城镇自来水厂两种处理工艺各工艺段水质调研

发布时间：2018-03-18 19:59

本文选题：饮用水处理工艺　切入点：生物活性炭　出处：《复旦大学》2014年硕士论文　论文类型：学位论文

【摘要】：分析水厂生物活性炭工艺和膜工艺各工艺段的出水水质,发现两种饮用水处理工艺均能对浊度达到99%以上的去除率,对UV254总去除率分别为29%和26%,对总有机碳的总去除率分别为49%和42%,高锰酸盐指数总去除率为28%和26%,对氨氮和总氮去除效果较差。不同分子量范围占峰面积也不相同,把所测结果分为10KDa、1K-10KDa和1KDa三种范围。对比两种工艺各工艺段出水中有机物分子量分布特性和有机物种类变化可知,两种工艺对1K-10KDa分子量有机物均能有效去除,去除率分别为26%和34%,且膜工艺对1KDa分子量有机物控制效果较好。两种工艺中原水含有一定程度的氯代有机物、不同种类的芳香烃和烷烃,种类较多。生物活性炭工艺中砂滤工艺段,膜工艺中混凝沉淀与膜1、膜2、膜、膜4工艺段均能有效控制有机物种类,消毒后出水中有机物种类有一定增加。两种工艺除消毒后出水外各工艺段氯代消毒副产物浓度较低,两种工艺中原水中卤乙酸和氯仿浓度分别为8.5μg/L和1.5μg/L,经消毒后出水氯代消毒副产物浓度增加,生物活性炭工艺消毒后出水卤乙酸和氯仿浓度分别为15.5μg/L和2.9μg/L,膜工艺分别为10.4μg/L和2.8μg/L,氯消毒对消毒副产物的生成有重要影响。另外,膜工艺对卤乙酸和氯仿的控制作用优于生物活性炭工艺。生物活性炭工艺和膜工艺中原水生成潜势最高,卤乙酸生成潜势分别为194.8μg/L和1931μg/L,氯仿生成潜势浓度分别为105.2μg/L和107.3μg/L,其它工艺段出水生成潜势变化不大,生物活性炭工艺段微生物的代谢生长也对生成潜势有一定的影响。
[Abstract]:The effluent quality of biological activated carbon (BAC) process and membrane process were analyzed. It was found that the turbidity could be removed more than 99% by the two drinking water treatment processes. The total removal rate of UV254 was 29% and 26, the total removal rate of total organic carbon was 49% and 42, the total removal rate of permanganate index was 28% and 26, and the removal efficiency of ammonia nitrogen and total nitrogen was poor. The measured results were divided into three ranges: 10K Dawei 1K-10KDa and 1KDa. By comparing the molecular weight distribution characteristics of organic matter and the variety of organic compounds in the effluent of each process, it can be seen that the two processes can effectively remove 1K-10KDa molecular weight organic matter. The removal rates were 26% and 34, respectively, and the membrane process had better control effect on 1KDa molecular weight organic compounds. The raw water of the two processes contained a certain degree of chlorinated organic compounds, different kinds of aromatic hydrocarbons and alkanes. In the biological activated carbon process, sand filtration process, coagulation sedimentation and membrane 1, membrane 2, membrane 4 process can effectively control the kinds of organic matter. After disinfection, the kinds of organic compounds in the effluent increased to a certain extent, and the concentration of chlorinated disinfection by-products in the two processes was lower than that in the effluent after disinfection. The concentrations of haloacetic acid and chloroform in raw water were 8.5 渭 g / L and 1.5 渭 g / L, respectively. The concentrations of haloacetic acid and chloroform were 15.5 渭 g / L and 2.9 渭 g / L, respectively, and those of membrane process were 10.4 渭 g / L and 2.8 渭 g / L, respectively. Chlorine disinfection had an important effect on the formation of disinfection by-products. The control effect of membrane process on haloacetic acid and chloroform is superior to that of biological activated carbon process. The potential of raw water formation is the highest in biological activated carbon process and membrane process. Halogenoacetic acid formation potential was 194.8 渭 g / L and 1931 渭 g / L, chloroform formation potential concentration was 105.2 渭 g / L and 107.3 渭 g / L, respectively.
【学位授予单位】：复旦大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU991.21

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