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Sewage Water Treatment in Constructed Wetlands With Vetiver Grass
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Author(s): Dhanya Gopalakrishnan Nair (University of Kerala, India), Vinod Gopal Venugopal (University of Kerala, India)and Jaya Divakaran Sarasamma (University of Kerala, India)
Copyright: 2022
Pages: 20
Source title:
Handbook of Research on Water Sciences and Society
Source Author(s)/Editor(s): Ashok Vaseashta (International Clean Water Institute, USA & Transylvania University of Brasov, Romania & Academy of Sciences of Moldova, Moldova), Gheorghe Duca (Institute of Chemistry, Moldova State University, Moldova & Academy of Science of Moldova and Romanian Academy, Romania.)and Sergey Travin (Federal Research Center for Chemical Physics and N. N. Semenov of the Russian Academy of Sciences, Russia)
DOI: 10.4018/978-1-7998-7356-3.ch018
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Abstract
Untreated sewage is the main reason for soil and water pollution. Constructed wetland technology is an emerging and acceptable wastewater treatment method as it can effectively remove almost all types of pollutants without harming the environment. The aim of this study was to find the effectiveness of constructed wetland technology using the vetiver plants (vetiveria zizanioides l. Nash) in sewage treatment. The vetiver plants were planted in the constructed wetland. After 90 days, the test groups were treated with 250ml of sewage on alternate days and are allowed to grow for further 15 days. After the experiment, the treated sewage from the tank was collected and the changes in physico-chemical characteristics were examined. The results show that more than 65% of the total pollution load including heavy metals in the sewage was eliminated within 15 days of treatment in the constructed wetland. So, the vetiver-constructed wetland can be considered as an effective, low-cost, eco-friendly technology for sewage treatment.
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