urban drainage systems The KREIS Project Jo rg Londong, Tobias - - PowerPoint PPT Presentation

IWA Athens 14.-16.9 .9.2 .2016 16 1 bauhaus-institute for infrastructure solutions (b.is)

Combining the production of renewable energy with innovative urban drainage systems – The KREIS Project

Jỏrg Londong, Tobias Wätzel Bauhaus-Universität Weimar, Germany Thomas Giese HAMBURG WASSER, Germany

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Contents

Concept for future urban material flows The Urban Quarter Jenfelder Au Grey- and blackwater specific loads Treatment concept and results Conclusions

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Concept for future urban material flows

Rost G., Maier K., Bỏhm M., Londong J. (2015). Auswirkungen eines technischen Paradigmenwechsels auf die wasserwirtschaftliche Organisation in strukturschwachen ländlichen Räumen, Raumforschung und Raumordnung, Volume 73, Number 5, Springer, ISSN 0034-0111, pp.343-356

food groundwater recharge drinking water industry recycling electricity & heat process water energy production soil

Potassium Phosphorus Nitrogen Carbon

K C P N

treatment energy grey water black water & solid organic waste yellow water, urine quality & quantity

• f waters is good

Concept for future urban material flows

New Alternative Sanitation Systems (NASS)

precipitation agiculture

settlement

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Blackwater 2-Material-Flow-System

Minimum Water Quality Standard1) Utilisation Place/ Source Material Flow and Transport Treatment

• ptions

Reuse Product

1) higher water quality possible for usage

2) makes sense only for kitchen wastewater

• - - - optional

C-elimination hygienisation recovery of nutrients phase separation

• red. micro-pollutants.

stabilisation

• rg. plant nutrients

biogas treated wastewater toilet urinal service water blackwater

pipe, vehicle

kitchen drinking water washing machine bathroom treated rainwater white /drinking water sludge service water white water treated wastewater Low loaded greywater

pipe

greywater

pipe

C-elimination hygienisation P-elimination2) phase separation stabilisation rainwater phase separation storage rainwater rainwater

pipe

treated rainwater min.-org. plant nutrient vegetable biomass bio waste vegetable biomass

pipe

Source: [DWA, 2008]

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This realisation of the HWC is the largest demonstration of a resource

• riented sanitation concept working with vacuum technology for the

collection of concentrated blackwater in Europe.

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• Revitalisation of a former

military site

• 45 ha total area, 35 ha

reconstructed

• Realisation: 2012 - 2018
• More than 600 accommodation

units about 2.500 inhabitants

• High energy standards
• Commerce and green areas

The Urban Quarter Jenfelder Au

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Blackwater network - reliability & maintainability

Meshing points Pipe junctions between the subnetworks Central vacuum station Line 1a und 1b Line 2 Line 3

Augustin, K., Skambraks A.K., Li Z., Giese T., Rakelmann, U., Meinzinger F., Schonlau H., Günner, C. (2014). Towards sustainable sanitation – The HAMBURG WATER cycle in the settlement Jenfelder Au, Water Science Technology: Water Supply, 14(1), pp. 13-21. Rohde, R. (2015) Untersuchungen zur Feststoffbildung in Unterdrucksystemen für den Schwarzwassertransport, Dissertation, Schriftenreihe des b.is, Band 31, Rhombos Verlag

The vacuum drainage

• f blackwater was

thoroughly examined. Advice on construction and operation of the system was handed out by the KREIS-researcher team, as a system failure would cause a considerable acceptance loss.

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• Sampling procedure and compilation of daily flow proportional samples

Sievers, J.; Londong, J.; Albold, A.; Oldenburg, M. (2014). Characterisation of Greywater – Estimation of Design Values In J. Lohaus, ed. Proceedings of 17th International EWA Symposium “WatEnergyResources – Water, Energy and Resources“ Hennef, European Water Association

• Parameter

n Unit Mean STD Median Range Volume Q 17 L/(c*d) 77 16 76 62 -114

• rg. Matter TSS

16 g/(c*d) 9 3.1 8 6 - 16 VSS 16 g/(c*d) 7 2.9 6 5 - 14 BOD5 15 g/(c*d) 35 11 32 19 - 54 COD 17 g/(c*d) 66 21 59 46 - 105 Nutrients TP 17 g/(c*d) 0.4 0.2 0.3 0.2 - 0.8 PO4-P 17 g/(c*d) 0.1 0.1 0.1 0.1 - 0.3 TN 17 g/(c*d) 1.3 0.3 1.1 0.8 - 2.1 NH4-N 17 g/(c*d) 0.2 0.1 0.2 0.1 - 0.4

