WO2021032245A1 - Filtre immergé mobile - Google Patents

Filtre immergé mobile Download PDF

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Publication number
WO2021032245A1
WO2021032245A1 PCT/DE2020/100692 DE2020100692W WO2021032245A1 WO 2021032245 A1 WO2021032245 A1 WO 2021032245A1 DE 2020100692 W DE2020100692 W DE 2020100692W WO 2021032245 A1 WO2021032245 A1 WO 2021032245A1
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WO
WIPO (PCT)
Prior art keywords
filter
housing
air
water
area
Prior art date
Application number
PCT/DE2020/100692
Other languages
German (de)
English (en)
Inventor
Amirhossein Karamyar
Kai Lorkowski
Mirko Bögner
Gregor Jähne
Original Assignee
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung filed Critical Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Publication of WO2021032245A1 publication Critical patent/WO2021032245A1/fr

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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
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/045—Filters for aquaria
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to a mobile immersion filter according to the preamble of claim 1.
  • Land-based aquaculture systems offer a sustainable alternative to the production of aquatic animals compared to extraction from natural waters and are becoming increasingly relevant. The main focus in such systems is placed on the welfare of the animals being bred. This is particularly influenced by the water quality. The same applies to the transport of live aquatic animals. Often no separate filter system is provided here.
  • biological filters are used for water treatment, for example to remove ammonium from the water.
  • Biological filters can never be ready for operation immediately after they have been used, since the biology must first settle itself and adapt to the load. To remedy this situation, mobile filters are used, which are also known as quick filters or emergency filters to reduce load peaks.
  • the present invention relates to a mobile immersion filter which, when in operation, is completely immersed in the water to be treated. State of the art
  • GB 2195910 A describes an immersion filter which can be used as a mobile additional filter in a fish tank as a container and is completely surrounded there by water.
  • the known mobile immersion filter has a cylindrical housing which has a housing wall with a housing cover integrated in one piece and a housing bottom which is conically shaped inwards.
  • the water can flow into the housing from the container via several slot-shaped inlet openings which are distributed centrally on the circumference of the housing wall. Furthermore, it can flow back out of the housing into the container via a plurality of slot-shaped outlet openings which are arranged in the center but offset from the inlet openings on the circumference of the housing.
  • an air supply device is arranged, from which air flowing into the housing is introduced.
  • This is, for example, a pipe through which air is brought into the system from outside.
  • the pipe can also end in a basic filter that is permanently present in the system, so that the air then rises from this basic filter into the mobile immersion filter.
  • the air flows through a single inflow opening in the housing bottom from the air supply device into the housing.
  • the air that has flowed in then leaves the housing again through several outflow openings in the integrated housing cover. It flows out of the housing into the container or into the vicinity of the container.
  • a central tube is arranged vertically in the housing, through which water and air can flow from below to above.
  • the air acts as an air lift pump and pulls the water upwards with it. Water and air therefore flow into the central pipe from below.
  • a cylindrical filter made of a solid-phase filter material is arranged around the central tube.
  • a barrier plate is arranged in the middle of the housing. There is a first filter area below the barrier plate and a second filter area above the barrier plate. The first filter area is behind the inlet openings and is drawn from the outside in by the water flows through. The second filter area lies behind the outlet openings and is flowed through from the inside to the outside. In order to get from the first to the second filter area, the water flows through the central pipe. It can be assumed that both filter areas consist of the same solid-phase filter material, since a filter tube is shown. No statement is made about the type of filter.
  • a mobile immersion filter is described with the generic features of the preamble of claim 1.
  • the air is supplied on the underside of the immersion filter via a hose nipple.
  • the water suction device is formed exclusively by the central pipe through which the air flows upwards.
  • the object for the present invention is to develop the known immersion filter in such a way that a particularly fast, efficient and high-quality water treatment of the Water in the container.
  • Two alternative solutions for this task can be found in the two independent claims 1 and 4.
  • Advantageous modifications of the invention are shown in the subclaims and explained in more detail below together with the invention.
  • the second filter area is arranged concentrically around the first filter area.
  • an air hose is provided for the claimed immersion filter, which runs parallel to the central tube and is connected at its upper end to the air supply device.
  • the air hose can be flexible or rigid (“air tube”).
  • an air distribution device is arranged which has several inflow openings for air flowing from the air supply device into the housing and, according to the invention, is connected to the lower end of the air hose and coupled to the central tube. The air flows from the air hose into the air distribution device and from there through the several inflow openings into the central pipe.
