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Cement industry consumes a big amount of water, which is used in both of the industrial processing and in the cooling system. In this paper, an industrial surveying was carried out to evaluate the condition of industrial wastewater produced in Hammam Al-Alil cement factory and to investigate the ability to reuse the cooling water, which was used one time in this factory, in other locations. The results of the study showed that industrial wastewater contain a high concentration of oil and grease (reached to 1800 mg/L) which caused a great concentration of COD (up to 10000 mg/L) in raw samples. The separation of the oil and grease was very effective in reducing the pollutants concentration. After separation, the COD value of the samples was about 50 mg/L. and the values of (SS) and the oil and grease concentration were about 110 and 80 mg/L respectively. The result of the study also showed that the cooling water can be reused in both of material mill and in the clay washing units. Both the quantity and quality of the cooling water are compatible to be reused in these units after separating the oil layer. An detention time of not less than 60 min. was necessary to adjust the SS concentration to be compatible with Iraqi water sources standards.

Study of the Nature of Industrial Effluent From Hammam Al-Alil Cement Factory And Evaluate Its Reuse Ability