XUTing-ting,ZHENGRui-bin,BANYuan-chong,et al.Research on Comprehensive Management of Water Environment in Huangjiang River Basin of Haifeng County, Shanwei City[J].China Water & Wastewater,2023,39(22):137-143.
汕尾市海丰县黄江河流域水环境综合治理研究
- Title:
- Research on Comprehensive Management of Water Environment in Huangjiang River Basin of Haifeng County, Shanwei City
- Keywords:
- Huangjiang River basin; source control and pollution interception; endogenous treatment; ecological restoration
- 摘要:
- 由于人口集中、生产生活活动强度大，汕尾市黄江河（西闸断面以上）流域存在突出的生活污水直排、畜禽养殖面源污染等问题，再加上河道自净能力不足，西闸国控断面水质在枯水期为地表Ⅳ类或Ⅴ类，主要污染指标为COD、NH3-N、TP。为实现断面水质达到地表Ⅲ类水目标，针对水质评价结果、污染源特征，系统性提出了流域综合治理技术路线，采取了消除镇区生活污水直排口、治理畜禽养殖污染、收集处理农村生活污水等控源截污工程措施，河道清淤、支流水质净化等内源治理工程措施，以及河滨带植被恢复、河道生态补水等生态修复工程措施。这些工程措施实施后，黄江河入河污染物大幅削减，水体自净能力显著提升，西闸国考断面水质稳定达到地表水Ⅲ类标准。
- Abstract:
- Due to the concentration of population and the intensity of production and living activities, the Huangjiang River basin (above the Xizha section) has prominent problems such as direct discharge of domestic sewage, non-point source pollution of livestock and poultry breeding, and insufficient self-purification capacity of the river. The water quality of the Xizha section under national control is level Ⅳ or Ⅴ of surface water standard in the dry season, and the main impact indicators are COD, NH3-N and TP. In order to achieve the goal of level Ⅲ water quality at the section, the technical route of comprehensive watershed management was systematically proposed based on the water quality assessment results and pollution source characteristics. Measures for source control and sewage interception were taken, including the elimination of direct domestic sewage outlets in towns, the treatment of livestock and poultry breeding pollution, the collection and treatment of rural domestic sewage, the internal control engineering measures such as river dredging and tributary purification, and the ecological restoration engineering measures such as riparian vegetation restoration and river channel ecological supplement. After the implementation of the project, the pollutants entering the Huangjiang River have been greatly reduced, the self-purification capacity of the water body has been significantly improved, and the water quality of the national controlled section of Xizha has reached the level Ⅲ standard for surface water.
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