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WO1985004306A1 - Dispositif de filtration pour aquarium - Google Patents

Dispositif de filtration pour aquarium Download PDF

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Publication number
WO1985004306A1
WO1985004306A1 PCT/DE1984/000066 DE8400066W WO8504306A1 WO 1985004306 A1 WO1985004306 A1 WO 1985004306A1 DE 8400066 W DE8400066 W DE 8400066W WO 8504306 A1 WO8504306 A1 WO 8504306A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
drum
blades
filter
hollow cylinder
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE1984/000066
Other languages
German (de)
English (en)
Inventor
Adolf Neuhaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority to DE3238366A priority Critical patent/DE3238366C2/de
Application filed by Individual filed Critical Individual
Priority to EP84901327A priority patent/EP0175681A1/fr
Priority to PCT/DE1984/000066 priority patent/WO1985004306A1/fr
Priority to DE84DE8400066T priority patent/DE3490685D2/de
Publication of WO1985004306A1 publication Critical patent/WO1985004306A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/082—Rotating biological contactors
    • 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 filter device for aquaria for cleaning contaminated water, comprising a filter housing with a filter drum rotatably mounted about a horizontal axis therein, which has turbine-like blades, an inlet for contaminated water and an outlet for the filtered water Water.
  • Filter devices for aquariums are known in a variety of designs. They are used to mechanically purify water, chemically detoxify it and / or enrich it with oxygen.
  • a filter device known from DE-GM 74 09 698 a container which is closed on all sides and is filled with filter materials is provided. The container has an intake for at one end
  • the container is divided into several chambers by means of water-permeable partition walls, which are filled with different filter materials.
  • the container is placed in an aquarium and completely surrounded by the water to be cleaned.
  • a filter screen drum provided with a rotary drive is provided. It is supplied with dirty water axially. The dirty water flows radially outwards due to the rotary movement. The dirt collects on the filter that is inside the drum. From there the dirt is wiped off.
  • the object of the invention is to create a filter device for aquariums which, on the one hand, makes it possible to remove and mineralize dissolved and undissolved organic compounds from contaminated water by biological and mechanical means, whereby there is to be dispensed with a special drive which, on the other hand, also enables easy handling and cleaning, the filter materials also constantly cleaning and reactivating themselves when the filter device is in operation.
  • the invention proposes that the filter drum has an inner hollow cylinder concentrically surrounding the axis, that the blades are approximately tangential to the
  • the filter drum is held in such a way that it is submerged in water over part of its cross section and partly in the atmospheric air.
  • said blades being acted upon by from flowing above the Wasser ⁇ mirror arranged inlet water, 'which water through the blades and the cheeks of the drum formed radially outwardly open chambers is accommodated, which chambers are at least partially filled with flowing from the inlet water when the respective chamber reaches the water level of the housing, and are completely emptied of water, when the respective chamber emerges from the water and is in atmospheric air, that in the area of the drum that alternately into the water or Atmospheric air immersed, filter materials in the form of Bak teria carrier material is held.
  • the device known from DE-OS 28 23 920 ' for purifying biodegradable wastewater is also unusable for filter devices for aquariums, since a large number of filter stages are necessary there in order to clean contaminated water accordingly to reach while. in this known device, however, it already has a separate drive for the rotatable filter body can be dispensed with if a sufficiently high flow velocity can be achieved in the inflow region. This device cannot be used in aquariums.
  • the invention proposes that the housing of the hollow cylinder is divided into chambers which are filled with the bacterial carrier material and which are filled with the bacterial carrier material, and the hollow cylinder with essentially radially extending, opposite the cylinder jacket by intermediate walls extending outwardly from an inner hollow cylinder blades inclined against the direction of rotation are provided, which are adversely affected by the incoming contaminated water above the water level in the direction of rotation, and bores are provided in the cylinder jacket.
  • the removal or mineralization of the dissolved and undissolved organic compounds takes place by oxygen-loving (aerobic) bacteria and and the mechanical separation of contaminants from the water cycle.
  • OMPI preferred environmental conditions for the bacteria are striven for in terms of biological performance.
  • the best environmental conditions for the aerobic bacterial strains are based primarily on three factors, namely moisture, oxygen and heat. These basics are created in that any bacterial carrier material, in particular for reasons of weight made of plastic or the like, is alternately brought into contact with the contaminated water and atmospheric air.
  • the constant and sufficient supply of atmospheric oxygen is namely essential for the biological performance of a certain quantity of bacteria.
  • the partition walls desludge the treatment chamber of the hollow cylinder with the escaping water. This ensures that the bacterial carrier material is completely lifted out of the water during the rotary movement of the hollow cylinder and thus can be completely penetrated by atmospheric oxygen.
