NO20150833A1 - Aquaculture Waste Collecting System - Google Patents
Aquaculture Waste Collecting System Download PDFInfo
- Publication number
- NO20150833A1 NO20150833A1 NO20150833A NO20150833A NO20150833A1 NO 20150833 A1 NO20150833 A1 NO 20150833A1 NO 20150833 A NO20150833 A NO 20150833A NO 20150833 A NO20150833 A NO 20150833A NO 20150833 A1 NO20150833 A1 NO 20150833A1
- Authority
- NO
- Norway
- Prior art keywords
- conduit
- waste
- air
- receiving station
- suction head
- Prior art date
Links
- 239000002699 waste material Substances 0.000 title claims description 119
- 238000009360 aquaculture Methods 0.000 title claims description 49
- 244000144974 aquaculture Species 0.000 title claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000005086 pumping Methods 0.000 claims description 17
- 230000001174 ascending effect Effects 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 230000003028 elevating effect Effects 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/10—Cleaning bottoms or walls of ponds or receptacles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Description
This invention relates generally to an aquaculture system for growing aquatic animals in a body of water, and more particularly to a waste collecting system in such an aquaculture system.
In particular, the present invention relates to a waste collecting system for collecting sunken waste from at least one aquaculture cage structure positioned in a body of water, which at least one aquaculture cage structure comprises a coilar floating on a surface of the body of water and an aquaculture cage which is suspended from the coilar, which waste collecting system comprises a waste receiving station and a pumping system for pumping waste from the at least one aquaculture cage structure to the waste receiving station, which pumping system, for each of the at least one aquaculture cage structures, comprises: - a suction head;
- a conduit running from the suction head to the waste receiving station; and
- an air injection device connected to the suction head and/or the conduit for injecting air into the suction head and/or the conduit for creating an uplift in the conduit sufficient for a mixture of water and sunken waste accumulated at a bottom section of the aquaculture cage to be sucked into the suction head and raised to the waste receiving station.
The present invention also relates to an aquaculture system comprising such a waste collecting system.
The present invention further relates to a method of collecting sunken waste from a bottom section of an aquaculture cage.
The sunken waist may for example be unconsumed feed, faeces and morts, i.e. dead marine organism, e.g. dead fish. Within the industry, such a system is sometimes referred to as a mort collection system.
GB2498667A discloses an air-lift pumping system for collecting sunken waste from the bottom of an aquaculture cage. The system includes a suction head positioned at the bottom of the cage. The system also includes a hose which runs from the suction head to the surface of the body of water in which the cage is positioned. By injecting air into the suction head and/or the hose, sunken waste accumulated at the bottom of the cage will be sucked into the suction head and raised to the surface by means of the injected air rising in the hose. The waste raised by the air-lift pump is collected in a local waste receiving station positioned at the aquaculture cage.
N0332592B1 discloses an air-lift pumping system for collecting sunken waste from a plurality of aquaculture cages. An air-lift pump is positioned in each aquaculture cage for raising sunken waste collected at the bottom of the cage. The air-lift pumps are connected to a shared conduit which runs to a shared waste receiving station located on a floating platform. At the end of the shared conduit, opposite the waste receiving station, there is positioned a boost air-lift pump which assists the flow of waste from the aquaculture cages to the waste receiving station.
A problem in mort collection systems which employ air-lift pumps is that the driving force of the injected air is effective only as long as the conduit in which the waste flows has an ascending gradient. Once the conduit assumes a level orientation, the injected air will no longer assist the flow of the waste. Worse still, if the conduit assumes a declining gradient, the injected air may in fact hinder or even block the flow of the waste.
An object of the present invention is to at least alleviate this problem and bring about a waste collection system which produces an efficient pumping action also when the conduit has sections which do not have an ascending gradient.
The waste collection system according to the invention ischaracterized in thatthe pumping system, for at least one of the at least one aquaculture cage structure, comprises an air evacuation device which is connected to the conduit for evacuating air, injected by the air injection device, from the conduit in order to prevent accumulation of stagnant air inside the conduit.
It may be advantageous to connect the air evacuation device to the conduit at a location which, on an upstream side, is bordered by a conduit section displaying an ascending gradient and, on a downstream side, is bordered by a conduit section displaying a declining gradient. In other words, it may be advantageous to connect the air evacuation device to the conduit at a location where the conduit displays a local apex, i.e. a localised elevated section, at which location the injected air may get trapped in the conduit.
It may be advantageous to connect the air evacuation device to the conduit upstream of or at the first local apex of the conduit, i.e. before the conduit encounters a declining gradient.
