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Oxidative Co‐Treatment Using Hydrogen Peroxide with Anaerobic Digestion of Excess Municipal Sludge
Author(s) -
Cacho Rivero Jesus A.,
Madhavan Narain,
Suidan Makram T.,
Ginestet Philippe,
Audic JeanMarc
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143005x101647
Subject(s) - hydrogen peroxide , chemistry , volatile suspended solids , anaerobic digestion , biosolids , anaerobic exercise , suspended solids , activated sludge , oxidative phosphorylation , pulp and paper industry , total dissolved solids , waste management , mixed liquor suspended solids , sewage treatment , environmental chemistry , nuclear chemistry , wastewater , environmental engineering , methane , biochemistry , organic chemistry , environmental science , biology , physiology , engineering
The effect of an oxidative co‐treatment on anaerobic digestion of a mixture of primary and waste activated sludge was investigated. The oxidant used in this study was hydrogen peroxide (H 2 O 2 ). A maximum improvement in solid destruction of 15.2% was achieved in the overall process, with a dosage of 2.0 g H 2 O 2 /g influent volatile suspended solids (VSS influent ). All configurations operated at this dosage also showed statistically significant increases in solids removal. A statistically significant enhancement in overall solids destruction was observed for the lower oxidant dosage (0.5 H 2 O 2 /gVSS influent ). Surprisingly, for 1.0 g H 2 O 2 /gVSS influent , only one of the three configurations involving oxidative co‐treatment showed significant increases in solids destruction. Special attention was paid to the performance of this process relative to fecal coliforms destruction. Class A biosolids were obtained for all the different hydrogen peroxide dosages used when oxidative co‐treatment is combined with a two‐stage anaerobic digestion process.