KR101514439B1 - Water filtering tank with package type bio-filter device for the improvement of filter material utility - Google Patents

Abstract

The present invention relates to a water filtering tank that filters breeding water which is discharged from breeding tanks in a breeding farm, and more specifically to a water filtering tank that has package-type biofilters for improving filtering capability and for economic recycling of useful substances which are collected during the filtering process. In the water filtering tank according to the present invention, filtering material is inserted for cultivation of microorganisms inside a pipe-shaped filter casing that has a detachable cover installed at its upper part; multiple bio-filters are installed, and each of them has an inlet channel of breeding water and a drain channel for filtered water at the floor surface and the main-body side of the filter casing, to the floor plate of the filtering tank; under the floor plate, a funnel-shaped precipitation pot, which is connected to the breeding-water supply pipe, is installed. Through the process in which the breeding water undergoes the precipitation pot and flows into the bio-filters, physical filtering and microorganism filtering of the breeding water can be carried out concurrently. Washing or replacing of the filter material can be carried out very rapidly and easily, because bio-filters can be removed from the water filtering tank easily. When needed, the filter material can be applied to breeding water tanks of other aqua-creatures for utilizing various organic matters and cultured microorganisms which adhere to the filter material; and, in the process thereof, cleaning can be done for reinstallation of filter material. In recycling the organic matters adhered to the filter material for producing fertilizers or the like, the present invention facilitates desalination of the filter material by soaking it into fresh water.

Description

Technical Field [0001] The present invention relates to a filtration tank equipped with a packaged biofilter for improving the recyclability of a filter medium,

The present invention is characterized in that a filter medium for culturing microorganisms is inserted into a pipe-shaped filter casing provided with a removable lid on the upper side, and an inlet passage for the feed water and a discharge passage for the treated water passed through the filter medium are provided on the bottom surface and the body side of the filter casing A plurality of biofilters respectively formed are attached to the bottom plate of the filtration water tank and a funnel-type settling port is connected to the bottom of the bottom plate to connect the breeding water supply pipe to allow the feed water passing through the settling port to flow into each biofilter It is possible to carry out the physical filtration and the microbial filtration of the breeding water at the same time, to easily mount and separate the filter, and to perform the quick and easy cleaning and replacement work of the filter medium, In a filtration tank equipped with a packaged biofilter for recycling Will.

Generally, in the aquaculture farms, a relatively large amount of fish is cultivated at a high density based on a limited space and water quantity. As a result, not only a variety of solids such as feed residue and fish excrement, Protein as an organic matter, fat component and ash are accumulated in the breeding water very quickly and the breeding water is contaminated.

Therefore, it is necessary to maintain the water quality of the breeding water at a certain level through the filtration treatment of the breeding water, and to prevent the water pollution in the adjacent rivers and the coastal waters due to the breeding water discharged from the aquaculture farm. And a biological filtration system for removing ammonia and nitrogen components contained in the breeding water by a microorganism is installed in the aquaculture farm.

As described above, the conventional water treatment system used in the aquaculture field is a system in which a filter medium (nonwoven fabric, sponge or sand) or a pellet filter (particulate filter) for filtering the breeding water is stacked on the bottom side of the aquarium It is common to install the filtration media on the outside of the aquaculture tank in a state in which the filtration media are put in separate filter casings and the filtration media in which the microbes have been cultivated is also dispersed in the water of the biofilter It is a common practice to inject them.

Therefore, if the filtration material is used for a certain period of time to perform filtration treatment of the farm water (drainage water), and then the filtration material is cleaned for reuse or the filter material is replaced with a new one, There is a problem that separation and treatment of a very difficult filter medium are accompanied not only in an uneconomical condition for discharging the water for breeding unnecessarily but also in that the useful microorganism components contained in the filter medium are removed to lower the filtration efficiency.

In particular, the conventional water treatment system used in the aquaculture farm is to perform only the physical filtration treatment of the solid material contained in the breeding water and the biological filtration treatment of the breeding water. In this filtration tank, the sludge together with water, Has not been effective in terms of recycling components collected in the form of other uses.

In other words, assuming that 30-40% of the 100,000 ton / year compounded feed used in the aquaculture farm in Korea is contained in the form of a solid in the farm drainage, the amount of sludge Although the total amount reaches about 40 ~ 40 thousand tons per year, the feed residue and the fish excrement contained in the effluent are collected and disposed of in the solid filtration tank, while the ammonia and other nitrogen compounds generated in the fish metabolic process are mixed with fine solids It is collected and discarded in biofilter after treatment such as sedimentation method or foam float separation.

