Municipal Wastewater
Biological wastewater treatment does not allow for the inactivation of pathogen bacteria, viruses, parasites nor the removal of micropollutants which is necessary for a comprehensive health and environmental protection, even if combined with final clarification and filtration. The WEDECO UV and ozone technologies are suitable methods for this advanced treatment – sustainable and absolutely reliable.
In applications where wastewater can find its way into bathing water or drinking water, or is reused (for example in agriculture), more advanced treatment of wastewater is absolutely necessary. Even the subtle accumulation of micropollutants in our water circulation such as pharmaceutical residue, hormones or pesticides can only be prevented by certain treatment technologies.
Natural disinfection without chemicals
Irradiation with UV light is a tried-and-tested, recognised and environmentally friendly method for disinfecting waste water. Microorganisms are inactivated by a photochemical reaction between UV-C radiation and the genetic information carrier (DNA) of the pathogen within seconds. Unlike chemical disinfection however, the UV irradiation creates no harmful by-products.
The disinfection with UV light has two important advantages compared to chemical methods: On the one hand, a more effective disinfection (particularly against viruses) and on the other hand, a much lower space requirement thanks to substantially shorter contact and retention times.
Ozone for special tasks
Ozone oxidation proves to be a genuine problem solver even in the case of “tough pollutants”. Harmful substances, colours, odours and microorganisms are destroyed directly by oxidation, without harmful chlorinated by-products or considerable residue being created. Ozone is successfully used in wastewater treatment for the removal of tensides, phenols, cyanides, AOXs and discolorations. Ozone is also an efficient technique for the destruction of COD (chemical oxygen demand) and endocrine substances. Moreover, many synergies result in the area of wastewater treatment such as the disinfection of viruses and bacteria, sewage sludge disintegration or the treatment of unwanted odours, for example in the case of wastewater treatment plant locations near residential areas.
Matching WEDECO UV systems
- UV disinfection for liquids with low UV transmittance
- Flow-rate up to 1.335 m³/h
- UV system for municipal waste water disinfection
- Flow-rate several 10.000 m³/h (unlimited)
Matching WEDECO Ozone systems
- Compact „plug & play“ ozone system for medium-sized ozone capacities
- Ozone production from 200 g/h to 20,000 g/h per unit
- Customized system for large ozone capacities
- Ozone production from 15.3 kg/h to more than 200 kg/h per unit
ITT Expertise
The elimination of micropollutants from our water is a challenge which more and more facilities are having to address. While conventional treatment processes do not remove them completely, oxidation with ozone is proving to be one of the most efficient methods of treatment.
Traces of organic contaminants, pesticides, biocides or pharmaceuticals are frequently to be found in drinking and wastewater. Ozone oxidation and Advanced Oxidation Processes are well-suited to eliminating these pollutants.
The many years of experience building containerized systems enabled ITT Water & Wastewater to engineer optimized systems with the best possible arrangement to meet the customers needs.
Four outstanding product brands - Flygt, Sanitaire, Wedeco and Leopold - embody the passion and expertise of ITT Water & Wastewater. Together these product brands are an unbeatable force offering you pumping, mixing, aeration, disinfection, oxidation, clarification and filtration functions.
