Modernization of WWTP for chemical company

Project’s context & challenges

It is one of the largest and most modern chemical companies in Poland. The company maintains a strong position in both domestic and international markets, thanks to its production of high-quality products such as mineral fertilizers, plastics, liquefied gases, and more.

Ongoing development and facility expansion exceeded the capacity of the existing wastewater treatment plant, which could no longer treat sewage to the required standards. To address this, the company implemented a customized solution that meets increasingly stringent wastewater treatment standards while allowing for greater sewage intake—without the need for additional tank construction. Throughout the project, the company ensured uninterrupted purification processes.

This investment modernized the plant’s wastewater treatment technologies, significantly improving overall efficiency. It also enhanced the removal of biogenic compounds by optimizing nutrient delivery. Additionally, the company developed a response strategy for handling excess nitrogen and organic compound discharges from production facilities.

13,500 m³/day

Capacity:

up to 90%

COD removal:

up to 95%

Nitrogen removal:

100 double-layer

Membrane modules:

Customer benefits

Compliance with stringent discharge limits

Water reuse for internal applications

Reduced operational costs through optimized chemical and nutrient dosing

Enhanced process stability and flexibility

Achieving optimal parameters of treated effluent with maximum hydraulic load of the plant

Solution

The solution involved retrofitting the existing SBR tanks with a continuous membrane bioreactor (MBR) system. Advanced aeration zones with recirculation were implemented to handle variable nitrogen and COD loads. Operators can dynamically adjust nitrification and denitrification zones, ensuring stable and efficient treatment performance.