Transportable reverse osmosis water purification unit

Details Transportable reverse osmosis water purification unit Transportable reverse osmosis water purification unit

1992-10-09

1993-09-14

Dawson, Robert A.

Liquid purification or separation

Processes

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

2101952, 2102572, 210636, 210791, B01D 6100

Patent

active

052445798

ABSTRACT:
A self-contained, transportable reverse osmosis water purification unit has a limited throughput of no more than about 20 gpm of permeate in a single pass operation with reverse osmosis ("RO") modules which can be cleaned in place. When raw water is particularly fouled, the unit is operated in a double pass operation in which the permeate from the first pass is used as feed for a second RO module. The unit, referred to as a "purification container" "PC" or an ADROWPU because the PC is air-deliverable, comprises an enclosed weather-tight housing having a base on which the major components are removably mounted. For transportability, the PC has the overall dimensions of an ISO container, and is fitted with means to load and unload it on standard carriers. A high pressure pump is required to feed water freed from suspended solids to the RO modules. The pump also delivers concentrate to a bladder tank where the concentrate is stored under pressure (about 100 psig) to flush a coarse filter automatically when it is plugged, which is often. Fine filters for solids removal are not plugged too often and can be replaced when the unit is not producing permeate. The ADROWPU is unique because of the economy of components used to produce a relatively large amount of permeate from any available raw water source. The placement of the components symmetrically about the center of mass of the PC is essential to allow the PC to be loaded and unloaded uneventfully, even if it is delivered by a helicopter.

REFERENCES:
patent: 4414113 (1983-11-01), LaTerra
patent: 4574049 (1986-03-01), Pittner
patent: 4681677 (1987-07-01), Kuh et al.
patent: 4784771 (1988-11-01), Wathen et al.
patent: 4810388 (1989-03-01), Trasen
patent: 4980066 (1990-12-01), Slegers
patent: 5043071 (1991-08-01), Anselme et al.
patent: 5116500 (1992-05-01), Ceaton
"Operation Desert Storm"-Army's Use of Water Purification Equipment-Sep. 1991 U.S. Gen. Acctg. Office Report to the Chairman, Subcommittee on Readiness, etc.
"Reverse Osmosis" Development of a High Technology Water Treatment Capability for the Canadian Forces-by Capt. M. J. Hauschild, UBIQUE No. 35, Sep. 1990.
"The Army Water Supply Program" by Thomas H. Bagwell, Jr.-U.S. Army Belvoir Research and Development and Engineering Center-Sep. 1990.
Information on Filtomat Water Filters Focus on Fluid Handling by Ed Rothenberg Jun. 1988.

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