High rate anaerobic digestion of a petrochemical wastewater using biomass support particles |
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Authors: | Ramakrishna C Desai JD |
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Institution: | (1) Environmental Sciences and Applied Biology Division, Research Centre, Indian Petrochemicals Corporation Limited, Baroda, 391 346 Gujarat, India |
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Abstract: | Anaerobic digestion of wastewater from a dimethyl terephthalate plant was studied in continuously stirred tank reactors with plastic net biomass support particles (BSP) at a level of 20% (v/v). The experimental results showed that the BSP system could treat the wastewater at a hydraulic retention time as low as 1.5 d, organic loading as high as 20 kg COD/m3/d and at acidic feed pH as low as 4.5 with 95% COD reduction and biogas production of about 8l/l/d, while the control system without support particles could not treat the wastewater above a 5-d hydraulic retention time, 5 kg COD/m3/d organic loading and a feed pH of 6.0. Thus, augmentation of BSP upgraded the performance of the conventional suspended growth system to an equivalent level to advanced reactors. |
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Keywords: | Anaerobic digestion anaerobic process intensification biomass support particles DMT wastewater petrochemical wastewater |
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