长江常熟段排污口布置方案数值模拟论证研究

Numerical Simulation Research on Arranged Schemes for Sewage Discharge Outlets at Changshu Section of the Yangtze River

为合理确定常熟氟化工项目排污口布置方案 ,本文在分析长江常热段水环境特征的基础上 ,针对其复杂的水下地形和水流流场 ,建立了较为准确和实用的平面二维水流水质耦合数学模型 ,预测计算了三套方案污水对重点保护水域影响程度和范围 ,并从水流流场、水质影响评价、技术经济多角度对方案进行了比较论证 ,最终推荐污水江中排放的方案 ,为项目的工程设计和环境管理提供了科学依据。

To reasonably plan out the scheme for the sewage discharge outlets of Changshu Fluorine Chemical Industry Project,the article makes an analysis on the water environmental features of Changshu section of the Yangtze Rive,develops a plan two-dimensional model of coupled water flow-quality for its complicated underwater topography and stream flow-field.The model is relatively accurate and practicable to predict the impact of scheme on water quality.Varied schemes have been compared and demonstrated from multiple angles,such as flow field,impact assessment of water quality,technique and economy.The scheme of sewage discharge outlets away from the shore is recommended.The article provides a scientific basis for the engineering design and envirommental management of the project.