Patent US3876542A successfully refreshed from Google Patents.
US3876542A
Expired / Lapsed
US
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Liquid wastes redistribution apparatus
Assignee: Neptune Microfloc Inc
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Filing: 1972-04-06
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Granted: 1975-04-08
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Expires: 1992-04-06
Abstract
Abstract An apparatus and method for the redistribution of liquid wastes discharged from a distribution means over a biological filter for the treatment of the wastes, particularly a filter comprised primarily of vertical surfaces, is disclosed. The apparatus includes a plurality of layers of horizontally disposed surfaces positioned between the distribution nozzles and the filter media, which surfaces intercept, retard and evenly distribute the liquid wastes prior to their flow down through the filter media. A mazelike flow channel construction is also disclosed to reduce surges in the flow rate caused by periodic impulses or discharges of liquid wastes, as is commonly encountered in rotary arm distribution apparatus.
Inventors
- 👤 Edwin R Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:23
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/043; C02F3/10; C02F3/101; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y02W10/30; Y02W10/37
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
In a liquid wastes treatment apparatus including a trickling filter media having a plurality of vertically extending surfaces providing a biological habitat for the treatment of said liquid wastes and distribution means including discharge outlets positioned over said filter media for discharge of said liquid wastes on said media for gravitation therethrough, the improvement comprising: a liquid wastes redistribution media positioned between the top of said filter media and beneath said discharge outlets, said redistribution media being of relatively small depth compared to said filter media and formed with a plurality of vertically spaced and superimposed layers of upwardly and downwardly facing substantially horizontally extending surfaces of substantial area and connecting vertically extending surfaces of substantially less area than said horizontally extending surfaces, said horizontally extending surfaces being formed to define openings therethrough for the downward flow of said liquid wastes from said outlets through said redistribution media to said filter media with said horizontally extending surfaces interrupting, retarding and redistributing said liquid wastes as said liquid wastes pass from one layer to the next vertically adjacent layer of said redistribution media.
Claim 2
Dependent Claim
182 words
In a liquid wastes treatment apparatus including a trickling filter media having a plurality of vertically extending surfaces providing a biological habitat for the treatment of said liquid wastes and distribution means including discharge outlets positioned over said filter media for discharge of said liquid wastes on said media for gravitation therethrough, the improvement comprising: a liquid wastes redistribution media positioned between the top of said filter media and beneath said discharge outlets, said redistribution media being of relatively small depth compared to said filter media and formed with a plurality of vertically spaced and superimposed layers of upwardly and downwardly facing substantially horizontally extending surfaces of substantial area and connecting vertically extending surfaces of substantially less area than said horizontally extending surfaces, said horizontally extending surfaces being formed to define openings therethrough for the downward flow of said liquid wastes from said outlets through said redistribution media to said filter media with said horizontally extending surfaces interrupting, retarding and redistributing said liquid wastes as said liquid wastes pass from one layer to the next vertically adjacent layer of said redistribution media.
Claim 3
Dependent Claim
63 words
The liquid wastes treatment apparatus as defined in claim 1 wherein, said surfaces in said redistribution media are provided by surfaces on elongated lath-like members, and at least one of said layers of said redistribution media is positioned with the longitudinal axes of said lath-like members in said layer transverse to the longitudinal axes of said lath-like members in a vertically adjacent layer.
Claim 4
Dependent Claim
118 words
The liquid wastes treatment apparatus as defined in claim 1 wherein said distribution means includes movable outlets periodically passing over portions of said filter media, and the further improvement of: said upwardly facing horizontally extending surfaces in said redistribution media are arranged to form an inlet opening, a maze-like flow channel communicating with said inlet opening and formed to impart a horizontal component to the direction of flow of said liquid wastes therethrough and change the direction of flow of said liquid wastes prior to discharge thereof onto said filter media, and a discharge opening whereby the flow rate of said liquid wastes from said discharge opening is reduced below the flow rate during surges from said outlets.
Claim 5
Dependent Claim
40 words
The liquid wastes apparatus as defined in claim 3 wherein, said flow channel has a greater horizontal length than vertical length and said flow channel reverses the direction of flow of said liquid wastes by 180.degree. a plurality of times.
Claim 6
Dependent Claim
45 words
The liquid wastes treatment apparatus as defined in claim 1 and, a zone of redistribution media positioned intermediate of the height of said filter media, said zone being comprised of a plurality of layers of redistribution media formed with upwardly facing substantially horizontally extending surfaces.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |