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Milwaukee - Resource Recovery - Sustainable Water Reclamation (SeWeR)

Milwaukee - Resource Recovery - Sustainable Water Reclamation (SeWeR)






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    Milwaukee - Resource Recovery - Sustainable Water Reclamation (SeWeR) Milwaukee - Resource Recovery - Sustainable Water Reclamation (SeWeR) Presentation Transcript

    • Urban Water Sustainability Leadership Conference, 2011 Clean Water America Alliance Resource Recovery: Sustainable Water Reclamation (SeWeR) Milwaukee Metropolitan Sewerage District Tim Bate, PE, Director of Planning, Research & Sustainability Karen Sands, AICP, Manager of Sustainability
    • Words Matter A vocabulary of truth andsimplicity will be of service throughout your life. -Winston Churchill
    • Our Talk Today•MMSD Background•Visions for the Future•Energy at MMSD•Resource Recovery at MMSD
    • • Regional Agency • Established by State Law• Provide water reclamation and flood management
    • MMSD SewersMunicipally Owned Sewers Private Laterals
    • Water Pollution Abatement Program (WPAP) • Treatment Plant Upgrades • ISS (a.k.a. Deep Tunnel) • Sewer RehabilitationA $3 billion investment
    • Below GroundGallons of Storage Long In Diameter
    • The Deep Tunnel has kept91 Billion Gallons of pollution out of Lake Michigan
    • A Path to the Future
    • MMSD 2035 Vision’s Strategic Objectives1. Integrated Watershed Management a) Zero CSOs and SSOs b) Integrated management of urban and rural stormwater2. Climate Change Mitigation/Adaptation with an emphasis on Energy Efficiency a) Use 100% renewable energy sources, with 80% being self-produced b) Reduce MMSDs carbon footprint by 90% from its 2005 baseline
    • Current MMSD Energy Situation Summary • Energy costs are significant to MMSD • MMSD has significant carbon footprint • Natural gas is most significant energy source: • Financially • BTUs JI Natural Gas • Carbon footprint • Reductions in energy use can save money
    • Energy at MMSD• Purchased Energy• Produced Energy  From Effluent  Other On Site
    • Purchased Energy• Energy Budget (2011): ~$13M• 16% of O&M budget• By Cost: 70% gas, 30% electricity• By BTU: 90% gas, 10% electricity• Total BTUs purchased at WRFs is~10,000 Wisconsin residential homes
    • Produced Energy• From Treatment Process  Waste Heat  Biogas• Onsite  Solar PV  More Solar + Wind on the Horizon…
    • Produced Energy From Effluent ProcessWaste Heat: JI Turbines:Natural Gas to ElectricityBiogas: SS Digesters + EngineGenerators: Biogas to Electricity +Heat
    • Waste Heat• Turbines are source of waste heat• Saves on purchase and use of natural gas in solids drying• Generates electricity instead of purchase
    • South Shore WRF Biogas• BioGas converted to electrical power by Engine Generators• Air Used in Secondary Treatment• Heat Used in Digestion Process•Biosolids can be Transferred via 11-mile Pipeline
    • Future: MMSD Landfill Gas Project• VES Owns Emerald Park Landfill (EPL) in Muskego, 15 Miles from JIWRF• Agreement: MMSD + VES• 16” LFG Pipeline from EPL to JIWRF• Replace existing NG turbines with turbines capable of burning LFG Initially 3 turbines, up to 2 more• Save $ & Reduce Carbon Footprint• Gas Now Flared Off• Total Pipeline Cost ~ $43M
    • LFG Turbines• New Turbine building• 3-5 Solar Mercury 50, 4.8 MW Turbine-generators • High Efficiency, Low Emissions • Lower Temperature Exhaust • Need to Heat Dryers Using NG, Along with Using Waste Heat from Turbines• Total Cost: $61.5M
    • Produced Energy•From Effluent Process •Waste Heat •Biogas (now & future)•Onsite •Solar PV •More Solar + Wind on the Horizon…
