期刊名称：Journal of Environmental & Analytical Toxicology
电子版ISSN：2161-0525
出版年度：2018
卷号：8
期号：5
页码：1-6
DOI：10.4172/2161-0525.1000588
语种：English
出版社：OMICS International
摘要：In this study, the performance of horizontal subsurface flow constructed wetland for the nutrients removal in rural domestic wastewater using different vegetation plants has been assessed with hydraulic loading rate 0.2 m·d-1 and hydraulic retention time 1.25 d. The system was built and operated for twelve weeks as a tertiary treatment after biological processes to improve the quality of effluents of rural sewage. Three different vegetation species i.e., Mustard, Celery and Watercress were selected and grown in the wetlands. The system exhibited high pollutants removal efficiencies as Mustard achieving 76.53%, 90.18%, 79.89%, 93.14% and 70.77%for TN, NO3-N, TP, NH4-N and TSS, while Celery showed 71.73%, 90.18%, 71.95%, 77.15% and 75.39% and Watercress presented removal efficiency as 73.41%, 93.64%, 80.95%, 86.69% and 81.91%, respectively. The concentrations of pollutants in all effluents of three different plants were lower than the Class 1A regulated values recommended by Chinese National Standards GB18918-2002. Horizontal subsurface flow constructed wetlands planted with Mustard, Celery and Watercress is a reasonable alternative method for the treatment of rural domestic wastewater.
