Technical Field

The present invention relates to a microorganism filtering device for a fishpond, an artificial fishpond and a microorganism filtering method for a fishpond.

Background Art

Water in an existing artificial sight-seeing fishpond needs to be renewed to improve the oxygen content, discharge fish excrement and residual fish bait, prevent water pollution and fish diseases. To save water resources and reduce the amount of discharged water, a solution of recycling water of a culture pond is proposed. Physical and chemical filtering needs to be performed to the pond water to meet the requirements for cultivating fish. Physical filtering can effectively solve the problem of fermenting of fish excrement and residual fish bait, which will consume oxygen and generate harmful substances. Existing filtering devices are disposable. And the filter mesh diameter is hard to select. If it is excessively large, useful substances in the fish pond may be filtered; and if it is excessively small, filtering will not be complete.

Considering the above defects, the inventor of the present invention aims to provide a novel fish pond filter, which has greater industrial application value.

Summary of the Invention

To solve the above problems, one objective of this invention is to provide a microorganism filter capable of filtering fish pond water.

The problem of the present invention is solved by the subject-matters of the independent claims, wherein further embodiments are incorporated in the dependent claims. It should be noted that the aspects of the invention described in the following apply also to the microorganism filtering device for a fishpond, the artificial fishpond and the microorganism filtering method for a fishpond.

According to the present invention, a microorganism filtering device for a fishpond is presented.

The microorganism filtering device comprises a first chamber, a first filtering material provided in the first chamber, a water inlet into the first chamber, a second chamber separated from the first chamber, a plurality of water channels connecting the first chamber and the second chamber, a second filtering material provided in the second chamber, and a water outlet leaving the second chamber. The first filtering material is provided as a plurality of filler columns and the second filtering material is provided as a plurality of filler lumps.

In an example, the first chamber has a round cross section and the water inlet is arranged relative to the first chamber to provide a tangential flow of water in the first chamber and a vortex effect of water within the first chamber. Also a housing of the microorganism filtering device may have a round cross section. In an example, the first filtering material is arranged in the first chamber to filter solid particles out of the water flowing from a center of the first chamber to its

circumference and wherein a waste discharging outlet is arranged in the center of the first chamber for discharging the filtered solid particles.

In an example, the water inlet into the first chamber is arranged below the first filtering material provided in the first chamber. As a result, the first filtering material is arranged above the water inlet into the first chamber so that waters enters the first chamber below the first filtering material. In an example, a diameter of the water inlet into the first chamber is dimensioned to limit a water flow into the first chamber to less than 0.5 m/sec. Such low speed may be achieved by a rather large diameter of the water inlet.

In an example, the first chamber is arranged above the second chamber, so that the plurality of water channels connecting the first chamber and the second chamber guide water by means of a gravity system by means of a pump system. The microorganism filtering device may be driven by a pump arranged before (pump system) or after the filtering device (gravity system). In an example, the filler columns are vertically arranged in the first chamber in a staggered mode. The filler columns may be similar to each other or of different material, size, porosity and the like. In particular, the filler columns may be arranged as a first ring of a first kind and as a second ring of a second kind.

In an example, the filler lumps are disc-shaped, each vertically aligned and arranged adjacent to each other in the second chamber. The filler lumps may comprise e.g. sintered glass. For example, the filler lumps may have an active surface of 3000 m ² /m ³ . The second chamber may contain less oxygen than the first chamber leading to nitrification and reverse nitrification of particles into volatile nitrogen. The bacteria used in filler columns may be different from the bacteria used in the filler lumps. In an example, the filler columns and the filler lumps comprise biological fillers comprising biological membranes for biological decomposition, nitrification and reverse nitrification of particles solved in the water into volatile nitrogen by means of bacterial oxidation.

In an example, the second chamber is separated from the first chamber by a baffle plate.

According to the present invention, also an artificial fishpond comprising a water basin and a microorganism filtering device as described above is presented.

According to the present invention, also a microorganism filtering method for a fishpond is presented. The method comprises the following steps not necessarily in this order:

- guiding water through a first filtering material provided in the first chamber,

- guiding water through a plurality of water channels connecting the first chamber and a second chamber, and

- guiding water through a second filtering material provided in the second chamber.

The first filtering material is provided as a plurality of filler columns and the second filtering material is provided as a plurality of filler lumps.

A technical embodiment of this invention may be as below:

A microorganism filter comprising a filter housing with a hollow chamber and in which a baffle plate is arranged to divide the hollow chamber into a first chamber and a second chamber, the microorganism filter being characterized by further comprising:

a first filtering mechanism located in the first chamber and in which multiple biological fillers are disposed;

a drain pipe, at least a portion of which is located in the first chamber, with one end of the drain pipe extending out of the housing and the other end thereof passing through the baffle plate to communicate with the second chamber;

a water discharging pipe, at least a portion of which is located in the second chamber, with one end of the water discharging pipe extending out of the housing;

a water outlet pipe, with one end thereof in communication with the first filtering mechanism, and the other end thereof passing through the baffle plate to communicate with the second chamber; and a second filtering mechanism located in the second chamber and in which biological filtering stones are disposed.

Further, the exemplary microorganism filter further comprises a water inlet disposed externally relative to the first chamber of the filter housing and tangentially connected to the filter housing. Further, the exemplary filter housing further comprises a top cover configured to form a closed structure together with the first chamber. Further, the exemplary filter housing is provided with a plurality of buckles for fixing the top cover. Further, the exemplary top cover is provided with a top cover handle.

