US4009104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine sanitation method and device
Assignee: Filteron Systems Inc
•
Filing: 1975-08-21
•
Granted: 1977-02-22
•
Expires: 1995-08-21
Abstract
Abstract Automatic marine sewage treatment through a pair of tanks with salt water based sewage fed to the first tank after removal of solids above a predetermined size. Circulation means responsive to liquid levels in the tanks cause batch transfer of liquids from the first tank to the second tank and multiply circulate a stream of liquids from and to the second tank while filling the first tank. Electrolytic treatment subjects the stream to D.C. current flow, producing treating chemicals. Treated liquids are discharged from the second tank when the first tank reaches a control level, delivering a predetermined fraction of the treated liquids to the first tank.
Inventors
- 👤 George H. Behrendt
- 👤 Jesse L. Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:17
CPC Classifications
B; B63; B63J; B63J4/00; B63J4/004; C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/467; C02F1/463; C02F1/4672; C02F1/4674; C02F2103/00; C02F2103/002; C02F2103/008; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4612; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
185 words
An automatic marine sewage treatment unit comprising: a. storage means including a first tank and a second tank, b. a sewage inlet channel leading to said first tank including a separator for removal of solids above a predetermined size from incoming salt water based sewage, c. a pump having i. inlet structure for receiving liquid from said second tank and a flow channel including a first valve leading from said first tank, and ii. a first outlet channel structure including a second valve and an electrolytic cell leading back to said second tank and a second outlet channel structure including a system output line having a third valve therein, d. means including high level sensor means in said first tank to close said second valve and open said third valve to empty said second tank, e. means including low level sensor means in said second tank to close said third valve and open said first and second valves for liquid transfer to said second tank through said cell, and f. means including high level sensor means in said second tank to close said first valve.
Claim 2
Dependent Claim
185 words
An automatic marine sewage treatment unit comprising: a. storage means including a first tank and a second tank, b. a sewage inlet channel leading to said first tank including a separator for removal of solids above a predetermined size from incoming salt water based sewage, c. a pump having i. inlet structure for receiving liquid from said second tank and a flow channel including a first valve leading from said first tank, and ii. a first outlet channel structure including a second valve and an electrolytic cell leading back to said second tank and a second outlet channel structure including a system output line having a third valve therein, d. means including high level sensor means in said first tank to close said second valve and open said third valve to empty said second tank, e. means including low level sensor means in said second tank to close said third valve and open said first and second valves for liquid transfer to said second tank through said cell, and f. means including high level sensor means in said second tank to close said first valve.
Claim 3
Dependent Claim
194 words
An automatic marine sewage treatment unit comprising: a. multiple sewage receiving tanks, b. a sewage inlet channel leading to a first of said tanks having screen means for removal of solids above a predetermined size from incoming salt water based sewage, and c. flow control means having structure for receiving liquid from the second of said tanks and by way of a first conduit including a first valve leading from said first of said tanks, and leading by way of a second conduit including a second valve and an electrolytic cell to said second of said tanks and by way of a third conduit including a third valve to a system output line, means including sensor means in said tanks to close said second valve and open said third valve to empty said second of said tanks upon high level in said first of said tanks, to close said third valve and open said first and second valves for liquid transfer to said second of said tanks through said cell upon low level in the second of said tanks, and to close said first valve upon high level in said second of said tanks.
Claim 4
Dependent Claim
194 words
An automatic marine sewage treatment unit comprising: a. multiple sewage receiving tanks, b. a sewage inlet channel leading to a first of said tanks having screen means for removal of solids above a predetermined size from incoming salt water based sewage, and c. flow control means having structure for receiving liquid from the second of said tanks and by way of a first conduit including a first valve leading from said first of said tanks, and leading by way of a second conduit including a second valve and an electrolytic cell to said second of said tanks and by way of a third conduit including a third valve to a system output line, means including sensor means in said tanks to close said second valve and open said third valve to empty said second of said tanks upon high level in said first of said tanks, to close said third valve and open said first and second valves for liquid transfer to said second of said tanks through said cell upon low level in the second of said tanks, and to close said first valve upon high level in said second of said tanks.
Claim 5
Dependent Claim
135 words
An automatic marine sewage treatment unit comprising: a. storage means including a first tank and a second tank, b. a sewage inlet channel leading to said first tank including a separator for removal of solids above a predetermined size from incoming salt water based sewage, c. circulation means responsive to liquid levels in said tanks for batch transfer of liquids from said first tank to said second tank and for circulating a steam of liquids from and to said second tank while filling said first tank, d. electrolytic treatment means in said circulation means for subjecting said stream to D.C. current flow, and e. means to discharge treated liquids from said second tank when said first tank reaches a control level and for delivering a predetermined fraction of said treated liquids to said first tank.
Claim 6
Dependent Claim
135 words
An automatic marine sewage treatment unit comprising: a. storage means including a first tank and a second tank, b. a sewage inlet channel leading to said first tank including a separator for removal of solids above a predetermined size from incoming salt water based sewage, c. circulation means responsive to liquid levels in said tanks for batch transfer of liquids from said first tank to said second tank and for circulating a steam of liquids from and to said second tank while filling said first tank, d. electrolytic treatment means in said circulation means for subjecting said stream to D.C. current flow, and e. means to discharge treated liquids from said second tank when said first tank reaches a control level and for delivering a predetermined fraction of said treated liquids to said first tank.
