WASTE WATER TREATMENT FACILITY

摘要

A waste water treatment facility (1) having: biological treatment equipment (4) for biologically treating a liquid to be treated (W); sludge separating equipment (3, 5) for separating the sludge in the liquid being treated (W) upstream and/or downstream of the biological treatment equipment (4); a sludge collection tank (11) for collecting sludge that has been separated by the sludge separating equipment (3, 5); and sludge volume reduction equipment (13), which is disposed downstream of the sludge collection tank (11) and is for reducing the volume of the sludge. In the waste water treatment facility (1), a sand-removing device (16) is provided between the sludge separating equipment (3, 5) and the sludge collection tank (11) and/or between the sludge collection tank (11) and the sludge volume reduction equipment (13).