However, the above-mentioned solids such as feed residue and various organic substances in the breeding water are useful sources of microorganisms and bacteria necessary for the biological filtration treatment of the breeding water, and other species such as shrimp, sea cucumbers or lobsters other than fish (Heterogeneous) species can be fully utilized as a feed for aquatic organisms. Desalination treatment of sludge-type collection can be recycled as a good organic fertilizer, but the collection components in the farm drainage water reaching 3-40,000 tons per year can not be recycled Most of them are discharged to rivers or the sea, which causes secondary environmental pollution.

The most fundamental cause of the above-mentioned situation is that the useful components contained in the breeding water are effectively collected in the filtration process of the breeding water, and there is no way to easily recycle the same. Also, the seawater sludge collected from the filtration tank In case of recycling as fertilizer, it is necessary to carry out a severe desalination treatment of seawater sludge with high salt content, which is an uneconomical factor that the cost burden due to the desalination treatment of seawater sludge becomes greater than the advantage of recycling of seawater sludge The practical recycling of seawater sludge is also very difficult.

Korean Patent No. 10-0828629 (Date of Publication: May 09, 2008) Korean Patent Publication No. 10-2008-0100890 (Published Date: November 21, 2008)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a filter casing for inserting microorganisms into a filter casing having a removable cover at the upper end thereof, A plurality of biofilters each formed with a water inlet passage and a discharge passage of treated water through a filter medium are mounted on a bottom plate of a filtration water tank and a funnel type settling port is connected to a bottom of the bottom plate, Through the process of introducing the breeding water through the settling port into each biological filter, physical filtration and microbial filtration of the breeding water can be performed at the same time, and each biological filter can be easily separated from the filtration tank, It can also be carried out very quickly and easily, It is possible to utilize various organic matter and cultured microorganisms attached to the filter medium by feeding the tarmac into the aquarium of other aquatic organisms. In this process, cleaning is performed to re-install the filter medium, and the organic matter attached to the filter medium is treated as fertilizer It is possible to perform the desalination treatment more easily by immersing the filter material in the fresh water even when the filter material is recycled, and a package type biofilter for improving the filtration performance and economically recycling the useful components collected in the filtration process And to provide a filtration water tank which has a high water content.

According to the present invention, there is provided a filtration tank for filtration of breeding water used in a farm, wherein the filtration tank has a rectangular tube shape having a bottom plate, and at the bottom of the bottom plate of the filtration tank, Wherein a plurality of biofilters are vertically installed at a predetermined interval in a bottom plate of the filtering water tank, and each of the biofilters is connected to a pipe having a bottom surface And a pellet filter packed as a filter medium for culturing microorganisms in an inner space of the filter casing, wherein the pellet filter is disposed at the bottom of the filter casing, On the side of the filter casing, an inflow hole is formed, A bottom hole for communicating each of the biofilters with the lower side sedimentation port is formed in the bottom plate of the filtration water tank, and a bottom hole is formed in the bottom plate of the biofilter A filter-like filter mounting base on which a lower end of the filter casing is detachably assembled is fixedly mounted on a bottom plate, the one side wall of the filtration water tank being a perforated plate partition for discharging the treated water through the respective biofilter to the adjacent discharge water storage tank, And a drain pipe having a valve mechanism is connected to the lower end of the sedimentation port. The pellet filter may be one selected from an aggregate (a small-sized rock having an irregular shape), a shell, or a porous plastic particle, Characterized in that the pellet filter has a maximum diameter of 5 to 20 mm Above the particle filter that I features are used.

In addition, as another embodiment of the biofilter mounted on the bottom plate of the filtering water tank, a center pipe is installed in a vertical direction along an inner center portion of the filter casing, and a filter medium for culturing microorganisms in a space between the center pipe and the filter casing Wherein a filtration sheet is inserted and an outlet hole of the breeding water through the filtration sheet and an outlet hole of the treated water passing through the filtration sheet are formed on the entire surface of the body of the filter casing and the center pipe, An assembly part in which the upper end of the center pipe is assembled is protruded and formed in the bottom surface of the filter casing, and an assembly hole through which the lower end of the center pipe, which provides an inflow port for breeding water, A fiber material having a width corresponding to the height of the casing and a predetermined length Wherein the mesh sheet is installed around the center pipe, and the mesh size of the mesh network constituting the filter sheet is in the range of 2 to 5 mm.

