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Investigation of Reclaimed Effluent Water from a Constructed Wetland Domestic Sewage Treatment Plant as Additional Source of Raw Water at the University of Lagos, Nigeria
Authors: Adeniran A. E., Aina A. T. and Oshunrinade O. O
Number of views: 417
The University of Lagos, Nigeria (Unilag) mainly depends on internal boreholes and municipal supply (the Lagos State Water cooperation) as sources of water supply to the University. While a number of boreholes serve as the source of raw water to the University's water treatment plants, the municipal water is pumped directly for distribution. In addition to water shortages that do arise occasionally from these sources, the combined quantities of the internal and municipal water supply are far below the current water demand of the University. In this study, we examined the quality and quantity of water reclaimed from the constructed wetland based domestic sewage treatment plant (CWDSTP), which has been further processed through slow sand filters (SSF), as possible source of additional raw water for the University Water Treatment plant. The study revealed that the reclaimed water from the CWDSTP further processed with the SSF is good enough for use as addition source of raw water and conform with both FEPA and WHO standard for water to be further processed for drinking with parameters such as pH, Turbidity, total dissolved solids, colour, iron, nitrate and E. coli. The study also confirms that some additional 385m3/day can be reprocessed from the reclaimed water. The study concludes that the reclaimed water from CWDSTP and SSF can be recycled as additional source of raw water to reduce the existing gap between water demand and supply in the University.