TREATED WATER OUTFLOW DEVICE OF BIOLOGICAL REACTION TANK

摘要

PROBLEM TO BE SOLVED: To provide the treated water outflow device of a biological reaction tank capable of being adapted even to an existing biological reaction tank hardly securing water level difference because the water passing load of a carrier separating screen can be uniformized and a head loss can be lowered.

SOLUTION: In the treated water outflow device 2 of the biological reaction tank 1 for allowing treated water to flow out from a trough 3 through a screen 6, a plurality of inflow ports 5 are formed to the side walls of the trough 3 so as to provide intervals in the flow direction of treated water and the width of the trough 3 is made wider toward the downstream side of the flow of treated water.

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