工业废水排放对尼日利亚卡杜纳州里多河一些理化参数和水质指标的下游影响

A. Butu, C. Emeribe, I. O. Muoka, O. F. Emeribe, E. Ogbomida
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引用次数: 3

摘要

研究了工业废水排放对卡杜纳州南卡杜纳里多河水质的影响。这些包括北面条排放点,卡杜纳炼油厂排放点,以及里多河下游的点。采样点之间的间隔为100m,以实现采样点的均匀表示。研究的理化参数包括pH、游离溶解二氧化碳、碱度、硬度、钠、电导率、浊度、总悬浮固体、总磷酸盐、硝酸盐、硫酸盐和溶解氧。污水排放点以及研究区下游大多数地区的平均浊度、总悬浮固体和总磷酸盐水平普遍高于饮用水的允许限度。在控制点与污水排放点之间,以及控制点与研究区下游地区之间,所调查参数的浓度水平存在统计学差异。然而,在排放点和研究区下游地区之间观察到的浓度水平是相似的,这表明下游受到上游污水排放的污染。尽管如此,从出水点和丽都河下游地区的理化参数水质指标来看,丽都河出水点和丽都河下游地区的水质分别为良好至优良。这可能是由于降雨稀释的影响。因此,建议炼油厂和北方面条的废水排放在排放到研究区域之前进行适当处理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Downstream Effects of Industrial Effluents Discharge on Some Physicochemical Parameters and Water Quality Index of River Rido, Kaduna State, Nigeria
The effects of industrial effluent discharge on the water quality of River Rido in Kaduna South, Kaduna State, were examined. These include the Northern Noodles discharge point, the Kaduna Refinery discharge point, and points downstream of the River Rido. An interval of 100m between sampling points was established to achieve an even representation of sampling points. The physico-chemical parameters investigated include pH, free dissolved carbon dioxide, alkalinity, hardness, sodium, electrical conductivity, Turbidity, total suspended solids, total phosphate, nitrate, sulfate, and dissolved oxygen. Mean levels of turbidity Total suspended solids and total phosphate at effluent discharge points, as well as in most areas downstream of the study area, were generally above permissible limits for drinking water. Statistical differences were observed in the concentration levels of investigated parameters between the control point and effluent discharge points, as well as between the control point and areas downstream of the study area. However, concentration levels were observed to be similar between discharge points and areas downstream of the study area, an indication of contamination downstream by effluent discharge upstream. Notwithstanding, the water quality index of physico-chemical parameters at both effluent discharge points and areas downstream of River Rido shows that the quality of the river ranged from good to excellent at effluent discharge points and areas downstream of River Rido, respectively. This might be attributed to the effect of dilution from rainfall. It is therefore recommended that wastewater effluent from the refinery and northern noodles be properly treated before discharged into the study area.
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