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目的 推荐一种适合乡镇水厂供水消毒较理想的消毒方法。方法 通过观察二氧化氯发生器在现场应用的消毒效果 ,核算消毒成本 ,调查观察应用全过程的运行管理状况。结果 二氧化氯发生器应用后 ,出厂水、管网水细菌总数、大肠菌群和游离余氯 3项指标每次检测合格率均达 10 0 % ,与应用前相比 ,水质的细菌学指标合格率显著提高 (χ2 出厂水 =44 2 9,χ2 管网水 =75 3 1,P均小于 0 0 0 5 )。每吨水消毒综合成本平均为 0 0 2 84元 ,发生器性能稳定 ,操作简单 ,无需专人看守 ,无较大故障 ,使用单位较为满意。结论 对大多数水厂采用液氯消毒有困难的 ,而经济条件较好的地区 ,化学法二氧化氯发生器提供了一种新型和适宜的消毒设备。
Objective To recommend a suitable water disinfection township water disinfection disinfection methods. Methods By observing the disinfection effect of chlorine dioxide generator in the field, the disinfection cost was calculated and the operation and management status of the whole process was observed. Results After the application of chlorine dioxide generator, the qualified rate of the total amount of bacteria in the outlet water, pipe network water, coliform bacteria and free residual chlorine reached 100% every time. Compared with before application, the bacteriological indexes of water quality The passing rate was significantly improved (χ2 factory water = 44 2 9, χ2 pipe network water = 75 3 1, P less than 0 0 0 5). The average cost per ton of water disinfection is 0 0 2 84 yuan, the generator performance is stable, easy to operate, no special guards, no major fault, the use of units more satisfied. Conclusions Chemical chlorine dioxide generators provide a new and suitable disinfection device for most water plants where liquid chlorine disinfection is difficult but where economic conditions are good.