ORIGINAL RESEARCH
The Performance of Species Mixtures in Nitrogen and Phosphorus Removal at Different Hydraulic Retention Times
Hai Wang1,2, Cheng-Cai Huang2, Ying Ge1, Jian zhi Wu1, Jie Chang1
 
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1College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
2College of Life Sciences, Shaoxing University, Shaoxing 312000, PR China
 
Pol. J. Environ. Stud. 2014;23(3):917–922
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ABSTRACT
The effects of species compositions (two-species mixtures or monocultures) and hydraulic retention times (HRT; 1, 4, 8, 16, 24, 48 hours) on total nitrogen (TN) and total phosphorus (TP) removal from eutrophic water were studied in a constructed wetland. Two species mixtures showed higher efficiency to remove TN and TP than monocultures. Average removal efficiency of TN and TP was 49.6% and 34.0%, respectively. A longer HRT enhanced the removal efficiency of TN and TP, which suggested that species mixtures, HRT, and species mixtures × HRT interaction were useful for increasing the wastewater TN and TP removal.
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ISSN:1230-1485