| 摘要 |
<p>PROBLEM TO BE SOLVED: To separate sludge particles contained in treated water rising accompanied by anaerobic gas by bringing org. gas into contact with anaerobic sludge. SOLUTION: A treatment tank 10 is equipped with a reaction part 11 having the anaerobic sludge bed 12 disposed at the bottom part of the reaction tank 10 and a water supply pipe 13 supplying org. waste water into the sludge bed as an ascending flow and a conical sedimentation part 14 of which the tip part is turned downwardly is formed so as to be immersed in the water above the reaction part 11. The erected cylindrical wall 15 of which the upper end part protrudes from the surface of the liquid in the tank and the lower end part is positioned in the water on the way of the height of the sedimentation part, the inclined wall 16 approaching the lower end of the sedimentation part from the lower end part of the erected cylindrical wall, the partition wall 17 equipped with a flood-in through 19 having a loser end downwardly introduced into the erected cylindrical wall above the sedimentation part 14 to shallowing protrude into the sedimentation part 14 and receiving the treated water from the surface of the liquid in the tank, the barrier plate 20 fitted to the outer surface of the sedimentation part 14 and obliquely protruding toward the inner surface of the lower end part of the errected cylindrical wall and a sludge discharge device 21 discharging the sludge accumulated on the bottom of the sedimentation part 14 to the outside of the sedimentation part are arranged.</p> |