Claim 7
Dependent Claim
99 words
An automatic marine sewage treatment method comprising the repetitive cycle: a. accumulating sewage laden salt water in a first tank while circulating sewage laden salt water from a second tank through an electrolytic cell and back to said second tank for build up of hypochlorite levels therein, and b. responsive to liquid levels in said tanks, batch transferring a minor fraction of liquid from said second tank to said first tank while eliminating a major fraction of liquids from said second tank and then batch transferring a major fraction of liquid in said first tank to said second tank.
Claim 8
Dependent Claim
99 words
An automatic marine sewage treatment method comprising the repetitive cycle: a. accumulating sewage laden salt water in a first tank while circulating sewage laden salt water from a second tank through an electrolytic cell and back to said second tank for build up of hypochlorite levels therein, and b. responsive to liquid levels in said tanks, batch transferring a minor fraction of liquid from said second tank to said first tank while eliminating a major fraction of liquids from said second tank and then batch transferring a major fraction of liquid in said first tank to said second tank.
Claim 9
Dependent Claim
140 words
An automatic marine sewage treatment unit comprising: a. an accumulation tank and a recycle tank, b. a salt water based sewage supply for deposit in said accumulation tank, c. structure including a pump connected to move liquid from said recycle tank and selectively from said accumulation tank to said recycle tank through an electrolytic cell and to a system output line, d. means including a high level sensor in said accumulation tank to direct output from said pump to said system output line, e. means including a low level sensor in said recyle tank to permit flow to said pump from said accumulation tank and to direct output from said pump to said recycle tank through said cell, and f. means including a high level sensor in said recycle tank to terminate flow from said accumulation tank to said pump.
Claim 10
Dependent Claim
140 words
An automatic marine sewage treatment unit comprising: a. an accumulation tank and a recycle tank, b. a salt water based sewage supply for deposit in said accumulation tank, c. structure including a pump connected to move liquid from said recycle tank and selectively from said accumulation tank to said recycle tank through an electrolytic cell and to a system output line, d. means including a high level sensor in said accumulation tank to direct output from said pump to said system output line, e. means including a low level sensor in said recyle tank to permit flow to said pump from said accumulation tank and to direct output from said pump to said recycle tank through said cell, and f. means including a high level sensor in said recycle tank to terminate flow from said accumulation tank to said pump.
Claim 11
Dependent Claim
175 words
In salt water sewage treatment where volume controllers set liquid levels in an accumulation tank receiving salt water borne sewage to be treated and a recycle tank, the method of controlling hypochlorite concentration C 1 and C 2 in said accumulation and recycle tanks, respectively, comprising: a. reducing the volume of liquids in said recycle tank to a smaller volume Q 2 when said accumulation tank attains an intermediate liquid volume Q 1 and concurrently introducing part of the liquids from said recycle tank into said accumulation tank to increase the liquid in said accumulation tank to a highest volume Q 3 , b. when said volume Q 2 is reached in said recycle tank, transferring liquid from said accumulation tank to said recycle tank until the volume of liquid in said accumulation tank reaches volume Q 3 , and c. thereafter as said accumulation tank is filling with sewage laden salt water to be treated, circulating liquid in said recycle tank through an electrolytic cell to raise the hypochlorite concentration in said recycle tank.
Claim 12
Dependent Claim
175 words
In salt water sewage treatment where volume controllers set liquid levels in an accumulation tank receiving salt water borne sewage to be treated and a recycle tank, the method of controlling hypochlorite concentration C 1 and C 2 in said accumulation and recycle tanks, respectively, comprising: a. reducing the volume of liquids in said recycle tank to a smaller volume Q 2 when said accumulation tank attains an intermediate liquid volume Q 1 and concurrently introducing part of the liquids from said recycle tank into said accumulation tank to increase the liquid in said accumulation tank to a highest volume Q 3 , b. when said volume Q 2 is reached in said recycle tank, transferring liquid from said accumulation tank to said recycle tank until the volume of liquid in said accumulation tank reaches volume Q 3 , and c. thereafter as said accumulation tank is filling with sewage laden salt water to be treated, circulating liquid in said recycle tank through an electrolytic cell to raise the hypochlorite concentration in said recycle tank.
Claim 13
Dependent Claim
49 words
The method set forth in claim 6 in which concentrations C 1 and C 2 are related in the following manner: ##EQU2## where n is the number of fill-empty cycles completed and C.sub.2 = 0.142I - 0.0019I.sup.2 + 4.76 × 10.sup..sup.-6 I.sup.3 for values of I > 250 amps.
References Cited (Backward Citations)
US3844946A
Cited
US3679053A
Cited
US3655048A
Cited
US3766037A
Cited
US3936364A
Cited
US3925176A
Cited
US3933606A
Cited
US3915857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |