摘要
针对松花江流域存在季节性水环境容量不均衡的问题,以松花江干流哈尔滨段为研究对象,采用二维岸边排放模型段尾控制法,在动态水文设计条件下,计算COD和NH_3—N的环境容量。研究结果表明:计算区段内COD和NH_3—N的环境容量分布不够均匀,且COD环境容量分布均匀性更差;COD和NH_3—N的环境容量最大值出现在8月份,最小值出现在2月份,丰水期环境容量最大,枯水期环境容量最小;同时,实际环境容量要远远小于理想环境容量,且NH_3—N的环境压力更加严峻。动态水环境容量研究结果可为水环境容量的合理利用以及松花江水质保障提供可行的参考。
Based on the seasonal imbalance of water environmental capacity in Songhua River, the Har- bin section of the main stream of the Songhua River was used as the research object, and the COD and NH3--N environmental capacity of Songhua River Harbin section was calculated using two -dimensional section -end model under dynamic hydrological design conditions. The results showed that the environ- mental capacity distribution of COD and NH3--N was uneven, and the environmental capacity distribu- tion of COD was more unsatisfactory than that of NH3--N. The peak and valley value of the COD and NH3--N environmental capacity appeared in August and February respectively. As for different seasons, the maximum and minimum value of the COD and NH3--N environmental capacity appeared in flood sea- son dry season respectively. The actual value of water environmental capacity was much lower than the i- deal value, and the environmental pressure of NH3--N was more severe accordingly. The investigation results may serve as reference for efficient utilization of environmental capacity and water quality security in Songhua River.
作者
杜慧玲
于晓英
曲茉莉
DU Huiling;YU Xiaoying;QU Moli(Heilongjiang Provincial Research Academy of Environmental Sciences, Harbin 150000, China)
出处
《水资源与水工程学报》
CSCD
2018年第2期69-75,83,共8页
Journal of Water Resources and Water Engineering
基金
国家水体污染控制与治理科技重大专项(2014ZX07201-012)
关键词
动态水环境容量
氨氮
COD
松花江哈尔滨段
dynamic environmental capacity
ammonia nitrogen
chemical oxygen demand（COD）
Songhua River Harbin section
