邗沟河生态工程治理成效分析

Analysis on the Effect of Ecological Engineering Treatment of Hangou River

针对邗沟河水质污染情况,对其进行系统性生态化治理,分期实施截污工程、河道清淤工程、生态化工程等,使水质达到地表Ⅲ类水的水质目标。对生态化治理前后邗沟河的水质变化进行综合分析,结果表明:治理前水质普遍为地表Ⅳ-Ⅴ类水,治理后各监测断面溶解氧、COD、高锰酸盐指数、氨氮、总磷平均值分别为11.43 mg·L^(-1)、16.68 mg·L^(-1)、3.72 mg·L^(-1)、0.70 mg·L^(-1)、0.09 mg·L^(-1),水质得到较大改善,治理成效达到预期目标,可为其他城市内河生态治理提供借鉴。

In view of the water pollution situation of Hangou River,systematic ecological treatment has been carried out,and pollution interception project,river silt removal project and ecological engineering have been carried out in stages,so that the water quality can reach the surface gradeⅢwater quality target.Comprehensive analysis of water quality changes in Hangou River before and after ecological treatment shows that:water quality before treatment is generally surface water four to five categories.After treatment,the average values of dissolved oxygen,COD,permanganate index,ammonia nitrogen and total phosphorus in each monitored section were 11.43 mg·L^(-1),16.68 mg·L^(-1),3.72 mg·L^(-1),0.70 mg·L^(-1),0.09 mg·L^(-1),respectively.The water quality has been greatly improved and the treatment effect has reached the expected goal,which can provide reference for ecological management of other urban rivers.