US4005010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of packing media in a tower or bed
Assignee: Imperial Chemical Industries Ltd
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Filing: 1976-04-13
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Granted: 1977-01-25
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Expires: 1996-04-13
Abstract
Abstract A method of biological treatment of effluent and the like in a packing tower or bed. Individual plastic packing elements are disposed in open-weave or open-mesh sacks, and are arranged in the tower or bed. Effluent is then passed through the tower or bed, bacteria and the like forming as a biological film on wetted surfaces of the packing elements. The open-weave arrangement allows the passage of air to the biological film, and allows passage of the biological film out of the tower when it becomes loosened from time to time. The sacks are disposed permanently in the tower, no cleaning or the like thereof being necessary.
Inventors
- 👤 John Lunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
B; B01; B01D; B01D15/00; B01D39/00; B01D39/02; B01D47/00; B01J; B01J19/00; B01J19/30; C; C02; C02F; C02F3/00; C02F3/02; C02F3/10; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30207; B01J2219/30211; B01J2219/30223; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
A method of biologically treating effluent and sewage comprising the steps of a. disposing a plurality of plastic elements as packing media in each of a plurality of open-weave or open-mesh sacks, the openings in said open-weave or open-mesh sacks being smaller than the smallest dimension of an individual plastic element, b. filling a tower or bed with a plurality of said open-weave or open-mesh sacks containing said plastic elements therein, said plastic elements when wetted providing surfaces for growing bacteria and other micro-organisms as a biological film, c. passing effluent and sewage through said packed tower or bed while supplying through said media and said sacks air required to sustain the growth of the bacteria and other micro-organisms on wetted packing element surfaces, and allowing the biological film to pass through said media and said sacks as it from time to time is dislodged, and d. retaining said packing media containing sacks in place in said tower or bed for the effective life of said tower or bed.
Claim 2
Independent Claim
169 words
A method of biologically treating effluent and sewage comprising the steps of a. disposing a plurality of plastic elements as packing media in each of a plurality of open-weave or open-mesh sacks, the openings in said open-weave or open-mesh sacks being smaller than the smallest dimension of an individual plastic element, b. filling a tower or bed with a plurality of said open-weave or open-mesh sacks containing said plastic elements therein, said plastic elements when wetted providing surfaces for growing bacteria and other micro-organisms as a biological film, c. passing effluent and sewage through said packed tower or bed while supplying through said media and said sacks air required to sustain the growth of the bacteria and other micro-organisms on wetted packing element surfaces, and allowing the biological film to pass through said media and said sacks as it from time to time is dislodged, and d. retaining said packing media containing sacks in place in said tower or bed for the effective life of said tower or bed.
Claim 3
Dependent Claim
44 words
A method as recited in claim 1 wherein the sacks are substantially filled with said packing elements, and wherein said step of filling said packing tower or bed is accomplished by arranging said filled sacks in an orderly manner within said tower or bed.
Claim 4
Dependent Claim
64 words
A method as recited in claim 1 wherein the sacks are incompletely filled with packing elements so that the media may move within the sacks and adopt the available packing space, and wherein said step of filling said packing tower or bed is accomplished by randomly arranging said incompletely filled sacks in said tower or bed so that they adopt the available packing space.
References Cited (Backward Citations)
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US1239234A
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US2087157A
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US2692683A
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |