Sewage treatment. Waste water being mechanically stirred during the aeration phase at a waste water treatment works. The purpose of aeration is to promote the growth of microorganisms which degrade the organic matter contained in the effluent. The microorganisms form a flocculant, or sludge, a proportion of which is removed and treated separately.

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TOP03228056

Source:

達志影像

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RM

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須由TPG 完整授權

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