城市生活饮用水卫生监督监测指标优化的研究

目的对城市生活饮用水卫生标准中除贾第鞭毛虫和隐孢子虫外的62项非常规监测指标进行优化,提高饮水卫生监测指标与监测频率的科学性。方法综合应用饮水水质卫生监测水质指标超标情况、超标风险、检测浓度低于方法检测限的频数,水质综合指标评价与粗糙集的属性约简等方法分析,对饮用水水质监测指标进行筛选,得出对饮水安全起主导作用的控制因子。结果优化结果显示城市饮用水中非常规62项水质指标中有40项水质指标可进行优化约简。结论对水质监测指标进行优化,调整监测指标与监测频率,可在确保饮用水水质安全的同时降低监测成本,减小卫生监督监测部门的压力。

Study on the optimization of monitoring indicators of drinking water quality during health supervision

Objective To optimize non-regular drinking water quality indices( except Giardia and Cryptosporidium) of urban drinking water. Methods Several methods including drinking water quality exceed the standard,the risk of exceeding standard,the frequency of detecting concentrations below the detection limit, water quality comprehensive index evaluation method,and attribute reduction algorithm of rough set theory were applied,redundancy factor of water quality indicators were eliminated,control factors that play a leading role in drinking water safety were found. Results Optimization results showed in 62 unconventional water quality monitoring indicators of urban drinking water,42 water quality indicators could be optimized reduction by comprehensively evaluation combined with attribute reduction of rough set. Conclusion Optimization of the water quality monitoring indicators and reduction of monitoring indicators and monitoring frequency could ensure the safety of drinking water quality while lowering monitoring costs and reducing monitoring pressure of the sanitation supervision departments.