Roles of substrate microorganisms and urease activities in wastewater purification in a constructed wetland system

A vertical/reverse-vertical flow constructed wetland system was set up in Wuhan, China, to study its treatment efficiency of polluted lake water. The numbers of substrate microorganisms and urease activities in the substrate of the constructed wetland were determined by plate counts and colorimetric...

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Bibliographic Details
Published in:Ecological engineering 2003-12, Vol.21 (2), p.191-195
Main Authors: Liang, Wei, Wu, Zhen-bin, Cheng, Shui-ping, Zhou, Qiao-hong, Hu, Hong-ying
Format: Article
Language:English
Subjects:
Constructed wetland
Correlation
Purification effects
Substrate microorganisms
Urease activities
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Summary:A vertical/reverse-vertical flow constructed wetland system was set up in Wuhan, China, to study its treatment efficiency of polluted lake water. The numbers of substrate microorganisms and urease activities in the substrate of the constructed wetland were determined by plate counts and colorimetric analysis, respectively. The removal efficiencies of biochemical oxygen demands (BOD 5), chemical oxygen demands (COD), total phosphorus (TP), total Kjeldahl nitrogen (TKN), and total suspended solids (TSS) were measured by EPA approved methodology. The results showed there were significant positive correlations ( P
ISSN:0925-8574
1872-6992
DOI:10.1016/j.ecoleng.2003.11.002