Irvine Ranch Water District SCAP Energy Committee Meeting IRWD - - PowerPoint PPT Presentation

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Irvine Ranch Water District SCAP Energy Committee Meeting IRWD - - PowerPoint PPT Presentation

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Irvine Ranch Water District SCAP Energy Committee Meeting IRWD Biosolids Project Update August 26, 2015 1 Presentation Agenda Introduction to IRWD IRWDs Biosolids Project Construction Update 2 Introduction to IRWD Irvine Ranch

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Irvine Ranch Water District SCAP Energy Committee Meeting IRWD Biosolids Project Update

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August 26, 2015

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Presentation Agenda

  • Introduction to IRWD
  • IRWD’s Biosolids Project
  • Construction Update

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Introduction to IRWD

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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

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IRWD Service Area

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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

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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

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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

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Biosolids Dewatering & Energy Recovery Project

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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.

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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:

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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

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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)

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Top View of Project Site at Completion

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Solids Handling Bldg. Digester Complex FOG Station Power Generation Centrate Treatment Polymer Storage Odor Control Chemical Storage

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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

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Section Through Digester & Control Building

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Biogas & Power Generation

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Biogas Storage Biogas Conditioning Microturbines RTO Emergency Gen Set

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IRWD Biosolids Project Update

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: Notice of Award: April 29, 2013 Time Elapsed thru July 2015: 64.4% Contractual Completion Date: October 28, 2016

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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

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IRWD Biosolids Project Update

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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

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Concrete Work – Southeast Corner of Solids Handling Building

IRWD Biosolids Project Update

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Installation of Carbon Steel Digester Gas Holder

IRWD Biosolids Project Update

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Bulk Polymer Storage Tanks

IRWD Biosolids Project Update

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IRWD Biosolids Project Update

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Preparation for Coating of Liquid Chemical Storage

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Concrete Slab of Stormwater Pump Station

IRWD Biosolids Project Update

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IRWD Biosolids Project Update

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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

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Installation of Carbon Steel Plates – Methane Digesters

IRWD Biosolids Project Update

Methane Digester No. 1 Methane Digester No. 2

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IRWD Biosolids Project Update

Installation of Carbon Steel Plates – Methane Digesters

Methane Digester No. 2 Methane Digester

  • No. 3
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IRWD Biosolids Project Update

Installation of Carbon Steel Plates – Methane Digesters

Methane Digester

  • No. 2

Methane Digester

  • No. 3

Methane Digester

  • No. 1
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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
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Construction of Acid Phase Digester No. 3

IRWD Biosolids Project Update

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Stairwell Above Dewatering Feed Pump Station

IRWD Biosolids Project Update

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August 2015 Quarterly Report

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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
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IRWD Contact Information:

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Randy Lee

Assistant Director of Recycling Operations (949) 453-5780 leer@irwd.com