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self-purification

[self-pyoo r-uh-fi-key-shuh n] /ˌsɛlf pyʊər ə fɪˈkeɪ ʃən/
noun
1.
a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
2.
purification of oneself.
Related forms
self-purifying, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for self-purification
  • Occurs in self-purification of water bodies and in activated sludge wastewater treatment.
  • For example, those bacteria which play an active role in stream self-purification do perform a useful function.
  • Besides, high sediment load and turbidity may essentially influence the aquatic ecosystem and hence self-purification processes.
  • The natural process of self-purification may be delayed significantly because of the lack of adequate oxygen resources.
  • Initial sedimentation and a biological self-purification take place in the reservoir.
  • The self-purification of streams and the relation- ship between chemical and biological tests.

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