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Preliminary Results of the Anaerobic Biotreatability of the Effluent from the Wet‐Air Oxidation of Sewage Sludge
Author(s) -
CUTFORTH S. J
Publication year - 1995
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1995.tb00935.x
Subject(s) - effluent , waste management , sewage , anaerobic exercise , environmental science , wet oxidation , anaerobic digestion , sewage sludge , sewage treatment , sewage sludge treatment , pulp and paper industry , environmental engineering , chemistry , wastewater , engineering , methane , physiology , organic chemistry , biology
Wet air oxidation and other thermal processes can be used on all sludges, whether they are raw, mixed or digested. The process sterilizes the sludge and gives a considerable reduction in volume. However, apart from the high capital costs which are associated with this technique, one of its principal disadvantages is the high strength of the (effluent) liquor. This study investigated the feasibility of treating the liquor using an anaerobic digester, which resulted in a good reduction in BOD and a reasonable reduction in COD. The liquor was still strong, but could be returned to the inlet works of a sewage‐treatment plant without causing significant organic overloading.