  • the filter areas are essential functional areas of the submerged filter used.
  • the first alternative embodiment of the invention provides that the first filter area is arranged around the central pipe and the second filter area is arranged around the first filter area up to the housing wall. So concentric, circumferential filter areas are formed with the central tube in the middle.
  • the second filter area there are several vertical collecting pipes which are arranged, which are closed at their upper end and connected to the central pipe at their lower end. They also form the water suction device and are connected to the central pipe.
  • the collecting pipes have several inlet openings through which water can flow in from both filter areas.
  • the air flowing out of the air distribution device rises in the central pipe and pulls the water out of the collecting pipes via the connection with the air distribution device upwards to the outlet opening in the end pipe.
  • the Water enters both the first filter area and the second filter area.
  • To enter the first filter area several inlet openings are provided in the housing cover around the central tube in the area of the first filter. Entry into the second filter area takes place via several entry openings in the housing jacket, as is already known from the prior art. In this embodiment, however, additional internal transfers of water occur between the filter areas. Therefore, several outlet openings are provided on the first filter area for the water that wants to flow from the first filter area into the second filter area.
  • inlet openings can optionally be arranged in the housing base for an even better entry of the water from the container into the housing. These can preferably be arranged between the header tubes or outside the projection of the header tubes onto the housing base. As a result, the water flows in in the area of the second filter area and does not immediately hit the collecting pipes arranged therein.
  • the outlet openings can also be arranged between the header pipes. In order to enable the water to enter via the housing base, a distance can be provided between the housing base and the container base.
  • the inlet openings in the collecting pipes can furthermore preferably and advantageously be arranged opposite the first filter area. They can be arranged in several vertical rows at the adjacent, narrowest point between the collecting pipe and the first filter area.
  • the two filter areas in the immersion filter in a second alternative of the invention can also be arranged in radial stratification (several radial planes).
  • the first filter area is accordingly arranged around the central tube below the housing cover.
  • the second filter area is then below the first filter around the central tube and above the housing base. Both filter areas extend over the entire cross section of the housing up to the housing wall.
  • the inlet openings for the flowing water from the container into the immersion filter are preferably arranged in the housing cover and in the housing wall in the area of the first filter area. The water is then drawn into the container or into the second filter area exclusively through the first filter area. This enables a particularly effective, step-by-step filtering of the water.
  • a third filter area with a solid-phase filter material is provided between the first filter area and the second filter area.
  • the third filter area can be designed like a cushion, ie the filter material is accommodated in a water-permeable cover like a pad. This prevents mixing with the other materials and enables easy replacement.
  • this third filter area would also be arranged concentrically and would not be so easy to replace.
  • the third filter material can serve to bind ammonia, which can then be easily removed from the immersion filter when the filter is replaced.
  • a filter mat above the water suction device (air lift pump or suction pump) up to Housing wall is arranged over the cross section of the housing. This filter mat is used to mechanically separate the water suction device from the filter materials and not to filter out interfering substances in the water.
  • a water suction device which is connected to the central pipe.
  • the water is sucked in from the housing through the filter areas via this water suction device and fed to the central pipe.
  • a tail pipe is provided at the upper end of the central pipe. This is designed in the manner of a pipe socket.
  • In the housing cover there is preferably and advantageously a through opening through which a tail pipe is passed and protrudes from the housing.
  • the end pipe thus also extends outside the housing.
  • the end pipe has an important function for the claimed immersion filter, since it has a single outlet opening of the immersion filter for water and a single outflow opening of the immersion filter for the air. The outlet opening and the outflow opening are combined to form a common outlet opening.
  • the water and the air can therefore only leave the immersion filter through the single common outlet opening.
  • the outlet opening can be above or below the water level in the container. Since water and air enter the immersion filter at different points, they have to flow through it completely in order to get to the common outlet opening. This results in particularly effective filtering.
  • the water flows through the first filter area and the second filter area.
  • the two filter materials in these two areas are different and differ in terms of their direct filter effect. This achieves a large bandwidth of the immersion filter according to the invention with regard to the substances to be filtered from the water. This results in a particularly good filter effect. This also occurs quickly, as the filter materials have an immediate effect and do not filter bioactively with a time delay through an accumulation of bacteria.