  • a preferred exemplary embodiment is characterized in that the intermediate walls extending from the inner hollow cylinder approximately tangentially to the radially outward are bent at the outer mouth edge approximately tangentially to the circumference of the drum against the direction of rotation thereof, and the blades form that the bacterial carrier material in the form of a ring part the ends of the blades are placed and that the bacterial carrier material is formed from a layer of water-permeable synthetic fiber material.
  • the bacterial carrier material lies in the form of a ring part on the outside of the drum, being held by the ends of the blades.
  • the bacterial carrier material can preferably consist of polyacrylic fibers in order to achieve a large filter surface.
  • the bacterial carrier material can be applied in several layers or also in a thicker layer in the form of a ring part.
  • OMPI has the particular advantage that the incoming contaminated water must in any case completely flow through the bacterial carrier material before entering the respective chamber to produce the rotary movement of the drum.
  • the incoming water also comes into very intensive contact with atmospheric oxygen, because the incoming water is finely distributed when it flows through the bacterial carrier material.
  • the respective chamber empties again through the bacterial carrier material, the emptying essentially taking place within the space of the container filled with water. Because of the low speed of rotation of the drum, swirling in the housing is largely prevented, so that precipitated suspended matter and the like sink to the bottom and can collect in a corresponding chamber.
  • the substrate also forms an adhesive surface for bacteria and for taking water with it when it emerges from the water in the housing and when it passes through the area in the atmospheric air, so that there is another intensive bacterial processing can take place.
  • the usual speed of a drum in such a filter device is one revolution per minute.
  • the formation of the ring part also has the effect that the atmospheric oxygen can access virtually all of the bacteria in the bacterial carrier material, so that the bacteria are very well supplied with oxygen. Due to the good oxygen access, at least on the outside, an oxygen excess is produced at least on the surface of the ring part, whereas there may be a certain lack of oxygen inside the ring part.
  • the bacteria inside extract oxygen from the nitrate (N0 3 ) converted by the bacteria, so that the nitrate is removed from the water approximately according to the formula 2N0 3 - »N_ + 30 . •
  • Figure 1 is a schematic side view of a filter device for aquariums.
  • FIG. 2 shows an end view of the device shown in FIG. 1;
  • FIGS. 1 and 2 shows a plan view of the device according to FIGS. 1 and 2;
  • the filter device for aquariums chosen as an exemplary embodiment in FIGS. 1 to 3 for treating organically and mechanically contaminated water is enclosed by a housing 1.
  • the housing 1 is covered by a cover 11. It is therefore closed on all sides to largely avoid heat loss.
  • the housing 1 is attached to the wall 2 of an aquarium.
  • the housing 1 is provided with an adjusting screw 12 in order to ensure its essentially vertical suspension.
  • the housing 1 is divided into a treatment chamber A, a collecting chamber B and a clear water chamber C.
  • the collecting chamber B is separated from the treatment chamber A by an intermediate floor 13 and is formed between the intermediate floor 13 and the floor 14 of the housing 1.
  • the intermediate floor 13 'runs essentially horizontally. In the area of the entrance to the collecting chamber B, it is angled in the direction of the treatment chamber A.
  • the bottom 14 runs obliquely downwards from the entrance to the collecting chamber B. An opening slot is thus formed at the entrance between the intermediate floor 13 and the floor 14.
  • the dirt particles D accumulate at the lowest point of the bottom 14.
  • bearings 15 are provided for receiving a hollow cylinder 3, which rotates in the treatment chamber A.
  • the hollow cylinder 3 is provided for receiving a hollow cylinder 3, which rotates in the treatment chamber A.
  • the aerobic bacteria - nitrification bacteria - are supplied with atmospheric oxygen.
  • the hollow cylinder 3 has a water- and air-permeable housing 31, which is partly inside the contaminated water E and partly in atmospheric air F.
  • the hollow cylinder 3 is filled with a bacterial substrate G. With each revolution of the hollow cylinder, this bacterial substrate G inevitably comes into contact with the contaminated water E and the atmospheric air F.
  • Further bores can be provided in the cylinder jacket.
  • the contaminated water E enters the hollow cylinder 3 through the bores 33 and the openings 34 and comes into contact with the bacterial carrier material G there.
  • the atmospheric air F comes into contact with the bacterial carrier material G when the respective part of the hollow cylinder 3 exceeds the level of the contaminated water E. increases.
  • the housing 31 It is advantageous to divide the housing 31 into chambers in order to achieve a uniform distribution of the bacterial carrier material G.
  • the division can take place in the form of a sector starting from an inner hollow cylinder or, as in the exemplary embodiment, by means of tangential partition walls running outwards.
  • the purpose of the inner hollow cylinder is to ensure that the bacterial carrier material G is completely lifted out of the water during the rotational movements of the hollow cylinder 3. This prevents putrefaction from developing.
  • the hollow cylinder 3 is provided with essentially radially extending blades 36 which are inclined with respect to the cylinder surface against the direction of rotation and which are acted upon by the incoming contaminated water E above the water level in the direction of rotation. If the cylinder jacket is also provided with bores for the air and water supply, these are provided in the area behind every second blade 36. The space behind every first blade remains closed for the drive.
  • Lifters 4 are provided for the supply of the contaminated water E, the removal of the purified water H and the water movement within the container 1.
  • the contaminated water E is supplied via a water lifter 41.
  • the outlet opening of the water siphon 41 lies in the region of the hollow cylinder part moved in the downward direction.
  • the water E reaches the blades 36 and creates an imbalance on the hollow cylinder 3, which causes the rotary movement.
  • the water lifter 41 is arranged outside the container 1. As a rule, a higher riser pipe height and thus a higher water circulation capacity are achieved.
  • the angled free end of the intermediate floor 13 rests in the manner of a tangential flat. In this area, the dirt particles are pushed away from relatively rapidly flowing water into slowly flowing or standing water. The undissolved dirt particles are separated in this way. D. The freely moving water molecules create a higher internal friction in the fast flowing water. The dirt particles migrate to areas with less internal friction.
  • An insertable filter cassette 5 is provided between the treatment chamber A and the clear water chamber C.
  • the aftertreatment of the water biologically processed in the hollow cylinder 3 takes place in the filter cassette 5.
  • the filter cassette 5 removes non-biodegradable substances by means of activated carbon, exchange resins and the like.
  • the filter cassette 5 can also be used to supply other desired substances, such as peat fibers or the like.
  • a temporarily operating water siphon 42 is provided between the lowest point of the collecting chamber B and a part of the filter cassette arranged above the water level.
  • the water siphon 42 works in the secondary flow. With this internal small and temporarily working water lifter 42, the dirt particles D separated in the collecting chamber B are sucked off and brought to a carrier material I above the water level and collected there.
  • the undissolved dirt particles D are thus constantly removed from the circuit and easily removed, which also makes further biological or other processing unnecessary.
  • the biologically and mechanically processed water can be chemically treated in the clear water chamber C. This is done by an additional small water lifter 43 which is operated with air containing ozone. The water lifter 43 also works in the secondary flow. So that no excess ozone can get out of the container 1, the water outlet is led into the filter cassette 5. When using ozone, the filter cassette is filled with activated carbon, which reduces excess ozone.
  • the cleaned water H is returned to the aquarium, where it is mixed again with the water K present there, via a suction lifter 44.
  • the reverse process is usual, the contaminated water being supplied to an external filter by suction lifters.
  • the return to the aquarium is then carried out by air-operated water lifters. Since the external filter is usually smaller and lower than the aquarium, the water lifter cannot be made high enough.
  • the water column located therein becomes through the air pearls in the riser pipe
  • the full aquarium height can be used in the invention.
  • the suction lifter 44 is provided with a valve 45 on the top, which enables the suction of air.
  • water supplied to the aquarium can be drained off without the container 1 overflowing.
  • the construction of the device is selected so that a free water flow is guaranteed in the main stream. This prevents the water to be cleaned from being forced through dirty filter materials, with the very disadvantageous effects of undesired oxygen deprivation and a shift in the biological conditions towards reduction.
  • the extracted oxygen must then be fed in again by very high circulation rates.
  • FIGS. 4 to 6 a preferred variant of the filter device is shown in the same way and provided with the same reference numerals in the case of matching parts.
  • the hollow cylinder 3 is formed with laterally closed walls and provided with blades which are oriented approximately tangentially to an inner hollow cylinder, the inner hollow cylinder being designed as a polygon.
  • the blades end radially on the outside in a bend which is approximately tangential to the outer circumference of the hollow cylinder 3.
  • the bacterial substrate G is applied in the form of a ring part to the bent ends of the blades 36, which ring part
  • OMPI can consist of polyacrylic fibers or a mat-like structure.
  • the ring part is at least slightly resilient due to the choice of material, so that it can be placed on the drum or ends of the blades 36 with a slight widening and, after correct positioning, contracts again due to its own resilience so that it is non-positive rests on the ends of the blades 36.
  • the corresponding bent ends of the blades 36 form very good supports for the ring part made of substrate G, so that this substrate cannot be damaged by sharp edges or ends.
  • the blades 36 form receiving chambers for the inflowing water E, so that these chambers, as can be seen particularly clearly on the right in FIG. 4, can be filled excellently and can thus lead to a driving force due to imbalance.
  • the contaminated water E is supplied via the water lifter 41 by a centrifugal pump 6, which continuously draws water from the aquarium and transports it into the housing 1 via the water lifter 41 in the manner shown. " The water is returned via a siphon 44 in the same way as described in the exemplary embodiment according to FIGS. 1 to 3.
  • the intermediate floor 13 is also perforated, so that dirt particles and the like B can collect below the intermediate floor 13 on the floor 14 of the housing 1.
  • the bottom 14 is arched so that a receptacle for the dirt particles D is formed.
  • the dirt particles D can be sucked off by means of a hose or, as shown in the exemplary embodiment in FIGS. 1 to 3, removed periodically.
  • the invention is not limited to the exemplary embodiments, but is variable in many ways within the scope of the disclosure.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Animal Husbandry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Farming Of Fish And Shellfish (AREA)

Abstract

Ce dispositif de filtration comprend un boîtier dans lequel tourne un tambour de filtration ayant des pales similaires à celles d'une turbine, une amenée d'eau polluée et un écoulement pour l'eau filtrée. Dans le but d'obtenir une bonne filtration, un cylindre creux (3) est placé à l'intériure du tambour, les pales (36) sont disposées dans une direction tangentielle par rapport à la surface intérieure du cylindre et se terminent à peu près sur l'extérieur du périmètre du tambour et sont inclinées contre son sens de rotation. Le tambour de filtration est fixé de telle manière qu'une partie de sa section plonge dans l'eau (A) et qu'une autre partie se trouve dans l'air atmosphérique (F), pendant que les pales (36) sont alimentées par l'amenée (41) d'eau (E) située au dessus du niveau d'eau. L'eau à purifier pénètre dans les chambres radiales et ouvertes vers l'extérieur et formées par lesdites pales (36) et les parois latérales du tambour; sur le tambour qui plonge et sort alternativement de l'eau sont fixées les substances de filtration sous la forme d'un support de base bactérien (G).
PCT/DE1984/000066 1982-10-16 1984-03-22 Dispositif de filtration pour aquarium Ceased WO1985004306A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE3238366A DE3238366C2 (de) 1982-10-16 1982-10-16 Vorrichtung für Aquarien zur Behandlung verunreinigter Wässer
EP84901327A EP0175681A1 (fr) 1982-10-16 1984-03-22 Dispositif de filtration pour aquarium
PCT/DE1984/000066 WO1985004306A1 (fr) 1982-10-16 1984-03-22 Dispositif de filtration pour aquarium
DE84DE8400066T DE3490685D2 (en) 1982-10-16 1984-03-22 Filter device for aquarium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3238366A DE3238366C2 (de) 1982-10-16 1982-10-16 Vorrichtung für Aquarien zur Behandlung verunreinigter Wässer
PCT/DE1984/000066 WO1985004306A1 (fr) 1982-10-16 1984-03-22 Dispositif de filtration pour aquarium

Publications (1)

Publication Number Publication Date
WO1985004306A1 true WO1985004306A1 (fr) 1985-10-10

Family

ID=25805152

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1984/000066 Ceased WO1985004306A1 (fr) 1982-10-16 1984-03-22 Dispositif de filtration pour aquarium

Country Status (3)

