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- W2183616456 abstract "The discharge of untreated abattoir waste into rivers and streams can have adverse environmental consequences on water quality. This study was carried out to determine the spatial trends in the physicochemical and microbiological quality of the Ogbogoro stream receiving raw abattoir waste. Water samples were collected over a period of 12 weeks from four sites (upstream, effluent discharge point, mid stream and downstream) in the stream to reflect the spatial variations in concentrations of water quality parameters. Parameters such as microbial counts, biological oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen (DO), pH, temperature, total suspended solid (TSS), turbidity, total alkalinity, nitrate, sulphate, phosphate and odour were analyzed using standard procedures. Results obtained showed that the stream was characterized by high coli form counts due to the discharge of abattoir waste into the stream especially downstream of effluent discharge point. Water samples from downstream stations also showed higher concentrations of TSS, turbidity, odour, nitrate, sulphate and phosphate when compared to the upstream station while, BOD and COD values were lower at these stations than in the upstream station. Decrease in pH and total alkalinity was obtained downstream after the effluent discharge point and this was attributed to production of organic acids during breakdown of organic matter from the abattoir waste. BOD and faecal coli forms showed a positive correlation r = 0.780774 significant at p < 0.05 at the effluent discharge point, suggesting microbial contamination as a result of organic matter input. The mean value ranges of most of the parameters analysed such as: BOD (8.20-13.30); COD (32.0-49.0); nitrate (0.10-2.60); sulphate (0.39-1.84) and phosphate (0.01-0.26) were lower than FEPA and WHO maximum permissible limits for rivers and streams. Nevertheless, the current microbiological quality status of the Ogbogoro stream as a result of abattoir waste discharge poses an environmental and health hazard to those who use it for recreational and domestic purposes. Based on above mentioned results, it could be recommended that adequate treatment of the stream water be carried out before its usage for domestic or agricultural purposes in addition to strict monitoring of abattoir waste disposal into water bodies by relevant agencies." @default.
- W2183616456 created "2016-06-24" @default.
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- W2183616456 date "2013-01-01" @default.
- W2183616456 modified "2023-09-27" @default.
- W2183616456 title "A Spatial Assessment of the Microbiological and Physicochemical Quality of a Stream Receiving Raw Abattoir Waste" @default.
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