US3839206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing pollutants from liquids
Assignee: Keystone International Holdings Corp
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Filing: 1973-04-02
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Granted: 1974-10-01
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Expires: 1993-04-02
Abstract
Abstract The treatment of waste water by the application of polyelectrolytes to the waste water to remove dispersed and dissolved waste particles and then subjecting the resultant treated or clarified solution to reverse osmosis to further remove dissolved particles therefrom.
Inventors
- 👤 R Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:39
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/003; B01D21/0033; B01D21/0039; B01D21/0042; B01D21/02; B01D21/08; B01D21/24; B01D21/2405; B01D21/2411; B01D21/2488; C02F1/44; C02F1/441; B01D2311/00; B01D2311/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
196 words
A SYSTEM FOR REMOVING CONTAMINANTS FROM WASTE WATER COMPRISING A FLOCCULATING CHAMBER HAVING AN INLET FOR RECEIVING WASTE WATER AND AN OUTLET IN FLUID CONNECTION WITH A FILLER UNIT, SAID FILTER UNIT BEING CONSTRUCTED AND ARRANGED TO FILTER OUT THE FLOC FORMED IN SAID FLOCCULATING CHAMBER, SAID FILTER UNIT BEING IN FLUID CONNECTION WITH A REVERSE OSMOSIS CHAMBER FOR PASSAGE THERETO OF THE FILTRATE FROM SAID FILTER UNIT, SAID FILTRATE CONSTITUTING A CONCENTRATED SOLUTION, SAID REVERSE OSMOSIS CHAMBER HAVING A REVERSE OSMOSIS MEMBRANE DIVIDING IT INTO INLET AND OUTLET SECTIONS, MEANS TO APPLY PREDETERMINED PRESSURE TO AID CONCENTRATED SOLUTION IN SAID INLET SECTION, AND OUTLET MEANS IN SAID OUTLET SECTION FOR REMOVAL OF THE FILTRATE RESULTING FROM PASSAGE THROUGH SAID MEMBRANE, SAID FLOCCULATING CHAMBER COMPRISING A TUBULAR HOUSING HAVING BAFFLE MEANS THEREIN, WASTE WATER INLET MEANS IN SAID FLOCCULATIN ING CHAMBER, SAID WASTE WATER INLET MEANS BEING IN THE AXIAL PLANE OF SAID FLOCCULATING CHAMBER, AND A FLOCCULATING AGENT INLET WHICH IS TANGENTIAL TO THE AXIS OF SAID FLOCCULATING CHAMBER, SAID FLOCCULATING AGENT INLET PROVIDING A SUBSTANTIALLY HELICAL FLOW OF THE WASTE WATER AND MATTER ENTRAINED THEREIN IN THE GENERAL AXIAL DIRECTION OF SAID FLOCCULATING CHAMBER.
Claim 2
Independent Claim
196 words
A SYSTEM FOR REMOVING CONTAMINANTS FROM WASTE WATER COMPRISING A FLOCCULATING CHAMBER HAVING AN INLET FOR RECEIVING WASTE WATER AND AN OUTLET IN FLUID CONNECTION WITH A FILLER UNIT, SAID FILTER UNIT BEING CONSTRUCTED AND ARRANGED TO FILTER OUT THE FLOC FORMED IN SAID FLOCCULATING CHAMBER, SAID FILTER UNIT BEING IN FLUID CONNECTION WITH A REVERSE OSMOSIS CHAMBER FOR PASSAGE THERETO OF THE FILTRATE FROM SAID FILTER UNIT, SAID FILTRATE CONSTITUTING A CONCENTRATED SOLUTION, SAID REVERSE OSMOSIS CHAMBER HAVING A REVERSE OSMOSIS MEMBRANE DIVIDING IT INTO INLET AND OUTLET SECTIONS, MEANS TO APPLY PREDETERMINED PRESSURE TO AID CONCENTRATED SOLUTION IN SAID INLET SECTION, AND OUTLET MEANS IN SAID OUTLET SECTION FOR REMOVAL OF THE FILTRATE RESULTING FROM PASSAGE THROUGH SAID MEMBRANE, SAID FLOCCULATING CHAMBER COMPRISING A TUBULAR HOUSING HAVING BAFFLE MEANS THEREIN, WASTE WATER INLET MEANS IN SAID FLOCCULATIN ING CHAMBER, SAID WASTE WATER INLET MEANS BEING IN THE AXIAL PLANE OF SAID FLOCCULATING CHAMBER, AND A FLOCCULATING AGENT INLET WHICH IS TANGENTIAL TO THE AXIS OF SAID FLOCCULATING CHAMBER, SAID FLOCCULATING AGENT INLET PROVIDING A SUBSTANTIALLY HELICAL FLOW OF THE WASTE WATER AND MATTER ENTRAINED THEREIN IN THE GENERAL AXIAL DIRECTION OF SAID FLOCCULATING CHAMBER.
Claim 3
Dependent Claim
17 words
The system of claim 1 wherein said concentrate is recycled for further passage through said flocculating chamber.
Claim 4
Dependent Claim
26 words
The system of claim 1 wherein said flocculating chamber is constructed and arranged to provide continuous flow therethrough to the reverse osmosis chamber in stream therewith.
Claim 5
Dependent Claim
33 words
The system of claim 1 wherein spaced perforated plates are provided in said flocculating chamber, said plates having successively larger apertures as they are situated closer to the outlet end of said chamber.
Claim 6
Dependent Claim
29 words
The system of claim 1 wherein said means to apply pressure comprises a pump, said pump also serving to simultaneously pass said concentrated solution to said reverse osmosis chamber.
Claim 7
Dependent Claim
32 words
The system of claim 1 wherein supply means for supplying waste water to said flocculating chamber comprise at least two separate sources, each source containing waste water of a different pH value.
Claim 8
Dependent Claim
21 words
The system of claim 6 wherein means are provided for adjusting flow from said sources to obtain a predetermined pH value.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |