常规处理与深度处理工艺对南京长江原水中有机物去除效能比较

Comparison of Organic Matters Removal Efficiency between Conventional and Advanced Treatment Processes for Yangtze River Raw Water in Nanjing

以长江南京段原水为研究对象,通过常规处理及深度处理工艺(强化过滤工艺和生物活性炭工艺)对长江南京段水源水中有机物的去除效能进行对比研究。结果表明常规工艺对CODMn、UV254、DOC及BDOC的去除率分别为30%、41%、27%及25%。强化常规工艺和生物活性炭工艺各指标的去除率分别为34%和52%、48%和50%、37%和40%及74%和82%。强化过滤工艺及生物活性炭工艺对1,2,4-三氯苯的去除效果明显,能显著提高出水水质。常规工艺对MW大于5 kDa的有机物去除效果明显,强化过滤工艺对MW小于1 kDa的有机物去除率大于25%,生物活性炭工艺对各个分子量区间的去除效果都比较好,特别是对原水中占多数的MW小于1 kDa的有机物去除率大于30%。

Organic matter removal efficiencies of conventional water treatment process and advanced water treatment process for Nanjing raw water in Yangtze River was introduced.Removal efficiencies of CODMn,UV254,DOC and BDOC of conventional water treatment process,biological enhanced activated（BEA） process and biological activated carbon（BAC） of the original data process are about 30 %,34 %,52 %;41 %,48 %,50 %;27 %,37 %,40 %;25 %,74 %,82 %,respectively.In advanced water treatment process,chlorobenzene compounds are removed obviously.In conventional water process,organic matters whose molecular weights（MW） is larger than 5 kDa are removed obviously.Organic matters whose MW is less than 1 kDa contained a large portion of dissolved organic carbon（DOC） in the Nanjing raw water of Yangtze River,and furthermore in BEA process and BAC process removal rate of which are more than 25 % and 30 %,respectively.In BAC process,organic matters of various MW are removed effectively.