Application of Composite Constructed Wetland in the Ecological Restoration of Xinqiao River in Changhu Basin
Xinqiao River is an important secondary tributary of Changhu Lake.The tail water treated by the sew-age treatment plant of Junma Industrial Park and the domestic sewage from nearby residents are imported into Xinqiao River upstream,which leads to the water quality cannot be stable to reach class iii water quality,belong-ing to damaged rivers.It is urgent to carry out ecological restoration on the basis of pollution interception and silt removal.On the basis of investigation and data collection,the water volume of Xinqiao River entering the wetland was calculated.Scientific selection of design schemes,and the vertical subsurface flow constructed wetland was a-dopted,and the high efficiency sedimentation tank was arranged in the front section for pretreatment.The de-signed treatment scale was 20000 m3/d,and the effluent water quality met the class Ⅲ standard of Surface Water Environmental Quality Standard(GB3838-2002),effectively reducing the total amount of pollutants into the lake,and restoring the river and lake ecosystem.The Xinqiao River composite artificial wetland project can provide useful reference for ecological restoration of small watersheds in plain lake areas.
NETL
NSTL
万方数据
