Sub-surface constructed wetland system as alternative treatment for effluent discharge from Atenda abattoir, Ogbomoso Southwestern Nigeria
by Oladipupo Seun Oladejo; Adewoye A. Olanipekun; Olayemi Samuel Diekola; Olasunkanmi Habib Olaniyan
International Journal of Environmental Engineering (IJEE), Vol. 10, No. 2, 2019

Abstract: Abattoir is a slaughter house constructed for killing and dissecting animals for human consumption. Location within residential neighbourhoods posed dangers on their immediate environment due to abattoir wastes and threat to available surface water bodies. The phyto-treatment of effluents from the Atenda abattoir in Ogbomoso, Western Nigeria was investigated. Two cells were planted with typha orientalis and sorghum arundinaceum. The unplanted cell served as control. Wetland cells were fed with wastewater from abattoir and treated effluents were collected for analyses during a retention period of ten days. Results showed typha orientalis has better contaminants removal ability (59.3%-99.9%) than sorghum arundinaceum (32.0%-98.65%), except in TDS where Sorghum has highest removal percentage (99.9%). Phytoremediation reduced 89.8% turbidity, 99.89% phosphate, and 99.5% of biochemical oxygen demand (BOD). Heavy metals in treated wastewaters were reduced within range of 83.5%-99.8% by typha orientalis, and 59.5%-84.9% by sorghum arundinaceum. The control cell has a competitive remediation efficiency with typha. Quality of treated effluent proved phytoremediation as effective technology for abattoir wastewater treatment using locally available macrophytes and eventual application for irrigation purpose.

Online publication date: Tue, 17-Sep-2019

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