IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Experimental Research on the Purification of Urban Surface Water
Experimental Research on the Purification of Urban Surface Water
Author : Rui Liu, Xiaode Zhou and Ying Wang
In order to build purification cell for the restoration of surface water, polyester nonwovens was chosen as biofilm carriers combined with floating plant (Eichhornia crassipes) and submerge plant ( Egeria densa). The water turbidity and concentration of COD, NH -N, TN and TP were analyzed during 3 25d. Results demonstrated that Eichhornia crassipes has a better purifying effect than Egeria densa. Both of Eichhornia crassipes and Egeria densa with coverage of 60% can increase water transparency faster and show higher organic removal rate than the cells with coverage of 30%. But effect of plant biomass on nitrogen and phosphorus removal rate was not significant. Nonwoven-plants combination cell is better than a single non-woven or single aquatic plants system on purification result. The range analysis indicates that the existence of carriers is beneficial to the remove of COD and TP, while the type of pants is important to turbidity and NH -N. 3
File Size : 306,090 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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