According to the present invention as described above, several to several tens of pipe-type biofilters can be easily attached and detached on the bottom plate of the filtering water tank, and the filter cover can be removed to easily remove or insert the filter media. It is possible to perform the cleaning or replacement work of the filter medium very quickly and easily under the condition to prevent unnecessary discharge of the water stored in the filtered water tank.

In addition to the physical filtration treatment of the cultivated water through the filter medium, biological filtration of the cultivated water by the microorganisms cultivated in the filter medium after the lapse of a certain period is also made possible, If necessary, microorganisms are preliminarily cultivated in the filter material, so that the physical filtration treatment and the biological filtration treatment of the breeding water are performed simultaneously with the installation of the filter, thereby providing a further superior filtration performance.

Particularly, a pellet filter or a filtration sheet as a filter medium used for filtration of breeding water is taken out from a filter casing and directly introduced into a culture tank for aquatic organisms such as shrimp, sea cucumber or lobster, And the effect of using organic and cultured microorganisms as food for other aquatic organisms.

This has the effect of greatly reducing the cost of food for shrimp, sea cucumber or lobsters, and the pellet filter or the filter sheet is naturally cleaned during the feeding process of the aquatic organisms. Therefore, It is possible to use the filter medium that has been used for feeding purposes without removing the filter medium from the tank and then put it back into the filter casing.

On the other hand, even in the case of trying to recycle the fine solid matter and the organic matter component, which are attached to the filter sheet in the form of a net, in a high quality organic fertilizer, if the filtration sheet is immersed in the water tank in which the fresh water is stored, It is possible to easily and easily carry out the desalination treatment required for the filtration sheet. Therefore, it is possible to fertilize the fine solid matter and organic matter components collected by the filtration sheet at a very low cost.

Ultimately, it will prevent the economic loss and secondary environmental pollution caused by the release and disposal of the solids contained in the effluent from the farms with an annual capacity of more than 30,000 to 40,000 tons together with the effluent, and present a new paradigm for disposal of the farm drainage water. And can provide a very useful effect.

1 is an exploded perspective view showing an embodiment of a packaged biofilter used in the present invention.
Figure 2 is a side cross-sectional view of the combined state of Figure 1;
3 is an exploded perspective view showing another embodiment of a packaged biofilter used in the present invention.
Figure 4 is a side cross-sectional view of the combined state of Figure 3;
5 and 6 are a top view and side cross-sectional view of a water treatment system incorporating the filtering water tank of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, an embodiment of a packaged biofilter according to the present invention comprises a pipe-shaped filter casing 2 having a bottom surface 2a, And a pellet filter 4 inserted and filled in the inner space of the filter casing 2 as a filter material for culturing microorganisms. The pellet filter 4 is attached to the inner surface of the filter casing 2, And the filter lid 3 is mounted on the upper surface of the filter casing 2 in a detachable manner or by a screw fastening method.

In addition, an inflow hole 5 is formed through the bottom surface 2a of the filter casing 2 and an outlet hole 6 for the treated water is formed on the upper side of the filter casing 2 So that the feed water flowing through the bottom surface 2a of the filter casing 2 is discharged to the upper portion of the filter casing 2 after passing through the entire filtration path by the pellet filter 4. [

It is preferable that the inflow hole 5 is formed to have a diameter enough not to allow the pellet filter 4 to escape to the bottom and to be formed in a plurality of holes at a predetermined interval on the bottom surface 2a of the filter casing 2, The hole 6 is also made to have a diameter such that the pellet filter 4 does not escape to the outside and the upper end of the filter casing 2 It is preferable to uniformly distribute the liquid droplets over the entire surface of the upper side corresponding to about 5 to 10 cm below the liquid droplet.

The pellet filter 4 may be selected from among aggregates such as gravel and shells or shells of shells or porous plastic particles. The pellets may be used by mixing two or more of the above materials, Any kind of porous solid particles can be used as long as they are capable of achieving attachment of fine solids and organic components contained in water and cultivation of microorganisms.

It is preferable that the particle size of the pellet filter 4 is such that the maximum diameter thereof is in the range of 5 to 20 mm. When the pellet filter 4 having a particle size of less than 5 mm is used, The pellet filter 4 is required to have a slightly higher hydraulic pressure or pumping power required to pass through the pores between the particles of the pellet filter 4, It is not preferable in terms of the formation of a smooth water flow and the overall utilization of the pellet filter 4, and the cleaning cycle and the replacement cycle of the pellet filter 4 are also unnecessarily reduced.