  • the immersion filter according to the invention is completely immersed in the water in the container, so that any supply and discharge lines for the water to be cleaned, as known from flow filters set up outside the container are not applicable.
  • the water to be cleaned is sucked in by the immersion filter during operation, so that it is drawn through the filter materials, and then discharged via the end pipe, the end pipe in an advantageous and preferred modification for both alternatives of the invention also being integral with the Central tube can be formed together.
  • the central tube is therefore simply led out of the housing cover, which enables simple fastening.
  • a suction force is required to suck the water into the immersion filter. This suction force is achieved in the invention by rising air.
  • the principle of the air lift pump is used. Air flows into the water at a low point in the housing.
  • Air lift pumps are extremely simple and do not require a power connection, just an air connection. Air lift pumps can therefore be used well in places without a power supply, for example on transport vehicles.
  • the inflow opening for the air into the housing can be arranged at the upper end of the air hose, which ensures good accessibility.
  • the air connection can, however, be made at any point on the air hose above the air distribution device.
  • the air distribution device is preferably and advantageously designed as a flow stone.
  • Such stones (“outflow stone” - this term is not used here, because the current stone by definition has “inflow openings” for air from the air supply device into the housing) are known from the aquarium hobby and can consist of mineral sand, for example.
  • the outflow stone is porous (manufactured by sand sintering) and has a large number of inflow openings so that the air can flow easily in all directions through the pores into the housing.
  • a multi-way cross piece is provided in this modification, which is designed as a water suction device. It is located near the bottom of the water and has, for example, four suction nozzles that end in a common nozzle in the middle (5-way Support). This common socket is then connected to the central tube.
  • an electric suction pump is preferably and advantageously provided in the area of the housing bottom, which is designed as an air distribution device and a water suction device at the same time.
  • a good suction effect and thus the water to be cleaned being drawn through the filter area is already achieved with the air lift pump described above, which mixes air and water well.
  • the arrangement of an electric pump intensifies this effect.
  • the suction pump has, in addition to a suction opening for water, an additional suction opening for air to which the air hose is connected in its second connection.
  • the electric suction pump enables a significantly higher flow rate through the submersible filter than the air lift pump.
  • an adjustable suction pump the amount of water and air can be controlled and adjusted to the current filtering requirement.
  • both the filtered water and the air flow out of the immersion filter from a single common outlet opening on the end pipe.
  • a mixing distributor for water and air at the outflow opening on the end pipe is provided for both alternative embodiments in order to avoid a fountain beyond the edge of the container or excessive splashing when it exits.
  • the mixing manifold distributes the water and air outside the immersion filter evenly over the container.
  • the mixing manifold can be arranged both above and below the water level in the container be.
  • the stressed immersion filter can be used as a “short-term filter” or “emergency filter” to absorb load peaks that can occur if the existing filter system is not functioning properly or if a filter system is completely absent.
  • the claimed immersion filter can also fulfill this as a “quick filter” because, according to the invention, it shows an immediate, direct filter effect and does not work with a time delay like biofilters.
  • Such biological filters are used in recirculation systems for keeping fish for water treatment, for example to. Remove ammonium from the water. Biological filters can never be ready for immediate use, as biology first has to settle independently and adjust to the load.
  • the claimed immersion filter thus uses zeolite as an ion exchanger, which binds ammonium from the water and can thus remove it. This happens immediately after adding the zeolite to the water. The advantage here arises from the immediate effect, which enables the ammonium to be removed quickly.
  • activated carbon is also used in the system in order to be able to bind further dissolved substances in the water. The zeolite and activated carbon used have a limited absorption capacity. If they are saturated, they can be exchanged accordingly.
  • the filter materials are granular and thus pourable. However, if they remain in saturated form in the water, they can also be colonized by bacteria, in order to become a biofilter itself. Thus, even after the zeolite and the activated carbon have been completely loaded, at least one biological purification can still take place with the immersed filter used.
  • An essential advantage of the immersion filter according to the invention in both alternative embodiments is its compactness. This means that it can easily be used as an additional filter, for example when transporting fish. It is simply placed in the fish tank.
  • flange handles are arranged in the upper region of the housing wall on its outside.
  • two flange handles can be arranged diametrically opposite one another.
  • the housing has a cylindrical design. For example, it can be a simple plastic bucket. Further details on these and other technical aspects can be found in the exemplary embodiments.
