WWTP Bayer AG, Germany

The Project

The Microflotation units with patented AQUATECTOR® Microfloat® technology were put into operation in the year 1997 at Bayer AG, Uerdingen.They serve the purpose of tertiary and reduction of TSS, COD and turbidity. Here, microflotation replaces sand filtration.

The Mikroflotation treats the waste-water that has already been completely biologically purified immediately after the final clarification.

In the design with two parallel operated circular cells of a diameter of 10 m respectively, a non-contacting flotate removal and the pressure re-saturation system AQUATECTOR®, the Microflotation technology installed here is a game-changer in the purification technology.

The enviplan® microflotation serves as supplementary processing stage for the wide-ranging separation of TSS of the completely biologically purified waste-water of Bayer AG. Beside the further reduction of the cumulative parameter COD, the duty of Microflotation is to secure the monitoring values for unfavourable conditions of the purification plant at the outlet.

The energy requirement of the entire plant lies at < 7,5 Wh per m³ of treated waste-water. About nine million cubic meter of water can be subsequently processed with the new system yearly. Dr. Kuhn, head of factory, responsible for environmental protection: “The einviplan® Microflotation ensures that the COD discharge decreases further. In it, we are seeing a further contribution in the sense of the Responsible Care”.

Client: Bayer AG Leverkusen

Input Microflotation: 1200 m³/h

• Input TSS >1000mg/l
• Discharge <10mg/l
• Energy requirement: <7,5 Wh per m³ Wastewater