초록 ▼

A filter media washing system for washing contaminants from filter media of a plurality of filtration vessels. Each filtration vessel has a filtration screen subdividing the filtration vessel into a filter media containing chamber and a filter media-free chamber. Each filter media containing chamber

A filter media washing system for washing contaminants from filter media of a plurality of filtration vessels. Each filtration vessel has a filtration screen subdividing the filtration vessel into a filter media containing chamber and a filter media-free chamber. Each filter media containing chamber of each filtration vessel has a first fluid passage connected thereto and is located distally from the filtration screen. A second fluid passage is also positioned in each filter media containing chamber, but it is located proximate to the filtration screen. The first and second fluid passages are fluidly coupled, one to the other with a decontamination unit located fluidly therebetween for separating filter media from contamination carried therewith. The decontamination unit includes a contamination separating pump, a contamination separating chamber, a contamination separating screen and a return manifold. The return manifold has a first and second return conduit. The first return conduit is fluidly connected to the second fluid passage of the first filtration vessel and the second return conduit is fluidly connected to the second fluid passage of the second filtration vessel. The contamination separating pump is elevationally above and coupled to the contamination separating chamber.

대표청구항 ▼

[ What is claimed and desired to be secured by letters patent is as follows:] [13.] A method for washing contaminants from filter media of multiple filtration vessels utilizing a single decontamination unit; said washing method comprising the following steps:terminating a filtration cycle in at leas

[ What is claimed and desired to be secured by letters patent is as follows:] [13.] A method for washing contaminants from filter media of multiple filtration vessels utilizing a single decontamination unit; said washing method comprising the following steps:terminating a filtration cycle in at least one filtration vessel of a plurality of filtration vessels in which contaminated fluid is filtered through a particlized filter media to produce decontaminated fluid and contaminated filter media during the filtration cycle;fluidizing said particlized filter media so that said particlized filter media is suspended in carrying fluid within said filtration vessel;transporting said fluidized filter media from said filtration vessel to a decontamination unit, said decontamination unit comprising in series and in elevationally descending order a contamination separating pump and a contamination separating chamber having a contamination separating screen located at least partially therein; andreturning said fluidized filter media to said filtration vessel through a return manifold, said return manifold having a plurality of return conduits, one of said plurality of return conduits being fluidly connected to said filtration vessel for return of cleaned fluidized filter media.