新型组合工艺对微污染原水中有机污染物和消毒副产物前体物的去除

REMOVAL OF ORGANIC MATTERS AND DISINFECTION BY-PRODUCTS PRECURSORS FROM MICROPOLLUTED RAW WATER BY THE NEW COMBINED PROCESSES

本文采用中试试验装置研究了生物陶粒过滤-微絮凝砂滤-活性炭吸附组合工艺，对微污染原水中有机污染物和消毒副产物前体物的去除效果。在原水UV_(254)为0.047～0.065cm^(-1)，DOC为2.70～4.10mg／L，TOC为3.50～5.00mg／L的条件下，组合工艺对UV_(254)、DOC、TOC平均去除率分别为98.4％、74.1％、69.2％。色-质联机分析结果表明，经组合工艺处理水中有机物由54种降至25种。组合工艺出水中三卤甲烷总含量不及常规工艺出水中该物质含量的五分之一。组合工艺能有效控制和消除水中有机物的污染，提供安全的优质饮用水。

In this paper the removal efficiencies of organic substances and precursors of disinfection by-products in micro-polluted raw water by the combined processes composed of ceramic biofiltration, micro flocculation filtration and GAC adsorption were studied. The removal efficiencies of UV254, DOC and TOC were 98.4%, 74.1%, 69.2% respectively, with the influent UV254 of 0.047～0.065/cm, DOC of 2.70～4. 10mg/L, TOC of 3.50～5.00mg/L. According to the GC-MS analysis results, the kinds of organic pollutants in the water were reduced from 54 to 25 through the treatment by the combined processes. The total content of THMs in the effluent of the combined processes was no more than 1/5 of that in the effluent of conventional process. The combined processes can eliminate organic pollutions and offer a safe drinking water of high quality.