water plants

500 miles of recycled water pipeline

Urban Runoff Treatment

San Joaquin Marsh &

23 built and 45 planned wetland

treatment sites

6

IRWD Customer Base

500,000

District’s Daytime Population

340,000 Residential Customers

105,688

Service connections

93,037 Acre Feet of Water Served

(FY 2012-2013)

One acre-foot = 325,851 gallons = 1,233 m3

7

Biosolids Dewatering & Energy Recovery Project

8

Cost-effective: IRWD customers save up to

$288 million.

Green and sustainable: biogas used to

fuel facility.

Biosolids are processed into pellets and

beneficially used for fertilizer or fuel.

Provide facilities to meet future solids

handling needs.

IRWD Biosolids and Energy Recovery Project

• IRWD to construct facilities at MWRP for:

Centralized biosolids processing

Biogas management & energy recovery

Odor control system

• IRWD reduce solids treatment costs.

• Maximize renewable resources and minimize environmental impacts from residuals.

Project Objectives:

9

10

Major Biosolids Project Components

• Biosolids thickening, digestion, & dewatering

• Drying to produce pellets for local beneficial reuse

• Biogas conditioning

• Microturbines for energy production - Use at MWWP

• Three-stage odor control system plus RTO for dryer

• Recycle Food Waste/FOG to generate biogas and generate energy

11

Biosolids Process Schematic

PRIMARY CLARIFIER

SECONDARY CLARIFIER ACID-METHANE

PHASE ANAEROBIC DIGESTION

DEWATERING CENTRIFUGE

DIGESTED SLUDGE

STORAGE

MICROTURBINES

BIOGAS

ELECTRICITY

CAKE STORAGE &

LOADOUT

CLASS B CAKE HAUL (BACKUP)

ROTARY DRUM DRYER

PELLET STORAGE & LOADOUT

CLASS A PELLET HAUL

FATS, OILS & GREASE

CENTRATE TREATMENT

TO LIQUID TREATMENT

RECYCLED WATER

PS

WAS

THICKENING CENTRIFUGE

THICKENING CENTRIFUGE

DIGESTER GAS CLEANING

(1 MW)

Top View of Project Site at Completion

12

Solids Handling Bldg.

Digester Complex

FOG Station

Power Generation

Centrate Treatment

Po

lym

er

Sto

rage

Od

or

Co

ntr

ol

Ch

em

ical

St

ora

ge

Digestion Facilities Step 2: Methane phase Egg-Shaped Digesters

Digested Sludge Holding Tanks

Step 1: Acid Phase Digesters

Digester Equipment & Control Bldg.

Fats, Oils & Grease Delivery Area

13

Section Through Digester & Control

Building

14

Biogas & Power Generation

15

Biogas Storage

Biogas Conditioning

Microturbines

RTO Emergency Gen Set

16


Key Information / Dates Contractor: Filanc/Balfour-Beatty

Contract Amount: $163,465,940

Change Orders to Date (Thru CCO 31) $ 3,400,148 (2.08%)

Revised Contract Amount to Date: $166,866,088

Contractual Calendar Days: 1,278

Additional Days thru Change Orders: 0

Notice of Award: April 29, 2013

Time Elapsed thru July 2015: 64.4%

Contractual Completion Date: October 28, 2016

17

IRWD Biosolids Project Update Construction Schedule

MILESTONE ORIGINAL REVISED per

June 2015 UPDATE

ACTIVITY

June 3, 2013 Notice to Proceed

1 July 6, 2015 May 6, 2016 WAS & Primary Sludge Processing

2 August 20, 2015 June 29, 2016 Sludge Thickening Facilities

3 September 19, 2015 June 7, 2016 FOG Receiving

4 January 17, 2016 August 18, 2016 Anaerobic Digestion Facilities Online

5 March 2, 2016 September 6, 2016 Produce Class B Biosolids (Cake)

6 June 30, 2016 September 6, 2016 Microturbine Power Generation Online

7 August 29, 2016 December 8, 2016 Produce Class A Biosolids (Pellets)

Final October 28, 2016 January 22, 2017 Project Completion


18

Aerial View of Western Half of Biosolids Site – Solids Handling Area

Centrate

Treatment

Sludge

Wet Wells

Liquid

Chemica

l Storage

Bulk

Polymer

Storage

Microturbine Area

Sludge

Receiving

Basement

Dryer

Area

Polymer

Room

Stormwater

Pump Station

Polymer

Room

Electrical

Room

Digester

Gas

Holder

19

Concrete Work – Southeast Corner of Solids Handling Building


20

Installation of Carbon Steel Digester Gas Holder


21

Bulk Polymer Storage Tanks



22

Preparation for Coating of Liquid Chemical Storage

23

Concrete Slab of Stormwater Pump Station



24

Aerial View of Eastern Half of Biosolids Site – Digestion Area

Fats, Oils,

and

Grease

Station

Acid

Digester

Area

Digester

Control

Building

Dewatering Feed

Pump Station

Methane

Digester

No. 1

Methane

Digester

No. 2

Methane

Digester

No. 3

Liquid

Chemical

Storage

Sludge Holding

Tank No. 2

Sludge Holding

Tank No. 1

Digester

Gas

Holder

25

Installation of Carbon Steel Plates – Methane Digesters


Methane Digester No. 1


26

IRWD Biosolids Project Update Installation of Carbon Steel Plates – Methane Digesters


Methane

Digester No. 3

27

IRWD Biosolids Project Update Installation of Carbon Steel Plates – Methane Digesters

Methane

Digester No. 2

Methane

Digester No. 3

Methane

Digester No. 1

28

IRWD Biosolids Project Update Rebar Installation for First Floor of Digester Control Building

Methane

Digester No. 3

Methane

Digester No. 1

Acid Phase

Digester No. 1

29

Construction of Acid Phase Digester No. 3


30

Stairwell Above Dewatering Feed Pump Station


August 2015 Quarterly Report

31

Planned Activities – August to October 2015

• Continue construction of Solids

Handling Facility and Centrate

Treatment Facility

• Start construction of the

Microturbine Area

• Continue construction of

Methane Digesters, Solids

Holding Tanks and Acid

Digesters and Chemical Area

• Install SCE and Gas Services

IRWD Contact Information:

32

Randy Lee Assistant Director of Recycling Operations

(949) 453-5780

[email protected]

Documents

Irvine Ranch Water Districtscap1.org/POTW Reference Library/August 26, 2015... · Irvine Ranch Water District A California Special District Serving Central Orange County ... 6 Cities