广州市某区水厂汞污染调查

目的:了解某区水厂污染状况,为某区城镇居民饮水安全提供可行的解决方案。方法:对某区各水厂针对性采取不同监测方案,将所得数据进行分析。结果:水源水总体较好,出厂水基本上都含有汞,某些时段的出厂水汞含量超出限值;对某厂的非常规监测中发现,沉淀剂和使用后滤砂中均检出汞,疑为厂内蓄积和器壁吸附造成的出厂水污染。结论:某区水厂均存在厂内污染和蓄积问题,严重影响出厂水质量;因此,改进水处理工艺;定期清洗和更换厂内耗材;建立和完善相关法律法规,加强对地表水的保护,保证城镇居民的用水安全。

Investigation on mercury pollution of water plants in a certain district of Guangzhou

Objective:To understand the pollution status of water plants in a certain district and provide feasible solution to drinking water safety for residents.Methods:Different monitoring schemes were carried out in different water plants in this district,then the monitoring data were analyzed.Results:The quality of water source was generally in good condition,but the water from almost all plants included mercury,and the mercury content at a certain period exceeded the required limit;it was discovered from an abnormal monitoring of a certain plant that mercury was found from the precipitator and the used filter sand,which was regarded as the pollution from the accumulation and vessel wall absorption.Conclusion:All water plants in this district have the problems of plant pollution and accumulation,seriously affecting the water quality delivered.Therefore,it is a necessity to improve the technology of water treatment,to do cleaning and replace consumable materials regularly,to set up and improve relevant laws and regulations,and to enforce the protection of surface water.