Municipal solid wastes disposal in non-engineered landfills release deleterious chemicals that degrade water quality in a developing city, southeastern Nigeria

Journal of applied sciences research

article

Gregory Sikakwe¹  God’swill Eyong²  Bridget Igwe¹ 

[1] Department of Physics/Geology/Geophysics Faculty of Science Alex Ekwueme Federal University;Department of Geology Faculty of Science University of Calabar, P.M. B 1115 Calabar Nigeria

关键词: Open dumpsites;    physicochemical parameters;    heavy metals;    municipal solid waste;    non-engineered landfill;    water pollution;   

DOI  :  10.22587/jasr.2020.16.5.2

学科分类：社会科学、人文和艺术（综合）

来源: AENSI

【 摘 要 】

This research analyzed the degradation of water quality due to municipal solid waste disposal in open dumpsites in a developing city, southeastern Nigeria. Ten water samples collected from boreholes, stream channels and hand-dug wells were analysed to assess the level of water pollution. Physical parameters such as acidity (pH), redox potential (Eh), temperature, turbidity, total dissolved solids and conductivity, were measured insitu with portable kits. Chemical parameters such as total hardness, carbonate, biological oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids, conductivity, sulphate (SO4), nitrate(NO3), bicarbonate(HCO3), BOD, COD and chloride were analysed by standard procedures. Flame test and atomic absorption spectrophotometer (AAS) were used to analyse for potassium (K), sodium (Na), calcium (Ca), magnesium (Mg), aluminium (Al), iron (Fe) and manganese (Mn) concentrations. World Health Organization (WHO 2011), United States Environmental protection Agency (USEPA 2006) and Nigerian Standards Department of Water Quality (NSDWQ 2007) stipulated standard values for potable water. Mean concentrations of BOD (199.0 mg/L), COD(507.6 mg/L), turbidity (36.6 mg/L), total hardness (300 mg/L), pH (6.3), sulphate (363.76 mg/L), chloride (283 mg/L), sodium (6.7 mg/L), and manganese(0.5 mg/L) exceeded their standard values. These indicated water pollution due to leachates from solid wastes dumpsites. This study is useful in solid waste pollution studies both in Nigeria and other parts of the world.

【 授权许可】

Unknown