饮用水消毒用二氧化氯发生器性能调查

Investigation on the Performance of Chlorine Dioxide Generators for Drinking Water Disinfection

目的了解目前我国市售二氧化氯发生器性能的整体状况。方法于2007—2008年按照一定原则选择6家生产企业生产的二氧化氯发生器,采用五步碘量法测定发生器出口液的二氧化氯产量、转化率、原料耗率等性能指标。结果二氧化氯一般采用现场发生制取,目前饮用水消毒中应用最为普遍的是氯酸盐法复合发生器和亚氯酸钠法高纯发生器。复合发生器的二氧化氯转化率平均值为57.06%,原料转化率均值为67.88%;高纯发生器的二氧化氯转化率平均值为84.78%,原料转化率均值为94.23%。结论高纯发生器的二氧化氯转化率优于复合发生器,且新的高纯二氧化氯发生方法在性能和消毒成本上更具优势。

Objective To preliminarily investigate the conditions of the performance of chlorine dioxide generator for drinking water disinfection and know the overall situation of the industry. Methods From 2007 to 2008, 6 companies＇ products were chosen for this investigation according to certain rules, and their performance indicators, such as chlorine dioxide output and conversion rate were tested by using the Five-step iodimetry method. Results On-site generating technology was commonly used, and the average conversion rate of the compound type generator was 57.06%, and the pure type generator was 84.78%. Conclusion The conversion rate of the pure type generator is better than the compound type, and the newly invented pure type generator has much better performance and lower disinfection cost.