【摘要】 河流水环境容量传统一维计算方法,存在初始假定条件下计算河段全程水质超标和排污口断面污染物混合浓度超标幅度过大的问题。针对此问题,提出考虑设计河段水质达标比例、设计断面水质超标幅度和设计河段计算单元长度的计算方法。以计算河段沿程污染物平均浓度达标为条件确定设计河段水质达标比例;借用稀释度理论方法确定设计断面水质超标幅度和设计河段计算单元长度。作为实例,对广西左江的某河段进行计算分析,容量计算安全性得以提高。更多还原

【Abstract】 There are two problems in one-dimensional calculation of water environmental capacity under initial hypothesis condition by traditional methods,that is,the water quality along the entire reach and mixed concentration of pollutants at the pollution outlet cross section are much beyond the standard.A calculation method was established on the basis of the designed percentage of the river reaches of which the water quality achieved the standard,designed excess extent of the pollutants of the sections beyond water quality standard and designed length limit of calculation river segment.The designed percentage was calculated under the condition that the average pollutant concentration along the reach achieved the standard.The designed excess extent of the pollutants of the sections and designed calculation length limit of calculation segment are resolved on basis of the concept of dilution ability.The capacity of some reaches of Zuojiang River in Guangxi Province was analyzed and calculated,and the safety of assimilation capacity calculation was enhanced.更多还原