But since organic substances

15.05.2017 | комментариев 0 | раздел: Стены

With the mechanical method of cleaning, insoluble pollution of drains are subject to defending and filtration, but since organic substances present in wastewater remain unchanged, such cleaning is incomplete. Wastewater purified in this way does not correspond to sanitary and epidemiological standards, and this method can only be used as a preliminary step before biological cleaning.

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