Bioconservacion SA

Odour control in sewage treatment plants - Case Study


Courtesy of Bioconservacion SA

Controlling the emission of unpleasant smells in sewage treatment plants is a priority objective for plant managers in ensuring the welfare of their workers and minimising the impact of such facilities on the surrounding area.

Bioconservacion has the solution for dealing with the emission of the gases that cause unpleasant smells, ensuring compliance with environmental regulations and improving the quality of life for workers and local residents.

In this article we will describe a successful, real-life experience in Poland, specifically in the Poznań sewage treatment plant, where BIOCONSERVACION installed air filtration systems.

Project context

At the end of 2014, the Poznan waste water treatment plant in Poland completed a modernisation project designed to renovate and expand the existing plant to be able to treat an average flow of 250,000 m3 a day, in keeping with local and European regulations.

Thanks to this project, by 2020 the plant is expected to be able to treat up to 99.6% of the area’s sewage, thus reducing the amount that flows into the River Warta by 33,000 m3 a day.

This modernisation will also allow the reuse of almost 100% of the slurry by using it as a covering for rubbish dumps and/or as a raw material in biofuel production.

The project also envisages investing in systems for the reduction of odours, to significantly improve the living conditions in the plant’s surroundings and to restore the attraction of the area.

Odour control 

The total air flow is 48,000 m3/h. 
Following an initial treatment with a Biotrickling phase, the air flow is divided into four 12,000 m3/h sub-lines.
The air flow of each of these sub-lines is directed through a twin-layer adsorption filter, in which each layer purifies 6,000 m3/h.
The filtration media recommended by Bioconservacion in this project are:

  • A specific mixture of Bi-On Carb OX and Bi-On KOH to eliminate H2S and mercaptans
  • Bi-On ACPA to eliminate NH3
  • Bi-On Active Max to eliminate VOCs

Plan of the odour treatment installation:

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