METHOD AND APPARATUS FOR REMOVING VIRUS

摘要

PROBLEM TO BE SOLVED: To provide a method for completely removing viruses in water without deteriorating a permeation flux of a membrane.

SOLUTION: In this virus removal method, a membrane filter 26 is immersed in waste water in a nitrification tank 18 of an activated sludge treatment apparatus 10 to remove the viruses from the waste water via a membrane filtration. The nominal pore size of the membrane is set so as to be larger than the size of a virus to be removed from the waste water, and the concentration of suspended solid (SS) components in water to be treated is controlled according to the nominal pore size of the membrane used in the membrane filter 26.

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