Best Answer - Chosen by Voters
Paper factories area good answer. However, there are other factories which can waste much more water. Manufacturing plants that use a tempering process wastes water. Basically metal is heated to very high temperatures, then held a high temperatures (300 degrees) for a period of time. To keep the solution from boiling, very high concentrations of salts are added. When the process is complete, the metal part is dropped into a bath of running water to rapidly cool the metal and rinse of all the salt for the next steps in manufacturing.Volumes: A parts manufacturer producing small metal pieces can use 3-5 gallons per minute per machine to wash and cool the parts. A large scale manufacturer will then have 10-30 tempering machines operating 18-24 hours per day, 350-365 days per year. This water is then typically discharged to the storm drain or sewer, depending on the juristiction and the salts used. So, a range of %26quot;wasted water%26quot; is 11.3 to 78.9 MILLION gallons per year for one manufacturer. This is the reason why many manufacturing plants have their own groundwater pumps. Personal experience as a production supervisor and current environmental consultant helping industry solve waste-water issues. 71% 5 Votes
Other Answers (3)
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the factories that waste water r the paper factories
0% 0 Votes
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paper factories!! no joke, especially when they make colored paper cuz all the ink leaks out into the river. sucks doesnt it?
14% 1 Vote
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houses
14% 1 Vote
