基于多种水环境模型耦合的TMDL评估研究  

Evaluation of Total Maximum Daily Load Based on Coupling of Multiple Water Environment Models

作　　者：董进波 张家铨 武治国 王燕 傅崇德 王愚 DONG Jin‑bo;ZHANG Jia‑quan;WU Zhi‑guo;WANG Yan;FU Chong‑de;WANG Yu(Jiangsu Manjiangchun Urban Planning and Design Co.Ltd.,Zhenjiang 212008,China;Zhenjiang Water Service Group,Zhenjiang 212001,China;Wuhan Newfiber Optics Electron Co.Ltd.,Wuhan 430073,China)

机构地区：[1]江苏满江春城市规划设计研究有限责任公司,江苏镇江212008 [2]镇江市水业有限责任公司,江苏镇江212001 [3]武汉新烽光电股份有限公司,湖北武汉430073

出　　处：《中国给水排水》2023年第23期118-123,共6页China Water & Wastewater

基　　金：镇江市科技计划(社会发展)项目(SH2021012)。

摘　　要：在海绵城市建设背景下,通过构建汇水区和河湖水量水质耦合模型,模拟评估在受纳水体镇江金山湖的水环境质量达标情况下,各个汇水区所能分配的最大日负荷总量(TMDL)。耦合的多种水环境模型包括高度开发区域汇水区模型(PCSWMM)、低度开发区域汇水区模型(HSPF)、河湖模型(EFDC)。模型通过采集到的水量和水质数据进行率定及验证后,评估海绵城市建设条件下TMDL的変化情况。汇水区模型模拟结果显示,通过海绵城市建设,对面源污染物COD、NH_(3)-N和TP负荷的削减率分别可达到90%、67%和63%以上。汇水区和河湖水量水质耦合模型对金山湖水质的模拟结果显示,各水质指标现状负荷已达到目标负荷,无需额外削减。Under the background of sponge city construction,a model for coupling subcatchment with water quantity and quality of river and lake was established to simulate and evaluate the total maximum daily load(TMDL)that could be distributed in each subcatchment under the condition that the water environment quality of Jinshan Lake in Zhenjiang met the surface water standard.The water environment models included the highly developed subcatchment model(PCSWMM),the low developed subcatchment model(HSPF)and the river and lake model(EFDC).After calibrated and verified by the collected water quantity and quality data,the model evaluated the change of TMDL in the sponge city construction.The simulation results of subcatchment model showed that the sponge city construction demonstrated the load reduction rates of over 90%,67%and 63%for non‑point source pollutants COD,NH_(3)-N and TP,respectively.The simulation results of the coupling model showed that the current pollution load of Jinshan Lake reached the target load and there was no need for additional reduction.

关 键 词：最大日负荷总量 金山湖 模型耦合 海绵城市 

分 类 号：TU992[建筑科学—市政工程]