In particular, it may be advantageous to connect the air evacuation device air to the conduit at a location where the conduit crosses the floating coilar of the aquaculture structure, at which location the conduit normally displays a local apex.
If the conduit displays a plurality of local apexes between the suction head and the waste collection station, it may be advantageous to position air evacuation devices at all or a plurality of these local apexes.
The conduit may advantageously comprise a central waste transport conduit which terminates in the waste receiving station and, for each of said at least one aquaculture cage structures, a waste elevating conduit which runs from the suction head of the aquaculture cage structure to the waste transport conduit, wherein the air evacuation device is connected to the waste elevating conduit at a location where the waste elevating conduit has its highest elevation.
The waste collecting system may advantageously, for each of said at least one aquaculture cage structures, comprises a check valve which is mounted in the waste elevating conduit of the aquaculture cage structure for preventing water and waste mixture flowing in a direction from the waste receiving station and towards the least one aquaculture cage structures.
It may be advantageous to position the waste receiving station above sea-level, e.g. on a central service barge, and the waste transport conduit may advantageously comprise a first, generally level conduit section floating on the surface, and a second, generally ascending conduit section leading up to the waste receiving station. Also, it may be advantageous to connect a pump (22) to the second, ascending conduit section for assisting in lifting the water and waste mixture up to the waste receiving station.
The air evacuation device may advantageously be the air evacuation valve AVK COMBINATION AIR VALVE, PN 10 - Type 701/75, which is marketed by AVK HOLDINS AS under arti ele number 701-xxx-75-09003. The parti culars of this valve are disclosed in AVK product brochure 701-75-010_en (version 55-1-12-2015 10:44), which is hereby incorporated by reference. It should be noted, however, that the air evacuation device can be any type of device which is capable of evacuating sufficient volumes of air from the conduit to prevent the development of pockets of stagnant air inside the conduit.
The method according to the invention comprises the step of evacuating air, injected by the air injection device, from the conduit in order to prevent accumulation of stagnant air inside the conduit.
In the following, the invention will be discussed in more detail with reference to the appended drawings, in which: Figure 1 discloses a top view of a sea-based aquaculture system according to the present invention.
Figure 2 discloses a side view of the system according to figure 1.
Figure 3 discloses a side view of an aquaculture cage of the system according to figures 1 and 2. Figures 1 and 2 disclose a sea-based aquaculture system according to the invention comprising a plurality of aquaculture cage structures 1. Figure 3 discloses one of the structures 1 in mote detail.
Each structure 1, which is for retaining aquaculture fish 2, comprises a ring-shaped floating coilar or tube 3 which floats on a surface 4 of a body of water 5. From the tube 3 there is suspended an aquaculture cage 6 (see figure 3) which comprises a cylinder-shaped wall section 7 and a funnel-shaped bottom section 8. The cage 6 may advantageously be fabricated from a netting material, e.g. fibre or metal netting, or a fabric.
The aquaculture system further comprises a pumping system 9 for removing sunken waste from the bottom of the cages 6. For each cage structure 1, the pumping system 9 comprises a suction head 10 positioned inside the cage 6 at the bottom section 8, and a waste elevating conduit 11 which runs from the suction head 10 to a generally horizontal waste transport conduit 12 which is located outside of the cage structure 1 at or close to the surface 4. Typically, the waste transport conduit 12 is deployed floating on the surface 4.
The pumping system 9 also comprises an air injection device 13 for injecting air into the suction head 10 and/or the conduit 11 at an air injection point, allowing water and sunken waste accumulated at the bottom section 8 to be sucked into the suction head 10 and raised to the surface 4 by means of the injected air rising in the conduit 11. For this purpose the air injection device comprises an air injection conduit 23 and a compressor (not disclosed).
The pumping system 9 further comprises a buoyancy module 14 which is coupled to the conduit 11 to hold the conduit 11 in a substantially upright orientation in the body of water 5 also when the injection of air is switched of. The buoyancy module 14 may be positioned at the surface 4 or at a predetermined position between the surface 4 and the suction head 10. It may be advantageous to design the buoyancy module 14 with a pipe section 15 and one or a plurality of buoyancy modules or floats 16 which are attached to the pipe section 15, whereby the pipe section 15 can be attached between a first, lower section lia and a second, upper section 1 lb of the conduit 11, as is disclosed in figure 3, making the pipe section 15 part of the waste elevating conduit 11.
As is evident from figures 1 and 2, all of the waste elevating conduits 11 are connected to and communicate with the waste transport conduit 12 allowing the water and waste mixture raised from each cage structure 1 to be pumped to the common waste transport conduit 12. To prevent flow in the other direction, i.e. from the common waste transport conduit 12 and into the cages 6, each conduit 11 may advantageously comprise a check valve 17.
