An integrated model of substrate clogging in vertical flow constructed wetlands

Hua, G. F., Li, L., Zhao, Y. Q., Zhu, W. and Shen, J. Q. (2013) An integrated model of substrate clogging in vertical flow constructed wetlands. Journal of Environmental Management, 119 67-75. doi:10.1016/j.jenvman.2013.01.023


Author Hua, G. F.
Li, L.
Zhao, Y. Q.
Zhu, W.
Shen, J. Q.
Title An integrated model of substrate clogging in vertical flow constructed wetlands
Journal name Journal of Environmental Management   Check publisher's open access policy
ISSN 0301-4797
1095-8630
Publication date 2013-04-15
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.jenvman.2013.01.023
Volume 119
Start page 67
End page 75
Total pages 9
Place of publication London, United Kingdom
Publisher Academic Press
Collection year 2014
Language eng
Abstract This paper presents an integrated model of substrate clogging in a vertical flow constructed wetland (VFCW). The model simulates the reduction of pore space in the wetland substrate due to combined influences of various physical, biogeochemical and plant-related processes. A series of experiments based on laboratory-scale VFCWs were conducted to examine and measure key parameters related to clogging of the wetland substrate during operation under different conditions. The model was then validated using data collected from the experiments. The results showed that the model was able to replicate the clogging phenomenon as observed in the experiments, in particular, the characteristic clogging time. The model also predicted well individual contributions to clogging by accumulated inert suspended solids, microbial biomass and plant root materials during the wetland operation. Although the validation was based on the laboratory data, the results indicated that the model describes well the processes underlying the clogging and has the potential to become a tool for assessing the performance of prototype CWs in relation to clogging at both the design and operation stages.
Keyword Constructed wetland (CW)
Substrate clogging
Microbial biomass
Plant roots
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2014 Collection
 
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