  • the immersion filter claimed by the present invention in both alternative versions represents a mobile filter system with which dissolved nutrients, such as ammonium and nitrate, can be easily and reliably removed from the confluence of fish, for example. It can be installed both as an emergency filter in a running circulatory system to remove any load peaks that occur and as a short-term filter to keep animals in a container or basin without water exchange or purification. This can be the case, for example, when carrying out tests. It can also be used as a mobile filter during an animal transport.
  • the main advantage is that the mobile submersible filter can be used immediately in the event of acute need. Compared to changing the water to keep the water values within a good range, the immersion filter is much more environmentally friendly and energy-saving. When the water is changed, the water has to be tempered again and again.
  • the immersion filter can be removed after use and partially regenerated.
  • the zeolite can be regenerated with heat or a salt solution in order to be able to absorb ammonium again afterwards.
  • the 1 shows a schematic cross-sectional view through a first embodiment of the immersion filter (alternative 1)
  • FIG. 2 shows a schematic cross-sectional view of a first detail of the immersion filter according to FIG. 1,
  • FIG. 3 shows a schematic cross-sectional view of a second detail of the immersion filter according to FIG. 1,
  • FIG. 4 shows a schematic view from above into the immersion filter according to FIG.
  • FIG. 5 shows a schematic cross-sectional view of a third detail of the immersion filter according to FIG. 1,
  • FIG. 6 shows a schematic cross-sectional view of a fourth detail of the immersion filter according to FIG. 1,
  • FIG. 7 shows a schematic cross-sectional view through a second embodiment of the immersion filter (alternative 1)
  • FIG. 8 shows a schematic cross-sectional view through a third embodiment of the immersion filter (alternative 2)
  • FIG. 9 shows a schematic cross-sectional view of a first detail of the immersion filter according to FIG. 8,
  • FIG. 10 shows a schematic view from above into the immersion filter according to FIG.
  • FIGS. 8 and 9 show a schematic cross-sectional view of a second detail of the immersion filter according to FIGS. 8 and
  • FIG. 12 shows a schematic cross-sectional view through a fourth embodiment of the immersion filter (alternative 2).
  • the mobile immersion filter 01 has a cylindrical housing 02 which consists of a housing wall 03, a housing cover 04 and a housing base 05.
  • a multiplicity of inlet openings 06 through which water can flow from the container (not shown) into the housing 02 are arranged in the housing 02.
  • an outlet opening 07 is provided through which the sucked-in Water flows back in purified form from the housing 02 into the container.
  • an air supply device 08 via which, when the immersion filter 01 is in operation, air (from an external air source, not shown) is introduced into the housing 02 via an inflow opening 09 arranged in the area of the housing bottom 05.
  • At the upper end of the immersion filter 01 there is also an outflow opening 10, through which the air can flow out of the housing 02 into the container (into the water) or the environment (outside the water) - depending on the position of the outflow opening 10 .
  • the housing 02 is cylindrical and has the dimensions of a water bucket. Furthermore, two diametrically arranged handles 31 (carrying handles) are shown on the outside of the housing wall 03 in the upper area of the housing 02 near the housing cover 04, which are particularly suitable for easy carrying and setting of the immersion filter 01 in the container.
  • a central tube 11 is arranged vertically in the housing 02, through which water and air flow upwards together when in operation.
  • the air rising upwards exerts the effect of an air lift pump on the water as a water suction device 12 and transports the water upwards with it.
  • Water and air enter the central tube 11 at its lower end 13.
  • the water suction device 12 and the central pipe 11 are connected to one another.
  • the immersion filter 01 also has a first filter area 14 with a first filter material 15 and a second filter area 16 with a second filter material 17, the two filter materials 15, 17 differing in their filter effect and filtering different dissolved substances from the water to be cleaned.
  • an air hose 18 is arranged, which at its upper end with the Air supply device 08 and is connected at its lower end to an air distribution device 19 which is arranged in the area of the housing bottom 05 and has several inflow openings 09 for air into the water in the container.
  • the air distribution device 19 is designed as a flow stone 23 (“outflow stone). This is a porous sinter stone made of mineral sand, which is known from aquaristics.
  • the air distribution device 19 is connected to the central tube 11 at its lower end 13.
  • An end pipe 20 is arranged at the upper end 48 of the central pipe 11, it also being possible for this to be formed in one piece with the central pipe 11.
  • the end pipe 20 is passed through a through opening 21 in the housing cover 04 and extends outside the housing 02.
