Green Building Water Technology: Use of Renewable Water Resources in Multi-Storey Buildings

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1 Green Building Water Technology: Use of Renewable Water Resources in Multi-Storey Buildings Speaker: Erwin Nolde, Berlin Wasserforum für f r die EMA-Region 11. und 12. März 2010 in der Handelskammer Hamburg

2 Conventionel water supply and wastewaster treatment + Chemicals Raw water pumping Drinking water treatment Distribution Drinking, cooking Kitchen sink Bath tub Shower Hand washbasin Laundry Toilet + Chemicals Wastewater treatment Water bodies Conventional water supply and wastewater treatment technologies are not resource-efficient efficient!

3 Conventional water supply and wastewater treatment in urban areas including greywater recycling + Chemikalien Raw water pumping Drinking water treatment Distribution Drinking, cooking Kitchen sink Bath tub Shower Hand washbasin Laundry Toilet Greywater recycling plant Kläranlage Wastewater treatment Fertiliser factory Water bodies + Chemicals Greywater recycling saves energy and chemicals and establishes suitable conditions for the recovery of nutrients from wastewater for use as fertilisers.

4 Bath tub Shower Hand washbasin Laundry Kitchen Toilets Wasser recycling = greywater treatment Wastewater treatment Fertiliser production Water Treatment Drinking water supply. Storage/ Pre-treatment Screen/Filter Sedimentation Biological treatment: planted soil filter multi-stage biol. contactor + Sedimentation/Sandfilter multi-stage fluidised bed + Sedimentation/Sandfilter membrane bioreaktor Disinfection Chlorination UV-light Emergency supply Storage + Distribution Toilet flushing Laundry Room cleaning Irrigation

5 Requirements for Greywater Recycling 1. Hygienic safety 2. No comfort loss 3. Environmental compatibility 4. Low-maintenance and affordable technology Literature: Innovative Water Concepts: : Service Water Utilisation in Buildings, Senate Department for Urban Development, Berlin (2003) oekologisches_bauen/ _bauen/download download/ modellvorhaben/betriebswasser betriebswasser_englisch2007.pdf fbr Information Sheet H 201: Greywater Recycling (2005)

6 Euro / Jahr year Development of water and fuel costs Anstieg der Wasserkosten im Vergleich zum Benzinpreis (Berlin ) Wasserkosten 4-Personerhaushalt Water costs for a 4-person 4 household Trinkwasser, Abwasser und Niederschlagswasserentgelt (DW, WW & RW) Price Preisentwicklung development for für 1 L super 1 Liter petrol Superbenzin Cent / Liter Water costs 2009: DW: 2.20 /m³ WW: 2.54 /m³ RW fee: 1.84 /m².a Jan 88 Jan 90 Jan 92 Jan 94 Jan 96 Jan 98 Jan 00 Jan 02 Jan 04 Water costs are rising much faster than energy-costs!

7 Multi-stage biological contactor for greywater recycling Arabella-Sheraton Hotel (400 bed), treatment capacity (15-20 m³/d) In Operation since 1995

8 Berlin-Potsdamer Platz: Greywater recycling for property upgrading

9 Berlin-Potsdamer Platz: Greywater recycling for property upgrading

10 Berlin-Potsdamer Platz: Greywater recycling for property upgrading Treatment capacity: 10 m³/d; (250 Persons) Reuse applications: Toilet flushing, gardening Greywater sources: kitchen, washing machines, bathrooms excluding toilets Space requirements: 1993: 800 m² (1987) planted soil filter m² maturation pond 2007: reduced to m² using a fluidised bed reactor and UV-disinfection

11 Greywater Recycling und Heat Recovery Beispiel: Example: Eine A greywater Grauwasser recycling Recyclinganlage plant with mit a capacity einer of 2,000 L/d for Aufbereitungskapazität 50 persons requires a total von ca. of kwh/d L/d (50 Personen) erfordert the treatment ca. 4-6 and kwh/d distribution für die Aufbereitung of greywater. des The Grauwassers potential und of heat Verteilung recovery des from Betriebswassers. warm greywater is: Das 10 C: Wärmerückgewinnungspotenzial ca. 20 kwh/d beträgt: 20 C: 10 C: ca. ca kwh/d, kwh/d bei 20 C: ca. 40 kwh/d

12 Water balance for a 6-storey multi-family house with greywater recycling, Berlin Water Balance Marienburger Str. 31A 82,9% Savings 48% Liter/Person/day ,2 24,4 29,8 25 adults 25 children 19,4 0 German Average DW Marie WW NPW GW-Recycled

13 Greywater Recycling in Jordan

14 Dead Sea Spa Hotel - Jordan Daily water balance (during renovation of the building) 5,0 4,5 4,0 greywater-input service water drinking water GW: 12,6 m³/d; SW: 6 m³/d; DW: 21,6 m³/d 3,5 3,0 m³/h 2,5 2,0 1,5 1,0 0,5 0,0 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 Space requirements dependent on greywater load: reservoir volume ca. 1-2 days Investment costs for a recycling plant of 10 m³/d : ca. 60,000 Payback time at water costs of 5 /m /m³ ca. 5-6 years

15 Greywater recycling in a restaurant in Johannesburg, South Africa Greywater is a resource, greywater recycling an efficient and safe technology. Wasserforum für f r die EMA-Region 11. und 12. März 2010 in der Handelskammer Hamburg

16 Thank you for your attention. Es ist nicht genug, zu wissen, man muss auch anwenden; es ist nicht genug, zu wollen, man muss auch tun. Johann Wolfgang von Goethe (Werk: Wilhelm Meisters Wanderjahre) Greywater is a resource, greywater recycling an efficient and safe technology. Wasserforum für f r die EMA-Region 11. und 12. März 2010 in der Handelskammer Hamburg

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