RECYCLING DEVICD AND METHOD OF WASTEWATER FOR CLEANING UNDERGROUND FACILITIES

摘要

An apparatus and a method of recycling wastewater for cleaning underground facilities are provided to improve recycling efficiency by injecting a coagulant into a sucking and coagulating part for sucking wastewater using vacuum pressure and filtering the wastewater and sludge in a state that wastewater and sludge are coagulated, thereby recycling the wastewater. An apparatus of recycling wastewater for cleaning underground facilities comprises: a water collection part(110) including a catchment tank(111) having a water sucking part(112) formed at one side thereof and a collected water discharging part(113) formed at the other side thereof, and a vacuum suction pipe(114) which is installed on a top part of the catchment tank, has a backflow preventing member(116), and is connected to a vacuum pump(115); a sucking coagulation part(120) including a raw water sucking pipeline(122) connected to the water sucking part to suck in wastewater of an underground facility through a raw water suction port(121) by vacuum pressure of the catchment tank, an agitation part(123) which is formed at one side of the raw water sucking pipeline, and which has a coagulant pipeline(126) connected to a coagulant supply part(124) thereof, and a water sucking pipeline(127) formed at the other side of the agitation part to supply wastewater agitated with a coagulant into the catchment tank; a filter transfer part(130) including a water coagulation filter(131) formed within the catchment tank to filter the wastewater agitated with the coagulant, and a transfer pipe(132) which is connected to a transfer pump(133), and through which filtered wastewater is transferred to the collected water discharging part; and a recycling part(140) including a recycling tank(141) which is connected to the transfer pipe of the filter transfer part, and which discharges recycled water to a discharge pipeline(143) by operating a discharge valve(142).