SOLID-LIQUID SEPARATION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a solid-liquid separation apparatus capable of stably carrying out solid-liquid separation by a separation membrane for a long duration while preventing clogging of an aeration apparatus. SOLUTION: The solid-liquid separation apparatus (11) is provided with a membrane separation apparatus (2) installed in the inside of a membrane separation tank (1) and an aeration apparatus (3) installed under the membrane separation apparatus (2) in approximately horizontal direction. The aeration apparatus (3) is provided with aeration pipes (5) each having a tip end opening part 7 at the tip end part and a slit-like opening part (8) extended in the side part in the longitudinal direction. The aeration pipes (5) and an aeration header pipe (10) are connected through a gas supply pipe (9) having a higher ventilation resistance than that of the aeration pipes (5). The aeration header pipe (10) has a larger cross-section than that of the aeration pipes (5) and is positioned higher than the liquid level of the object liquid to be treated in the membrane separation tank (1). The aeration is kept well and even and the pressure balance among the aeration pipes (5) is kept constant by the aeration apparatus (3).