摘要
采用二维潮流数值模型和水质模型探讨了钦州湾污染物的扩散规律，利用钦州湾海域现场观测数据，计算了钦州湾的海水交换率，平均半更换期及环境容量。计算结果表明，在较大潮汐时，钦州湾的海水交换率为０．１２４，平均半更换期为７．２个潮周期，保持一级海水的ＣＯＤ排放量为每个潮周期２３４．５ｔ，保持二级海水的ＣＯＤ排放量为３６６．９ｔ。
The rules of pollutant transportion of the Qinzhou Bay were discussed by making use of two-dimensional tidal current model and water quality model. Based oil the marine investigation data, the turn-over rate, half exchange period and environmental capacity were computed. The results show that under bigger tide the turn-over rate of the Qinzhou bay is 0. 124, half exchange period is 7. 2 tidal periods, the permitted discharge of COD for first-class sea water is 234. 5 t per tidal period and that for second-class is 366.9 t per period.
出处
《广西科学》
CAS
1996年第2期65-70,共6页
Guangxi Sciences
关键词
污染物扩散
自净能力
环境容量
海湾
海水
numerical model
pollutant transportion
sea water turn-over rate
half exchange period
environmental capacity
