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Sustainable Water Management

Sustainable Water Management. Worldwide 90 % of human excrements and urine go to rivers, lakes, to the sea and the ground water - instead of being used for improving soil fertility !. 90 %. Treatment only 10 %. Shortcomings of conventional water systems.

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Sustainable Water Management

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  1. Sustainable Water Management

  2. Worldwide 90 % of human excrements and urine go to rivers, lakes, to the sea and the ground water - instead of being used for improving soil fertility ! 90 % Treatment only 10 %

  3. Shortcomings of conventional water systems

  4. Advantages of sustainablewater management

  5. The aims of sustainablewater management •  Reducing water pollution and sewage •  Saving of scarce and expensive drinking water •  Using grey- and rainwater •  Cleaning wastewater by natural processes •  Recycling nutrients to agriculture for soil fertility •  Biomass energy production

  6. 1st step: Reduce sewage streams by saving water ! ! 2nd step: Separate sewage streams ! 3rd step: Close the nutrient cycle with Black water ! 4th step: Clean and recycle grey water locally ! ... leapfrog the age of sewage pipes !

  7. The first step:REDUCE SEWAGE STREAMS BY SAVING WATER !

  8. The overwelming part of sewage is clean water to sweap pollution away => save water !

  9. The second step:SEPARATE SEWAGE STREAMS !

  10. Sewage separation

  11. Separate sewage water flows: Black water / grey water CHP = combined heat and power

  12. Proper separation of Black water from Grey water prevents infection ! CHP = combined heat and power

  13. The third step:CLOSE THE NUTRIENT CYCLE WITH BLACK WATER !

  14. Nitrogen (N) about 4,5 kg Phosphorus (P) about 0,6 kg Organic matter (BOD) a. 35 kg Total = about 40 kg Resources for soil fertility in Black waterAnnual discharge from one person: Quelle: Prof. Dr. Petter D. Jenssen, Norwegen

  15. Urine and excrements as fertilisers • Urine and excrement matter contain low levels of heavy metals • Hygienic quality can be achieved by proper handling • Organic micropollutants are degraded in soil systems and/or in biogas plants

  16. Vacuum toilets = very low dilution ! 0. 5 - 1. 5 liters/flush Vakuumtoilette Spültoilette

  17. Vacuum toilet • Significantly lower water consumption • Effective collection of sewage • Not more operational problems than conventional flush toilets • High acceptance by the residents

  18. VakT Vacuum toilet technologywell known from trains and ships ! 1660 vacuum toilets on one vessel = about 2km of vacuum sewer line

  19. Vacuum toilets • Small diameter pipes • Piping independent of inclination Vacuum - 50mm Gravity - 110mm

  20. Closing the cycle by biogas production with low flush black water (excrements + urine) and organic wastes (gastronomy, household, garden, agriculture) Quelle: Genesys GmbH

  21. The forth step:CLEAN AND RECYCLE GREY WATER LOCALLY !

  22. Local cleaning of grey water • Re-using grey water: • irrigation • inhouse use • process water • groundwater recharge • local discharge Quelle: Prof. Dr. Petter D. Jenssen, Norwegen

  23. Production of biomass

  24. Production of biomass Biomass = energy source, soil fertility, building material

  25. constructed wetlands

  26. For most purposes clean grey water will do ! Quelle:SVGW

  27. Sustainable Water Management offers economic, decentralisedsolutions for a good water future within the nutrientcycle…

  28. 1st step: Reduce sewage streams by saving water ! ! 2nd step: Separate sewage streams ! 3rd step: Close the nutrient cycle with Black water ! 4th step: Clean and recycle grey water locally ! ... leapfrog the age of sewage pipes !

  29. … but what about the • huge and terribly • expensive sewage • pipe systems and • mostly inadequate sewage treatment stations • … to be built ?

  30. LEAPFROG THE AGE OF SEWAGE PIPES! => go directly towards flexible, independent and economical sustainable water management !

  31. seecon gmbhsociety – economy – ecology – consulting So let’s do projects together: => here in South East Europe !

  32. seecon gmbhsociety – economy – ecology – consulting But where to find the resources for the projects ???

  33. seecon gmbhsociety – economy – ecology – consulting Europe is the opportunity !

  34. seecon gmbhsociety – economy – ecology – consulting Thank you for your attention ! Matthias Zimmermann mobile +41 79 646 02 78 www.seecon.ch

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