基于不同设计水文条件的铁岭水环境容量核算  

Calculation of water environmental capacity in Tieling based on different design hydrological conditions

作　　者：彭嘉玉[1,2] 雷坤[2] 乔飞[2] 周刚[2] 张鑫 郝晨林[2] 王淑一[2] PENG Jiayu LEI Kun QIAO Fei ZHOU Gang ZHANG Xin HAO Chenlin WANG Shuyi(College of Water Science, Beijing Normal University, Beijing 100875, China State Environmental Protection Key Laboratory of Estuarine and Coastal Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China TSI Instrument Trading （Beijing） Co. , Ltd, Beijing 100081, China)

机构地区：[1]北京师范大学水科学研究院,北京100875 [2]中国环境科学研究院国家环境保护河口与海岸带环境重点实验室,北京100012 [3]提赛环科仪器贸易(北京)有限公司,北京100081

出　　处：《环境工程技术学报》2017年第4期470-476,共7页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07505-005;2013ZX07501005)

摘　　要：水环境容量是污染物总量控制的重要理论基础,设计水文条件的选取是水环境容量核算的关键内容。建立了铁岭流域稳态水质模型,计算了在生物学方法(30B3、4B3)和水文学方法(7Q10、30Q10)条件下铁岭控制单元的水环境容量。结果表明:30B3和30Q10设计水文条件下COD水环境容量分别为8 048.74和9 658.49 t/a,氨氮水环境容量为549.15和658.97 t/a;4B3和7Q10设计水文条件下氨氮的水环境容量为439.33和494.26 t/a。传统水文学方法核定的水环境容量与生物学方法核定结果相近,但是其设计流量的保证率偏低,污染防控风险增加。水环境容量与入河污染负荷的核定结果表明,铁岭市经济社会的发展已经超过了其水环境承载力,需优化水库的调节能力,合理配置水资源,以增加河道纳污能力,实现污染防控目标。Water environment capacity（ WEC） is an important theoretical basis of total pollutant control,and the selection of the design hydrological condition is the key step to calculate the WEC. A steady state model of water quality in Tieling section of the Liaohe River Basin was built,and the WEC of Tieling control unit was calculated under 30B3,4B3,7Q10,30Q10 design hydrological conditions. Under the 30B3 and 30Q10 design hydrological conditions,the WEC of COD was 8 048. 74 and 9 658. 49 t/a,respectively,while that of ammonia nitrogen was 549. 15 and 658. 97 t/a,respectively. Under the 4B3 and 7Q10 design hydrological conditions,the WEC of ammonia nitrogen was 439. 33 and 494. 26 t/a,respectively. The WEC calculated by traditional hydrological method is similar with the result of ecological security method,but the daily flow guarantee rate of traditional hydrological method is relative low,which leads to the increase of pollution prevention and control risk. According to the calculation result of WEC and pollution load discharge into the river,the development of Tieling City has exceeded the water environment carrying capacity. In order to increase the pollution carry capacity and achieve the pollution prevention objectives,it is imperative to optimize the adjustment capacity of the reservoirs and rationallyallocate the water resources.

关 键 词：水环境容量 设计水文条件 风险控制 水环境管理 

分 类 号：X26[环境科学与工程—环境科学]