  • the outlet opening 07 and the outflow opening 10 are located on the end pipe 20 and are combined in a common outlet opening 22. From this, after thorough mixing, water and air leave the immersion filter 01 together
  • the first filter area 14 is arranged around the central tube 11, is designed as a hollow cylinder and is delimited by a cylindrical wall 49.
  • the second filter area 16 is in turn arranged around the first filter area 14, has a hollow cylindrical shape and extends to the housing wall 03.
  • the water from the container enters the first filter area 14 via inlet openings 06 which are arranged in the housing cover 04. It enters the second filter area 16 from the first filter area 14 via several outlet openings 36 which are arranged in the wall 49 of the first filter area 14, compare FIGS. 4, 5. This enables the water, the filter area 14, to be cleaned in stages forms the first filter stage, the filter area 16 the second filter stage.
  • the water suction device 12 is formed by collecting pipes 24 which are arranged vertically in the second filter area 16. At their upper end, the collecting pipes 24 have a closure 25. At their lower end, the collecting pipes 24 are connected to the central pipe 11, see also FIG. 4.
  • a manifold 24 is shown in FIG. Several rows of inlet openings 26 can be seen, through which the water from the first filter area 14 and from the second filter area 16 is sucked into the collecting pipes 24 by the air flowing upwards. In the exemplary embodiment shown, three vertical rows of inlet openings 26 are provided, which are arranged at the point in the (cylindrical) collecting pipe 24 that is closest to the first filter region 14 and is closest.
  • FIG. 3 the housing cover 04 is shown separately.
  • a cover disk 27 with the central through opening 21 can be seen.
  • the cover disk 27 has a circumferential groove 30. The water flows in via the inlet openings 06.
  • FIG. 4 shows the immersion filter 01 according to FIG. 1 from above (without the housing cover 04) (view into the housing interior).
  • the cylindrical housing wall 03 and the round housing base 05 can be seen.
  • the air hose 18, which forms the air supply device 08, runs outside the central tube 11 (parallel vertically).
  • the air hose 18 is angled at 3290 ° via a reducer and is led to a connection piece 33 for the external air source.
  • the first filter area 14 and the second filter area 16 are shown, which are arranged concentrically around the central tube 11. In the top view it can be clearly seen that four header pipes 24 are arranged in a cross shape in the second filter region 16.
  • the connection to the central tube 11 takes place in the area of the housing bottom 05 via a multi-way cross piece 34. Shown is a multi-way cross piece with five ways (four inputs, one output). This thus also works as a water suction device 12.
  • the handles 31, which are diametrically opposite one another, are also shown. In FIG. 4, the positions of the various openings are also shown for the selected embodiment. Other arrangements of the openings are also easily possible.
  • the inlet openings 06 are located in the housing wall 03, through which the water flows from the container into the second filter area 16.
  • the inlet openings 06 are arranged in four groups of six vertical rows evenly over the height of the housing wall 03. In this case, however, they are only arranged as high as the second filter area 16 is also filled with filter material.
  • the four groups of the inlet openings 06 are arranged between the collecting pipes 24 or their projection onto the housing wall 03, in order to enable an unimpeded flow of water into the immersion filter 01.
  • These are arranged in four groups (with a triangular arrangement of the inlet openings 35) between the collecting pipes 24.
  • the immersion filter 01 in the container can be placed on a stabilizing substructure or have this (feet, blocks or the like), through which there is a distance between the container bottom and the housing. floor 05 results (not shown).
  • the collecting pipes 24 each have three rows of inlet openings 26 (shown as circles in the wall) for flowing water from the first and second filter areas 14, 16 into the collecting pipes 24, which face the first filter area 14.
  • the first filter area 14 has several outlet openings 36 for flowing water from the first filter area 14 into the second filter area 16. These are each again arranged in a vertical row between the header pipes 24, compare FIG. 5.
  • FIG. 5 only the first filter area 14 up to the wall 49 is shown.
  • the central tube 11 is arranged in the middle. It is connected to the air distribution device 19 (inflow of air, delimitation of the filter area 14 downward) and the collecting pipes 24 (inflow of purified water).
  • the housing cover 04 with the cover disk 27 is shown from above.
  • the central passage opening 21 or the end pipe 20 and several inlet openings 06 for water from the container into the first filter area 14 with the wall 49 can be seen.
