MOVING BED TYPE UPFLOW CONTINUOUS SAND FILTERING APPARATUS AND OPERATION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a moving bed type upflow continuous sand filtering apparatus, capable of easily and efficiently performing clog washing, in the event of clogging in a filtering module contained in each of a plurality of filtering tanks connected to a washing drainage collecting pipe, while preventing water high in suspended matter from being discharged from a filtered water nozzle beyond a weir.;SOLUTION: A washing drainage pipe 8 for discharging water between a filtered water recovery means 3 and a filtering layer 1 in the event of clogging in a filtering module M contained in each filtering tank 5 is connected to a washing drainage collecting pipe 7, and each clogging washing drainage pipe 8 includes an opening and closing means 9.;COPYRIGHT: (C)2013,JPO&INPIT