Patent ID: 6127167
Filing Date: 2000-10-03
Classification: C02F,C12N

Abstract:
A method for treating wastewater containing organic waste and aerobes, comprising:supplying oxygen to the wastewater; andadding to the wastewater an oxidation-reduction substance known to oxidize the aerobes and having an oxidation-reduction potential of -150 to +150 mV based on a normal hydrogen electrode, the oxidation-reduction substance being added in an amount wherein a concentration of the oxidation-reduction substance is between 1 and 50 .mu.M whereby, =p1 the aerobes decompose at least a portion of the organic waste and the aerobes proliferate, thereby forming a sludge comprised of aerobes, and wherebyelectrons are transferred from at least a portion of the aerobes to the oxidation-reduction substance thereby decreasing the amount of aerobe proliferation that would otherwise occur in the absence of the oxidation-reduction substance.