天津滨海新区水库水质状况分析

通过现场采样与室内分析,获取了滨海新区水库水质数据,采用综合指数法对滨海新区各水库富营养化进行了评价。结果显示,滨海新区营城水库出现了轻度富营养,其余各水库均为中营养;沙井子水库、营城水库、钱圈水库的个别指标超过《地表水环境质量标准》(GB 3838-2002)IV类水质标准,北大港水库及北塘水库超过地表水III类水质标准;作为未来天津水源地之一的北大港水库的总磷、总氮、化学需氧量等指标均超过饮用水水质标准,因此急需采取必要的水质净化措施。

Analysis of Water Quality in Reservoirs of Tianjin Binhai New District

The water quality data in the reservoirs of Tianjin Binhai New District were obtained through field sampling and laboratory analysis, and the Comprehensive Trophic Level Index Method was used to evaluate the eutrophication of each reservoir in Tianjin Binhai New District. The results indicated that (1) only Yingcheng Reservoir shows light eutrophication, whereas other reservoirs are moderately nutrient; (2) . some of the water quality indexes of Shajingzi Reservoir, Yingcheng Reservoir, and Qianquan Reservoir have higher values than those defined by the grade IV of Surface Water Environment Quality Standard (GB3838-2002), and some of water quality indexes of Beidagang Reservoir and Beitang Reservoir have higher values than those defined by grade III; and (3) TP, TN, and CODCr of Beidagang Reservoir exceed the drinking water standard. This reservoir is an important water source area of Tianjin City, therefore it needs immediate water purifying measures.