IFAT 2022: Innovative waste water treatment - Using ozone to combat micropollutants
More and more micropollutants are entering our watercourses through industrial plants or agricultural applications. Added to this is the use of medicines and cosmetics in private homes, which leave residue in water.
These substances do not biodegrade well and are virtually impossible to remove using conventional clarification plant technology.
Ozone is increasingly being used to eliminate as many pollutants as possible from waste water. Ozone is the strongest oxidising agent for use in water treatment. It reliably eliminates impurities and isn’t just highly effective, but also environmentally-friendly and conserves resources.
Ozone breaks down trace substances through oxidation or converts them into smaller molecules. They are then easier for micro-organisms to break down in a post-treatment stage or can be removed by means of absorption. This combination of processes delivers an improved overall cleaning result and generally removes more than 80 percent of trace elements from waste water. At the same time, operating costs are lower than those of comparable technologies.
The positive side effects of using ozone are a reduction in germ levels in waste water, discolouration and a further reduction in COD. COD is a measure of chemical oxygen demand and indicates the water’s level of organic contamination. The lower the COD contamination, the cleaner the water. The contact time and specific metering are key to technical implementation. Ozone is generated on-site in an ozone generator.
Ozone generation with low operating costs
Making ozone generation as cost-effective as possible is not an easy thing to do because ozone quantities vary greatly due to the huge fluctuations in waste water quantities and the composition of trace elements. ProMinent’s new ozone system DULCOZON OZLa provides excellent reliability and can be fitted with up to 16 ozone generator modules. The modules can be activated and deactivated as required. The amount of ozone produced can therefore be adapted to fluctuations, for example in a clarification plant where varying volumes of waste water are treated.
Watch a video of the new ozone system from ProMinent:
Experience the new ozone system for yourself on our Stand 451/550 in Hall A3 at IFAT, which runs between 30 May and 3 June 2022 in Munich, Germany.
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