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Wastewater Treatment Potential through Constructed Wetland System

P. Sasirekha, G. Soundharya, I. Sarojinivelthai, K. Rubeena

Abstract


Wastewater discharge is one of the most serious threats to the ecosystem. The most immediate impact of wastewater discharge on the environment is that contamination and devastation of natural habitats and the wildlife that live in those home ground which leads the entire food chain to ruin. A large number of technologies have been applied for wastewater treatment but most of them are expensive to erect and run. An alternate to conventional ways of wastewater treatment by utilizing natural process is, constructed wetland system. Construction of wetland system is a self-regulating mechanism to purify wastewater. This system involves an interaction between the bacterial metabolism, plant uptake, soil matrix and accumulation for pollutant removal. Vegetation such as Alternanthera sessilis and Canna indica are the dominant feature in this system and act as an important biotic factor in treatment process. They remove nitrogenous compounds, phosphorous, heavy metals and decrease the amount of BOD and COD. The resultant clean water is used for gardening, fencing, etc… based on their characteristic values. The characteristics of wastewater are recorded, analyzed and compared with their standards and has concluded by saying which plant treats more amount of wastewater.


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References


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