  • FIG. 7 shows an embodiment of the submersible filter 01 (alternative 1), in which its flow is supported by an electric suction pump 37 based on the principle of the air lift pump, which structurally integrates the air distribution device 19 and the water suction device 12 united.
  • the suction pump 37 (or the motor) is supplied with power via a power cable 38 and its output can be regulated.
  • the air hose 18 is connected to an air connection on the suction pump 37.
  • the amount of air blown in can be regulated via a regulating valve 44 (see FIG. 12).
  • the suction pump 37 also sucks in air when the water is sucked in; the flow stone 23 according to FIG. 1 is omitted.
  • the suction pump 37 takes over its task.
  • the water is drawn in from the housing 02 via the collecting pipes 24 by a suction connection.
  • Purified water and air are then introduced from the suction pump 37 via a (possibly common) discharge connection into the central pipe 11 and from there into the end pipe 20.
  • the collecting pipes 24 openly end in passages 51 which are arranged in a water-impermeable plate 52.
  • the plate rests on supports 41 and seals off the space 42 around the suction pump 37 in a watertight manner. In this space 42, there are no inlet openings 06 in the housing wall 03 and no further inlet openings 36 in the housing base 05 either.
  • the suction pump 37 draws only the filtered water out of the housing 02 via the collecting pipes 24 in a controllable manner. A short circuit to water in the container is avoided.
  • the first filter area 14 is arranged around the central tube 11 below the housing cover 04.
  • the first filter area 14 extends over the entire cross section of the cylindrical housing 02 within the housing wall 03.
  • the second filter area 16 is arranged below the first filter area 14. It also surrounds the central tube 11 and extends over the entire cross section of the housing 02 up to the housing wall 03.
  • the second filter area ends above the housing bottom 05.
  • the inlet openings 06 for the water sucked in are located in the housing wall 03 in Area of the first filter area 14 and in the housing cover 04, see FIG. 9.
  • the inlet openings 06 in the selected embodiment are evenly distributed in three horizontal, circumferential rows. The water thus flows out of the container into the first filter area 14 and from there into the second filter area 16. This enables the water to be cleaned in stages, the filter area 14 forms the first filter stage, the filter area 16 the second filter stage.
  • a third filter area 39 with a solid-phase filter material is also provided between the first filter area 14 and the second filter area 16. It too surrounds the central tube 11 and extends over the entire cross section of the housing 02 between the cylindrical housing wall 03.
  • the third filter area 39 is an easily exchangeable filter pad 50. This consists of a closed, water-permeable cover into which filter material is filled. This serves, for example, to bind ammonia, which can therefore be easily removed from the immersion filter 01 by changing the filter.
  • the filter material in the second filter area 16 is zeolite, which also binds nitrogen compounds. Ammonium residues arise in the water through unused feed and excretions from the animals in the water.
  • the filter material in the first filter area 14 is activated carbon, which also binds other residues dissolved in the water Food residues and excretions of the contained animals can arise. Both solid phase filter materials are granular and can therefore be easily filled in and exchanged. Replaced filter materials can be disposed of or regenerated. Any remaining saturated filter materials can also remain in the immersion filter 01 and act as a bacterial biological filter.
  • a stable filter mat 40 is also arranged on a plurality of supports 41 along the housing wall 03, this likewise extends over the entire cross section of the housing 02 and keeps the space 42 below free of granular filter materials from the filter area 16.
  • the air distribution device 19 in the form of the flow stone 23 is located in this space 42.
  • the water-sucking multi-way cross piece 34 (5 ways), the ends of which are now open. With the axial stratification of the two filter areas 14, 16, the collecting pipes 24 are omitted since the water can flow very well through the filter areas 14, 16 even without collecting pipes 24 due to the chosen structural geometry.
  • FIG. 9 the housing cover 04 is shown, in which the end pipe 11 is fixed by means of a tank bushing 43.
  • the supports 41 and the multi-way cross piece 34 (5 ways) can be clearly seen.
  • 11 shows a large number of evenly distributed inlet openings 06 in the housing cover 04 and the tank duct 43 from above.
  • FIG. 12 shows an embodiment of the claimed immersion filter 01 with a radial layering of the two filter areas 14, 16 and an additional electric suction pump 37 in the protected space 42 (alternative 2).
  • Reference characters not shown here can be found in the preceding figures.
  • the air hose 18 and the control valve 44 for the amount of air flowing in from the external air source and the power cable 38 with a control device 45 and a mains plug 46 for the suction pump can be seen 37.
