DEPOSIT REMOVING DEVICE FOR SAND FRONT LAYER IN DRINKING WATER TREATMENT PLANT AND METHOD FOR USING DEPOSIT REMOVING EQUIPMENT FOR SAND FRONT LAYER IN DRINKING WATER TREATMENT PLANT

摘要

PROBLEM TO BE SOLVED: To provide a device which forcibly and emergently removes deposits when high-turbidity muddy materials and suspensions of a slow and filter basin deposit on a sand surface layer to make the continuation of filtration infeasible.;SOLUTION: The device comprises a tapered pyramid skirt section 2, a submersible pump section 3, a water level regulating machine float section 4, a control rod section 5 and a rope 6 for movement. When the suspensions deposit on the sand surface layer of the filter basin and the filer basin is put into a clogged state to make the assurance of a necessary amount of water flow impossible, the device is emergently operated to prevent the occurrence of a water failure, or the like.;COPYRIGHT: (C)2003,JPO