Technical comments on 'Oxic-settling-anoxic (OSA) process combined with 3,3,4,5-tetrachlorosalicylanilide (TCS) to reduce excess sludge production in the activated sludge system' 10.1016/j.bej.2010.01.001

摘要

Ye and Li [1 ] in a recent article discussed the combined application of oxic-settling-anoxic (OSA) system and a chemical uncoupler, 3,3',4',5-tetrachlorosalicylanilide (TCS) to reduce the excess sludge production as compared to a control system representing the conventional activated sludge process (ASP) [1]. The application of uncoupler to wastewater treatment, especially ASPs, is known for over 15 years and a number of chemicals have been tested for their efficacy in biomass yield reduction. This is an attractive option as significant sludge volume reduction is observed for a low dosage of these chemicals. In the current study, chemical uncoupling was coupled with oxic-settling-anoxic system to enhance the "metabolic uncoupling" of excess sludge.