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通过比较生物活性炭工艺和臭氧/活性炭工艺去除消毒副产物前体物的性能,分析了经两种工艺处理后生成消毒副产物的风险。结果表明:生物活性炭工艺和臭氧/活性炭工艺对TOC和UV254均有去除效果,但臭氧/活性炭工艺远优于生物活性炭工艺。生物活性炭工艺对三卤甲烷前体物的去除率可达25%以上,而臭氧/活性炭工艺的去除效果更为显著,去除率在40%以上,且以活性炭滤池去除为主。经加氯消毒后,臭氧/活性炭工艺出水三氯甲烷和三氯乙醛的生成量比生物活性炭工艺都有所降低。因此,臭氧/活性炭工艺相比于生物活性炭工艺更能有效降低生成消毒副产物的风险。
By comparing the performance of biocatalyst and ozone / activated carbon process to remove precursor of disinfection by-products, the risk of sterilizing by-products generated by the two processes was analyzed. The results showed that the bio-activated carbon process and the ozone / activated carbon process have the removal effect on TOC and UV254, but the ozone / activated carbon process is far superior to the bio-activated carbon process. Bio-activated carbon process for trihalomethanesulfonate precursor removal rate of up to 25%, while the ozone / activated carbon process removal effect is more significant, the removal rate of 40% or more, and to remove activated carbon filter based. After chlorination, the production of trichloroethane and trichloroacetaldehyde in the effluent of ozone / activated carbon process is lower than that of bio-activated carbon process. Therefore, the ozone / activated carbon process is more effective at reducing the risk of disinfection byproducts than bio-activated carbon processes.