The waste transport conduit 12, in turn, is connected to and communicates with a central waste collection or receiving station 18 which, in the disclosed embodiment, is positioned on a service barge 19. It is to be understood, however, that the waste receiving station may be positioned on any type of floating structure or vessel. Alternatively, if the location of the aquaculture system so allows, the waste receiving station may be land-based, e.g. positioned on land.
At the waste receiving station 18, the raised mixture of water and waste is advantageously separated, e.g. in a sieve box 20, after which the waste is directed to suitable processing or destruction.
The pumping system 9 of each cage structure 1 comprises an air evacuation device 21 which is connected to the waste elevation conduit 11 to prevent accumulation of stagnant air, injected by the air injection device 13, inside the conduit 11.
As discussed above, in each cage structure 1 the waste elevation conduit 11 runs from the suction head 10 to the waste transport conduit 12. Since the waste transport conduit 12 is positioned outside of the cage structure 1, and since it is not desirable to run the waste elevation conduit 11 through the wall section 7 of the cage 6, the conduit 11 runs over the floating coilar 3 before it connects to the conduit 12 at surface-level, i.e. at the level of the surface 4. Therefore, the conduit 11 will have a generally ascending gradient from the suction head 10 to the location where it crosses the coilar 3, and a generally declining gradient from the collar-crossing position to the conduit 12. In figure 3, the conduit sections lia and 11b have an ascending gradient, whereas a third conduit section lic has a declining gradient. Consequently, the conduit 11 has a highest elevation at the location where it crosses the coilar 3. At this location, air injected by the air injection device 13 may become stagnant and hinder or even block the flow of the water and waste mixture towards the common conduit 12. Consequently, it may advantageous to position the air evacuation device 21 at this location, e.g. as is disclosed in figure 3, which location, on the upstream side, is bordered by a conduit section displaying an ascending gradient, i.e. the conduit section 11b, and, on the downstream side, is bordered by a conduit section displaying a declining gradient, i.e. the conduit section lic.
Generally, it is preferable that the air evacuation device 21 is connected to the conduit 11 upstream of the first declining section of the conduit 11, i.e. before the conduit 11 encounters a declining gradient. In other words, the conduit 11 should preferably not have a declining gradient between the air injection point and the evacuation device 21. In other words still, the conduit 11 should preferably be connected to the conduit 11 upstream or at the first local apex of the conduit 11 after the air injection point.
Cage structures are generally provided with a walkway and a handrail (not disclosed) which are mounted on the coilar 3, in which cases the conduit 11 normally runs over the walkway or the handrail and, consequently, will have a highest elevation at the location where it crosses the walkway or the handrail. In such cases, the air evacuation device 21 is advantageously connected to the conduit where it crosses the walkway or the handrail.
The check valve 17 may be positioned upstream or downstream of the air evacuation device 21.
As previously stated, the air evacuation device 21 may advantageously be the air evacuation valve AVK COMBINATION AIR VALVE, PN 10 - Type 701/75,
which is marketed by AVK HOLDINS AS under arti ele number 701-xxx-75-09003. The particulars of this valve are disclosed in AVK product brochure 701-75-010_en (version 55-1-12-2015 10:44), which is hereby incorporated by reference. However, as also previously stated, the air evacuation device 21 can in principle be any type of device which is capable of evacuating sufficient volumes of air from the waste elevating conduit 11 to prevent the development of pockets of stagnant air inside the conduit 11.
It is not necessary that the air evacuation device 21 evacuates all of the injected air from the water and waste mixture, but only sufficient amounts to prevent the development of pockets of stagnant air. Remaining air may accompany the water and waste mixture into the waste transport conduit 12.
As is discussed above, the waste transport conduit 12 has a generally horizontal orientation and is normally deployed floating on the sea surface 4. However, the waste receiving station 18 is normally positioned above sea-level and, consequently, the final section of the conduit 12 leading up to the waste receiving station 18 normally has an ascending gradient, e.g. as is disclosed in figure 2. Consequently, the conduit 12 comprises a first, generally level conduit section 12a and a second, shorter ascending conduit section 12b disclosing a generally ascending gradient. Any injected air remaining in the water and waste mixture when it enters the conduit section 12b will assist in lifting the water and waste mixture up to the waste receiving station 18. However, if the remaining air is not sufficient to lift the water and waste mixture from the level conduit section 12a, it may be advantageous to assist this lifting action by arranging an additional pump 22 at the ascending conduit section 12b. Such a pump may for example be an air lift pump 22 which is arranged to inject air into the water and waste mixture in the conduit section 12b, as is disclosed in figure 2.
