景观河流溢流堰对污染水体的影响研究

Study on Influence of Overflow Weir of Landscape River on Polluted Water

以某市护城河上所修建的溢流堰为例,实地观测其复氧效果。并长期监测位于坝体上部与坝体下部的1#、2#观测点,定期测量DO、SS、COD等指标。结果表明:在河段上的溢流坝能增加了水体下游的溶解氧,最大可增加1.31mg/L在夏季和可以有效地去除水体中的SS、COD指标。

Taking an overflow weir constructed on a city river as an example, the article describes its reoxygenation effect observed in the field, the 1# and 2# observation points located in the upper part and the lower part of dam body monitored for a long term, and the indexes of DO, SS and COD regularly measured.The result shows that the overflow dam on the river section can increase the dissolved oxygen(DO) at the downstream of the water body, can be the maximum increase of 1.31 mg/L in summer, and can effectively remove the indexes of SS and COD in the water body.