摘要
针对太湖风生流的特点,提出考虑风向风速频率修正及污染带控制的水环境容量计算方法,建立了太湖水量水质数学模型,并结合水文水质资料对流场和浓度场进行模拟和验证.在控制单个污染带面积为1～3 km2,污染带总长度为湖岸线长度10%的基础上采用该方法进行计算,计算结果更可靠.太湖CODcr的水环境容量为132727 t/a,TN的水环境容量为7700 t/a.
Aiming at the wind-driven current in Lake Taihu, a calculation method of combining joint frequency of wind directions, wind speeds and pollution zone control was used to study the capacity of water environment for Lake Taihu. A 2-D unstable-state model of water quantity and quality in Lake Taihu was established. By using hydrological data, the fields of flow and concentrations were numerically simulated, and the simulations were inter-compared. The pollution zone control method which is used to calculate the water environmental capacity was advanced by considering the affect of the speed and direction of wind. Control prineipia are single pollution control areas between 1 km2 and 3 km2 , and the total length of pollution zone less than 10% of land line. The CODcr capacity of Lake Taihu is 132727 t/a, and TN is 7700 t/a.
出处
《湖泊科学》
EI
CAS
CSCD
北大核心
2012年第5期693-697,共5页
Journal of Lake Sciences
基金
国家自然科学基金项目(51179053)
河海大学中央高校基本科研业务费项目(B103056)联合资助
关键词
水环境容量
风向
风速
太湖
Water environmental capacity
direction
wind speed
Lake Taihu