Above, a non-limiting embodiment of the invention has been discussed. It is to understood, however, that other embodiments, versions or variants are possible within the scope of the following claims. For example, it may be advantageous to position a plurality of air evacuation devices along the waste elevating conduit 11. Also, it may be advantageous position one or a plurality of air evacuation devices along the common waste transport conduit 12.
Claims (11)
1. A waste collecting system for collecting sunken waste from at least one aquaculture cage structure (1) positioned in a body of water (5), which at least one aquaculture cage structure (1) comprises a coilar (3) floating on a surface (4) of the body of water (5) and an aquaculture cage (6) which is suspended from the coilar (3), which waste collecting system comprises a waste receiving station (18) and a pumping system (9) for pumping waste from the at least one aquaculture cage structure (1) to the waste receiving station (18), which pumping system (9), for each of the at least one aquaculture cage structures (1), comprises: - a suction head (10); - a conduit (11, 12) running from the suction head (10) to the waste receiving station (18); and - an air injection device (13) connected to the suction head (10) and/or the conduit (11) for injecting air into the suction head (10) and/or the conduit (11) for creating an uplift in the conduit (11, 12) sufficient for a mixture of water and sunken waste accumulated at a bottom section (8) of the aquaculture cage (6) to be sucked into the suction head (10) and raised to the waste receiving station (18),
characterised in thatthe pumping system (9), for at least one of the at least one aquaculture cage structure (1), comprises an air evacuation device (21) which is connected to the conduit (11) for evacuating air, injected by the air injection device (13), from the conduit (11) in order to prevent accumulation of stagnant air inside the conduit (11).
2. The waste collecting system according to claim 1,characterised in thatthe air evacuation device (21) is connected to the conduit (11) at a location which, on an upstream side thereof, is bordered by a conduit section (1 lb) displaying an ascending gradient and, on a downstream side thereof, is bordered by a conduit section (1 lc) displaying a declining gradient.
3. The waste collecting system according to any one of the preceding claims,characterised in thatthe air evacuation device (21) is connected to the conduit (11) at a location where the conduit (11) crosses the floating coilar (3).
4. The waste collecting system according to any one of the preceding claims,characterised in thatsaid conduit (11, 12) comprises a central waste transport conduit (12) which terminates in the waste receiving station (18) and, for each of said at least one aquaculture cage structures (1), a waste elevating conduit (11) which runs from the suction head (10) of the aquaculture cage structure (1) to the waste transport conduit (12), wherein the air evacuation device (21) is connected to the waste elevating conduit (11) at a location where the waste elevating conduit (11) has its highest elevation.
5. The waste collecting system according to claim 4,characterised in thatthe waste collecting system, for each of said at least one aquaculture cage structures (1), comprises a check valve (17) which is mounted in the waste elevating conduit (11) of the aquaculture cage structure (1) for preventing water and waste mixture flowing in a direction from the waste receiving station (18) and towards the least one aquaculture cage structures (1).
6. The waste collecting system according to any one of claims 4 and 5,characterised in thatthe waste receiving station (18) is positioned above sea-level, and in that the waste transport conduit (12) comprises a first, generally level conduit section (12a) floating on the surface (4), and a second, generally ascending conduit section (12b) leading up to the waste receiving station (18), wherein the waste collecting system comprises a pump (22) which is connected to the second, ascending conduit section (12b) for assisting in lifting the water and waste mixture up to the waste receiving station (18).
7. The waste collecting system according to any one of the preceding claims,characterised in thatthe waste receiving station (18) is positioned on a central service barge.
8. An aquaculture system comprising at least one aquaculture cage structure (1) positioned in a body of water (5), which at least one aquaculture cage structure (1) comprises a coilar (3) floating on a surface (4) of the body of water (5) and an aquaculture cage (6) which is suspended from the coilar (3),characterisedin that the aquaculture system comprises a waste collecting system according to any one of claims 1-7.
9. A method of collecting sunken waste from a bottom section (8) of an aquaculture cage (6) using a pumping system (9) comprising: - a suction head (10), - a conduit (11, 12) running from the suction head (10) to a waste receiving station (18), and - an air injection device (13) connected to the suction head (10) and/or the conduit (11) for injecting air into the suction head (10) and/or the conduit (11) for creating an uplift in the conduit (11, 12) sufficient for a mixture of water and sunken waste accumulated at the bottom section (8) to be sucked into the suction head (10) and raised to the waste receiving station (18), which method comprises the step of evacuating air, injected by the air injection device (13), from the conduit (11) in order to prevent accumulation of stagnant air inside the conduit (11).
