Transcript MWRP Biosolids Public Meeting

Irvine Ranch Water District
Michelson Water Recycling Plant
Phase 2 Expansion
SCAP Water Quality Committee Meeting
Randy Lee, P.E. , Assistant Director of Recycling Operations
September 23, 2014
Presentation Overview
1. IRWD Background
2. MWRP Existing Processes Overview
3. MWRP Phase II Expansion
4. Biosolids Project Status Update
1
IRWD Serves 20% of Orange County
2
About the Irvine Ranch Water District
Water, Wastewater, Water Recycling, and Urban Runoff
California Special District governed by a publicly-elected Board
IRWD customer base:
• Residential population:
• Daytime population:
• Service connections:
330,000
>500,000
102,380
IRWD service area:
• 181 square miles (20% of Orange County)
• All or part of six cities and unincorporated county:
Irvine
Tustin
Orange
Lake Forest
Newport Beach
Costa Mesa
3
IRWD Services
Drinking Water
Sewage Collection
Recycled Water
Urban Runoff Treatment
4
Phase 2 Expansion Project
5
Michelson Water Recycling Plant
• Produces 18 MGD
of Title 22
recycled water.
• Phase 2 Expansion
increases capacity
to 28 MGD.
• Scheduled completion
June 2014.
6
MWRP Aerial View
Michelson Water Recycling Plant
Treatment Process Prior to Expansion
FLOW
EQUALIZATION
BASINS
NORTH IRVINE
INTERCEPTOR
PRIMARY
SEDIMENTATION
TANKS
INFLUENT
GRINDERS
SOUTH IRVINE
INTERCEPTOR
SECONDARY
ACTIVATED SEDIMENTATION
TANKS
SLUDGE BASINS
DUAL
MEDIA
FILTERS
CHLORINE
CONTACT TANKS
RECYCLED
WATER
CUSTOMERS
OCSD
8
Phase 2 Overall Process Train
FLOW
EQUALIZATION
BASINS
DUAL
MEDIA
FILTERS
SECONDARY
ACTIVATED SEDIMENTATION
SLUDGE BASINS
TANKS
NORTH IRVINE
INTERCEPTOR
SOUTH IRVINE
INTERCEPTOR
RW
CUST.
HIGH RATE
CLARIFIER
PRIMARY
SEDIMENTATION
TANKS
HEADWORKS
CHLORINE
CONTACT TANKS
PRIMARY
EFFLUENT
PUMP
STATION
MEMBRANE BIOREACTOR
UV DISINFECTION
OCSD
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Phase 2 Expansion Overview
NEW TREATMENT FACILITIES
MODIFIED EXISTING
TREATMENT FACILITIES
NEW CHEMICAL FACILITIES
FLOW
EQUALIZATION
BASINS
NEW ELECTRICAL FACILITIES
EXISTING
BLOWER
ROOM
HIGH RATE
CLARIFIER
MEMBRANE
BIOREACTOR
UV
DISINFECTION
PEPS
EXISTING
PSTs
NEW
PSTs
HEADWORKS
`
EFFLUENT
PUMPS
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New Headworks
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New Primary Sedimentation Tanks
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New Primary Effluent Pump Station
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Membrane Bioreactor
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MBR Process Flow
30 MGD
5 MGD
10 MGD
5 MGD
10 MGD
30 MGD
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MBR Fine Screens & Aeration Basins
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MBR Mixed Liquor Pump Station
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Loading MBR Membrane Cassettes
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MBR Air & Permeate Piping
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Permeate Pump & Blower Rooms
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MBR Photos
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Ultraviolet Disinfection Facility
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New Phase 2 Buildings
Headworks
High Rate Clarifier
Membrane Bioreactor
Electrical Bldg.
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MWRP Phase 2 Overview
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Floodwall – 200 Yr Flood Protection
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Phase 2 Construction Cost
Treatment Process
$83 Million
Floodwall
$ 5 Million
Overall Construction Cost:
$88 Million
Change Orders:
$ 4 Million 4.5%
Total
$92 Million
Construction Management
$14 Million 15%
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Biosolids & Energy Recovery
Facilities Project
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Biosolids & Energy Recovery Project
Project Objectives
• Beneficially reuse Biosolids and Biogas produced
during the treatment process.
• Manage residuals (Biosolids) at reduced costs to
IRWD’s customers.
• Construct project to meet IRWD’s
future Biosolids handling needs.
