UV/H_2O_2高级氧化法深度去除水中臭味物质

Removal of Odorous Compounds in Water by UV/H_2O_2 Advanced Oxidation Process

针对给水厂传统工艺难以有效处理高藻、高臭味原水的问题,采用中试探究了UV/H_2O_2高级氧化法对土臭素(GSM)和二甲基异冰片(2-MIB)这两种典型臭味物质的去除效能。结果表明,当H_2O_2剂量为6 mg/L、UV功率为2.0 kW、进水流量为2.9 m^3/h时,UV/H_2O_2系统对GSM和2-MIB的去除率最高可分别达到99.52%和99.26%,相应浓度均可降至5 ng/L以下,满足《生活饮用水卫生标准》(GB 5749—2006)的要求;另外,对单位耗能参数(E_(Eo))与H_2O_2投加剂量的关系进行拟合,发现该系统在去除水中臭味物质时能耗较低。

It is difficult to treat raw water with high algae concentration and odor effectively by tra- ditional technology in a water supply plant. To cope with the problem, a pilot-scale test on the removal of two typical odorants--geosmin （GSM） and 2-methylisoborneol （2-MIB） by UV/H2O2 advanced oxidation method was studied. The results showed that the maximum removal rates of GSM and 2-MIB were 99.52% and 99.26% when dosage of H2O2, power supply of UV and influent flow rate were 6 mg/L, 2.0 kW and 2.9 m3/h respectively. Both of the corresponding concentrations of the two pollutants were less than 5 ng/L, which met the requirements of the Standards for Drinking Water Qualit： 2006）. In addition, the relationship between the electrical energy per order （EEo） and Qualityy （ GB 5749 - the dosages of H2O2 was fitted, and it was found that energy consumption of the system was relatively lower when removing odorous compounds.