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INTEGRATED SYSTEM FOR THE TREATMENT OF MUNICIPAL WASTEWATER AND BIODEGRADABLE SOLID WASTE

“ Water Resources Management : Needs and Prospects ” Jordan, Amman, 22/04/2013. INTEGRATED SYSTEM FOR THE TREATMENT OF MUNICIPAL WASTEWATER AND BIODEGRADABLE SOLID WASTE. Dr. Malamis Dimitris. National Technical University of Athens School of Chemical Engineering

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INTEGRATED SYSTEM FOR THE TREATMENT OF MUNICIPAL WASTEWATER AND BIODEGRADABLE SOLID WASTE

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  1. “Water Resources Management: Needs and Prospects” Jordan, Amman, 22/04/2013 INTEGRATED SYSTEM FOR THE TREATMENT OF MUNICIPAL WASTEWATER AND BIODEGRADABLE SOLID WASTE Dr. MalamisDimitris National Technical University of Athens School of Chemical Engineering Unit of Environmental Science and Technology

  2. INTERWASTE Project • INTERWASTEis co-funded by EU LIFE+ ENVIRONMENT • INTERWASTE Partners • National Technical University of Athens (Greece) • Cyprus University of Technology • University of Nicosia (Cyprus) • ProplanLtd(Cyprus) • Department of Environment Ministry of Agriculture, natural Recourses and Environment .

  3. Aim of present work • Development of an integrated system for sustainable treatment of Biodegradable Organic Waste and Municipal Wastewater with zero discharge • Production of high quality, added value products • Electricity and heat from renewable sources (organic waste) • High quality effluent that can be reused (i.e.irrigation) • High quality soil conditioner-compost • This can be achieved through the integration of aerobic and anaerobic processes by employing: Membrane BioReactor-Anaerobic Digester MBR - AD

  4. Potential users of the integrated MBR-AD system • Generally places where production of waste and demand of the obtained products from waste treatment co-exist: • Remote de-centralized regions • Small communities • Residential areas (i.e. blocks of flats) • Hotels

  5. Flow Sheet diagramMBR - AD MBR AD BIOGAS Digestate

  6. The integrated system The MBR – AD Unit

  7. Operating parameters • MBR • 1,5 m3/d municipal wastewater • sludge outlet– 100 l/d =>toAD • AD • Daily preparation of substrate. Formation of a mixture of 150L with 10% TS consisting of food waste and sludge from the MBR • 150 Lof digestate are separated into liquid and solid phase • Solid phase => solar drier • Liquid phase => recirculated to the MBR

  8. Flow Sheet diagramMBR - AD MBR

  9. MBR – BUFFER TANK • Stainless steal vessel 8,5 m3

  10. Flow Sheet diagramMBR - AD MBR

  11. MBR Feedstock Municipal Wastewater from Buffer Tank (1,5 m3/d) Sludge fed to the Anaerobic Digestion System Sludge Effluent (water) Membrane BioReactor (MBR) system for wastewater treatment

  12. Flow Sheet diagramMBR - AD AD

  13. Homogenization Unit – AD Substrate preparation • Homogenization Unit: • Sludge from the MBR • Food waste • Target 10±2%TS

  14. Flow Sheet diagramMBR - AD AD

  15. Anaerobic Digester Biogas Substrate from the Homogenization Unit • Total volume 8,5 m3 • Operating volume 4,5 m3 • Substrate feed • 150 L/d with 10 % TS • Mesophilic Temperature (≈35oC) • SRT = 20-25days Digestate

  16. AD – Biogas System Biogas Storage (Balloon 3m3) Biogas Composition Analysis Packed bed Scrubber (H2S) CHP unit Biogas Meter Scrubber for biogas cleaning (VOC, ΝΗ3)

  17. Biogas Cleaning System CHP unit for energy production Scrubbers for biogas cleaning

  18. Flow Sheet diagramMBR - AD Digestate

  19. Bag Filter – Treatment of Digestate

  20. ΜΒR performance %COD reduction

  21. ΜΒR Performance TN reduction

  22. ΜΒR Performance - NH4+reduction

  23. AD Performance – Biogas Production Biogas Composition CH4 = 59%, CO2= 40 %

  24. Biogas - Energy Balance 33% 22% 55% Heat Biogas 100% 10% losses Electricity 35% 3.5 % 31.5%

  25. MBR-AD potential applications • Treating Biowaste & Municipal wastewater of a community with population of 1,000 persons in Cyprus • covers the electricity needs of around 55 inhabitants or 19 households • Produces 150 m3/d of water that can be used for irrigation • Treating Biowaste & Municipal wastewater of a 5 star Hotel in Cyprus • covers 3.4% of the needs for electricity and • covers 3.6% of the heating needs • Produces 250 m3/d water that can be used for irrigation

  26. THANK YOU FOR YOUR ATTENTION • Dr.DimitrisMalamis National Technical University of Athens School of Chemical Engineering Unit of Environmental Science and Technology dmalamis@chemeneng.ntua.gr www.uest.grTel: 2107723108Fax: 2107723285

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