Using BAC for HAA removal - Part 1: Batch study

作者：Zhou HJ; Xie YFF^*

来源：Journal American Water Works Association, 2002, 94(4): 194-200.

The stability and biodegradation of haloacetic acids (HAAs) in the presence of bioactivity were evaluated using batch experiments; a separate experiment assessed the carbon adsorption capacities of HAAs. HAAs were significantly degraded in dechlorinated drinking water the presence of suspended bacteria. Increasing the number of halogen atoms on an HAA decreased its biodegradation rate but increased its carbon adsorption capacity; increasing the number of bromine atoms on an HAA also increased its carbon adsorption capacity. Biologically active carbon effectively removed milligram-per-litre-level HAAs spiked in dechlorinated drinking water. This removal may be a result of the combination of carbon adsorption and biodegradation and can be described by a pseudo first-order reaction model. The findings from this study are significant for sample preservation for HAA monitoring and could lead to the development of an innovative technology for HAA control in drinking water.

• 出版日期2002-4