Biological treatment modular plant is a piece of equipment for wastewater treatment consisting  of separate modules arranged in a single building or freestanding units that include two basic elements - biological reactor responsible for biodegradation of organic wastewater contaminants, and the membrane module for physical separating of activated sludge from purified water.

Biological treatment modular plants are used:

  • in case of impurities resistant to oxidation in wastewater;
  • to meet high standards of purified water;
  • in the absence of free space.


Biological treatment modular plants advantages:

  • replacing the aeration tanks, secondary clarifiers and sand filters;
  • small size - the concentration of activated sludge in biological treatment modular plants is several times higher than in conventional buildings, which results in smaller buildings size;
  • purification efficiency of substances resistant to oxidation in biological treatment modular plants is significantly higher than in aeration clarifier system, as the microorganisms having ability to oxidize bioresistant substances are not washed out of the reactor through the membrane;
  • the possibility of year-round nitrification, even in cold climates;
  • reliable operation – plants productivity does not depend on the sedimentation properties of the sludge (sludge index);
  • easy to use - the process is fully automated;
  • physical disinfection of wastewater - membrane pores are smaller than bacteria.


Parameters and dimensions of treatment modular plants depend on:

  • the volume (10 to 1000 m3/day);
  • parameters of incoming wastewater;
  • purification requirements.


Biological treatment modular plants provide wastewater treatment up to municipal sewer discharge system standards or surface waters discharge standards.