| 摘要 |
PROBLEM TO BE SOLVED: To provide a method in which substances which cause clogging are removed in advance, a load applied on a membrane is reduced, the recovery percentage of filtrate is increased, the consumption of an oxidizing agent is reduced, and clogging is controlled and an apparatus for the method. SOLUTION: Pressurized water which supplies an oxygen-containing gas to raw water is injected and mixed, suspended solids are floated/separated in a floating separation tank 4, floated/separated water is filtered by a membrane module 1, and the filtrate, after being added with an oxidizing agent, is filtered by a manganese oxidation/adsorption tank 5 to remove manganese to obtain treated water. A part of the filtrate is circulated to be used as pressurizing water. |
