Constructed wetland as an ecotechnological tool for pollution treatment for conservation of Ganga river.
Bioresour Technol
; 148: 535-41, 2013 Nov.
Article
em En
| MEDLINE
| ID: mdl-24080292
ABSTRACT
With aim to develop an efficient and ecofriendly approach for on-site treatment of sewage, a sub-surface flow constructed wetland (CW) has been developed by raising potential aquatic macrophytes; Typha latifolia, Phragmites australis, Colocasia esculenta, Polygonum hydropiper, Alternanthera sessilis and Pistia stratoites in gravel as medium. Sewage treatment potential of CW was evaluated by varying retention time at three different stages of plant growth and stabilization. After 6 months, monitoring of fully established CW indicated reduction of 90%, 65%, 78%, 84%, 76% and 86% of BOD, TSS, TDS, NO3-N, PO4-P and NH4-N, respectively in comparison to inlet after 36 h of retention time. Sewage treatment through CW also resulted in reduction of heavy metal contents. Thus, CW proved an effective method for treatment of wastewater and may be developed along river Ganga stretch as an alternative technology. Treated water may be drained into river to check further deterioration of Ganga water quality.
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Base de dados:
MEDLINE
Assunto principal:
Poluição da Água
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Biotecnologia
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Purificação da Água
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Conservação dos Recursos Naturais
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Rios
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Áreas Alagadas
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article