초록 ▼

A filtration system and method constitute the subject matter of the present invention. The system comprises first and second filtration stages which are joined in series with each stage comprising a plurality of filtration modules range for parallel flow. The concentrate from the first stage forms t

A filtration system and method constitute the subject matter of the present invention. The system comprises first and second filtration stages which are joined in series with each stage comprising a plurality of filtration modules range for parallel flow. The concentrate from the first stage forms the feed for the second stage and a portion of the second stage concentrate is recirculated to the first stage feed stream. A feed pump and a recirculating pump together with appropriate flow controllers and valves provide means for effecting control over both pressure and flow rate within the system.

대표청구항 ▼

A filtration system for separating a fluid feed stream into a concentrate fraction and a permeate fraction, said system comprising: a first stage comprising a plurality of filtration modules disposed in side-by-side relationship for parallel flow of said fluid feed stream through said first stage mo

A filtration system for separating a fluid feed stream into a concentrate fraction and a permeate fraction, said system comprising: a first stage comprising a plurality of filtration modules disposed in side-by-side relationship for parallel flow of said fluid feed stream through said first stage modules, each of said modules having an inlet, a concentrate outlet, and a permeate outlet; a second stage comprising a plurality of filtration modules coupled in parallel with each other; means for enabling concentrate from said first stage module to pass directly to said second stage modules without passing through a pump; means for forcing said feed stream through said first and second stages; and means for recycling a portion of the concentrate from said second stage to said first stage. A method of filtering a liquid comprised of at least two separable components, said method comprising the steps of: providing a plurality of first filtration modules in side-by-side relationship; passing a feed stream of said liquid through said modules in parallel flow; feeding the concentrate from said first modules directly to a plurality of second modules without passing through a pump, said second modules being disposed in side-by-side relationship for parallel flow of said concentrate through the second modules; and recycling a portion of the concentrate from said second modules to said feed stream.