The objective of this research was to evaluate removal efficiency of micro-pollutants in a BAC filter that followed ozonation for long term operation. The experimental results showed that after continuous operation for one year BAC filter still maintained a removal of 15 ∼ 20% for CODMn and 20 ∼ 30% of removal for UV254. Correlative analysis based on lots of data found that empty bed contact time (EBCT) instead of flow rate could obviously impact on removal effect of micro-pollutants in BAC filter. And the optimal relationship between EBCT and removal effect of micro-pollutants for BAC filter was logarithm. On the other hand, long term running of BAC filter proved that there was a good removal of chloroform formation potential, but the removal of brominated trihalomethane formation potential decline with further bromization, even there appeared to be formation of bromoform in BAC filter.
Study on control of micro-pollutants by BAC filtration
Z. H. Zhang, L. Shao; Study on control of micro-pollutants by BAC filtration. Water Sci Technol 1 August 2008; 58 (3): 677–682. doi: https://doi.org/10.2166/wst.2008.441
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