In-situ biochemical process monitoring and spatial variation of micro-environmental condition in constructed wetland
by H.S. Shashibhushana; Lokeshappa Bassapa; Nishchay Malhotra
International Journal of Environmental Engineering (IJEE), Vol. 10, No. 3, 2020

Abstract: The purpose of research was to study spatial micro-environmental condition variation in rhizosphere of uniform size root zone media of horizontal flow constructed wetland for pH, temperature, dissolved oxygen and oxidation reduction potential using in situ electrode based measurement system and evaluate oxidation reduction potential for process monitoring and design application. Micro-environmental conditions and their interactions within the microcosm planted with Vetiveria zizanioides was studied using design of experiment methodology. Spatial variation of oxidation reduction potential was found to be in range of −72 mV to −172 mV, pH in range of 7.0 to 7.8 and temperature variation from 25.6°C to 31.8°C within the microcosm. Statistical validation using general linear model indicates only organic loading is the significant factor contributing for variation of all micro-environmental parameters. The results highlight in situ measurement of Oxidation reduction potential can be used as a single representative parameter for monitoring and determine performance of constructed wetland.

Online publication date: Thu, 28-May-2020

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