  • a cross-shaped (four outlets) mixing manifold 47 is shown at the common outlet opening 22 at the end of the end pipe 11, via which air and water are evenly discharged into the container or the environment.
  • the dimensions of the mobile immersion filter 01 claimed by the invention are in the range of a normal water bucket.
  • the housing 02 has, for example, an outside diameter of approximately 32 cm.
  • the simple setting of the immersion filter 01 in a container is thus possible without any problems.
  • Most of the parts of the immersion filter 01 are made of plastic (primarily polyvinyl chloride PVC), in particular many semi-finished products that are easily available commercially are also used. This also applies to other components of the immersion filter 01.
  • the mobile immersion filter 01 claimed by the invention shows very good manageability and mobility and can be used particularly well as kos - Inexpensive, efficient and immediately operational short-term filters, quick filters, load filters or emergency filters are used, especially when transporting aquatic animals.
  • Inlet opening for water from the container in 02
  • Outlet opening for water from 02 into the container
  • Air supply device Inlet opening for air in 02
  • Inlet opening (internal for water from 14, 16 into 24)

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Les filtres immergés connus comportant deux zones filtrantes destinées à éliminer des substances nutritives et des déjections d'animaux aquatiques dissoutes dans l'eau dans un récipient ne sont fréquemment pas assez rapides ou efficaces. Lors de transports, les systèmes filtrants sont fréquemment totalement absents. Le filtre immergé (01) selon l'invention présente un tuyau d'air (18) parallèle au tube central (11) et en variante des zones filtrantes (14, 16) concentriques (variante 1) ou des zones filtrantes (14, 16) en couches dans le sens radial (variante 2). Dans la configuration concentrique, des tuyaux collecteurs (24) sont en outre prévus dans la seconde zone filtrante (16). La circulation d'eau s'effectue selon le principe de la pompe à émulsion d'air, dans le cas présent également sans connexion électrique pour permettre une utilisation mobile et éventuellement de manière assistée au moyen d'une pompe d'amorçage (37) électrique, ce qui présente l'avantage de permettre une bonne aptitude à la régulation. L'eau purifiée sort du filtre immergé (01), conjointement avec l'air introduit pour oxygéner l'eau, par l'intermédiaire d'un orifice de sortie (22) commun au niveau de la tubulure finale (20), ce qui permet d'obtenir un très bon mélange dans le filtre immergé (01). Celui-ci est extrêmement compact (taille d'un seau d'eau), aisé à manipuler et prêt pour une utilisation immédiate. Dans les deux variantes du mode de réalisation, le filtre immergé (01) se prête à servir en particulier de filtre de charge ou de secours lors du transport d'animaux aquatiques dans des récipients.
PCT/DE2020/100692 2019-08-19 2020-08-05 Filtre immergé mobile WO2021032245A1 (fr)

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DE102019122146.3A DE102019122146B3 (de) 2019-08-19 2019-08-19 Mobiler Tauchfilter

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2809129A1 (de) * 1978-03-03 1979-09-06 Roland Hagemann Aquariumsfilter
DE8110747U1 (de) 1981-04-09 1981-09-24 Erwin Sander Elektroapparatebau GmbH & Co KG, 3151 Eltze Biologischer aquarienfilter
GB2195910A (en) 1986-09-22 1988-04-20 Tong Chi Lok Fishtank filter
DE3812704A1 (de) 1988-04-16 1989-10-26 Baensch Tetra Werke Innenfilter fuer aquarien, gartenteiche und dergleichen
US20120241385A1 (en) 2009-08-13 2012-09-27 Water Harvesting Technologies Pty Ltd Water filtration sytem with activated carbon and zeolite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2809129A1 (de) * 1978-03-03 1979-09-06 Roland Hagemann Aquariumsfilter
DE8110747U1 (de) 1981-04-09 1981-09-24 Erwin Sander Elektroapparatebau GmbH & Co KG, 3151 Eltze Biologischer aquarienfilter
GB2195910A (en) 1986-09-22 1988-04-20 Tong Chi Lok Fishtank filter
DE3812704A1 (de) 1988-04-16 1989-10-26 Baensch Tetra Werke Innenfilter fuer aquarien, gartenteiche und dergleichen
US20120241385A1 (en) 2009-08-13 2012-09-27 Water Harvesting Technologies Pty Ltd Water filtration sytem with activated carbon and zeolite

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