A chemical company in Noord-Brabant that disposes her wastewater in the sewer, was confronted with stricter discharge requirements, which made wastewater treatment necessary. The company asked Logisticon to create and realize a solution for this problem.

After research and a pilot test on site, Logisticon designed and built a wastewater treatment plant. The treatment plant consists of the following process stages:

• Coagulation, flocculation and pH correction
• Flotation
• Sludge buffer
• Chamber filter press
• Chemical storage and dosing

In mixing tanks, chemicals are dosed for coagulation, flocculation, and neutralization. As a result, insoluble substances adhere to each other and flocs are formed. The flotation unit is used to separate the insoluble compounds from the water. This is done by inserting air into the water at the bottom of the flotation unit. The fine air bubbles formed adhere to the floating substance, sludge particles and flocs, causing them to rise. The substance forms a floating sludge layer at the surface of the flotation unit, which is being removed by a scraper.

This sludge is removed and stored in a buffer. A chamber filter press is fed from the buffer and the sludge is further dewatered. The chamber filter press removes as much water as possible by means of pressure, so that a sludge cake remains and can be disposed of.

The treated wastewater leaves the flotation unit through an overflow chute. The treated water can be discharged directly into the municipal sewer, well within the discharge limits.

The installation has now been commissioned and after some finetuning, the effluent meets the discharge standards set, to the satisfaction of the customer.