CHEMOX™: Advanced waste water treatment with the impinging zone reactor

Air Products uses their CHEMOX™ process for advanced oxidation of a variety of waste waters, e.g. landfill leachate. The centrepiece of the CHEMOX™ process is the Impinging Zone Reactor (IZR) developed by the University of Clausthal. In the IZR waste water is intensively mixed with an ozone/oxygen m...

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Bibliographic Details
Published in:Water science and technology 1997, Vol.35 (4), p.347-352
Main Authors: Barratt, Peter A., Baumgarl, Arne, Hannay, Neil, Vetter, Manfred, Xiong, Feng
Format: Article
Language:English
Subjects:
Advanced oxidation
CHEMOX
environmental
impinging zone reactor
landfill leachate
oxygen
ozone
water
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Summary:Air Products uses their CHEMOX™ process for advanced oxidation of a variety of waste waters, e.g. landfill leachate. The centrepiece of the CHEMOX™ process is the Impinging Zone Reactor (IZR) developed by the University of Clausthal. In the IZR waste water is intensively mixed with an ozone/oxygen mixture under atmospheric pressure and ambient temperature. Due to the excellent gas mass transfer performance of the IZR no expensive pressure vessels or gas compressors are required. Pilot plant trials were performed very successfully on a landfill leachate in Germany in 1995. Results from parallel operations with a commercial venturilbubble column system and the CHEMOX™ process show a decrease in hydraulic retention time of 10.3 vs. 3.3 [h], a reduction of the O3/COD ratio of 3.2 vs 1.8 [kg/kg], and an energy consumption (without ozone generation) of 8.0 vs. 4.3 [kWh/kg ozone consumed] (meter reading) respectively. State-of-the-art, process controlled, mobile pilot plants provide the customer with the required information to accurately design and cost an effective ozone waste water treatment process.
ISSN:0273-1223
1996-9732
DOI:10.1016/S0273-1223(97)00044-9