基于河道断面自净需水要求的自净补水研究

发布时间：2018-05-20 16:51

本文选题：一维水质数学模型 + 河流自净需水量　；参考：《水电能源科学》2017年07期

【摘要】：根据汾河干流污染较为严重的现状和污染物类型,以一维水质数学模型和水量平衡原理为基础,建立了河流自净需水量的计算模型,据此计算出满足地面水环境质量目标的自净需水量,并根据年径流量的大小,进一步确定河道断面的自净补水量。结果表明,选取COD和NH3-N作为控制因子,计算的二坝和义棠断面自净需水量分别为2.97×10~8、5.53×10~8m~3,义棠断面自净需水量较大;自净补水主要发生在平水年和枯水年,丰水年的自净需水量基本满足要求,自净补水主要发生在一年的非汛期中;所得结果为汾河干流生态恢复和汾河水库的生态调度研究提供一定的理论基础。
[Abstract]:According to the serious pollution status and pollutant types of Fenhe main stream, based on the one-dimensional water quality mathematical model and the principle of water quantity balance, the calculation model of river self-purification water demand is established. Based on this, the self-purification water demand to meet the environmental quality goal of surface water is calculated, and the self-purification water supply of river section is further determined according to the size of annual runoff. The results show that the self-purification water requirement of Erba and Yitang sections calculated by COD and NH3-N are 2.97 脳 10 ~ (-8) ~ (8) ~ (5.53) 脳 10 ~ (8) m ~ (-1) respectively, and the self-purification water requirement of Yitang section is larger than that of "Yitong" section, and the self-purification and rehydration water mainly occurs in plain water year and dry year. The self-purification water demand in the year of high water supply basically meets the requirements, and the self-purification and rehydration mainly occurs in the non-flood season of one year, which provides a theoretical basis for the ecological restoration of the main stream of Fenhe River and the study of ecological regulation of Fenhe Reservoir.
【作者单位】：太原理工大学水利科学与工程学院;山西省东山供水工程建设管理局;
【基金】：水利部综合事业局(201436)
【分类号】：TV85;X522

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