Investigation of physicochemical parameters of wastewater generated in an industry located in Otta, Ogun State, Nigeria

O. Ayodele, S. S. Asaolu, M. A. Azeez, M.O. Oseni
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Abstract

Discharge of untreated effluents from Industries into the environment has been a major source of environmental pollution. This study focused on the physicochemical analyses of effluent generated from an aluminum producing company in Otta, Ogun State, Nigeria. Different physicochemical parameters as well as heavy metals were determined using various standard analytical methods, Flame Photometer, and Atomic Absorption Spectrophotometer (Spectra AA Varian 400 plus). The pH value was 12.04, TS (162.96 mg/L), TDS (152.60 mg/L), TSS (10.36 mg/L), total hardness (95.6 mg/L), total alkalinity (58.47 mg/L), DO (3.85 mg/L), BOD (5.35 mg/L), COD (7.85 mg/L), and chloride content (13.54 mg/L). The mineral analysis showed that the concentrations of investigated metals ranged from 0.01 mg/L (Cd) which was the lowest value to 21.70 mg/L (Na) which was the highest value. It was observed that many parameters investigated were outside the stipulated standards enacted by WHO and FEPA.
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尼日利亚奥贡州奥塔市一家企业产生的废水理化参数调查
未经处理的工业废水排放到环境中一直是环境污染的主要来源。本研究的重点是对尼日利亚奥贡州奥塔市一家铝生产企业产生的污水进行理化分析。使用各种标准分析方法、火焰光度计和原子吸收分光光度计(Spectra AA Varian 400 plus)测定了不同的理化参数和重金属含量。pH 值为 12.04、TS(162.96 mg/L)、TDS(152.60 mg/L)、TSS(10.36 mg/L)、总硬度(95.6 mg/L)、总碱度(58.47 mg/L)、溶解氧(3.85 mg/L)、生化需氧量(5.35 mg/L)、化学需氧量(7.85 mg/L)和氯化物含量(13.54 mg/L)。矿物质分析表明,所调查的金属浓度范围从最低值 0.01 毫克/升(镉)到最高值 21.70 毫克/升(纳)不等。据观察,所调查的许多参数都超出了世界卫生组织和联邦环保局颁布的规定标准。
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