Water treatment - Import export

Waste water treatment plants and surface waters have enormous energy potential. A sewage treatment plant, for example with 90 million litres of wastewater daily, reducing the wastewater temperature by using heat exchanger by around 1°C, generates a power of about 4.3 MW. The comparative potential for energy recovery from the surface water is even higher. Environmental aspect Induced by humans, water temperatures of the surface and streams have steadily increased, not least owing to the inflows from sewage water treatment. This has serious consequences on the flora and fauna. If heat is extracted from purified water in the sewage treatment plant or from surface waters and from streams, and water temperature is thereby reduced, this will have a positive effect on the entire ecological system. With KASAG heat exchanger systems, on the one hand, the energy requirement of the sewage treatment plant can be covered and, on the other, buildings in near vicinity can be heated or cooled.

Installation of static IMV mixing elements in a pipe DN 1400 mm for dispersing of a 10% w/w ozone/oxygen-gas stream into fine bubbles. This results in a large interfacial gas/liquid contact area and thus a high ozone absorption rate of the ozone in the water stream to be treated is achieved. The ozone/oxygen-gas stream is added through the side-nozzle DN 200 mm. Mixer is made of stainless steel AISI 316L (= 1.4404), pickled and passivated. This static mixer IMV DN 1400 mm is installed in a water treatment plant in France, for pre-ozonation of 1500-8000 m3/h water with 1g/m3 ozone. Pre-ozonation Static Mixer D1400mm forTreatment of 1500-8000 m3/h Water.Outlet-side of the Ozonation Mixer IMV DN.