沙颍河安徽段水环境容量计算及动态分析
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摘要
基于对沙颍河安徽段污染负荷的调查以及水质和流量监测数据的分析,采用MIKE11模型建立水流与水质模型,采用线性规划法,以入淮河干流Ⅲ类水为水质目标,计算沙颍河安徽段水环境容量并分析其动态特征。结果表明:沙颍河安徽段CODMn和氨氮年水环境容量分别为2.39万、0.76万t/a;受流量及上游水质影响,CODMn和氨氮水环境容量月变化较大,8月水环境容量最大,分别为3 557、1 363 t,3月水环境容量最小,分别为621、181 t;上游水质对沙颍河安徽段水环境容量影响显著。
Water flow and contaminant transport were simulatedby using MIKE11 based on the measured river discharge and concentration of CODMnand ammonia in the Shaying River basin of Anhui Province. The water environmental capacity of the Shaying River basin in this region was estimated by using the linear programming method with respect to the category Ⅲ of the water quality target of Huaihe River. The results show that the water environmental capacities of CODMnand ammonia are 23 900 t/a and 7 600 t/a respectively. The water environmental capacities of CODMnand ammonia fluctuate dramatically with the changes of the discharge and water quality of the upstream. The maximum water environmental capacities of CODMnand ammonia appear in August,showing 3 558 t and 1 363 t respectively,while the minimum ones appear in March,showing 621.8 t and 180.6 t respectively. The water quality of the upstream has a significant influence to the environmental capacity of the downstream of the river in Anhui Province.
Water flow and contaminant transport were simulatedby using MIKE11 based on the measured river discharge and concentration of CODMnand ammonia in the Shaying River basin of Anhui Province. The water environmental capacity of the Shaying River basin in this region was estimated by using the linear programming method with respect to the category Ⅲ of the water quality target of Huaihe River. The results show that the water environmental capacities of CODMnand ammonia are 23 900 t/a and 7 600 t/a respectively. The water environmental capacities of CODMnand ammonia fluctuate dramatically with the changes of the discharge and water quality of the upstream. The maximum water environmental capacities of CODMnand ammonia appear in August,showing 3 558 t and 1 363 t respectively,while the minimum ones appear in March,showing 621.8 t and 180.6 t respectively. The water quality of the upstream has a significant influence to the environmental capacity of the downstream of the river in Anhui Province.
引文
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[7]董飞,刘晓波,彭文启,等.地表水水环境容量计算方法回顾与展望[J].水科学进展,2014,25(3):451-463.
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[13]姚瑞珍.人工控制的半封闭河流水环境容量测算研究:以老府河为实例[D].武汉:华中科技大学,2006:34-43.
[14]李红亮,王树峰.不同设计水文条件下河北省水功能区纳污能力研究[J].南水北调与水利科技,2010,8(3):68-70.
[15] LI S Y,TOHRU M. Optimal Allocation of Waste Loadsin a River with Probabilistic Tributary Flow Under Transverse Mixing[J]. Water Environment Research,1999,71(2):156-162.
[16]李适宇,李耀初,陈炳禄,等.分区达标控制法求解海域环境容量[J].环境科学,1999,20(4):97-100.