基于EFDC模型的尾水回用于城市景观水体优化计算  

Optimization calculation of tail water reused in urban landscape water based on EFDC model

作　　者：章双双 潘杨[1,2] 李一平[3] 卢绪川 徐垚 王晨[1,2] 施国健 ZHANG Shuangshuang;PAN Yang;LI Yiping;LU Xuchuan;XU Yao;WANG Chen;SHI Guojian(School of Environmental Science and Engineering, Suzhou University of Science and Technology,Suzhou 215009 yChina;Environment Biotechnology Research Institute, Suzhou University of Science and Technology,Suzhou 215009 yChina;College of Environment y Hohai University,Nanjing 21009S y China;Nanjing Guohuan Science and Technology Co. , LtdyNanjing 210000 y China)

机构地区：[1]苏州科技大学环境生物技术研究所江苏省环境科学与工程重点实验室,江苏苏州215009 [2]苏州科技大学环境科学与工程学院,江苏苏州215009 [3]河海大学环境学院,江苏南京210098 [4]南京国环科技股份有限公司,江苏南京210000

出　　处：《水资源保护》2017年第6期74-78,91,共6页Water Resources Protection

基　　金：国家自然科学基金(51579071;51379061;50938005);江苏省特色优势学科二期立项项目;江苏省水处理技术与材料协同创新中心项目

摘　　要：以昆山市内蓬朗污水处理厂深度处理后的尾水回用于城市景观水体夏驾河为例,以环境流体动力学模型(environmental fluid dynamic code,EFDC)构建的夏驾河三维非稳态水量模型为基础,考虑经济、社会、环境等多方面的效益,构建目标函数,研究6种设计情景下尾水回用的综合效益,确定污水处理厂尾水回用的最佳运行方案。结果表明,从经济、社会、环境效益最大化的角度出发,昆山市夏架河尾水回用最优方案为:出水口选为距太仓塘4.5 km处,排水方向为吴淞江,回用流量为3.4万m3/d。尾水回用于景观水体可以有效改善水体交换,蓬朗污水处理厂尾水入河位置及回用量流量直接影响夏驾河换水周期以及夏驾河水质的好坏。As the problem of water resources shortage and water pollution was intensifying day by day, it is of great significance to maintain river ecological flow and to ensure that the water quality does not deteriorate because ofstagnation by reusing deeply disposed tail water of sewage plant as landscape water. How to plan the reuse of waterand the location of the outlet to achieve economic, social, environmental and other benefits has become a problem worthy of study. This paper took Penglang sewage treatment plant of Kunshan City as an example, the deeply processed tail water was reused as landscape water in Xiajia river. Based on the three-dimensional unsteady waterquantity model of Xiajia River constructed with environmental fluid dynamics model （ E F D C ） , a n d considering the benefits in economic, social, environmental and other aspects, the comprehensive benefits of tail water reuse under6 design scenarios were studied to determine the optimal operation scheme of the sewage plant. The results show that the when the water outlet is chosen to be 4. 5 km from Taicang Tang river with the drainage direction to the Wusong River and back flow is 34000 m3/d, it is the best scheme that finally c an be u s ed to reuse the tail water of Xiajia River in Kunshan City, judging from the point of maximum economic, social and environmental benefits. In a word, the application of tail water to landscape water can effectively improve water exchange, the position of tail water flowing into the river from Penglang sewage treatment plant and back flow amount can directly affect the water exchange cycle and water quality of Xiajia River.

关 键 词：尾水回用 EFDC模型 水动力 富营养化 最优方案 

分 类 号：X703[环境科学与工程—环境工程]