污水厂尾水对河流水质控制断面水质影响分析

Analysis on the influence of sewage plant tail water on river water quality control section

污水处理厂排放的尾水对城市河流水质会产生一定的影响,尤其是对排放口附近水域的影响。本文以广州市32家污水处理厂为例,采用一维感潮河网水动力-水环境模型对珠江三角洲河网区进行模拟,计算各污水厂尾水正常排放工况下,在特征水文条件下各水质控制断面的水质受影响程度(增值)以及评价污水厂尾水对水质控制断面的影响及其时间空间特征。

The tailwater discharged by sewage treatment plants has a certain impact on the water quality of urban rivers, especially on the waters near the discharge outlet. Taking 32 sewage treatment plants in Guangzhou as an example, the one-dimensional tidal river network hydrodynamic water environment model is used to simulate the river network area of the Pearl River Delta, and the tail water of each sewage plant is calculated under normal discharge conditions.Under the characteristic hydrological conditions, the water quality affected degree(value-added) of each water quality control section, and the impact of the tail water of the sewage plant on the water quality control section and its time and space characteristics are evaluated.