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File:Chemical pumps at water purification plant.JPG

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English: Pumps used to add required amount of chemicals to the clear water at the water purification plant before the distribution. From left to right: sodium hypochlorite for disinfection, zinc orthophosphate as a corrosion inhibitor, sodium hydroxide for pH adjustment, and fluoride for tooth decay prevention.
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Author Z22

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25 June 2014

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current04:20, 6 July 2014Thumbnail for version as of 04:20, 6 July 20142,987 × 4,004 (5.98 MB)Z22User created page with UploadWizard

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