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Building A Better Biosolids Future

Building A Better Biosolids Future. A Brief History Sewage Treatment in Detroit. “ The Grand Sewer” 1836 The Fairview Sewer 1913 The Detroit WWTP 1940. A Brief History The Detroit Waste Water Treatment Plant. Primary Treatment Incineration of solids

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Building A Better Biosolids Future

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  1. Building A Better Biosolids Future

  2. A Brief HistorySewage Treatment in Detroit • “The Grand Sewer” 1836 • The Fairview Sewer 1913 • The Detroit WWTP 1940

  3. A Brief HistoryThe Detroit Waste Water Treatment Plant • Primary Treatment Incineration of solids Disinfection of effluent • Secondary Treatment added in 1972 Aeration tanks Final clarifiers Cryogenic oxygen plants Additional sludge handling facilities

  4. DWSD WWTP Today Serves more than 3 million people in 78 communities. The largest single-site wastewater treatment plant in the U.S. Budget over $100 million/year, 800 employees. Design Flow: 930 MGD, Peak Flow: 1720 MGD Effluent discharged to Rouge and Detroit Rivers Produces over 500 dry tons of solids per day

  5. A System Showing its Age • Multi-Hearth Furnaces • Landfilling Ash and some solids • Million $$ upgrades necessary

  6. Working to Upgrade Solids Management 2001 Detroit signed a 15-year, $25 million/yr, contract with Minergy Detroit LLC 2003 Synagro bought out Minergy. Synagro proposes conversion to a 25-year contract. Nov 2007 Detroit city council approves contract awarding Synagro the management of a minimum of 73,000 dry tons of material per year.

  7. Experience = Peace of Mind Current Synagro Projects • Bronx, NY • Baltimore, MD • Back River WWTP • Patapsco WWTP • Pinellas, FL • Sacramento, CA • Hagerstown, MD • Honolulu, HI DWSD WWTP

  8. Interim Management Options 80% managed by Synagro

  9. Incineration & Landfill INCINERATION • Fluidized bed technology • Lower operating temperatures and more complete combustion • More energy efficient • Lower air emissions • LANDFILL • Back-up for land application • Ash dewatering and disposal

  10. Land Application • Use and recycling – NOT disposal • Protection of Public Health • Protection of Surface and Groundwater • Aesthetic Concerns • Application in compliance with MDEQ Regulations

  11. Where Land Application will occur Lenawee St. Clair Livingston Monroe Jackson Ingham Shiawassee Genesee Sanilac Lapeer Macomb Hillsdale Oakland Washtenaw • Farmer interest high • Spreading season ~ May-Dec., • Landfilling in winter

  12. Quality Equals Value • Metals below EPA Part 503 Table 3 pollutant limits • Meet EPA Part 503 Class B Pathogen and Vector Attraction Reduction requirements • Used for agriculture & reclamation • Economic value $ 250/acre Nutrient Value Per Acre* Nitrogen (N) $99.43 Phosphorous (P) $60.05 Potassium (K) $9.22 Magnesium (Mg) $17.36 Copper (Cu) $1.23 Zinc (Zn) $5.05 Lime $54.00 Spreading/Tillage $7.50 $253.84/ Acre * Prices as of 1/3/08, Auburn Fertilizer That’s over $1,300,000 annually!!

  13. Hauling and Spreading Cake Biosolids • Delivery in sealed dump trailers via approved haul routes • Unloading in designated staging areas • Loading to standard cake spreader

  14. Cost savings for YOU!

  15. Public Education • Increase biosolids awareness statewide • Proactive approach • Increased involvement with local groups • Farm Bureau • NRCS

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