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Irvine Ranch Water District Michelson Water Recycling Plant Phase 2 Expansion

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. IRWD Background MWRP Existing Processes Overview

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Irvine Ranch Water District Michelson Water Recycling Plant Phase 2 Expansion

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  1. Irvine Ranch Water DistrictMichelson Water Recycling PlantPhase 2 Expansion SCAP Water Quality Committee Meeting Randy Lee, P.E. , Assistant Director of Recycling Operations September 23, 2014

  2. Presentation Overview • IRWD Background • MWRP Existing Processes Overview • MWRP Phase II Expansion • Biosolids Project Status Update

  3. IRWD Serves 20% of Orange County

  4. 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: 330,000 • Daytime population: >500,000 • Service connections: 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

  5. IRWD Services

  6. Phase 2 Expansion Project ASCE OC Water Treatment Project of the Year - 2013

  7. Michelson Water Recycling Plant • Produces 18 MGD of Title 22 recycled water. • Phase 2 Expansionincreases capacity to 28 MGD. • Scheduled completion June 2014.

  8. MWRP Aerial View

  9. Michelson Water Recycling Plant Treatment Process Prior to Expansion FLOW EQUALIZATION BASINS DUAL MEDIA FILTERS PRIMARY SEDIMENTATION TANKS SECONDARY SEDIMENTATION TANKS CHLORINE CONTACT TANKS ACTIVATED SLUDGE BASINS NORTH IRVINE INTERCEPTOR INFLUENT GRINDERS RECYCLED WATER CUSTOMERS SOUTH IRVINE INTERCEPTOR OCSD

  10. Phase 2 Overall Process Train FLOW EQUALIZATION BASINS DUAL MEDIA FILTERS SECONDARY SEDIMENTATION TANKS CHLORINE CONTACT TANKS ACTIVATED SLUDGE BASINS RW CUST. HIGH RATE CLARIFIER PRIMARY SEDIMENTATION TANKS NORTH IRVINE INTERCEPTOR HEADWORKS PRIMARY EFFLUENT PUMP STATION SOUTH IRVINE INTERCEPTOR MEMBRANE BIOREACTOR UV DISINFECTION OCSD

  11. Phase 2 Expansion Overview NEW TREATMENT FACILITIES MODIFIED EXISTING TREATMENT FACILITIES FLOW EQUALIZATION BASINS NEW CHEMICAL FACILITIES NEW ELECTRICAL FACILITIES EXISTING BLOWER ROOM HIGH RATE CLARIFIER MEMBRANE BIOREACTOR UV DISINFECTION PEPS SPENT BACKWASH TANK SPENT BACKWASH TANK EXISTING PSTs NEW PSTs HEADWORKS CHLORINE CONTACT TANK ` EFFLUENT PUMPS

  12. New Headworks

  13. New Primary Sedimentation Tanks

  14. New Primary Effluent Pump Station

  15. Membrane Bioreactor ANOXIC ZONE DE-OX ZONE BLOWER ROOM AERATION BASIN PERMEATE PUMP ROOM FINE SCREENS ML P.S. MEMBRANE TANKS RAS BOX RAS CHANNEL AERATION BASIN ANOXIC ZONE DE-OX ZONE DIP TANK B.P. TANK

  16. MBR Process Flow 30 MGD 5 MGD 10 MGD 5 MGD 10 MGD 30 MGD

  17. MBR Fine Screens & Aeration Basins

  18. MBR Mixed Liquor Pump Station

  19. Loading MBR Membrane Cassettes

  20. MBR Air & Permeate Piping

  21. Permeate Pump & Blower Rooms

  22. MBR Photos

  23. Ultraviolet Disinfection Facility

  24. New Phase 2 Buildings Membrane Bioreactor Headworks High Rate Clarifier Electrical Bldg.

  25. MWRP Phase 2 Overview

  26. Floodwall – 200 Yr Flood Protection

  27. 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%

  28. Biosolids & Energy Recovery Facilities Project

  29. Biosolids & Energy Recovery Project • 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. • Project Objectives

  30. Biosolids & Energy Recovery Project • 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). • Project Description

  31. Biosolids Facilities Site Location MWRP Biosolids and Energy Recovery Facilities

  32. Simplified Process Schematic DIGESTER GAS CLEANING MICROTURBINES BIOGAS ELECTRICITY EXISTING PRIMARY CLARIFIER FATS, OILS & GREASE DEWATERING CENTRIFUGE PELLET STORAGE & LOADOUT THICKENINGCENTRIFUGE ROTARYDRUMDRYER PS EXISTING SECONDARY CLARIFIER DIGESTED SLUDGE STORAGE ACID-METHANE PHASE ANAEROBICDIGESTION THICKENINGCENTRIFUGE CLASS A PELLET HAUL CAKE STORAGE & LOADOUT WAS TO LIQUID TREATMENT RECYCLED WATER CENTRATETREATMENT CLASS BCAKE HAUL (BACKUP)

  33. Air Permit Process Diagram

  34. Heat Drying System Furnace Venturi Scrubber GasRecirculation Pellet Cooler Triple Pass Drying Drum Furnace Pneumatic Transporter Condenser ID Fan To Storage Silos Cake from dewatering Atmosphere Cake Bin Recycle Bin RTO Mixer Baghouse Preseparator

  35. 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

  36. 3-D Model Renderings

  37. Digestion Facilities Egg-Shaped Digesters Sludge Holding Tanks Digester Control Bldg. Acid Phase Digesters FOG Foodwaste Receiving. 36

  38. Biosolids Handling Building Dryer and Odor Control Discharge Stacks Polymer Storage Solids Receiving Pellet Loadout

  39. Biosolids Handling Building Dryer Area Centrifuge Area Polymer Storage Centrate Treatment 38

  40. Biogas Storage • Biogas Treatment & Microturbines Biogas Conditioning Microturbines

  41. Centrifuge Room Thickening Centrifuges Dewatering Centrifuges 40

  42. Dryer System – Lower Level Pellet Screen Dryer Drum 41

  43. Dryer System – Upper Level Solids/Off Gas Separation Recycle Bin Pellet Mixer Dryer Drum 42

  44. Sub-Surface View of 3,028 Piles

  45. Construction Photos

  46. Pile Installation – Digester Area • Construction Photos • Completed: • Construction of structure and

  47. Pile Installation – Basement of Solids Handling Building • Construction Photos

  48. Installation of Piles in Methane Digester Area • May 2014 Quarterly Report

  49. Installation of Piles in Solids Handling Facility • May 2014 Quarterly Report

  50. Project Schedule

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