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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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Presentation on theme: "Composting of sewage sludge - Windrow turner applications Dipl.-Ing. Karsten Runge, BACKHUS GmbH Sigulda, 2008-04-25."— Presentation transcript:

1 Composting of sewage sludge - Windrow turner applications Dipl.-Ing. Karsten Runge, BACKHUS GmbH Sigulda,

2 1. Sewage sludge treatment in Germany 2. Composting of sewage sludge 3. Windrow turner applications content

3 1. Sewage sludge treatment in Germany general figures

4 1. Sewage sludge treatment in Germany tendency – decreasing amount of sewage sludge

5 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: Compost from sewage sludge – future outlook

6 2. Composting of sewage sludge general process design pre treatment (shredding, mixing) composting (regular turning & monitoring) fine treatment (screening) sewage sludge Compost structure material

7 Moisture C/N Ratio Oxygen 2. Composting of sewage sludge composting process design Main influences in composting process

8 2. Composting of sewage sludge increasing capacity process control hygenisation homogenisation turning makes the difference

9 3. BACKHUS Windrow Turner applications BACKHUS – Slupsk, Poland – t/a sewage sludge start:1999 structure:straw, green waste rotting:8 weeks turning:2 times per week product:agriculture & landscaping

10 3. BACKHUS Windrow Turner applications BACKHUS – Vilnius, Lithuania – t/a sewage sludge start:2005 structure:green waste rotting:3 month turning:1 - 2 times per week product:landscaping & agriculture

11 3. BACKHUS Windrow Turner applications BACKHUS 5.45 – Chojnice, Poland – t/a sewage sludge start:2000 structure:straw & bark rotting:6 month turning:1 - 2 times per week product:landscaping, agriculture, gardening, nurseries

12 3. BACKHUS Windrow Turner applications BACKHUS – Elk, Poland – 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

13 3. BACKHUS Windrow Turner applications BACKHUS – Lezajsk, Poland – 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

14 3. BACKHUS Windrow Turner applications BACKHUS – Rumianek, Poland – t/a sewage sludge start:2006 structure:straw, chicken manure rotting:3 -4 month turning:1 times per week product:landscaping & gardening

15 3. BACKHUS Windrow Turner applications BACKHUS – Sarzyna, Poland – t/a sewage sludge start:2006 structure:straw rotting:6 month turning:2-3 times per week product:landscaping

16 3. BACKHUS Windrow Turner applications BACKHUS – Swarzewo, Poland – t/a sewage sludge start:2001 structure:straw, green waste rotting:6 month turning:2 times per week product:agriculture, gardening

17 3. BACKHUS Windrow Turner applications BACKHUS – Nordhorn, Germany – t/a sewage sludge start:2003 structure:straw rotting:2 - 4 month turning:2 - 3 times per week product:agriculture

18 3. BACKHUS Windrow Turner applications BACKHUS – Asendorf, Germany – t/a sewage sludge start:2005 structure:green waste rotting:6 - 8 weeks turning:1 - 2 times per week product:agriculture

19 3. BACKHUS Windrow Turner applications BACKHUS 9.45 – Luxemburg – 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

20 3. BACKHUS Windrow Turner applications BACKHUS 5.45 – Nihyregyhaza, Hungary – t/a sewage sludge start:2002 structure:straw rotting:8 -12 weeks turning:2 - 3 times per week product:agriculture

21 BACKHUS Egypt – t/a sewage sludge 3. BACKHUS Windrow Turner applications start:2005 structure:straw rotting:6 weeks turning:3 times per week product:agriculture

22 BACKHUS – drying of sludge from WWTP – Australia – t/a 3. BACKHUS Windrow Turner applications

23 BACKHUS – composting of sugar cane waste – Columbia – t/a 3. BACKHUS Windrow Turner applications

24 Widest range of customer based project solutions 3. BACKHUS Windrow Turner applications

25 For more information please visit Thanks for your attention! We supply solutions – not machines only!


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