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  2. Waste stabilization pond - Wikipedia

    en.wikipedia.org/wiki/Waste_stabilization_pond

    The system may consist of a single pond or several ponds in a series, each pond playing a different role in the removal of pollutants. After treatment, the effluent may be returned to surface water or reused as irrigation water (or reclaimed water ) if the effluent meets the required effluent standards (e.g. sufficiently low levels of pathogens ).

  3. Facultative lagoon - Wikipedia

    en.wikipedia.org/wiki/Facultative_lagoon

    Facultative lagoon (polishing pond) providing tertiary treatment after a constructed wetland in Hamburg-Allermöhe, Germany. Overflow from the facultative lagoon may be routed through one or more polishing ponds supporting lower populations of anaerobic micro-organisms and a higher proportion of aerobic organisms adapted to survival in lower concentrations of organic material.

  4. Pond - Wikipedia

    en.wikipedia.org/wiki/Pond

    The technical distinction between a pond and a lake has not been universally standardized. Limnologists and freshwater biologists have proposed formal definitions for pond, in part to include 'bodies of water where light penetrates to the bottom of the waterbody', 'bodies of water shallow enough for rooted water plants to grow throughout', and 'bodies of water which lack wave action on the ...

  5. Black sludge, invasive seaweed, toxic algae: Cape Cod pond ...

    www.aol.com/black-sludge-invasive-seaweed-toxic...

    According to the organization, the 139 ponds that had enough data represent just 16 percent of the Cape's 890 freshwater ponds, "indicating that there is an ongoing shortage of recent water ...

  6. Ancient Hawaiian aquaculture - Wikipedia

    en.wikipedia.org/wiki/Ancient_Hawaiian_aquaculture

    [5] These ponds were constructed by a seawall, usually made of coral or lava rocks, with lengths of these walls ranging from 46 to 1,920 meters (151 to 6,299 ft). Coralline algae was gathered and used as a natural cement to hold and strengthen the walls. These ponds were very diverse, usually containing about 22 species of marine life.

  7. Settling basin - Wikipedia

    en.wikipedia.org/wiki/Settling_basin

    A settling basin, settling pond or decant pond is an earthen or concrete structure using sedimentation to remove settleable matter and turbidity from wastewater. The basins are used to control water pollution in diverse industries such as agriculture , [ 1 ] aquaculture , [ 2 ] and mining .

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