Minimization of water use and wastewater contaminant load |
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Authors: | R. Sans, J. M. Ribo, D. Alvarez, C. Forn , M. D. Puig,F. Puig |
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Affiliation: | R. Sans, J. M. Ribo, D. Alvarez, C. Forné, M. D. Puig,F. Puig |
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Abstract: | This communication describes a project concerning the minimization of water use and wastewater contaminant load in an industrial setting. The location was a plant manufacturing cast aluminum parts for the automotive industry. The water used for industrial purposes was some 16 000 m3/yr with COD values sometimes higher than 5000 mg O2/l. After a preliminary assessment, a global reduction in industrial water consumption of 33%, by means of re-circulation of the aqueous solution used for de-molding was achieved, implying a 95% reduction in de-molding solution. To minimize water use even further, recommendations to the company included a revision of the refrigeration closed-circuit and a better control of water used for general services. |
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Keywords: | Wastewater reutilization Water savings Chemical savings Contaminant minimization |
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