长距离给水管网氯胺消毒的控制研究

Control of chloramine disinfection in long distance water supply network

以某市第二水源工程供水管网为研究对象,通过测定余氯和菌落总数,考察了氨、氯质量比和出厂水余氯浓度对长距离给水管网氯胺消毒效果的影响。结果表明,在氨、氯质量比为1∶4.5时,通过适当提高出厂水余氯浓度,可以有效改善长距离输水管网中的水质,避免增加中途加氯设备,以及便于水厂管理。

As an example of water supply network in the secondary water source engineering of the city, the effect of ammonia and chlorine mass ratio and outflow residual chlorine concentration on chloramine disinfection was investigated for long distance water supply network through detection of residual chlorine and total amount of bacteria. The results showed that it could effectively improve the water quality, avoid the increase of chlorine feeding equipment in halfway when the mass ratio of ammonia and chlorine was 1 ： 4.5 and the residual chlorine concentration was suitably improved. It is convenient for waterworks management.