| 引用本文: | 杨永安,刘 兵,杨 娟,等.琼江流域遂宁段水环境治理规划研究[J].灌溉排水学报,2022,41(S2):94-98. |
| YANG Yongan,LIU Bing,YANG Juan,et al.琼江流域遂宁段水环境治理规划研究[J].灌溉排水学报,2022,41(S2):94-98. |
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| 摘要: |
| 水环境治理规划是解决水资源枯竭和水污染的有效手段，在河流生态保护中具有重要作用。选取我国典型小流域—琼江流域遂宁段作为研究对象，在已有治污措施与规划的基础上，针对琼江流域构建SWAT模型，根据水域纳污能力的计算结果，通过提升污水处理厂出水的水质标准，增大二、三产业污水和生活污水收集率，提高中水回用举措，完善农村散排生活污水处理方式和排放途径，研究并比较了新增治污规划前后的3个典型断面水质状况和纳污能力。结果表明，新增治污规划后水平年各典型断面CODCr、NH3-N与TP在全年均能达到Ⅲ类水质标准，即使在最枯月也具备对各水质指标的纳污能力。本研究可为琼江流域水环境保护提供科学依据和技术支撑。 |
| 关键词: 琼江遂宁段；SWAT模型；治污规划；纳污能力 |
| DOI：10.13522/j.cnki.ggps.2022199 |
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| Study on the Framework of Water Environment Treatment in the Suining Section of Qiongjiang River Basin |
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YANG Yongan, LIU Bing, YANG Juan, LONG Shuai, WANG Yuanming, LI Kefeng
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1. College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China;
2. Emergency Center for Ecological Environmental Safety of Suining, Suining 629000, China;
3. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
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| Abstract: |
| The framework of water environment treatment is an effective way to cope with the running out of water resources and the deterioration of water quality. It also has important significance in the practice of river conservation. The Suining section of Qiongjiang River basin, a typical small watershed in China, was chosen as the research object in this study. On the basis of existing frameworks and measures for water quality, and according to the result of pollution receiving capacity from SWAT model, we proposed three main measures as a whole framework to guarantee the water quality, which includes improving the effluent standard of sewerage treatment plants, increasing the sewerage collection rate the reuse of effluent, improving the treatment methods and discharge channels of rural scattered domestic sewage. The water quality and pollution receiving capacity with and without the new framework proposed in this study were calculated and compared in three typical profiles. The result showed that the CODCr, NH3-N and TP could reach the standard of class Ⅲ in a whole year in typical profiles, and the river still had the pollution receiving capacity for CODCr, NH3-N and TP in the driest month. The result of this study can provide a scientific basis and technique support for the water environment conservation in Qiongjiang River basin. |
| Key words: Suining section of Qiongjiang River basin; SWAT model; framework of water environment treatment; pollution receiving capacity |
