Presentation on theme: "So Cal Alliance of POTWs Energy Management/Biosolids Committee"— Presentation transcript:
1Irvine Ranch Water District Michelson Water Recycling Plant Biosolids & Energy Recovery Project So Cal Alliance of POTWsEnergy Management/Biosolids CommitteeSteve Malloy, Principal EngineerAugust 12, 2014
2Presentation Overview IRWD BackgroundMWRP Biosolids & Energy Production Facilities3-D Model RenderingsConstruction PhotosProject Schedule
3IRWD ServicesDrinking Water4 Water Treatment Plants, 26 Wells miles of water pipelineSewage Collection miles of collection pipelineRecycled Water 2 Recycled Water Plants miles of recycled water pipelineUrban Runoff Treatment San Joaquin Marsh prototype 31 wetland treatment sites
6Biosolids & Energy Recovery Project Project Objectives:Beneficially reuse Biosolids and Biogases 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 a factor of four.Reduces greenhouse gas effects by beneficially using pellets locally as a fertilizer or e-fuel.
7Biosolids & Energy Recovery Project Project Description:IRWD to construct facilities at MWRP for:Biosolids digestion, dewatering and dryingBiogas management and energy recoveryOdor control systemsIRWD 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).
15Heat Drying System Baghouse Preseparator Venturi Scrubber FurnaceMixerID FanPelletCoolerTo Storage SilosCake from dewateringCake BinRecycleBinRTOVenturi ScrubberCondenserTriple Pass Drying DrumGas RecirculationPneumatic TransporterAtmospherePreseparatorBaghouse
16Heat Drying SystemProduces a pellet suitable for local beneficial reuseNitrogen for fertilizerBtu content for e-fuelDryers in CA:Encina (Carlsbad)SacramentoCorona
17Alt. 3 – Microturbines Biogas Priorities: Use in the micro-turbines to get SCE incentives.When dryer and micro-turbines are off, use in boilers to heat digesters, if needed.Excess biogas (very little) diverted to enclosed gas burner.Use natural gas in the dryer.
18Electrical Power Summary MWRP Recycled Water Production(MGD)Recycled Water Treatment Electrical Demand(MW)Biosolids Handling Electrical DemandTotal MWRP Electrical DemandMicro-Turbine PowerGeneratedPercent of Power Self-Generated18.104.22.168.015%222.214.171.124.518%Biogas Production (Digestion)Power Generation (Microturbines)Power Use (Aeration Blowers)Continuous biogas production and power generation.All power used on MWRP site.
30Installation of Piles in Solids Handling Facility Construction PhotosInstallation of Piles in Solids Handling Facility
31Pile Installation – Digester Area Construction PhotosPile Installation – Digester Area
32Installation of Piles in Methane Digester Area Construction PhotosInstallation of Piles in Methane Digester Area
33Construction PhotosAerial View of Western Half of Biosolids Site – Solids Handling AreaDryer AreaCentrate TreatmentElectrical RoomSludge Wet WellsDigester Feed PumpsSludge Receiving Basement
34Rebar Installation for Wall of Solids Handling Building Basement Construction PhotosRebar Installation for Wall of Solids Handling Building Basement
35Aerial View of Methane Digesters and Sludge Holding Tanks Construction PhotosAerial View of Methane Digesters and Sludge Holding TanksMethane Digester No. 1Methane Digester No. 2FOG Receiving AreaDigester Control Building AreaMethane Digester No. 3Sludge Holding Tank No. 1Acid Digesters AreaSludge Holding Tank No. 2Digester Sludge Pump Station
36Rebar Work for Methane Digester No. 3 Construction PhotosRebar Work for Methane Digester No. 3
37Formwork and Rebar Work for Methane Digester No. 3 Wall Construction PhotosFormwork and Rebar Work for Methane Digester No. 3 Wall
38Finished Concrete Work of Methane Digester No. 2 Wall Construction PhotosFinished Concrete Work of Methane Digester No. 2 Wall
39Basements of Methane Digesters Nos. 1 and 2 Construction PhotosBasements of Methane Digesters Nos. 1 and 2
40Rebar and Concrete for Work of Sludge Holding Tank No. 2 Construction PhotosRebar and Concrete for Work of Sludge Holding Tank No. 2
42Project Schedule DATE ACTIVITY April 29, 2013 Notice of Award June 3, 2013Notice to ProceedSept – March 2014Pile DrivingJanuary 17, 2016Anaerobic Digestion Facilities OnlineMarch 2, 2016Produce Class B Biosolids (Cake)June 30, 2016Microturbine Power Generation OnlineAugust 29, 2016Produce Class A Biosolids (Pellets)October 28, 2016Project Completion
43Contact Information: Steve Malloy, P.E. Irvine Ranch Water District (949) (business hours)