平原河网地区水体黑臭预测评价关键指标研究

Study on Key Indicators for Judging Black and Odorous Water in Area of Plain River System

水体黑臭判断标准尤其是关键指标的选取,是水体黑臭预测、评价和修复的依据。在综合考虑水体黑臭的产生机理、现有国内外研究成果以及上海中心城区中、小河道水质现状的基础上,选取造成平原河网地区水体黑臭的关键指标DO、CODMn、BOD5、NH3-N和TP构建水体黑臭预测评价指标体系。在结合单因子评价和综合指数评价两种方法的基础上,提出了预测和评价水体黑臭关键指标的控制要求:DO≥2 mg/L,CODMn≤15 mg/L,BOD5≤20 mg/L,NH3-N≤8 mg/L,TP≤0.8 mg/L。

The judgement criterion of black and odorous water, especially how to choose the key indicators is the base of black and odorous water prediction, assessment and restoration. Based on the theories of black and odorous water, the present researches and the background of river water quality in the urban districts of Shanghai, a new criterion was established. The new criterion is composed of five indexes, including ：DO,CODMn,BOD5,NH3-N and TP.DO≥2 mg/L,CODMn≤15 mg/L,BOD5≤20 mg/L,NH3-N≤8 mg/L,TP≤0.8 mg/L, and TP≤0.8 mg/L are the limited values of the quantitative indexes based on the single identification indexes and comprehensive identification indexes.