E3S Web Conf.
Volume 194, 20202020 5th International Conference on Advances in Energy and Environment Research (ICAEER 2020)
|Number of page(s)||5|
|Section||Environmental Protection and Pollution Control|
|Published online||15 October 2020|
Study on the Operation Effect of Constructed Wetland Project for Tailwater Treatment—An Example from a Sewage Plant in Zhejiang Province
1 Zhejiang Guangchuan Engineering Consulting Co. Ltd., Hangzhou, Zhejiang 310020, China
2 Zhejiang Institute of Hydraulics and Estuary, Hangzhou, Zhejiang 310020, China
3 Zhejiang Key Laboratory of Water Disaster Prevention and Reduction, Hangzhou 310020, China
* Corresponding author: email@example.com
The constructed wetland project of tailwater from an urban sewage plant in central Zhejiang was selected to collect water samples in different seasons, and the samples were tested for chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN) and other indicators. The results showed that the operation effect of the constructed wetland project is good when the effluent from the sewage treatment plant meets the Class A discharge standard. Among them, the removal effect of TP was the best, with an average removal rate of 61.52%, reaching the standards of surface water class III and class IV in some tests. Besides, the removal effect of TP was stable and varies little with seasons. The removal rates of COD and TN were relatively low and varied greatly with seasons, which were higher in spring and summer than in autumn and winter, with a negative removal rate of TN in winter. This research provides practical data for optimizing the engineering design parameters and improving the operation management to promote the operation efficiency of the constructed wetland.
© The Authors, published by EDP Sciences, 2020
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