DEVICE FOR ELECTROSTATICALLY FLOCCULATING, ADHERING AND SEPARATING IMPURITY IN LIQUID

摘要

PROBLEM TO BE SOLVED: To continuously treat liquid to be treated by impressing voltage between a vessel and a drum which is rotated with slow speed and immersed in the liquid to be treated with which the vessel is filled, adhering particulates included in the liquid to be treated to the drum while flocculating the particulates and removing the particulates at a separate place from the liquid to be treated. SOLUTION: A cylindrical rotary drum electrode 1 is disposed in a vessel of a vessel grounded electrode 2, which has a semicylindrical shape and a larger inner diameter than the drum electrode 1. The vessel grounded electrode 2 and the rotary drum electrode 1 are faced each other to form passage 3. A voltage having such a height is impressed between both electrode 1 and 2 in accordance with a characteristic of particulates of impurities in a liquid of a liquid 8 to be treated that zeta potential of the particulates of the impurities in the liquid can be reduced or vanished and the particulates of the impurities in the liquid can be adhered to the electrode 1. The rotary drum electrode 1 is rotated together with impressing the voltage and the particulates included in the liquid 8 to be treated are adhered to and deposited on the rotary drum electrode 1 while being flocculated. The adhered and deposited impurities 9 in the liquid are removed at a separate place from the liquid 8 to be treated.