Using the above embodiment, this invention may have the following advantages:

The water inlet of this invention is tangentially connected to the filter housing. Water flow from the water inlet tangentially flows into the circular filter housing. Eddy flow generated by the water flow allows pollution particles of a large diameter to deposit, thereby removing the pollution particles of a large diameter using a simple method.

The first filtering mechanism of this invention is provided with biological fillers. Organic solutes of small particles, after biological decomposition, nitrification and reverse nitrification processes by an inner biological membrane of the biological fillers, are transformed into nitrogen and discharged into the air.

The second filtering mechanism of this invention is provided with biological filtering stones. Using the biological filtering stones for second filtering, organic solutes of small particles, after biological decomposition, nitrification and reverse nitrification processes by an inner biological membrane of the biological filtering stones, are transformed into nitrogen and discharged into the air.

The above description is only an embodiment of the technical solution of this invention. To clearly describe the technical solution of this invention, preferred embodiments are described with reference to the drawings so that this invention can be implemented according to the description. Description of the Drawings

Figure 1 is a schematic view of this invention;

Figure 2 is a schematic view of the primary filter of this invention.

Embodiments

The exemplarily embodiments of this invention are described in detail with reference to the drawings. The following embodiments are used to describe this invention rather than to limit the scope thereof.

Figure 1 shows a microorganism filter according to a preferred embodiment of this invention. The microorganism filter comprises a cylindrical filter housing 2 and a top cover 1 disposed on the filter housing 2. The top cover 1 is fixed to filter housing through buckles 3, and is provided with a top cover handle 11 for opening and closing the top cover. The filter housing is provided with a water inlet 4 and a water outlet 5. To detect ambient humidity, a humidity display is provided on the top cover 1 of this invention.

Figure 2 is a sectional view of the filter of this invention. The filter housing 2 is a hollow chamber, and is provided with a baffle plate 9 for separating the filter housing into a first chamber and a second chamber. The first chamber forms a closed structure with the top cover 1. The baffle plate 9 is provided with multiple water discharging pipes 6. One end of the water discharging pipe 6 is in communication with a first filtering mechanism, and the other end thereof passes through the baffle plate 9 and is in communication with the second chamber. The first filtering mechanism is provided in the first chamber and comprises a biological filler 7. One end of the water discharging pipe 6 is provided inside the biological filler 7. The baffle plate 9 is further provided with a waste discharging pipe 10. At least a portion of the waste discharging pipe 10 is located in the second chamber. One end of the waste discharging pipe 10 extends out of the filter housing 2, and the other end thereof passes through the baffle plate 9 and is connected to the first chamber. A second filtering mechanism 8 is provided in the second chamber and is provided with biological filtering stones therein.

The working principle of this invention is as below: Waste water enters into the filter housing via the water inlet. Since the water inlet is tangentially disposed on the filter housing, waste water flows into the filter housing in the form of eddy flow, and solid particulate waste of a large diameter clusters are deposited at the waste outlet. The waste outlet further comprises a valve. Particulate waste of a large diameter at the waste outlet is discharged regularly. Waste water entering the filter housing flows into the biological filler in the first filtering mechanism. Organic solutes of small particles, after biological decomposition, nitrification and reverse nitrification processes by an inner biological membrane of the biological fillers, are transformed into nitrate which is then partially transformed into nitrogen and discharged into the air. After passing the first filtering mechanism, waste water flows into the second filtering mechanism under the baffle plate via the water discharging pipe. The second filtering mechanism is provided with biological filtering stones. Using the biological filtering stones for second filtering, organic solutes of small particles, after biological decomposition, nitrification and reverse nitrification processes by an inner biological membrane of the biological filtering stones, are transformed into nitrate which is then partially transformed into nitrogen and discharged into the air. Finally, purified water is discharged via the water outlet into the pond for reuse.

The invention can be further described by the following exemplary embodiments:

A microorganism filter comprising a filter housing with a hollow chamber and in which a baffle plate is arranged to divide the hollow chamber into a first chamber and a second chamber, the microorganism filter being characterized by further comprising:

a first filtering mechanism located in the first chamber and in which multiple biological fillers are disposed;

a drain pipe, at least a portion of which is located in the second chamber, with one end of the drain pipe extending out of the housing and the other end thereof passing through the baffle plate to communicate with the first chamber;

a water discharging pipe, at least a portion of which is located in the second chamber, with one end of the water discharging pipe extending out of the housing;

a water outlet pipe, with one end thereof in communication with the first filtering mechanism, and the other end thereof passing through the baffle plate to communicate with the second chamber; a second filtering mechanism located in the second chamber and in which biological filtering stones are disposed.

The microorganism filter further comprises a water inlet disposed externally relative to the first chamber of the filter housing and tangentially connected to the filter housing.

The microorganism filter further comprises a top cover configured to form a closed structure together with the first chamber.

The filter housing is provided with a plurality of buckles for fixing the top cover.

The top cover is provided with a top cover handle.

The above embodiments are preferred ones of the invention and are not intended to restrict this invention. It should be noted that various improvements and modifications can be made by those skilled in the art without departing from the principle of this invention, and shall also fall into the protection scope of this invention.