Municipal wastewater treatment plants

WITKOWITZ ENVI designs, manufactures and supplies wastewater treatment plants for municipalities and towns.

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The cleaning process involved in our waste water treatment plants is based on the mechanical pre-cleaning and the biological treatment using a long-term activation and aerobic stabilization of the sludge. We achieve a high efficiency of removal of organic matters with a significant reduction of nitrogen compounds by a combination of nitrification and denitrification.

Technology of municipal wastewater treatment plants

Design, production, delivery of WWTP

Municipal wastewater treatment plants are intended for municipalities and towns with a population of 1 to 100 thousand inhabitants. Witkowitz ENVI urban waste water treatment plants are based on the principle of biological waste water treatment. By intensifying natural biological processes, urban sewage is cleaned to the level required by current legislation.

Biological cleaning

Wastewater treatment is carried out by means of low-load activation, which ensures that the very strict parameters defined for clean water are achieved, while ensuring the stability of the process itself. Already in the design of wastewater treatment plants we take into account the energy requirements for cleaning and other operational costs in order to best optimize the form of wastewater treatment plants to meet the needs of a specific operator or location.


We deliver complete technological solutions for the waste water treatment. Based on the customer requirements, we can add a technology of removing phosphorus or other elements or compounds in the cleaning process.

Design activities

  • our own team of experienced design engineers
  • proposals of technological units (WTP, BGS, SLMF)
  • manufacturing documentation of new tanks and steel structures
  • preparation of technical-economical studies within the investment construction
  • proposals of technical unit reconstructions
  • implementations around he world

Assembly works

  • own assembly and production capacities
  • know-how for the assembly / disassembly of all the technological units
  • many years of experience
  • references and implementations around he world

Tank inspection and reconstruction

  • assessment of the current technical conditions of tanks
  • information on the expected lifetime of tanks
  • assessment of the options and proposals of the further utilization of tanks
  • recommendation of suitability of tanks for storage of the specific media
  • complete reconstruction

Our reference examples

We provide municipal wastewater treatment plants on continents all over the world.

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