长兴岛污水处理厂尾水外排影响数值模拟研究  

A Numerical Simulation Study on the Effect of Effluent Discharge from Changxing Island Wastewater Treatment Plant

作　　者：陈义中[1] 卢士强[1] 林卫青[1] 

机构地区：[1]上海市环境科学研究院

出　　处：《上海环境科学》2008年第4期147-151,共5页Shanghai Environmental Sciences

摘　　要：针对长兴岛污水处理厂的远期规划,使用Delft-3D模型系统建立了长江口杭州湾大范围海域二维水动力、水质模型,采用边界贴体正交曲线网格,克服了计算区域边界的不规则性。应用模型对污水外排长江口的环境影响进行数值模拟分析。结果表明：模型能较好地模拟长江口及毗邻水域的水位、流场和污染物浓度的变化过程;长兴岛污水处理厂尾水排放对水质的影响非常小,无论是枯季还是洪季,排放口附近水域NH3-N和COD（Cr）的浓度增量都远低于0.1 mg/L;尾水排放对附近水域环境敏感目标（如青草沙水源地、九段沙湿地自然保护区）的影响十分有限。By using Delft-3-D model system, a 2-D hydrodynamic and water quality model covering large areas of Yangtze Estuary and Hangzhou Bay was built up for simulating the effluent discharge into Yangtze River according to the long-term planning of Changxing Island Wastewater Treatment Plant. The simulation has shown that the discharge of the effluent would exert a slight influence on the quality of receiving water body. The increment of NH3-N and COOcr levels in the vicinity of the effluent outfall would be always far below 0.1 mg/L both in drought and flood seasons. The impact on the adjacent sensitive water bodies, such as Qingcao Shoal reservoir, Jiuduan Shoal wetland reserve area, and etc., would be very limited.

关 键 词：长兴岛污水处理厂 尾水外排 水动力模型 水质模型 水环境影响 数值模拟分析 

分 类 号：X505[环境科学与工程—环境工程] TP391.7[自动化与计算机技术—计算机应用技术]