O_3-BAC工艺去除原水中典型异嗅物的效果

Treatment of Raw Water by Ozone-Biological Activated Carbon Process

模拟不同2-MIB浓度水平,探讨了臭氧生物活性炭工艺对2-MIB去除效果。研究表明,臭氧氧化对2-MIB具有较好去除效果,臭氧投加量在0.8～1.5 mg/L,预臭氧工艺段对2-MIB去除率可达25%～50%,后臭氧工艺段对2-MIB去除率可达35%～55%。在夏季高温期间,某水厂臭氧生物活性炭工艺出水嗅味明显改善,出厂水2-MIB达标,CODMn总去除率在50.5%,UV254总去除率在60.8%左右。

Simulating different concentrations of 2 - MIB, the removal of 2 - MIB by ozone/biological activated carbon process was discussed. The results showed that high removal rate of 2 - MIB was obtained by ozone oxidation. When the dosage of ozone is 0.8 1.5 mg/L, the removal rate of 2 -MIB by pre-oznation and post-ozonation is 25% - 50% and 35% -55%, respectively. During high- temperature summer, odor of effluent from 03- BAC in water plant was significantly improved, and the concentration of 2 -MIB is lower than limit of drinking water sanitary standard. The average removal rate of CODcr, and UV254 is 50.5% and 60.8%.