Decentralized treatment of stormwater runoff with the HydroSystem

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Decentralized treatment of stormwater runoff with
the HydroSystem
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Impact on Waterbodies
Photographs Surholt und Keckevoet
(2001) Dierkes (2005)
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Heavy metals in waterways
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Target values

• Underground infiltration
• German Soil Restoration Law
• German Working Group on water issues of the
  Federal States and the Federal Government
• Discharge into Receiving Water
• German Working Group on water issues of the
  Federal States and the Federal Government
• Rainwater Harvesting
• Drinking Water Ordinance
• Requirements for process water

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Definition of target values
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Working Principle
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Installation example
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Installation example
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Installation example
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Research projects
Academy of Fine Arts, Munich, Copper roof,
Technical University of Munich, Prof.
Wilderer Old peopless home, Wahlscheid, Zink
roof, University of applied Sciences Bochum,
Prof. Nolting Mittlerer Ring Munich, Motorway,
Technical University Munich, Dr. Helmreich Aasee
Project Muenster, Separate System, University of
Münster, Prof. Coldewey Comparison with treatment
pond, Wuppertal, separate drainage system, Dr.
Pecher AG Bremer Straße, Hamburg
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Monitoring
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Removal of Zinc
2,5
Zulauf
2,0
Ablauf
1,5
Konzentration Zn (mg/l)
1,0
Zielwert
0,5
0,0
10.10.2006
07.02.2007
07.06.2007
05.10.2007
02.02.2008
01.06.2008
29.09.2008
Datum
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Comparison of 3 filters
3000
2500
g/L)
2000
m
1500
Concentration (
1000
500
0
Concrete
Zeolithe 1
Zeolithe 2
Athanasiadis et al. 2006
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Water Quality
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Construction
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Maintenance
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Results
HC
NH4
PO4
Pb
Cu
Zn
TSS
Datum
2.17
0.83
0.88
0.113
0.279
0.676
425
Runoff (mg/L)
0.20
0.07
0.17
0.021
0.046
0.094
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Outflow (mg/L)
0.20
0.10
0.20
0.025
0.050
0.500
50
Aim (mg/L)
91
91
81
82
84
86
94
Eff. 3P filter ()
85
93
81
96
94
94
91
Eff. new filter ()
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Retrofitting
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Installation examples