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【Daily Question】Utilities - Water Supply and Drainage - 20190325

2019-03-25View Original

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Multiple choice: A mechanically stirred clarifier is a structure that combines mixing, flocculation, and sludge-water separation, and it consists of the I and II flocculation chambers, a guide chamber, and a separation chamber. Which of the following statements about the main functions of the respective chambers is incorrect? A The first flocculation chamber facilitates the mixing of coagulant, raw water, and recycled sludge, as well as contact flocculation. B The second flocculation chamber is used for contact flocculation. C The guide chamber serves to eliminate the swirling effect of water flow caused by the lifting impeller. D The separation chamber carries out centrifugal separation. Answer: CD

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