10. The method according to claim 9, wherein the step of evacuating air from the conduit (11) comprises evacuating the air at a location which, on an upstream side thereof, is bordered by a conduit section (11b) displaying an ascending gradient and, on a downstream side thereof, is bordered by a conduit section (1 lc) displaying a declining gradient.
11. The method according to any one of claims 9 and 10, wherein the step of evacuating air from the conduit (11) comprises evacuating the air at a location where the conduit (11) crosses the floating coilar (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20150833A NO20150833A1 (en) | 2015-06-25 | 2015-06-25 | Aquaculture Waste Collecting System |
| PCT/EP2016/064560 WO2016207292A1 (en) | 2015-06-25 | 2016-06-23 | Aquaculture waste collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20150833A NO20150833A1 (en) | 2015-06-25 | 2015-06-25 | Aquaculture Waste Collecting System |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO339302B1 NO339302B1 (en) | 2016-11-21 |
| NO20150833A1 true NO20150833A1 (en) | 2016-11-21 |
Family
ID=56413621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20150833A NO20150833A1 (en) | 2015-06-25 | 2015-06-25 | Aquaculture Waste Collecting System |
Country Status (2)
| Country | Link |
|---|---|
| NO (1) | NO20150833A1 (en) |
| WO (1) | WO2016207292A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO342583B1 (en) * | 2017-01-17 | 2018-06-18 | Nofi Tromsoe Eiendom As | Aquaculture plant with aquaculture and waste container |
| NO20170781A1 (en) * | 2017-05-11 | 2018-08-06 | Lift Up As | System for selective waste removal from aquaculture |
| NO20171622A1 (en) * | 2017-10-11 | 2019-04-08 | Lift Up As | System and method for removal of waste from fish cages |
| CN110627274B (en) * | 2019-09-24 | 2021-09-28 | 舟山市海大科学技术研究院有限责任公司 | Aquaculture wastewater treatment device and treatment method |
| GR20200100564A (en) * | 2020-09-16 | 2022-04-18 | Χρυσοβαλαντης Δημητριου Βρακας | Arrangement for the collection of dead fish from fish cages |
| CN112189604B (en) * | 2020-11-09 | 2023-07-25 | 中国水产科学研究院淡水渔业研究中心 | Aquatic offspring seed quantity control system, method for controlling quantity of early-bred shrimp offspring seeds and application |
| CL2022000386A1 (en) * | 2022-02-16 | 2022-09-09 | Envirolift Spa | Settleable solids collecting device for fish culture cage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2145338A1 (en) * | 1995-03-23 | 1996-09-24 | Ralph Rey | Fish farm feed and waste control apparatus, system and method |
| NO329813B1 (en) * | 2009-01-16 | 2010-12-20 | Einar Holmefjord | Device by cage |
| NO332235B1 (en) * | 2010-11-12 | 2012-08-06 | Liftup Akva As | Buoyancy |
| NO332591B1 (en) * | 2011-03-24 | 2012-11-12 | Liftup Akva As | Device for removing waste and dead fish from a farmed cage |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973519A (en) * | 1974-10-07 | 1976-08-10 | Syntex (U.S.A.) Inc. | Screening device in a closed-loop aquaculture system |
| EP1781092A1 (en) * | 2004-06-25 | 2007-05-09 | McRobert, Ian | Aquaculture system |
| NO332592B1 (en) | 2011-06-22 | 2012-11-12 | Liftup Akva As | Collection system for transporting dead fish and / or waste |
| GB2507077B (en) * | 2012-10-18 | 2016-09-21 | Liftup Akva As | Raft for Aquaculture Sea Cage |
-
2015
- 2015-06-25 NO NO20150833A patent/NO20150833A1/en not_active IP Right Cessation
-
2016
- 2016-06-23 WO PCT/EP2016/064560 patent/WO2016207292A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2145338A1 (en) * | 1995-03-23 | 1996-09-24 | Ralph Rey | Fish farm feed and waste control apparatus, system and method |
| NO329813B1 (en) * | 2009-01-16 | 2010-12-20 | Einar Holmefjord | Device by cage |
| NO332235B1 (en) * | 2010-11-12 | 2012-08-06 | Liftup Akva As | Buoyancy |
| NO332591B1 (en) * | 2011-03-24 | 2012-11-12 | Liftup Akva As | Device for removing waste and dead fish from a farmed cage |
| NO335174B1 (en) * | 2011-03-24 | 2014-10-13 | Liftup Akva As | Device and method for avoiding sucking up of live fish from a farmed fish |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016207292A1 (en) | 2016-12-29 |
| NO339302B1 (en) | 2016-11-21 |
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