• Minimize environmental impacts:
Drying and pelletizing reduces
export truck loads by factor of four.
• Reduces greenhouse gas effects
by beneficially using pellets locally
as a fertilizer or e-fuel.
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Biosolids & Energy Recovery Project
Project Description
• IRWD to construct facilities at MWRP for:
• Biosolids digestion, dewatering and drying
• Biogas management and energy recovery
• Odor control systems
• IRWD would no longer export solids to Orange County
Sanitation District (OCSD).
• Project would also accept Biosolids trucked in from IRWD’s
Los Alisos Water Recycling Plant (LAWRP).
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Biosolids Facilities Site Location
MWRP
Biosolids and Energy
Recovery Facilities
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Simplified Process Schematic
DIGESTER GAS
CLEANING
MICROTURBINES
BIOGAS
ELECTRICITY
FATS, OILS &
GREASE
EXISTING
PRIMARY
CLARIFIER
DEWATERING
CENTRIFUGE
THICKENING
CENTRIFUGE
ROTARY
DRUM
DRYER
PELLET
STORAGE &
LOADOUT
PS
EXISTING
SECONDARY
CLARIFIER
THICKENING
CENTRIFUGE
ACID-METHANE PHASE
ANAEROBIC
DIGESTION
DIGESTED SLUDGE
STORAGE
CAKE
STORAGE &
LOADOUT
CLASS A PELLET
HAUL
WAS
RECYCLED
WATER
CLASS B
CAKE HAUL
(BACKUP)
TO LIQUID
TREATMENT
CENTRATE
TREATMENT
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Air Permit Process Diagram
32
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Heat Drying System
Preseparator
Baghouse
Venturi Scrubber
Gas Recirculation
Pellet
Cooler
Triple Pass Drying Drum
Furnace
Pneumatic Transporter
Furnace
Condenser
ID Fan
To Storage Silos
Cake from dewatering
Atmosphere
Cake Bin
Mixer
Recycle
Bin
RTO
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Heat Drying System
• Produces a pellet
suitable for local
beneficial reuse
• Nitrogen for fertilizer
• Btu content for e-fuel
• Dryers in CA:
• Encina (Carlsbad)
• Sacramento
• Corona
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3-D Model Renderings
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Digestion Facilities
Egg-Shaped Digesters
Sludge Holding Tanks
Digester Control Bldg.
Acid Phase Digesters
FOG Foodwaste Receiving.
36
36
Biosolids Handling Building
Dryer and Odor Control
Discharge Stacks
Polymer Storage
Solids Receiving
Pellet Loadout
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Biosolids Handling Building
Dryer Area
Centrifuge Area
Polymer Storage
Centrate Treatment
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Biogas Treatment & Microturbines
Biogas Storage
Biogas Conditioning
Microturbines
39
Centrifuge Room
Thickening Centrifuges
Dewatering Centrifuges
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Dryer System – Lower Level
Pellet Screen
Dryer Drum
41
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Dryer System – Upper Level
Solids/Off Gas
Separation
Recycle Bin
Pellet Mixer
Dryer Drum
42
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Sub-Surface View of 3,028 Piles
43
Construction Photos
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Construction Photos
Pile Installation – Digester Area
•
Completed:
Construction of
structure and
45
Construction Photos
Pile Installation – Basement of Solids Handling Building
46
May 2014 Quarterly Report
Installation of Piles in Methane Digester Area
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May 2014 Quarterly Report
Installation of Piles in Solids Handling Facility
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Project Schedule
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Project Schedule
DATE
ACTIVITY
April 29, 2013
Notice of Award
June 3, 2013
Notice to Proceed
Sept. 2013 – March 2014
Pile Driving
January 17, 2016
Anaerobic Digestion Facilities Online
March 2, 2016
Produce Class B Biosolids (Cake)
June 30, 2016
Microturbine Power Generation Online
August 29, 2016
Produce Class A Biosolids (Pellets)
October 28, 2016
Project Completion
50
Biosolids Construction Cost
Pile Driving
$ 10 Million 6%
Digesters
$ 45
28%
Dryer
$ 13
8%
Biogas & Microturbines
$
8
5%
Sitework
$ 14
9%
Other
$ 73
45%
Total Bid Amount
$ 163 Million
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Contact Information:
Randy Lee, P.E.
Irvine Ranch Water District
[email protected]
949-453-5780