Municipal Wastewater
Biological waste water treatment does not allow for the inactivation of pathogen bacteria, viruses, parasites as well as the removal of micro-pollutants 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.
Where waste water can find its way into bathing water or drinking water, or is re-used (for example in agriculture), a further treatment of waste water is absolutely necessary. Even the subtle accumulation of micro-pollutants in our water circulation such as pharmaceutical residue, hormones or pesticides can only be prevented by suited techniques.
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 by-products or considerable residue being created. Ozone is successfully used in waste water 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 waste water 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 settlements.
Matching WEDECO UV systems
- UV disinfection for liquids with low UV tranmittance
- 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
- Customized ozone system for large capacities ozone
- Ozone production from 14 kg/h to more than 300 kg/h per unit
- Compact „plug & play“ ozone system for middle-sized ozone capacities
- Ozone production from 200 g/h to 25,000 g/h per unit
Engineered Solutions
Xylem’s pre-engineered AOP concept WEDECO MiPRO™ is based on three key components: Ozone, Hydrogen Peroxide and UV light. By combining these technologies, flexible solutions for individual requirements are given.
The experience of many years building containerized systems enabled Xylem to engineer optimized WEDECO systems with the best possible arrangement to meet the customers needs.
Xylem Expertise
The elimination of micro-pollutants from our water is a challenge which more and more responsible providers and disposers have to set themselves. While biological treatment processes do not remove them completely, oxidation with ozone is proving to be one of the most efficient methods.
Four outstanding product brands - Flygt, Sanitaire, Wedeco and Leopold - embody the passion and expertise of Xylem Water Solutions. Together these product brands are an unbeatable force offering you pumping, mixing, aeration, disinfection, oxidation, clarification and filtration functions.
