Improving a wastewater treatment plant with MBBR technology
Problem / Need :
A community of communes was confronted with a major challenge. Their wastewater treatment plant, mainly based on reed filters, was overcapacity. Designed for 400 inhabitants, it treated water for 600. This overload resulted in an urgent need to improve wastewater treatment.
Method used / Answer provided :
A biological treatment system of the MBBR (Moving Bed Biofilm Reactor) type was installed, using treatment systems adapted to specific needs.
The system, which only measures 3 m by 2.3 m, is composed of :
- a pumping system
a succession of biological cuves
an internal recirculation system
For this project, two lamella clarifiers were installed, with an access walkway to facilitate maintenance. The chosen model is the DLM-S monobloc, selected for its efficiency in confined spaces and its ability to integrate harmoniously into the existing infrastructure of the treatment plant, while complying with environmental and technical standards.
Results
The installation of the MBBR system has had a significant impact on water treatment. It has improved the nitrification process, lightening the load on the second stage of reed treatment. The results observed include :
- A 13% reduction in Chemical Oxygen Demand (COD), an indicator of a reduction in organic pollutants.
- A 44% reduction in total Kjeldahl nitrogen (TKN), reflected improvements in the management of nitrogen compounds.
- A 63% reduction in ammonium (NH4) and total phosphorus (Pt), to improve treated water quality in terms of these specific nutrients.
To carry out this project, 1h2o3 created :
- a solution design
- Design of MBBR biological treatment
- Manufacture and integration of electromechanical equipments
- Delivery on site.
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Outdoor MBBR 5NE-M.NE-S
Biological treatment
Year of production
2022
