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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. Hypomesus nipponensis - Wikipedia

    en.wikipedia.org/wiki/Hypomesus_nipponensis

    Hypomesus nipponensis ( Japanese smelt, in Japanese: wakasagi [2]) is a commercial food fish native to the lakes and estuaries of northern Honshu and Hokkaido, Japan, Korea, and Sakhalin, Khabarovsk Krai, and Primorsky Krai, Russia. [1] It has been introduced in other locations, including the San Francisco Delta of the United States.

  4. Evaporation pond - Wikipedia

    en.wikipedia.org/wiki/Evaporation_pond

    Evaporation ponds are artificial ponds with very large surface areas that are designed to efficiently evaporate water by sunlight and expose water to the ambient temperatures. [1] Evaporation ponds are inexpensive to design making it ideal for multiple purposes such as wastewater treatment processes, storage, and extraction of minerals.

  5. Algae scrubber - Wikipedia

    en.wikipedia.org/wiki/Algae_scrubber

    Concepts. An algae scrubber filters water by moving water rapidly over a rough, highly illuminated surface, which causes algae to start growing in large amounts. As the algae grow, they consume nutrients such as nitrate, phosphate, nitrite, ammonia, ammonium and even metals such as copper from the water. [2]

  6. Treatment pond - Wikipedia

    en.wikipedia.org/wiki/Treatment_pond

    Treatment pond. A treatment pond is intended to provide wastewater treatment to achieve a certain effluent quality. Ponds are depressions holding water confined by earthen structures. Kinds of treatment pond include: Aerated lagoons rely upon mechanical aerators providing oxygen to reduce the organic content measured as biochemical oxygen ...

  7. Cleaner fish - Wikipedia

    en.wikipedia.org/wiki/Cleaner_fish

    Cleaner fish. Cleaner fish are fish that show a specialist feeding strategy [1] by providing a service to other species, referred to as clients, [2] by removing dead skin, ectoparasites, and infected tissue from the surface or gill chambers. [2] This example of cleaning symbiosis represents mutualism and cooperation behaviour, [3] an ecological ...