Method and apparatus for purifying water

Details Method and apparatus for purifying water Method and apparatus for purifying water

1993-05-11

1994-06-14

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 210805, 21032165, 210295, 210 87, 210 90, 210134, B01D 6100

Patent

active

053207556

ABSTRACT:
When applying a method and an arrangement for purifying water, an inflow of contaminated water is converted to a pressure elevated flow which is divided in a purifying unit into a purified outflow and a contaminated outflow, which in turn is divided into a return flow and a reject flow. With the intention of providing a large return flow under high pressure for the purpose of rinsing clean the filter unit during operation, the return flow includes a first return flow (return conduit 24) which is recycled to the pressure-elevated flow (pressure conduit 16) and which is larger than the inflow, and further includes a second return flow which is pressure-restricted with respect to the first return flow, and the second return flow is returned to the inflow.

REFERENCES:
patent: 4243523 (1981-01-01), Pelmulder
patent: 4662208 (1987-05-01), Metzner et al.
patent: 4702842 (1987-10-01), Lapierre
patent: 4772385 (1988-09-01), Yamada et al.
patent: 4850498 (1989-07-01), Taylor
patent: 5112489 (1992-05-01), Hartmann
patent: 5158681 (1992-10-01), Freeman et al.
patent: 5194158 (1993-03-01), Matson

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