IntroductionIndustrialization is seen as a motor behind many of the processes usually termed "social transformation" and "modernization". Paint industry is one of the industries that cause the water pollution. Wastewater is generated primarily due to cleaning operations of mixers, reactors, blenders, packing machines and floors. Heavy metals have been found to be highly toxic especially when their natural concentrations are exceeded. At normal concentration, they promote the functions of the enzymes but could lead to a lot of adverse metabolic reaction when their concentration rises beyond tolerance limit. The untreated effluents contain a lot of pollutants that are harmful to human beings when they exceed the permissible limits. The Zemilli Paint Factory in Ethiopia produces maximum of 36,000 liters of paint per day and as a result it generates about 500 liters of liquid waste on average per day. This massive quantity of untreated effluent is disposed to the river side and cause considerable load on the water courses leading to widespread damage to aquatic life and to the environment. The problem is more severe in Addis Ababa, where most (More than 40% of large and medium scale manufacturing industries are located. Addis Ababa, like most developing cities, lacks the infrastructure, financial resources, and institutional capacity necessary to effectively manage industrial wastes and adequately control industrial pollution [1]. Paint manufacturing sector in Addis Ababa localized in different part of the sub city, most of them were concentrated in the residential and commercial area such as Nifas silk lafto sub city and Akaki Kality sub city. However, some of them are found in regional state. They have no proper waste discharging mechanism and no modern treatment plant which can handle their effluents waste accordingly.
Materials and Methods
Study areaThis study was employ on the city of Addis Ababa. Addis Ababa
AbstractPaint industry is one of the industries that cause the water pollution by generating Wastewater primarily due to cleaning operations of mixers, reactors, blenders, packing machines and floors. The present research work deals with the study of some of the important physico-chemical and heavy metal parameters of paint industrial waste water effluents which was aimed at the analysis of the untreated effluents from six paint factories in Addis Ababa and the surrounding area. Analysis physico-chemical and heavy metal parameters of selected paint factories samples in Kadisco (KA), Zemilli (ZE), Rainbow (RA), Gastor solar (GA), Nifas silk (NI) and Modern building industry (MBI) were performed to investigate the concentration of status of the parameter. In this study, like; physico-chemical and heavy metal parameters pH, EC, TDS, TSS, COD, Cd, Cr, Pb, and Zn of the nine wastewater samples were analyzed using, Dana multi-meter, Jenway Model 4510 Conductivity/Temp Meter (451 001), Gravimetric, Volumetric, Colorimetric, flame emission photometry, and Atomic Absorption spectrometry (AAS)analyses methods. In t...
