琼江流域遂宁段水环境治理规划研究

杨永安; 刘兵; 杨娟; 龙帅; 王远铭; 李克锋

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,,():-.
	YANG Yong-an,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,,():-.

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琼江流域遂宁段水环境治理规划研究
杨永安¹, 刘兵², 杨娟², 龙帅², 王远铭³, 李克锋³
1.西华师范大学环境科学与工程学院;2.遂宁市生态环境安全应急中心;3.四川大学水力学与山区河流开发保护国家重点实验室

摘要:

水环境治理规划是解决水资源日益枯竭,水污染日趋严重的有效手段,在保护河流实践中具有重要的作用。本文选取我国典型小流域—琼江流域遂宁段为研究对象,在已有的治污措施与规划基础上,利用针对琼江流域构建的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水质标准,增大二、三产业污水和生活污水收集率和提高中水回用举措,以及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。预测结果表明,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,即使在最枯月也皆具备对各水质指标的纳污能力。本研究成果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：

分类号:X52;TU984

基金项目:琼江光辉出川断面主要污染物总磷、化学需氧量削减技术研究

Study on the framework of water environment treatment in the Suining section of Qiongjiang River basin

YANG Yong-an¹, LIU Bing², YANG Juan², LONG Shuai², WANG Yuan-ming³, LI Ke-feng³

1.School of Environmental Science and Engineering,China West Normal University;2.Emergency Center for Ecological Environmental Safety of Suining;3.State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University

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.