STUDIES ON THE DESIGN, EVALUATION, AND ENERGY CONSERVATION POTENTIAL OF A PILOT-SCALE HYBRID UASB TREATING A COMBINATION OF WASTE ACTIVATED SLUDGE AND DISTILLERY SPENT WASH

Autor: Dhurjati Prasad Chakrabarti, Indrani Ramdhanie
Rok vydání: 2014
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Zdroj: Chemical Engineering Communications. 201:804-833
ISSN: 1563-5201
0098-6445
DOI: 10.1080/00986445.2013.791812
Popis: The study investigates the effectiveness and energy conservation potential of a high rate hybrid up-flow anaerobic sludge blanket (UASB) reactor treating a combination of domestic waste activated sludge and distillery's spent wash. Analysis of the results revealed good organic removal efficiency at a hydraulic retention time of 5 days. However, the economic feasibility was not studied. This corresponded to an average percentage COD removal of 65%, an average percentage BOD removal of 40.41%, and an average total suspended solids removal of 87%. Biogas volumes were measured using a water displacement technique, and a steady biogas production rate of 2 L/day was attained after 71 days of substrate and nutrient addition. Two well-known mathematical models were used to estimate biogas volume. Hill's model was found to be in better agreement with experimental results; it is within ±10%. Based on the results obtained, the construction of a hybrid anaerobic sludge blanket reactor at a water treatment facility fo...
Databáze: OpenAIRE
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