Average loads of greywater sampling campaign Berlin “Block 6”

Greywater Sampling 50% of organic load of wastewater in greywater 10% of nutrient load of wastewater in greywater

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Parameter n Unit Mean SD 85%- Percentile

• rg. matter acetic acid

10 mg/l 429.6 244.8 690 propionic acid 10 mg/l 168.9 123.5 295.4 DOC 11 mg/l 1027 314 1420 DIC 11 mg/l 918 94 1332 TOC 7 mg/l 2510 1100 3645 nutrients TP dissolved 7 mg/l 74.1 7.6 82.2 TN dissolved 7 mg/l 1412 108 1486 Average concentrations of blackwater in Lübeck “Flintenbreite”

Wätzel, T.; Sebỏck, S.; Kraft, E. (2013): Anaerobic digestion of separated blackwater - An innovative wastewater treatment step with the option for a specified degradation of pharmaceuticals. Conference Proceeding of the 2013 International Environmental Engineering Conference and Annual Meeting of the Korean Society of Environmental Engineers (IEEC2013)

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Blackwater Digestion

• 8 CST- reactors,
• 4 UASB- reactors,
• Volume 40 L each
• Online-measurement
• f gas quantity and

quality (CH4, CO2, O2, H2, H2S)

• Continuous feeding

~2kgCOD/m³

570 NL/g oDM added 780 NL/g oDM added

The CSTR operated in stable conditions with volumetric loadings of up to 5 kg COD/m3 reactor volume*d. For the UASB it was possible to increase the volumetric loading to 12 kg COD/m3 reactor volume*d.

13 13 IWA Athens 14.-16.9 .9.2 .2016 16 Wätzel, T.; Kraft, E. (2014): Specified, anaerobic degradation of pharmaceuticals and digester gas recovery: A comprehensive study. In: 17th International EWA Symposium "WATEnergyResources - Water, Energy and Resources: Innovative Options and Sustainable Solutions", during IFAT 5-9 May 2014, Munich.

pharmaceutical products in blackwater and degradation

Diclofenac Ibuprofen Metformin Metoprolol Amoxicillin Carba- mazepine mean [µg/l] 11.6 290.2 1082.4 42.1 596.5 119.3 s tandard deviation [µg/l] 13.3 111.3 934.8 10.6 451.1 32.2 median [µg/l] 3.35 305 835 41 460 120

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Blackwater Digestate of CSTR strainer heat exchange compensation tank injector mixing pump

conditioning of digestate sewer

CSTR

Actually constructed part of the treatment

Greywater

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recirculation sedimentation trickling filter storage Greywater storage with solids separation greywater Deammoni- fication store & mix

digestate post treatment

solids to hydrolysis

greywater treatment

Blackwater

treatment of digestate

Digestate of CSTR UASB strainer storage store & mix store & mix hydrolysis- reactors bio-waste sievings Screw extruder press biogas P-sludge P-precipitation electro-coagulation, P-precipitation Ozone to composting heat exchange

post treatment

compensation tank injector mixing pump

conditioning of digestate

to creek

Urban creek sewer blackwater treatment

to gas storage filtration CSTR

Blackwater and greywater treatment concept at Jenfelder Au

In order to generate usable products, the digestate must be separated into a low-solids phase and a muddy, solids and phosphate-rich phase. To avoid transportation costs and annoyance of residents, the liquid phase should be treated and recycled locally. The digestate treatment together with the greywater after prior removal of nitrogen (deammonification) and phosphorus (precipitation) will be investigated in further research projects.

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• rganisational and institutional aspects

The KREIS project has determined the necessary coordination needs that are to be expected during the realization and

• peration on the quarter level.

Early cooperation management is necessary. The acceptance of the system and of its compounds will be evaluated during the operation phase starting in 2017, based on methodologies developed in the KREIS-project.

Schramm, E.; Giese, T.: Kerber H. (2015). Kooperationsmanagement zur verbesserten Umsetzung von neuartigen Sanitärsystemen auf Quartiersebene. Energie Wasser/Praxis, 04/2015.

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Extracting recyclable materials and elimination of pollutants in source separated municipal wastewater of an urban quarter will be demonstrated in Hamburg Jenfelder Au. In the preparatory research project KREIS, knowledge about volumetric quantity, concentrations and specific loads of grey- and blackwater was generated. On the basis of these data and lab-scale experiments, valuable information for the large-scale implementation of the HWC could be gained. Methods for cost analysis and investigations of acceptance were adapted to the project boundaries. Conclusions

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Düsseldorf, Germany

This fairy tale will never come true… but we can work on it !