Irvine Ranch Water District SCAP Energy Committee Meeting IRWD Biosolids Project Update. August 26, 2015

Transcription

1 Irvine Ranch Water District SCAP Energy Committee Meeting IRWD Biosolids Project Update August 26,

2 Presentation Agenda Introduction to IRWD IRWD s Biosolids Project Construction Update 2

3 Introduction to IRWD

4 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

5 IRWD Service Area 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 5

6 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

7 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 ) One acre-foot = 325,851 gallons = 1,233 m 3 7

8 Biosolids Dewatering & Energy Recovery Project 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. 8

9 IRWD Biosolids and Energy Recovery Project Project Objectives: 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. 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 10

11 Biosolids Process Schematic PRIMARY CLARIFIER THICKENING CENTRIFUGE PS FATS, OILS & GREASE BIOGAS DIGESTER GAS CLEANING DEWATERING CENTRIFUGE MICROTURBINES ELECTRICITY ROTARY DRUM DRYER (1 MW) PELLET STORAGE & LOADOUT SECONDARY CLARIFIER THICKENING CENTRIFUGE WAS ACID-METHANE PHASE ANAEROBIC DIGESTION DIGESTED SLUDGE STORAGE CAKE STORAGE & LOADOUT CLASS A PELLET HAUL RECYCLED WATER TO LIQUID TREATMENT CENTRATE TREATMENT CLASS B CAKE HAUL (BACKUP) 11

12 Chemical Storage Odor Control Polymer Storage Top View of Project Site at Completion FOG Station Digester Complex Solids Handling Bldg. Power Generation Centrate Treatment 12

13 Digestion Facilities Digested Sludge Holding Tanks Step 2: Methane phase Egg-Shaped Digesters Step 1: Acid Phase Digesters Digester Equipment & Control Bldg. Fats, Oils & Grease Delivery Area 13

14 Section Through Digester & Control Building 14

15 Biogas & Power Generation Biogas Storage RTO Biogas Conditioning Emergency Gen Set Microturbines 15

16 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: 0 Notice of Award: April 29, 2013 Time Elapsed thru July 2015: 64.4% Contractual Completion Date: October 28,

17 IRWD Biosolids Project Update Construction Schedule MILESTONE ORIGINAL REVISED per June 2015 UPDATE June 3, 2013 ACTIVITY 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 17

18 IRWD Biosolids Project Update Aerial View of Western Half of Biosolids Site Solids Handling Area Bulk Polymer Storage Centrate Treatment Electrical Room Polymer Room Microturbine Area Stormwater Pump Station Polymer Room Dryer Area Digester Gas Holder Sludge Wet Wells Sludge Receiving Basement Liquid Chemica l Storage 18

19 IRWD Biosolids Project Update Concrete Work Southeast Corner of Solids Handling Building 19

20 IRWD Biosolids Project Update Installation of Carbon Steel Digester Gas Holder 20

21 IRWD Biosolids Project Update Bulk Polymer Storage Tanks 21

22 IRWD Biosolids Project Update Preparation for Coating of Liquid Chemical Storage 22

23 IRWD Biosolids Project Update Concrete Slab of Stormwater Pump Station 23

24 IRWD Biosolids Project Update Aerial View of Eastern Half of Biosolids Site Digestion Area Digester Gas Holder Methane Digester No. 2 Methane Digester No. 1 Liquid Chemical Storage Methane Digester No. 3 Digester Control Building Sludge Holding Tank No. 1 Dewatering Feed Pump Station Sludge Holding Tank No. 2 Acid Digester Area Fats, Oils, and Grease Station 24

25 IRWD Biosolids Project Update Installation of Carbon Steel Plates Methane Digesters Methane Digester No. 2 Methane Digester No. 1 25

26 IRWD Biosolids Project Update Installation of Carbon Steel Plates Methane Digesters Methane Digester No. 2 Methane Digester No. 3 26

27 IRWD Biosolids Project Update Installation of Carbon Steel Plates Methane Digesters Methane Digester No. 3 Methane Digester No. 2 Methane Digester No. 1 27

28 IRWD Biosolids Project Update Rebar Installation for First Floor of Digester Control Building Methane Digester No. 1 Acid Phase Digester No. 1 Methane Digester No. 3 28

29 IRWD Biosolids Project Update Construction of Acid Phase Digester No. 3 29

30 IRWD Biosolids Project Update Stairwell Above Dewatering Feed Pump Station 30

31 August 2015 Quarterly Report 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 31

32 IRWD Contact Information: Randy Lee Assistant Director of Recycling Operations (949)