Allenwiller

Allenwiller : a 1700 m², vertical flow reed bed (French system) plus a 960 m² second stage unsaturated vertical flow reed bed filter, treating 495 m3/d of domestic effluent from three villages (1100 PE) in Alsace.

Additional Info

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

 

Needs

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.

 

Solution

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.

 

Benefits

This solution allows for a high quality treatment of water, in compliance with European legislation

Additional Info

  • Hydraulic load: m³/day
  • Organic load (PE): PE
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