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首页> 外文期刊>Journal of Sustainable Development >The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria
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The Impacts of Hospital Effluent Discharges on the Physico-chemical Water Quality of a Receiving Stream at Ile-Ife, Southwestern Nigeria

机译：尼日利亚西南部Ile-Ife医院污水排放对接收流的物理化学水质的影响

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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. SO42-, Total Organic Carbon, NH4+, PO43-, and BOD5 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, Ca2+, Mg2+, Na+, K+, Cl-, HCO3-, NO3-, and NO2- 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 BOD5 ? 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.
机译：为了有助于理解尼日利亚西南部一家医院的废水排放对接收水体的影响，奥巴费米·阿沃罗沃大学教学医院综合大楼（OAUTHC）的两个废水点源的理化性质–对特点进行了评估，并评估了它们对接收埃莱克特河水质的影响。为该研究选择了八个采样站：三个采样站分别位于接收埃莱克特河未受影响和受影响的部分，而每个采样站位于OAUTHC的两个废水点源上。研究的物理化学参数包括：氧气参数，主要阳离子，主要阴离子，营养化合物，物理参数（温度，浊度，固体）以及pH和电导率。每两周从每个采样站收集样品，共进行9个月，并使用标准化实验室方法进行分析。使用相关的统计方法对结果进行了分析。结果表明，污水接收流受影响和未受影响部分之间的所有参数均存在显着差异（P <0.05）。受影响区域中的SO42-，总有机碳，NH4 +，PO43-和BOD5高于未受影响区域的三倍以上，而样品的颜色，浊度，总悬浮固体，总溶解固体，总固体，电导率，碱度，酸度，Ca2 +，Mg2 +，Na +，K +，Cl-，HCO3-，NO3-和NO2-在接收物流的受影响区域中比未受影响区域高大约两倍。总体平均浓度为293 mg l-1和270 mg l-1 BOD5？两条废水流中的“中”表示从OAUTHC排出的废水具有中等/强强度。这项研究表明，（OAUTHC）Ile-Ife的废水排放对接收流的水质有重大影响。讨论了含义。

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