# US 4,391,713 A · Reverse osmosis unit-degasifier system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,391,713 A
- Document ID: US4391713A
- Status: Granted
- Kind: A
- Application number: 06/311,883
- Filed: 1981-10-15
- Granted: 1983-07-05
- Earliest claimed: 1980-06-20
- Assignees: Vaponics Inc.
- Inventors: Verity C. Smith
- Web page: https://patentgrep.com/patent/US4391713A

## CPC

- B01D 61/08: Apparatus therefor
- B01D 2311/08: Specific process operations in the concentrate stream
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

The high pressure waste water from a reverse osmosis unit is conveyed to an eductor where it creates a source of low pressure for operating a degasifier that removes carbon dioxide from the water treated by the reverse osmosis unit.

## Claims

### Claim 1

A reverse osmosis membrane unit and degasifier system comprising:
a reverse osmosis unit having an inlet for receiving water under high pressure, an outlet for water passed through the reverse osmosis membrane, and an outlet for waste water, said outlet discharging said waste water at high pressure;
a carbon dioxide degasifier having an inlet connected to said outlet for water passed through the reverse osmosis membrane, and means for degasifying said water, said degasifying means responsive to a source of low pressure;
a educator means for producing low pressure in response to a flow of liquid under high pressure;
means for conveying said waste water under high pressure from said RO unit to said educator means for producing low pressure, as said carbon dioxide degasifier is receiving said water passed through the reverse osmosis membrane; and means for connecting said low pressure to degasifier.

### Claim 2

A method of degasifying water passed through the reverse osmosis membrane of an RO unit, comprising the steps of:
providing a degasifier having an inlet for receiving water to be degasified and a low pressure chamber for removing gas from said degasifier;
conveying the output of said RO unit to said degasifier;
providing an educator for producing low pressure in response to a flow of liquid under high pressure;
conveying the waste water under high pressure from said RO unit to said educator to produce low pressure in said educator in response to the flow of waste water as said degasifier is receiving said water passed through the RO unit; and
connecting said educator to said degasifier low pressure chamber.