    • Solar PV•20 kw: Rooftop of D&D Building•Produced 93,324 kWhWebsite:http://view2.fatspaniel.net/PV2Web/merge?&view=PV/standard/Simple&eid=189343
    • Maximize Use of Renewables • Landfill Gas • SS Digester Thickening & Mixing, Co-digestion • Regional Biosolids/High Strength Waste • Excess “waste” heat • Sewer Thermal • Solar, Wind • Renewables Project GapMinimize Energy Use (Conservation/Technologies) • Energy Management and Controls • JI Turbines • Hybrid Fleet Replacement • Water Conservation (complete) • HVAC Upgrade (complete) • Lighting (complete) • JI Aeration AFP, Aeration/Blowers • SS Aeration Optimization • Conservation Project Gap
    • Nutrient Recovery at MMSD• Milorganite• Future  Trading  Other?
    • Milorganite: A True Original• Developed in 1926 by Dr. O.J. Noer• Originally: Commercial Turf & Vegetable• Milorganite has been a Mainstay in the Turf Industry for 85+ Years• MMSD: One of the Nation’s Oldest Recyclers
    • What is Milorganite?• Milorganite is Derived from Dried Microbes• Iron is Added in the Treatment Process• Iron Becomes Organically Complexed to Microbes• Dried at 1,200º F for Over 30 Minutes• Daily and Weekly Laboratory Analysis toGuarantee Safety and Nutrient Analysis
    • Benefits of Milorganite• Non-burning• Eco-friendly• Safe for Kids and Pets• 4% Iron for Deep Greening• Slow Release Nitrogen• Can be Used Everywhere• Inexpensive Organic
    • Paradigm Change Industry-Wide • Words  Stop Saying “Waste”  Start Saying “Resource” • Goals  Energy Independence  Resource Recovery
    • How We Talk About This Matters!!!!!
    • Questions?
    • Extra slides below…insert themwherever (and if) they make sense.END HERE!!!!!
    • LFG Project RolesMMSD: • Design, Construct, Own & Operate 16” LFG Pipeline from EPL to JIWRF • Replace existing NG turbine with turbines capable of burning LFG  Includes a major building addition  Initially 3 turbines, up to 2 moreVES: • Design, construct, own and operate LFG treatment and compression system
    • LFG Pipeline• 16” Diameter• 19 Miles Long  5.6 Miles Convert Steel Pipe  13.3 Miles New HDPE• <100 psi• Total Cost: ~$43M
    • 2009 Green Energy Methane Gas Solar Power $800,000 http://v3.mmsd.com/Sustainability.aspx
    • Landfill Gas -to- Green Power Greenhouse Gas Reduction 500,000 Tons Customer Savings $10’s of Millions
    • Existing JI Combined Heat and Power Process Excess waste heat Natural Gas (when not using turbines Waste heat to Milorganite dryersWE Electricity, dryweather,weekends 2-15 MW Natural Electricity for Gas Turbines and Plant Needs Generators (wet weather, Natural Gas 24 hours/day, 5 days/week
    • LFG Purchase Contract and Financials• Full start up in January 2013• 20 year contract to purchase LFG at 48% of NYMEX• Net savings: “$10’s of millions” – Actual savings dependent upon NG price and actual quantity of LFG
    • LFG Supply2,500,0002,000,000 5 Turbines1,500,000 3 Turbines1,000,000 500,000 MMBtu Projected Maximum Guaranteed Minimum 0 2016 2029 2013 2014 2015 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2030 2031 2032 Year
    • Jones Island Stationary Combustion SourcesBefore and After Landfill Gas Project (based on 2007 fuel usage data) GHG Emissions in Metric Tons of Equivalent CO2 ~95% Reduction
    • Other Projects With Significant $ Savings• Jones Island Aeration – High efficiency blowers – Up to $600K/year savings• South Shore Process Control – Control blowers via ammonia and DO probes – Up to $200K/year savings• Digester Mixing – Increase SS digester gas production – Up to $800K/year savings
    • Combined Heat and Power Process with Landfill Gas Excess waste heat Natural Gas Waste heat to Milorganite dryersPurchaseelectricity if notenough LFG 3-5 4.8 MW gas turbines Electricity for Plant Landfill Needs, Gas Natural Gas
    • Template slide•Stuff•Stuff•Stuff