Flintenbreite. Dipl. Ing. Andrea Albold OtterWasser GmbH, Lübeck, Germany Urban Drainage and Wastewater

Transcription

1 Flintenbreite Dipl. Ing. Andrea Albold OtterWasser GmbH, Lübeck, Germany Urban Drainage and Wastewater Construction of a wwtp for a vegetable wholesaler Ohlendorf, Rehabilitation of the wastewater pond Woltersdorf Authority Woltersdorf Wastewater management strategy for decentraliced regions e.g. Authority Rethwisch Construction of a nitrification stage after an existing pond System Authority Hamwarde 2011 Stormwater management system Rehabilitation Center Malente BfA Cooperation with Kühlert-ter Balk Wastewater Treatment plant for a Solar boat filling station, Valdivia Chile Luri Water Systems, 2010/2011 1

2 Projects outside of the European Community Community-based Water Use in Water Scarce Areas - Improvement of the water management in Amran Basin cooperation with GFA Introdution of ecological sanitation in Low-Cost Buildings in Ethiopia PPP-Project with GTZ Integrated Water Management for the Oasis Béni Abbès, Algeria Cooperation with AHT, Essen Ecological Sanitation Ulaan Bataar, Mongolei GTZ 2006 Support for the Introduction of Ecological Sanitation, PADEAR Bénin PADEAR GTZ/KfW, Conceptual phase Ecological Sanitation Yemen KfW, Integrated technologies Concept and design of the wastewater technology for the residential area Flintenbreite, Lübeck infranova GmbH & Co. KG Operation of the integrated service concept infranova GmbH & Co. KG since 2002 Wastewater concept SolarCity Linz Pichling, Österreich Strategy and design Linz Service GmbH Consultancy of the EU-Life Project Sanitary Concepts for Separate Treatment of urine, faeces and grey water (SCST) KompetenzZentrum Wasser, Berlin Design of the wastewater facilities with urine separation Emscherquellhof Emschergenossenschaft, Essen Design of the wastewater treatment plant of different huts in montainous regions Göppinger-Hütte, Mannheimer-Hütte, Oberzalim-Hütte Deutscher Alpenverein seit

3 Project area Total area 5,4 ha ( m²) At the outskirts of Lübeck Good infrastructure (School, Shopping, etc.) Low distances to highway and station Characteristics Buildings designed as low energy consuming houses Ecological materials have impact on energy and material flows during buildings life cycle All consumption data of the houses are known because of the installation of meters Infrastructure system is operated by a private company and recharged by fee calculations Here focus only on water and wastewater related issues. 3

4 Project s History Residential area in the city of Luebeck (A tot = 5.4 ha) Project was a winner of a competition in urban development for an ecological housing estate (1995) Integrated infrastructure system was one of the key issues for the decision Private operating infrastructure company (operation of wastewater treatment system and operation of all other medias supplying the houses) Project started in 1999 designed for 117 units Interruption at 30 units in 2000 Operation of the infrastructure systems since 8 years Flintenbreite (design phase I) Ecological Housing estate for approx. 350 inhabitants Integrated inftrastructure system Planned: 45 terraced houses 56 flats 12 twin houses 4 flats in the central building Central building for the technical facilities and a meeting room Private company for the infrastructure system (infranova) 4

5 6 RH, 7 St. 3 RH, 14 St. H1 H2 H3 H4 H5 H6 6 WE, 8 St. PROJEKTTRÄ GER : ABWA SSER- TECHNIK : ARCHITEKTEN : BLATT NR. : MASSSTAB : 5.75 M u ld e 8 4 RH, 5 S t. 6 RH, 7 St. ARCHITEKTEN DIPL.-ING. GO DR. - JULIUS - LEB ER - STRAS LÜBECK TEL / M u ld e RH, 7 S Bauentwicklungs-G Flintenbreite Lübeck En D - Private area Specialities I Own infrastructure system and operation company The system of the integrated infrastructure is part of the development plan No connection of the houses to public systems (water, energy, wastewater etc.) House owners have only contracts with the private company not with public suppliers Own calculation of the operation costs for the inhabitants Wastewater system with the intention of low water consumption and the reuse of nutrients (as fertiliser) Current Situation Infrastructure is mainly finished 26 terraced houses 12 twin houses Central building with 4 flats 116 inhabitants All facilities for the technical operation are finished and in operation since 2000 Ongoing: Construction of 46 terraced houses and 12 flats L1 6 RH, 7 St M M1 M3 L K1 K L6 A A1 A RH, 7 St. K6 J1 J M. 4 RH, 14 St. B RH, 5 St. B1 B9 J5 I C C C1 C5 C6 C10 I1 I4 M D M. M. D 10 RH, 6 St. E F 3.00 G N D8 E1 E5 F1 F4 8 RH, 7 St. 5 RH, 7 St. 4 RH, 7 St. 4 St. 6 WE, 8 St. GESAMT 55 NEUE REIHENHÄUSER, 2 3 INDEX D ATUM ART DER ÄNDERUNG ÄN DERUNGEN 3 RH, 1 4St. M. O infranova OtterWasser Gmb H REIHENHAUSSIE LAGEPLAN 5

