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Treatment performance and microorganism community structure of integrated vertical-flow constructed wetland plots for domestic wastewater.
- Source :
- Environmental Science & Pollution Research; Jun2013, Vol. 20 Issue 6, p3789-3798, 10p
- Publication Year :
- 2013
-
Abstract
- In order to investigate the treatment performance and microorganism mechanism of IVCW for domestic wastewater in central of China, two parallel pilot-scale IVCW systems were built to evaluate purification efficiencies, microbial community structure and enzyme activities. The results showed that mean removal efficiencies were 81.03 % for COD, 51.66 % for total nitrogen (TN), 42.50 % for NH-N, and 68.01 % for TP. Significant positive correlations between nitrate reductase activities and TN and NH-N removal efficiencies, along with a significant correlation between substrate enzyme activity and operation time, were observed. Redundancy analysis demonstrated gram-negative bacteria were mainly responsible for urease and phosphatase activities, and also played a major role in dehydrogenase and nitrate reductase activities. Meanwhile, anaerobic bacteria, gram-negative bacteria, and saturated FA groups, gram-positive bacteria exhibited good correlations with the removal of COD ( p = 0.388), N ( p = 0.236), and TP ( p = 0.074), respectively. The IVCW system can be used to treat domestic wastewater effectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 20
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 87454117
- Full Text :
- https://doi.org/10.1007/s11356-012-1307-0