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  2. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

  3. Water dispenser - Wikipedia

    en.wikipedia.org/wiki/Water_dispenser

    Water dispenser. A water dispenser, sometimes referred to as a water cooler (if used for cooling only), is a machine that dispenses and often also cools or heats up water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing. A drain line is also provided from the water cooler into the sewer system.

  4. Refrigerator - Wikipedia

    en.wikipedia.org/wiki/Refrigerator

    A refrigerator maintains a temperature a few degrees above the freezing point of water. The optimal temperature range for perishable food storage is 3 to 5 °C (37 to 41 °F). [3] A freezer is a specialized refrigerator, or portion of a refrigerator, that maintains its contents’ temperature below the freezing point of water. [4]

  5. Microfiltration - Wikipedia

    en.wikipedia.org/wiki/Microfiltration

    Microfiltration. Microfiltration is a type of physical filtration process where a contaminated fluid is passed through a special pore-sized membrane filter to separate microorganisms and suspended particles from process liquid. It is commonly used in conjunction with various other separation processes such as ultrafiltration and reverse osmosis ...

  6. Washing machine - Wikipedia

    en.wikipedia.org/wiki/Washing_machine

    Washing machines including water jets (also known as water sprays, jet sprays [39] and water showers) and steam nozzles [40] that claim to sanitize clothes, help reduce washing times, and remove soil from the clothes. [41] Water jets get their water from the bottom of the drum, thus recirculating the water in the washer. [42] [43] [44]

  7. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Reverse osmosis ( RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions. RO can remove dissolved or suspended chemical species as well as biological substances (principally bacteria ), and is used ...

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