苦咸水淡化处理前后水质效果评价

Brackish Water Desalination Evaluation Before and After Treatment

目的掌握定西市市区生活饮用水经淡化处理后水质变化情况,为政府决策提供科学依据。方法采集水质淡化处理前后水源水、出厂水和管网末梢水进行检验。结果水源水合格率为71.43%,出厂水(处理后)合格率为84.62%,管网末梢水合格率为90.00%。平均总硬度:水源水为439.2mg/L,出厂水为(处理后)309.2mg/L,末梢水为306.3mg/L。结论处理后出厂水比未处理前出厂水水质明显好转,处理后管网末梢水比处理前末梢水合格率明显升高。由于水质处理能力有限,当市区用水量小时,混合后的总硬度相应较低,当市区用水量逐渐增大时,总硬度等部分指标就相对升高。建议继续加大投入和改善硬件设施,提高供水单位水处理能力,其次进一步加强管理、健全制度,提高检修能力,保持软化设备的最佳生产状态,做到水质处理经常化,尽可能为原水掺入适量的软化水。

OBJECTIVE Dingxi master of urban life after the treatment of drinking water by desalination of water quality changes, in order to provide scientific basis for government decision-making. METHODS Collected water desalination water treatment before and after the water, finished water, the water pipe network peripheral to carry out inspection. RESULTS of water passing rate of 71.43 percent water, finished water （after treatment） the passing rate of 84.62%, the water pipe network peripheral 90.00% pass rate. Average total hardness, water 439.2 rag/L, the factory water （after treatment） 309.2 mg/L, peripheral water 306.3 mg/L. CONCLUSION finished water after the treatment than the untreated water manufactured before a marked improvement, after treatment than the water pipe network peripheral endings of water treatment prior to the passing rate increased obviously, because of the limited capacity of water treatment, when the urban water consumption hours, a mixture of the corresponding total hardness lower, when the urban water consumption gradually increases, some indicators such as total hardness relatively elevated. Recommendations continue to increase investment and improve the hardware facilities, improve the capacity of water treatment units, followed by further strengthening of management, sound systems, improve maintenance capacity, and maintain the best production equipment softened state, to do regular water quality treatment, as far as possible for the raw water. The introduction of an appropriate amount of softened water.