The effect of Oja-titun market effluent on the chemical quality of receiving OPA reservoir in Ile-Ife, Nigeria

Eludoyin, Adebayo Oluwole; Ofoezie, Ifeanyi Emmanuel; Ogunkoya, O. O.

doi:10.1016/j.jenvman.2004.05.005

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…The overall average recorded BOD 5 concentration in the receiving stream and effluents sources are higher than the 50 mgl -1 tolerance level stipulated by FEPA for effluents to be discharged into the surface water and this is very unfortunate since the continuous discharge of the effluent has seriously impacted the receiving stream and this may have negative effects on the quality of the freshwater and can as well cause harm to the aquatic life especially downstream (Ogunfowokan et al, 2005). Eludoyin et al (2004) arrived at a similar conclusion studying the effect of Oja-titun market effluent on the chemical quality of the receiving Opa reservoir in Ile-Ife, Nigeria, that the discharge of effluents with high BOD loading into fresh water bodies may give rise to organic pollution. Table 5 shows the comparison of the overall mean concentrations of all the investigated physico-chemical parameters in both the unimpacted and impacted stream reach of the receiving stream The difference between the water quality of unimpacted and impacted receiving water bodies was significant (P ≤ 0.05) for almost the investigated parameters.…”

Section: Resultsmentioning

confidence: 99%

The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria

Ojo¹,

Adeniyi²

2012

JSD

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In order to contribute to the understanding of the impact of wastewater discharges from a Hospital in south-western Nigeria on the receiving water bodies, the physico-chemical qualities of the two wastewater point sources from the Obafemi Awolowo University Teaching Hospitals Complex (OAUTHC) Ile-Ife were characterized, and their impacts on the water quality of the receiving Elekete stream were assessed. Eight sampling stations were selected for the study: three, were located each on the unimpacted and impacted sections of the receiving Elekete stream while one each was located on the two wastewater point sources from OAUTHC. The physico-chemical parameters investigated include: oxygen parameters, major cations, major anions, nutrient compounds, physical parameters (temperature, turbidity, solids) as well as pH and conductivity. Samples were collected from each sampling station fortnightly for nine months and analysed using standardised laboratory methods. The results were analysed using relevant statistical methods. The result showed significant difference (P < 0.05) for all parameters between the impacted and unimpacted sections of effluent receiving stream. SO 4 2-, Total Organic Carbon, NH 4 + , PO 4 3-, and BOD 5 were more than three times higher in the impacted section than in the unimpacted section while sample colour, turbidity, total suspended solids, total dissolved solids, total solids, conductivity, alkalinity, acidity, Ca 2+ , Mg 2+ , Na + , K + , Cl -, HCO 3 -, NO 3 -, and NO 2 -were about two times higher in the impacted section of the receiving stream than in the unimpacted section. The overall mean concentrations of 293 mg l -1 and 270 mg l -1 BOD 5 in the two effluent streams indicate the medium/ strong strength of the wastewater discharges from OAUTHC. This study showed that the wastewater discharge from the (OAUTHC) Ile-Ife has significant impact on the water quality of the receiving streams. The implications are discussed.

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Section: Resultsmentioning

confidence: 99%

The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria

Ojo¹,

Adeniyi²

2012

JSD

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“…The values of NO 3 and PO4 3at the irrigated area and downstream segments of the river appear to be higher when compared with the range of 0.05-16.03 mg l -1 of NO 3 and 2.0-22.1 mg l -1 PO 4 3reported by Ajibade (2004), Ifabiyi (1997) and Ogunkoya and Adejuwon (1990) for rivers in southwestern Nigeria. But these are not as high as 5.0-98.2 mg l -1 reported by Eludoyin et al (2004) for Oja-Titun market and tributaries streams draining to the Opa River and Reservoir in Ile-Ife. However, the values obtained in this study are in accordance with concentration values of greater than 10 ml -1 recorded in streams during storm events in the UK after a few days of application of chemical fertilizer (Johnson et al, 1994).…”

Section: Discussionmentioning

confidence: 61%

Effects of irrigation on the physico-chemical quality of water in irrigated areas

Adediji

Adewumi

Ologunorisa

2011

Progress in Physical Geography: Earth and Environment

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High demand for water is driving potentially unsustainable practices and competition for water resources between various sectors in developing areas. As a result of improved quality of life and population growth, increase in demand for fresh water is anticipated in all African countries in all sectors, over the next 10 years. This study examines the effects of dry season irrigation farming (fadama) on the physical and chemical quality of the River Osin which receives both surface and subsurface flow from irrigated areas in the Upper Osin Catchment, Kwara State, Nigeria. A total of 90 samples were obtained from Upstream (UPS), Irrigated area (IRG) and Downstream (DNS) segments of the river in the dry and rainy seasons. Water samples were analysed for pH, conductivity, total dissolved solids (TDS), suspended solids, dissolved organic matter (DOM), pesticides (ionic basic type), Na+, K+, Mg2+,Cl-, NO3-, PO43-, Ca2+ and HCO3-. The results indicate that values of agricultural pollutants such as pesticides (CuSO4), NO3- and PO43- were significantly higher at IRG than at UPS, and decreased slightly at DNS, while all other anions and cations except DOM reached peak values at DNS. Agricultural pollutants (NO3-, PO43- and pesticides) contributed significantly to poor water quality observed at IRG and DNS segments but the values are within acceptable tolerance range at UPS. The findings further indicate that irrigation practice degrades the quality of water at IRG and DNS segments. As a result, a holistic approach to agriculture and water resource management is recommended to ensure sustainable water resources development in the catchment.

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“…The water quality from these sources of water is usually known to be low, except when purified because of the influence of land-uses around them (e.g. Eludoyin et al, 2004;Eludoyin et al, 2008). Eludoyin et al (2004) noted that polluted water (with excess amounts of sulphates, nitrates or any toxic elements) can cause disorders known as catharsis, dehydration and gastro-intestinal irritation in humans.…”

Section: Discussionmentioning

confidence: 99%

“…Eludoyin et al, 2004;Eludoyin et al, 2008). Eludoyin et al (2004) noted that polluted water (with excess amounts of sulphates, nitrates or any toxic elements) can cause disorders known as catharsis, dehydration and gastro-intestinal irritation in humans. Water with excess concentrations of toxic substances such as lead ion can inhibit the formation of blood cells and also cause brain damage in children (WHO, 1972;Townsend, 1991).…”

Section: Discussionmentioning

confidence: 99%

Population dynamics and infrastructure: meeting the millennium development goals in Ondo State, Nigeria

Adebimpe

2013

APS

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The effect of Oja-titun market effluent on the chemical quality of receiving OPA reservoir in Ile-Ife, Nigeria

Cited by 13 publications

References 5 publications

The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria

The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria

Effects of irrigation on the physico-chemical quality of water in irrigated areas

Population dynamics and infrastructure: meeting the millennium development goals in Ondo State, Nigeria

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