Research on the Purification Effect of Aquatic Plants Based on Grey Clustering Method

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Gu, Sudan^1 ; Du, Fuhui^1

College of Water Conservancy and Hydropower Engineering, Hebei University of Engineering, Handan

056001, China^1

关键词: Chemical decomposition;    Constructed wetlands;    Environmental quality standards;    Evaluation standard;    Gray clustering;    Hydrophyte;    Purifying effect;    Water quality improvements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012118/pdf
DOI  :  10.1088/1757-899X/301/1/012118

来源: IOP

【 摘 要 】

This paper uses the grey clustering method to evaluate the water quality level of the MingGuan constructed wetland at the import and export of artificial wetlands. Constructed wetland of Ming Guanis established on the basis of the Fuyang River's water quality improvement, to choose suitable aquatic plants, in order to achieve the Fuyang River water purification effect. Namely TP, TN, NH3-N, DO, COD and COMMn and permanganate index are selected as clustering indicators. Water quality is divided into five grades according to the Surface Water Environmental Quality Standard (GB3838-2002) as the evaluation standard. In order to select the suitable wetland plants, the purification effect of 6 kinds of higher aquatic plants on the sewage of fuyang river was tested. one kind of plants was selected: Typha. The results show that the water quality of the section is gradually changed from V water quality to III water quality. After tartificial wetland of cycle for a long time, Typha has good purification effect. In November, water quality categories are basically concentrated in the VI, V class, may be caused by chemical decomposition of aquatic plants, should strengthen the academic research.