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On- site greywater treatment and reuse

On- site greywater treatment and reuse. applications , quality requirements , treatment solutions. 5th June 2013 Beirut, Lebanon. I am…. Markus Sellner Degreed engineer of Environmental protection Living in Göttingen / Germany Productmanager for decentralised water management

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On- site greywater treatment and reuse

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  1. On-sitegreywatertreatmentandreuse applications, qualityrequirements, treatmentsolutions 5th June 2013 Beirut, Lebanon

  2. I am… Markus Sellner Degreedengineerof Environmental protection Living in Göttingen / Germany Productmanagerfordecentralisedwatermanagement Employeedat DEHOUST since April 2008

  3. 1. Whatis on-sitegreywaterreuse?

  4. 1. Whatis on-sitegreywaterreuse? Definitions Greywater = partofthehouseholdwastwaterwithoutfaecal matter andurine (blackwater). Greywateristhedrainfrombathtubs, showertrays, washbasinsandwashingmachines. Itmay also containhigh-pollutedkitchenwastewater. (British standard 8525-1:2010) Processwater = waterwith different qualitycharacteristicsthandrinkingwater servingcommercial, industrial, agriculaturalorsimiliarpurposes (DIN 4046).

  5. 1. Whatis on-sitegreywaterreuse? General flowschematic decentralised greywatertreatmentsystem

  6. 1. Whatis on-sitegreywaterreuse? Ideal buildingtypes

  7. 1. Whatis on-sitegreywaterreuse? Distribution ofwaterconsumption in residentialbuildings Drinkingwater Treatedgreywater 33 % toilet 38 % bodycare 13 % laundry 2 % drinking/cooking 5 % others 7 % dishwashing 2 % gardenirrigation saving potential around 50 %

  8. 1. Whatis on-sitegreywaterreuse? Typicalwaterconsumption in buildings • Existinginformationsheetsandguidelines just giveestimations/recommendations • fbrinformationsheet H201 • British Standard 8525-1 • DIN 1989-1 aboutrainwaterharvestingsystems Greywater Processwater *showers, bathtubs, handwashbasins L = litre; p = person; d = day; m² = squarmeter; a = year

  9. 2. Quality requirementsforreuse

  10. 2. Quality requirementsforreuse Code ofpracticeforgeneralrequirements hygienical / microbiologicalsafe colorlessandclear particlefree freefromunpleasantodouremission • British Standard 8525-1: 2011 aboutgreywaterreuse • EU bathingwaterguideline 2006/7/EC • DIN 19650 hygienicconcernsofirrigationwater

  11. 2. Quality requirementsforreuse Code ofpracticeofgeneralrequirements hygienical / microbiologicalsafe colorlessandclear particlefree freefromunpleasantodouremission • British Standard 8525-1: 2011 aboutgreywaterreuse • EU bathingwaterguideline 2006/7/EC • DIN 19650 hygienicconcernsofirrigationwater comparing German limitsaboutcoliformbacteria: raw milk: 10.000 cfu/100 mL soft cheese: 1.000 cfu/g mincedmeat: 5.000.000 cfu/g

  12. 3. Treatment technique

  13. 3. Treatment technique General flowchart

  14. 3. Treatment technique combination of aerobic biological sludge treatment and external submerged membrane filtration system. Ultrafiltrationflatsheet membranes separating activated sludge from biologically treated wastewater.

  15. 3. Treatment technique • stateoftheart in Europe • exceeding all guidelines • 100% barrierforsludge/particles • 99,9% barrierforgerms • absolut clearwater • smallfootprint • eco-friendlywithoutchemicals • packagedsystembysystemmanufacturer • highinvestmentcosts • maintenancecosts

  16. 3. Treatment technique combination of aerobic biological sludge treatment and UV-desinfection batches: fill => react/aeration => settle => decant

  17. 3. Treatment technique • with UV-desinfection • stateoftheart in Europe • exceeding all guidelines • 99,9% barrierforgerms • eco-friendlywithoutchemicals • lowmaintenancecosts • lowenergyconsumption • not guaranteedclearwater (e.g. foam) • UV-efficiencydepends on biologicalefficiency • large footprint

  18. 3. Treatment technique • constructedwetlandswith additional desinfection • combinedtreatmentsystems(sandfilter, carbon-filter, chlorinestation) • multi-layer-filters • not commonandproven in long-term-operation • insufficientbiologicaltreatment => odour, foam,… • mixedtechnology– nopackagedandtestedunits

  19. 4. LEED-Certification

  20. 4. LEED-Certification 110 possiblepoints Simple certificate: 40 – 49 Points Platinum certificate: 80 Points orhigher

  21. 4. LEED-Certification 110 possiblepoints Simple certificate: 40 – 49 Points Platinum certificate: 80 Points orhigher

  22. 5. Audiance Discussion Time forquestions

  23. Thankyou foryourattention !

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