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Study on treatment of electroplating wastewater using constructed wetland

Journal article published in 2015 by J. S. Sudarsan, V. T. Deeptha, D. Maurya, M. Goel, K. Ravi Kumar, A. Das
This paper is available in a repository.
This paper is available in a repository.

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Preprint: policy unknown
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Postprint: policy unknown
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Abstract

Electroplating waste with very high concentration of metals and COD has always been posing a great challenge for treatment in an environmental-friendly way. The present study attempts at use of constructed wetland in treating electroplating waste. Three types of wetland setups were used in the study, namely: single wetland cell, two-wetland cells in cascade and single wetland cell with adsorbent bed for varying hydraulic detention times (2 days, 4 days and 6 days) in batch mode. The percentage removal of all metals was found to be more than 80%. The effect of varying detention time was not found to improve the removal efficiency in all the three cells varying modes of treatment, thus indicating 2 days to be optimum detention time. The mode of set-up of the wetland cells (i.e., with cascading and with augmented adsorbents) was not found to be statistically significant compared to treatment using single-isolated wetland cell unit, based on ANOVA test for two-factors, i.e., chemical speciation and wetland cell-setup types.