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ENVIS Technical Report 124, October 2017 |
CONSTRUCTED WETLANDS FOR TERTIARY TREATMENT OF WASTEWATER |
Constructed wetlands are artificial wastewater treatment systems consisting of shallow (usually less than 1 m deep) ponds or channels which have been planted with aquatic plants, and which rely upon natural microbial, biological, physical and chemical processes with an ability to uptake nutrients from wastewater
- Tertiary treatment of wastewater entails the removal of nutrients (inorganic compounds such as phosphorus and nitrogen) through macrophytes and virtually all suspended and organic matter from waste water
- Aquatic macrophytes are the vascular plants that are normally found growing in wetlands.
- Macrophytes are of considerable ecological and economic importance as they help in the uptake of nutrients and hence help in maintaining the chemical integrity of the respective ecosystem.
- They assimilate nutrients directly into their tissues. Due to these they were used to solve eutrophic problems of freshwater bodies and to remove pollutants.
- Aquatic macrophytes aid in bioremediation and hence wetlands are aptly known as ‘kidneys of the landscape’.
- They also respond to changes in water quality and have been used as indicators of pollution and are known as ‘bio-indicators’
- Aquatic plants mobilize mineral elements from the bottom sediments and provide shelter to aquatic macro invertebrates and fishes.
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3 types of macrophytes in Bangalore wetlands – Submerged, Emergent and Floating macrophytes
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Dr. T.V. Ramachandra
Centre for Sustainable Technologies, Centre for infrastructure, Sustainable Transportation and Urban Planning (CiSTUP), Energy & Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560 012, INDIA.
E-mail : tvr@iisc.ac.in
Tel: 91-080-22933099/23600985,
Fax: 91-080-23601428/23600085
Web: http://ces.iisc.ernet.in/energy
Sudarshan P. Bhat Energy & Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560 012, INDIA.
E-mail: sudarshanb@iisc.ac.in
Vinay S.Energy & Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, Bangalore – 560 012, INDIA.
E-mail: svinay@iisc.ac.in
Citation:Ramachandra T V, Sudarshan Bhat and Vinay S, 2017. Constructed Wetlands for Tertiary treatment of Wastewater, ENVIS Technical Report 124, Energy & Wetlands Research Group, CES, Indian Institute of Science, Bangalore 560012
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Dr. T.V. Ramachandra
Energy & Wetlands Research Group,
Centre for Ecological Sciences, TE 15, New Biology Building, Third Floor, E Wing, [Near D Gate], Indian Institute of Science, Bangalore – 560 012, INDIA.
Tel : 91-80-22933099 / 22933503-extn 107
Fax : 91-80-23601428 / 23600085 / 23600683 [CES-TVR]
E-mail : tvr@iisc.ac.in, energy@ces.iisc.ernet.in,
Web : http://wgbis.ces.iisc.ernet.in/energy |
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