不同水期条件下的渭河陕西段纳污能力计算

Calculation of Pollutant Carrying Capacity in Shaanxi Section of Weihe River under Different Water Periods

摘要: 结合渭河干流陕西段水环境现状，贯彻最严格水资源管理制度，根据水资源保护目标，以渭河干流陕西段水功能区为研究对象，以COD和NH₃-N为有机污染物代表，采用国家标准纳污能力计算模型，将年时间尺度细化为丰水期、平水期、枯水期，计算了不同水期条件下的纳污能力，表明纳污能力不是定值，而是动态的，因此，能反映出年内纳污能力随时间的变化情况，可充分利用水域实际的纳污能力，为渭河流域水环境综合治理提供参考。

Abstract: Combined with the current situation of water environment in Shaanxi section of the main stream of Weihe River, implementing the strictest water resources management system, and it takes the water functional zone in Shaanxi section of the main stream of Weihe River as the research object according to the water resources protection objectives, takes cod and NH₃-N as the representatives of organic pollutants, uses the national standard pollutant carrying capacity calculation model, the annual time scale is subdivided into wet period, normal period and dry period, the pollutant carrying capacity under different water period conditions is calculated, which shows that the pollutant carrying capacity is not a fixed value, but dynamic, so reflects the change of pollutant carrying capacity with time in the year, and makes full use of the actual pollutant carrying capacity of the water area. It provides a reference for the comprehensive management of water environment in Weihe River Basin.