DRAINAGE TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a drainage treatment apparatus, capable of smoothly agglutinating activated sludge even in high-concentration drainage having high biochemical oxygen demand BOD and sufficiently improving filtering efficiency.

SOLUTION: The drainage treatment apparatus 1 includes: an aeration device 1 for performing aeration treatment on an activated sludge mixture; a pile carrier 3 for adhering activated sludge in the activated sludge mixture aeration-treated by the aeration device 2; and a membrane filtering device 4 for separating the activated sludge mixture aeration-treated by the aeration device 2 into treated water and sludge. The pile carrier 3 is constituted by a sheet-like base cloth 31 consisting of a fiber assembly and pile yarns 32, 32, ..., protruded respectively from both surfaces of the base cloth 31.

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