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[目的]应用水质指数评价上海市浦东新区出厂水、管网水和二次供水水质现状。[方法]利用加拿大水质指数法评价浦东新区2012年水厂的出厂水、管网水和二次供水水质。采用逐步回归法对14项水质指标进行评价,以逐步回归法对水质指数的敏感性进行分析。[结果]浦东新区水厂的出厂水、管网水、二次供水监测点均存在水质超标问题。检测项目的超标数对水质评价指标影响最大。氨氮、浑浊度、高锰酸盐指数超标次数和频率最高;但浑浊度、铁、锰、高锰酸盐指数等指标对水质指数影响最大。以就近河道为水源的地区氨氮污染严重、水质较差。[结论]加拿大水质指数法能有效地评价不同类型水的水质质量,对于有效判别和强化水质管理具有重要的应用价值。
[Objective] The water quality index was used to evaluate the status quo of the factory water, pipe network water and secondary water quality in Pudong New Area of Shanghai. [Method] The quality of ex-factory water, pipe network water and secondary water supply of Pudong New Area’s waterworks in 2012 were evaluated by Canadian water quality index method. Stepwise regression method was used to evaluate 14 water quality indicators, and the sensitivity of water quality index was analyzed by stepwise regression. [Result] The out-of-water quality of factory water, pipe network water and secondary water supply monitoring points of Pudong New Area Water Pollution Control Project all existed. The exceeding standard of test items has the greatest impact on water quality evaluation index. Ammonia nitrogen, turbidity and permanganate index exceeded the highest frequency and frequency; turbidity, iron, manganese, permanganate index and other indicators of the water quality index. Ammonia nitrogen pollution is serious in the area where the nearest waterway is the source of water, and the water quality is poor. [Conclusion] The Canadian water quality index method can effectively evaluate the water quality of different types of water, and has an important application value for effectively distinguishing and strengthening water quality management.