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HomeMy WebLinkAboutMSS Presentation Material Commercial Food to Energy ProgamCONSERVATION - OUR EARTH, OUR MISMN, OUR 108 Central Marin Commercial Food -to - Energy (F2E) Program 3RCC ITEM W0dt8ridl OiVe| What is Anaerobic Digestion? Anaerobic digestion (also known as food -to -energy (F2E) is the decomposition of organic solids in an oxygen -free environment. Through this technique, a natural biogas is created (consisting primarily of methane gas) which is captured and utilized as a source of renewable energy. 8ydiverting food waste from landfills, fugitive green house gas (GHG) emissions are averted. Food waste is very biodegradable and has a much higher volatile solids destruction rate than bioso|ids. Therefore, residuals will only increase slightly and may beused nsonalternative daily cover. Electricity for CMSx and future sale A2DOOstudy revealed that 27Y6or4,7OUtons of solid waste disposed of at Redwood Landfill by K4SS, isfood waste. Currently, the U.S. only diverts 3Y6offood waste from landfills; most taken tncompost facilities that donot capture thebiogases.z Food isthe largest single source ofwaste inCalifornia accounting for 1696 percent ofthe Commercial waste streann.u I Cal Recovery 2OU8)ASS Waste Characterization Study, 2. [alifomia 2008 Statewide WastmCharactenization Stud (CWGP&) Pa(TcIl N71711 0=0 $10mr = IN Initially, K4SSwill only becollecting pre -consumer food waste from select high volume commercial customers, including vegetable trimmings, waste from food preparation, and spoiled food. Due to the necessary processing machinery for anaerobic decomposition, the feed stock collected must befree ufcontaminants. Aclean feedstock will minimize the costs from equipment failures and keep rate increases to o minimum. ideally, once commercial customers are adept atsorting pre -consumer waste, MSS will begin training for collection ofpost- consumer waste aswell (table scraps). 2012 MUNNIMIR M, w After extensive kitchen employee outreach and education on best pre-sorting practices, IVISSvviU collect pre -consumer food waste from the established commercial sites. * The food waste will be trucked to the Transfer Station at KXSS where it will be sorted and ground into a slurry -like substance. w The slurry isthen transferred toCK4SA^e/1oufamile away, where itgoes through afinal processing stage and isadded tothe slurry tank. * As the bacteria begin to decompose the slurry, biogas is collected and used in a co -generator to power the plant. The path to F2E Permitting K4S5has demonstrated CE[y\compliance without need for another Negative Declaration or Environmental Impact Report. This isbecause food waste ixalready apart nfitmunicipal solid waste stream and isidentified inits existing Solid Waste Facility Permit documentation. CIVISAalready has anaerobic digesters operating nnsite utilizing binso|idsasafuel source. They submitted an Enforcement Agency notification that was approved in October 2012. Construction * Complete construction ofCIVISAfacility expected fall 2Ol2. * K4S3and [IVISAwill develop F2Eprogram agreement November ZO12. * Transfer station improvements byK4SS expected tostart late fall 2O12. Program start Anticipated start early 201]. Food waste has 3X the methane production potential a8bi0OVlidS| Cattle manure = 25m 3 z Food Waste = 376 m gas/ton According ioureport 6vthe East Bay MUD facility, IOtons o[food waste per day will power 80-140 homes for the year * Alocal renewable energy project • Increases CD4SA`oenergy self sufficiency and uses existing infrastructure • Potential for CMSA10export energy (in the future) • Reduces green house gas emissions — 2,DV0metric tons w Reduces landfilling offood waste Greenhouse Gas Carbon Dioxide Eauivalent of Commercial Food Waste 14 X Landfill Aerobic Anaerobic Anaerobic (with Methane Composting Digestion with Digestion with Fuel Capture) Cogan Engine ceo 7&41�9 sawe" scuzece & Central Marin Sanitation Agency San Rafael Cily Council Presentation November 5, 2012 Presentation Outline Central Marin's Commercial Food -to -Energy (F2E) Initiative Public -Private Partnership — CMSA and Mann Sanitary Service CMSA and MSS Service Areas F2E Timeline What is F2E? MSS Project Elements Roll-out plan Equipment Installation Timeline Transfer Station Improvements CMSA Project Elements Treatment plant F2E/FOG facility Anaerobic Digestion and Energy Production Program Permitting, Benefits, and Next Steps Questions and Comments 0 Ouk missim OuR JOB .k.entral Marin Sanitation Agency Commercial Food 'Waste to Energy Central Marin Food Waste Biogas (methane) CMSjl-—Aerial View Public -Private Partnership Central Marin Sanitation Agency mApublic agency 0 About 120.O0Ocustomers inCentral Marin 041 employees Treatment & disposal of about 11 million gallons ufwastewater per day, peak flow = 115 MGD �Treatment & beneficial reuse nfbioso|ids � Re ! to function -indus��|. commercial buainessea, res taunants' and dental offices � Public education - Marin County �Various contract services tolocal agencies Public -Private Partnership /*�' 7-m=J \J�_Wv Marin Sanitary Service (MSS) a private saw= � Provides solid waste (SVV)collection and recycling services toMarin County since 1948. � Serves nine jurisdictions within the County of Marin � Serves > 33,000 accounts providing nefuee, reoyo|ing, and yard waste collection processing � Processed over 27O.00tons ofsolid vvaete, organics, and naoyc|ab|es in 2011 11 F2E Timeline Methane Capture Feasibility Study completed -joint project by CMSA/City of San Rafael/MSS I Presentation to cities/town F2E Predesign completed — focus on CMSA facilities CEQA review completed 152010 F2E integrated into CMSA Digester Improvement Project 1v 2011 MoU for F2E program executed between MSS and CMSA What is Food to Energy? 311111011111111 Soil Amendment and Fertilizer 9 Food Waste o Energy Food is the largest single F2E In Marin County source of waste in A Public and Private Partnership In Foodwaste to Ener" California Collection and processing 0 -16% percent of the Commercial waste stream 0 -25% of the Residential waste disposed The primary goal ofFood Waste to Energy (F2E) is the diversion of organic waste from the landfill and the creation of energy. Central Marin Sanitation Agency I Food Energy / ����� vv���o= �� �|na2OO8Marin Sanitary Service (W1SS)Waste Characterization study performed byCal Recovery itwas found that 27.1 Y6or 4.700 tons of solid waste sent to Redwood Landfill by MSS, in food waste. � There are over 200 large food waste generators (rasbaunants, de|io, grocery stores) in the MSS service area. � Mill Valley Refuse has expressed interest inthe program, and has 6O-G0food waste generators intheir area � The amount offood waste expected hobeset out for collection inthese areas imestimated tobebetween 10-15tons per day between the two haulers. MSS Roll Out Plan 12 Pre -consumer commercial food waste would be collected and then transferred tothe MSS Transfer Station for processing horemove contamination and then transported toCMSA. � Eventually include post- consumer food waste � Roll-out will be used by MVRS and MSS �Recruit top 2&-25commercial food waste producers � Continue adding incrementally � Program outreach � Kitchen staff training Frequent monitoring 9 MSS Installation Timeline WMkA r-ew pm�r held Pawrkal I'M MINE 4 ------- Fire srrinkL� 1 0 1- improvements at the MSS Transfier Station L ' Food waste will be collected and transported to MSS where it will be emptied into a collection bunker which will feed a series of processing belts allowing staff to remove contaminants Food waste can be collected by Mill Valley Refuse and transported to the MSS transfer station for processing. Clean food waste will be ground to <I" and loaded into water -tight dumpsters for transport to the CMSA plant for processing I Improvements at CMSAs Wastewater Treatment Plant 10 F2E/FOG Facility October 2012 Drum Screen Paddle Finisher 11 Digestion -Anaerobic Digesters 12 Digestion and Energy Production at CMSA CMSA has been in the digestion and energy generation business for 25 years Existing biogas provides for about 9-12 hours/day power Natural gas used for remaining hours during day Food waste and Grease (FOG) digest to produce biogas to offset natural gas us.•- ge .r- age Save Save on electricity expenses IN 750 kW (11000 hp) Engine Generator 14 � Discussions with Marin County Environmental Health Services (Ca|ReoydeLocal Enforcement Agency -LEA) � LEA and Cu|Reoyoesite visit and discussions � Submitted anEnforcement Agency Notification — approved in October 2012 * Two amendments tothe MSS SVVFPwere filed * The purpose ofthese amendments was toidentify the design and operations that mitigate orcontrol potentially adverse environmental impacts. � Received LEA approval August 7.2O12 Benefits ofF2E Program *Alocal renewable energy project * Increases CKASAa energy self sufficiency and uses existing infrastructure * Potential for CK8SAtoexport energy (future) * Reduces green house gas emissions —2'O00metric tons � Reduces landfilling of food vvaoha � According too report bythe East Bay MUD facility, 1Otons of food waste per day will power 8O-14Ohomes for the year IN Benefits- Reduces Carbon Footprint 11 Less CO, than landfill or composting 11 Less CO2 from shorter truck hauls m Renewable energy replaces energy from fossil fuels Greenhouse Gas Carbon Dioxide Equivalent of Commercial Food Waste '4 17777Z7777,77777`7`77-7 Landfill Aerobic Anaerobic Anaerobic {with Methane Composting Digestion with Digestion with Capture) Cogen Engine Fuel Cell Next Steps 13 VISS and CIVISA to develop F program agreement * Transfeg, station improvements by MSS — winter 2012 * Education and training of MSS commercial facility staff * Recruitment, education and training of large food waste generators 16 17