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  2. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Two distinct and separate methods are employed in the sanitation of a swimming pool. The filtration system removes organic waste on a daily basis by using the sieve baskets inside the skimmer and circulation pump and the sand unit with a backwash facility for easy removal of organic waste from the water circulation.

  3. Pool skimmer - Wikipedia

    en.wikipedia.org/wiki/Pool_skimmer

    The skimmer is installed directly in the surface water suction system and also has the function of controlling the water level to prevent accidental overflows. [4] In the United States and Portugal, the use of skimmers in the construction of swimming pools is mandatory, regulated and standardized by competent bodies.

  4. Koi pond - Wikipedia

    en.wikipedia.org/wiki/Koi_pond

    The skimmer allows water to be drawn from the surface of the pond. It collects leaves, pollen, twigs, uneaten food and all other kinds of floating debris. The skimmer usually has a clean out basket that can be quickly emptied on a regular basis to allow the skimmer to run properly.

  5. Backwashing (water treatment) - Wikipedia

    en.wikipedia.org/wiki/Backwashing_(water_treatment)

    Diatomaceous earth filters are backwashed according to the proprietary arrangement of pumps, valves and filters associated with the filtration system. [2] Slow sand filters and self-cleaning screen filters employ mechanisms other than backwashing to remove trapped particles. To keep water treatment filters functional, they have to be cleaned ...

  6. Garden pond - Wikipedia

    en.wikipedia.org/wiki/Garden_pond

    This garden pond has two ponds separated by a waterfall with a one-foot drop; generally, the fish in the upper pond are smaller, and ones in the lower pond are larger. Ponds may be created by natural processes or by people; however, the origin of the hole in the ground makes little difference to the kind of wildlife that will be found in the pond.

  7. Stormwater detention vault - Wikipedia

    en.wikipedia.org/wiki/Stormwater_detention_vault

    In the latter case, this underground vault may be preferable to a surface detention pond if other uses are intended for the land (e.g. a pedestrian plaza or park). In other situations, a vault is used because installing a pond might pose other problems, such as attracting unwanted waterfowl or other animals.

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