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  • Title: Oxidative and thermo-oxidative co-treatment with anaerobic digestion of excess municipal sludge.
    Author: Cacho Rivero JA, Madhavan N, Suidan MT, Ginestet P, Audic JM.
    Journal: Water Sci Technol; 2005; 52(1-2):237-44. PubMed ID: 16180434.
    Abstract:
    The effect of oxidative and thermo-oxidative co-treatment of excess municipal sludge was investigated. A mixture of primary and waste activated sludge was anaerobically treated using two different configurations: i) two stages and ii) a single stage with recycling. Oxidative or thermo-oxidative co-treatment placed in between the reactor or in the recycle line was studied. A two-stage configuration with no co-treatment served as a control and resulted in 50.1% overall solids removal. Compared to the control, an increase in solids removal of 10.8 and 2.7% was observed when oxidative co-treatment was placed between reactors and in the recycle line respectively. When thermo-oxidative co-treatment was placed between the two stages or in the recycle line an increase in solids removal of 25.1 and 26.9% respectively was observed. The performances of the different configurations were also evaluated with parameters such as COD, TKN, ammonia, and fecal coliform concentration.
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