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水源水被污染已成为饮用水处理工艺中特别关注的问题。通过中试和生产性的试验,对现有的工艺进行升级,在构筑物不变的情况下将原有的曝气池升级为生物预处理池,将砂滤池升级成生物滤池,试验结果对比表明:(1)中试生物预处理工艺过程中,高锰酸盐指数的去除率约16.4%,NH_4~+-N去除率能够达到60.5%左右,填料上生物量最高28.6 nmol P/(g填料);(2)中试生物滤池对高锰酸盐指数和NH4+-N的去除率分别达到33.4%和87.5%,对浊度和色度去除率分别为74.7%和24.3%,填料上生物量最高有37.8 nmol P/(g填料);(3)在生产性规模的生物预处理过程,高锰酸盐指数去除率为19.2%,而NH_4~+-N去除率为68.3%;(4)在生产性规模的生物滤池和砂滤池过程中,高锰酸盐指数平均去除率为30.7%和5.6%、NH_4~+-N平均去除率为81.3%和25.6%、UV254平均去除率为16.4%和0.03%、对色度去除率分别为27.7%和11.2%;生物滤池出水中总AOC比砂滤池出水中总AOC减少了63.8%,低于100μg乙酸碳/L。
Polluted source water has become a special concern in drinking water treatment processes. Through the pilot and productive tests, the existing process is upgraded, the original aeration tank is upgraded to a biological pretreatment tank under the same structure, the sand filter tank is upgraded into a biofilter, and the test result The results showed that: (1) The removal rate of permanganate index was about 16.4%, the NH_4 ~ + -N removal rate was about 60.5% and the highest biomass was 28.6 nmol P / ( g filler); (2) The removal rate of permanganate index and NH4 + -N in pilot-scale biofilter was 33.4% and 87.5% respectively, and the removal rates of turbidity and color were 74.7% and 24.3%, respectively (3) At the productive scale of biological pretreatment, the removal rate of permanganate index was 19.2% and the removal rate of NH_4 ~ + -N was 68.3%. (4) The average removal rates of permanganate index were 30.7% and 5.6%, while the average removal rates of NH_4 ~ + -N were 81.3% and 25.6% in the production scale biofilter and sand filter. The average of UV254 The removal rates of 16.4% and 0.03% were 27.7% and 11.2%, respectively. The total AOC in the effluent from the biofilter was 63.8% less than the total AOC in the effluent from the sand filter.