The addition of ozone breaks up the complex compounds of the micropollutants, which thereby lose their harmful effect and can be subsequently partially degraded by biological means.
- The chemical oxidation of the micropollutants, and above all, of aromatic compounds. The reactive products from ozonation are removed in a downstream, biological phase preferably by means of deep bed, bioactive filtration.
- Municipal wastewater that does not contain substances representing a problem for ozonation (e.g. bromid)
- In the case of high COD concentrations (selective oxidation)
- Compact process, limited space requirement
- Relatively low operating costs
- Simple operation
- Robust process
- No formation of residuals
- Extensive disinfection of the wastewater
» St. Pourcain-sur-Sioule WWTP, France: newly built treatment plant for municpal and industrial wastewater
including Ozonation & filtration; 15.000 p.e., Start-up: 2013
» Reinach WWTP, Switzerland: New mechanical/biological treatment plant including Ozonation and deep bed filtration;
35,400 m3/d, Start-up: 2016