The possibility of 3-chlorobenzoate removal from water using an upflow anaerobic sludge blanket (UASB) reactor without the addition of any extra dechlorinating culture under light conditions has been studied on a laboratory scale. Benzoate removal was observed in the first three months of operation under light conditions, but the 3-chlorobenzoate removal was not observed. After three months of operation under light conditions, the 3-chlorobenzoate concentration in the UASB reactor effluent gradually decreased to less than 1 mg·L−1. The 3-chlorobenzoate concentration in the effluent did not increase under dark conditions. The DOC concentration in the effluent decreased according to the removal of the 3-chlorobenzoate by the UASB granules. These results indicated that granules in the UASB reactor provided the 3-chlorobenzoate removability after 80–100 d of adaptation to the 3-chlorobenzoate, and that the UASB reactor is useful for 3-chlorobenzoate removal.
Removal of 3-chlorobenzoate using an upflow anaerobic sludge blanket reactor under light conditions
S. Sawayama, K. Tsukahara, T. Yagishita; Removal of 3-chlorobenzoate using an upflow anaerobic sludge blanket reactor under light conditions. Water Sci Technol 1 May 2002; 45 (10): 151–156. doi: https://doi.org/10.2166/wst.2002.0315
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