Country Link
EP (1) EP0175681A1 (fr)
DE (2) DE3238366C2 (fr)
WO (1) WO1985004306A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0542755A4 (en) * 1990-06-11 1993-09-22 Aquaria, Inc. Rotating biological aquarium filter system
WO1995008512A1 (fr) * 1993-09-22 1995-03-30 Aquaria, Inc. Systeme de filtre biologique rotatif
US5419831A (en) * 1990-06-11 1995-05-30 Aquaria, Inc. Rotating biological aquarium filter system
US5603831A (en) * 1994-05-24 1997-02-18 Aquaria, Inc. Dual impeller pump
US5779885A (en) * 1990-06-11 1998-07-14 Aquaria, Inc. Rotating biological filter system
US5868926A (en) * 1990-06-11 1999-02-09 Aquaria, Inc. Rotating biological filter system
US6245236B1 (en) 1999-05-26 2001-06-12 Cercona Of America Inc. Reciprocating biological filter
CN104355399A (zh) * 2014-11-13 2015-02-18 东南大学 一种跌水充氧自驱动生物转盘
CN112221232A (zh) * 2020-09-10 2021-01-15 张敏 一种用于污水处理的杂质初级处理装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3238366C2 (de) * 1982-10-16 1985-05-09 Adolf Ing.(grad.) 5828 Ennepetal Neuhaus Vorrichtung für Aquarien zur Behandlung verunreinigter Wässer
FI80070C (fi) * 1985-04-04 1990-04-10 Lujari Instmsto Oy Anordning foer rening av vatten, speciellt avfallsvatten, med en biologisk oxidationsmetod och anvaendning av anordningen foer rening av gaser.
GB2284807B (en) * 1993-12-16 1997-10-15 Pet Mate Ltd Aquarium filter
CN110803795B (zh) * 2019-10-12 2022-04-12 湖南洞庭环保科技有限公司 一种便于拆卸除杂的污水处理过滤装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157303A (en) * 1977-08-23 1979-06-05 Dengyosha Machine Works, Ltd. Biological waste water treatment apparatus and a method of producing the same
DE3201958A1 (de) * 1981-01-26 1982-09-02 Hellmuth Dipl.-Ing. Dr. 1238 Wien Wachtel Geraet zur biologischen reinigung von aquarienwasser
DE3238366A1 (de) * 1982-10-16 1984-04-19 Adolf Ing.(grad.) 5828 Ennepetal Neuhaus Vorrichtung zur behandlung verunreinigter waesser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472764A (en) * 1968-02-05 1969-10-14 Neptune Microfloc Inc Sewage treatment method and plant
DE2729341A1 (de) * 1977-03-18 1978-09-21 Ici Ltd Vorrichtung und verfahren zur biologischen behandlung von abwasser
IT1092711B (it) * 1978-01-06 1985-07-12 Cissello Olga Procedimento e impianto per la depurazione di acque reflue biodegradabili

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157303A (en) * 1977-08-23 1979-06-05 Dengyosha Machine Works, Ltd. Biological waste water treatment apparatus and a method of producing the same
DE3201958A1 (de) * 1981-01-26 1982-09-02 Hellmuth Dipl.-Ing. Dr. 1238 Wien Wachtel Geraet zur biologischen reinigung von aquarienwasser
DE3238366A1 (de) * 1982-10-16 1984-04-19 Adolf Ing.(grad.) 5828 Ennepetal Neuhaus Vorrichtung zur behandlung verunreinigter waesser

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0542755A4 (en) * 1990-06-11 1993-09-22 Aquaria, Inc. Rotating biological aquarium filter system
US5419831A (en) * 1990-06-11 1995-05-30 Aquaria, Inc. Rotating biological aquarium filter system
US5423978A (en) * 1990-06-11 1995-06-13 Aquaria Inc. Rotating biologic aquarium filter system
US5679253A (en) * 1990-06-11 1997-10-21 Aquaria, Inc. Rotating biological aquarium filter system
US5779885A (en) * 1990-06-11 1998-07-14 Aquaria, Inc. Rotating biological filter system
US5853591A (en) * 1990-06-11 1998-12-29 Aquaria, Inc. Rotating biological aquarium filter system
US5868926A (en) * 1990-06-11 1999-02-09 Aquaria, Inc. Rotating biological filter system
WO1995008512A1 (fr) * 1993-09-22 1995-03-30 Aquaria, Inc. Systeme de filtre biologique rotatif
US5603831A (en) * 1994-05-24 1997-02-18 Aquaria, Inc. Dual impeller pump
US6245236B1 (en) 1999-05-26 2001-06-12 Cercona Of America Inc. Reciprocating biological filter
CN104355399A (zh) * 2014-11-13 2015-02-18 东南大学 一种跌水充氧自驱动生物转盘
CN112221232A (zh) * 2020-09-10 2021-01-15 张敏 一种用于污水处理的杂质初级处理装置

Also Published As

Publication number Publication date
DE3490685D2 (en) 1986-04-10
DE3238366A1 (de) 1984-04-19
DE3238366C2 (de) 1985-05-09
EP0175681A1 (fr) 1986-04-02

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