In operation since: 2005
Type of wastewater treated: Domestic
Hydraulic load: 495 m3/d
Organic load (PE): 1100 PE
Organic design load (kg BOD/day): 60
Location: Allenwiller, Bas Rhin, FRANCE
Client: Communauté de Communes de la SOMMERAU (Bas-Rhin)
Stage 1 type: Vertical flow reed bed system (French system)
Stage 1 surface area (m²): 1700
Stage 2 type: Vertical flow, unsaturated
Stage 2 surface area (m²): 960 m²
Cost: 450,000.00 €
Designed by SINBIO
The project was to create one waste water treatment plant for 3 villages in Alsace of a total of 1100 PE. The environment was very sensitive about ammonium and stormwater discharge.
Two stage reed bed filters, fed by pumping (land is flat, ruling out gravity feeding). There is no primary treatment; the raw, only coarse screened sewage is fed directly on the first stage beds. A stromwater storage tank has been created upstream of the reed bed filter to minimize stormwater impact on the environment.
This solution allows for a high quality treatment of water, in compliance with European legislation