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Composting of sewage sludge - Windrow turner applications Dipl.-Ing. Karsten Runge, BACKHUS GmbH Sigulda, 2008-04-25
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1. Sewage sludge treatment in Germany 2. Composting of sewage sludge 3. Windrow turner applications content
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1. Sewage sludge treatment in Germany general figures - 2006
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1. Sewage sludge treatment in Germany tendency – decreasing amount of sewage sludge
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1. Sewage sludge treatment in Germany Compost from sewage sludge? – Yes, but quality please! Past situation: - problems with contaminations in compost from sewage sludge - decreasing acceptance for compost in agriculture Present situation: - increasing prices for mineral fertilizer - limited recourses on phosphate (prices +100% since 2004) - decreasing amount of heavy metals in sewage sludge - Farmers starting again thinking about compost Future outlook: 1. ongoing discussion about limits for heavy metals, PCB (“Klärschlammverordnung”) 2. installation of a quality assurance system for compost made from sewage sludge more information: www.vgva.de Compost from sewage sludge – future outlook
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2. Composting of sewage sludge general process design pre treatment (shredding, mixing) composting (regular turning & monitoring) fine treatment (screening) sewage sludge Compost structure material
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Moisture C/N Ratio Oxygen 2. Composting of sewage sludge composting process design Main influences in composting process
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2. Composting of sewage sludge increasing capacity process control hygenisation homogenisation turning makes the difference
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3. BACKHUS Windrow Turner applications BACKHUS 17.50 – Slupsk, Poland – 12.000 t/a sewage sludge start:1999 structure:straw, green waste rotting:8 weeks turning:2 times per week product:agriculture & landscaping
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3. BACKHUS Windrow Turner applications BACKHUS 15.50 – Vilnius, Lithuania – 37.000 t/a sewage sludge start:2005 structure:green waste rotting:3 month turning:1 - 2 times per week product:landscaping & agriculture
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3. BACKHUS Windrow Turner applications BACKHUS 5.45 – Chojnice, Poland – 5.000 t/a sewage sludge start:2000 structure:straw & bark rotting:6 month turning:1 - 2 times per week product:landscaping, agriculture, gardening, nurseries
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3. BACKHUS Windrow Turner applications BACKHUS 16.50 – Elk, Poland – 9.000 t/a sewage sludge start:2006 structure:straw, green waste, wood waste from saw mill rotting:3 -5 month turning:2 - 3 times per week product:agriculture & landscaping
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3. BACKHUS Windrow Turner applications BACKHUS 16.43 – Lezajsk, Poland – 4.000 t/a sewage sludge start:2004 structure:straw, wood waste from saw mill, tobacco waste rotting:6 month turning:2 - 4 times per week product:landscaping & gardening
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3. BACKHUS Windrow Turner applications BACKHUS 16.43 – Rumianek, Poland – 3.000 t/a sewage sludge start:2006 structure:straw, chicken manure rotting:3 -4 month turning:1 times per week product:landscaping & gardening
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3. BACKHUS Windrow Turner applications BACKHUS 16.36 – Sarzyna, Poland – 2.500 t/a sewage sludge start:2006 structure:straw rotting:6 month turning:2-3 times per week product:landscaping
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3. BACKHUS Windrow Turner applications BACKHUS 15.50 – Swarzewo, Poland – 6.000 t/a sewage sludge start:2001 structure:straw, green waste rotting:6 month turning:2 times per week product:agriculture, gardening
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3. BACKHUS Windrow Turner applications BACKHUS 16.55 – Nordhorn, Germany – 10.000 t/a sewage sludge start:2003 structure:straw rotting:2 - 4 month turning:2 - 3 times per week product:agriculture
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3. BACKHUS Windrow Turner applications BACKHUS 16.43 – Asendorf, Germany – 8.000 t/a sewage sludge start:2005 structure:green waste rotting:6 - 8 weeks turning:1 - 2 times per week product:agriculture
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3. BACKHUS Windrow Turner applications BACKHUS 9.45 – Luxemburg – 12.000 t/a sewage sludge start:2000 facility:10 lanes aeration:under floor structure:green waste rotting:4 weeks composting 4 weeks maturation turning:2 - 3 times per week product:agriculture
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3. BACKHUS Windrow Turner applications BACKHUS 5.45 – Nihyregyhaza, Hungary – 7.000 t/a sewage sludge start:2002 structure:straw rotting:8 -12 weeks turning:2 - 3 times per week product:agriculture
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BACKHUS 16.50 - Egypt – 25.000 t/a sewage sludge 3. BACKHUS Windrow Turner applications start:2005 structure:straw rotting:6 weeks turning:3 times per week product:agriculture
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BACKHUS 15.50 – drying of sludge from WWTP – Australia – 40.000 t/a 3. BACKHUS Windrow Turner applications
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BACKHUS 17.50 – composting of sugar cane waste – Columbia – 70.000 t/a 3. BACKHUS Windrow Turner applications
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Widest range of customer based project solutions 3. BACKHUS Windrow Turner applications
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For more information please visit www.backhus.com Thanks for your attention! We supply solutions – not machines only!
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