流域畜禽养殖排污许可方案设计——以柘溪水库为例

排污许可作为一种有效的环境管理制度,对固定点源特别是流域规模化畜禽养殖场污染物排放具有一定的制约作用。以柘溪水库为例,以流域畜禽养殖总氮排放为研究对象,在小流域尺度上核算水环境容量及畜禽养殖总氮污染物排放负荷,结合不同行业类别污染物排放贡献率,确定流域水环境容量与畜禽总氮排放量之间的响应关系。并根据不同流域规模化畜禽养殖水环境容量,确定污染物排放限值及各流域排污许可设计方案,提出不同水环境容量目标下畜禽养殖污染治理与管控措施。

Design of discharge permit system of livestock and poultry breeding: a case study in Zhexi Reservoir Basin

As an effective environmental management instrument, the discharge permit system has certain restriction on pollutant discharge of point sources, especially of large-scale livestock and poultry breeding in the basin. The TN discharge from livestock and poultry breeding was studied in Zhexi Reservoir Basin. The water environmental capacity and the TN discharge load of livestock and poultry breeding were calculated on the small basin scale, and the response relationship between the environmental capacity of the river basin and the TN discharge of the livestock and poultry breeding determined according to the pollutant discharge contribution rates of different industries. The pollutant discharge limits and permit system program were identified according to the water environment capacity of large-scale livestock and poultry breeding for the basin, and the pollution control measures of livestock and poultry breeding under different environmental capacity targets were put forward.