Biological wastewater treatment plant

Condorchem Envitech has accumulated vast experience in the design, manufacture, assembly and setting up of different types of biological wastewater treatment plants. The most appropriate one is selected according to the characteristics of the effluent.

We have biological reactors, such as MBR type membranes, moving-bed MBBR and sequential SBR to choose the best option for every biological wastewater treatment plant.

  • Active sludge reactor: A continuous aerobic biological process with the biomass in suspension. Efficient and viable is there is space.
  • Sequential biological reactor (SBR): A discontinuous, aerobic biological process. Very versatile and flexible.
  • Membrane biological reactor (MBR): An aerobic biological process. It requires little space and produces a high-quality secondary effluent.
  • Mobile bed biological reactor (MBBR): An aerobic biological process with fixed biomass. Great efficiency.
  • BIOCARBĀ®: An aerobic biological process with fixed biomass. Very efficient and complete treatment. An excellent option in many cases.
  • UASB Reactor: An anaerobic process, ideal for effluents with high organic loads. Very low operating costs.
  • RAFACĀ® Reactor: An anaerobic process, optimised to treat high organic loads, A very competitive process.

When effluents have a high concentration of dissolved organic matter, the most competitive option is biological treatment, due to its simplicity and low costs. The only requirements for satisfactorily applying this technology is that the pollution be biodegradable and that there no biocidal compound be present in the effluent to be treated.

Soluble organic matter is assimilated by microorganisms as a source of carbon which grow and form macroscopic floccules that they decant. For the growth of microorganisms, it is necessary to have, apart from organic matter, the presence of nitrogen and phosphorus in the effluent. If their concentration is not sufficient, they must be provided for the treatment.

Microorganisms may assimilate organic matter by consuming oxygen, or in the complete absence of the latter. Having said that, their metabolism (speed of degradation, products formed, etc.), depends entirely on whether the growth occurs in aerobic or anaerobic conditions.

The selection of the type of biological process must be analysed case-by-case according to the characteristics of the effluent to be treated.