Method and arrangement for decomposing organic waste water pollutants
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United States of America Patent
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Aug 24, 1999
Grant Date -
N/A
app pub date -
Oct 3, 1997
filing date -
Oct 4, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Highly concentrated waste water is subjected to a partially aerobic method in the reaction chamber of a vertical reactor (1). Aeration of the waste water is performed by regulating the redox potential. To this end, means (14) for measuring the pH value, on the one hand, and means (15) for measuring the redox potential value of the treated waste water, on the other hand, are arranged in a bypass line. The process computer acts via a regulator (31) on a regulating member (19) which regulates the supplied amount of air, and regulates the redox potential value according to the measured pH values in accordance with a predetermined relationship stored in a memory device (33). By means of regulating the redox potential by guiding the pH value, an essentially constant high rate of decomposition of 90% COD is achieved.
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