6 Flintenbreite Terraced houses Twin houses Community Building Buildings House areas of m² Use of ecological building materials (with certification) Construction of the houses with reduction of the outer suface Low energy houses (energy consumption < 70 kwh/(m²*a)) 6

7 Vacuum toilet Sanitation concept Bathroom, Kitchen Washing machine Stormwater Blackwater Central vacuum station Organic waste Greywater Stormwater Hygienisation Shredder Constructed wetland Swale infiltration Biogasplant Energy and heat from Biogas Creek Groundwater Storage Agriculture Lab scale Pipe System Heat distribution from Heat/Power Unit Drinking Water Supply Electricity and Communication Vacuum Pipe 7

8 Energy conception Central Energy supply system Production of electricity and heat by a combined heat and power unit (CHPU) Operation of the CHPU either with natural gas or biogas Peak heatage production by burners Surplus of electricity is feeded into the public grid Units for Energy Supply 8

9 Verbrauch TW [l/(e*d)] Rainwater Water consumption Wohnsiedlung Flintenbreite Trinkwasserverbrauch 140 bundesweiter Durchschnitt 129 l/e*d Spez. TW Verbrauch gleitendes Mittel (8 Werte) Durchschnitt bundesweit 0 Ablesedatum 9

10 Nutrients Organic matter Design constructed wetland Composition of greywater Influent Effluent Parameter Unit Average Range (min-max) Volume L/(cap d) Average Range (min-max) BOD 5 g/m³ COD g/m³ N g/m³ P tot g/m³ PO 4 -P g/m³

11 Sludge from greywater Greywater contains sludge Solid removal important for biological treatment Colour: upper part: white grey lower part: dark Sludge volume: approx. 42 l/(cap*a) Desludging interval: 5 6 years Vacuum toilet Significantly lower water consumption Effective source separation Only few operational problems and disturbances High acceptance by the residents 11

12 Elements of vacuum system Vacuum toilet Vacuum pipe (Ø mm) Vacuum pipe (Ø mm) Vacuum station Vacuumstation Vacuumstation Mixing tank Biowaste grinder Hygienisation 12

13 Electricity [kwh/pers*d] Volume Blackwater [l/(pers*d] Volume Blackwater Flintenbreite Volume Blackwater 12 Volume Blackwater Average Datum Energy consumption Vacuum 0,70 Energy consumption Vacuum-station 0,60 0,50 0,40 0,30 0,20 0,10 0,00 13

14 Expected results for the biogas plant in Flintenbreite Energy production from blackwater: 45 kwh/(p*a) Energy production overall => 18 MWh/a (45 MWh/a with additon of organic waste) 5-10% of the overall energy consumption can be covered by the biogas plant Volumes and loads of Grey- and Blackwater Blackwater 5 l/(pers*d) Greywater 65 l/(pers*d) COD 60 g/(pers*d) N 8,6 g/(pers*d) COD 37 g/(pers*d) P K 1,2 g/(pers*d) 0,7 g/(pers*d) N 0,8 g/(pers*d) 0,5 g/(pers*d) 0,2 g/(pers*d) P K 14

15 Conclusion Source separation very effective Most of the inhabitants recognize the benefits of the vacuum toilet-system; development of the toilets is wanted Experience may decrease the effort for maintenance Minor technical modifications of the vacuum system have been necessary Operation costs of integrated infrastructure system approx. 20 % lower than for conventional system (Lübeck Flintenbreite) Potentials Saving of drinking water by the use of vacuum-toilets and installations with less water consumption Utilization of the energy of the blackwater with the biogas technology Utilization of the nutrients from the blackwater and biowaste after anaerobic treatment Very low effluent values of the greywater after treatment Very efficient separation of the nutrients 15

16 Kiitos huomiota 16