On the contrary, when the pellet filter 4 having a particle size exceeding 20 mm is used, the pores between the particles of the pellet filter 4 are enlarged, so that smooth water flow and the overall utilization of the pellet filter 4, It is somewhat advantageous in terms of prolonging the washing cycle or the replacement cycle of the pellet 4, but it is somewhat disadvantageous in terms of ensuring sufficient filtering performance of the breeding water. Therefore, taking all of these points into consideration, The filter 4 is used.

Another embodiment of the packaged biofilter according to the present invention comprises a tubular filter casing 2 having a bottom surface 2a as shown in Figures 3 and 4 respectively, A center pipe 7 installed in a vertical direction along an inner center portion of the filter casing 2 and a center pipe 7 installed at the center of the filter casing 2 and the center pipe 7, And a filtering sheet (8) inserted and installed as a filter medium for culturing microorganisms in a space between them.

In addition, an outlet hole 6a for feeding the breeding water through the filter sheet 8 is formed in the body of the center pipe 7, and a filter sheet 8 is attached to the body of the filter casing 2 An upper end portion of the center pipe 7 is assembled with an assembly portion 3a protruding from an inner center of the filter lid 3 while a center pipe 7 are installed so as to penetrate through an assembly hole 2b formed in the bottom surface 2a of the filter casing 2. [

Therefore, the lower end inlet 7b of the center pipe 7 provides the initial inflow passage for the breeding water through the biofilter 1, and the filter lid 3, as in the previous embodiment, And the assembly of the filter cover 3 and the center pipe 7 is likewise mounted on the upper surface of the casing 2 in a manner of fitting or screwing in a manner of screw fitting. Method can be applied.

Each of the outflow holes 6 and 6a formed in the center pipe 7 and the filter casing 2 has a uniform distribution of the breeding water through the entire area of the filter sheet 8, It is most preferable that the center pipe 7 and the filter casing 2 are evenly distributed over the entire body surface at a constant interval for smooth and stable discharge of the treated water.

The bottom portion of the filter casing 2 and the center pipe 7 are connected to the bottom of the filter casing 1 and the center pipe 7 at a height required for mounting the biofilter 1 and assembling the center pipe 7, 6 (a) and 6 (b) are not formed. According to this method, the structural strength of the mounting portion of the biofilter 1 and the assembly portion of the center pipe 7 can be secured, 6a can be reduced by reducing the number of drilling operations required to form the filter casing 2 and the center pipe 7, thereby contributing to a reduction in the production cost of the biofilter 1 including the filter casing 2 and the center pipe 7.

The filter sheet 8 may be a very various sheet-like material including a sponge, a non-woven fabric or various fabric materials, which have been applied to existing filter media, as long as they can achieve adhesion of micro- It is more preferable to use a net-like sheet material for effective filtration and recovery of fine solids and organic components through the filter sheet 8 and quick and efficient recycling of the components.

In other words, since the filtration sheet 8 of the sponge, the nonwoven fabric or various fabric materials has a large filtration resistance for passing the breeding water, a relatively high water pressure and a strong pumping force are required, Since the solids component is intensively adhered only to the inner side surface, the washing period or replacement period of the filter sheet 8 is unnecessarily shortened. Even when the component attached to the filter sheet 8 is to be used as a food for other aquatic creatures, There is a disadvantage that the filtration sheet 8 must be filled in consideration of the surface position.

However, the use of the net-like sheet material makes it possible to easily attach and accumulate various components including the solids in the netting structure of the filter sheet 8 while reducing the filtration resistance for passing the breeding water, Such disadvantages can be solved at once.

Particularly, if a mesh sheet of a fibrous material having a width corresponding to the height of the filter casing 2 and a predetermined length is installed around the center pipe 7 as shown in FIG. 3, The filter sheet can be easily mounted and separated by using only the filter sheet 8, and the filter material can be effectively recycled, which is the most preferable embodiment applicable to the present invention.

Although it is advantageous to use synthetic fibers excellent in anti-corrosiveness against seawater, for example, nylon fiber, polyester fiber or acrylic fiber, etc., in the net yarn used in the production of the mesh sheet, natural fibers may be used if necessary , It is desirable to use a mesh yarn in which a plurality of strands of thin fiber yarns are twisted and yarn is joined so that the adhesion performance of micro-solids and organic matters and the culture performance of microorganisms can be more assuredly assured And it is optimal if it is a fiber product which can provide a myriad of bristles on the surface of the net thread.

In addition, it is more preferable that the mesh size of the net making up the filter sheet 8 is in the range of 2 to 5 mm, and the limited range of the mesh size is, in one embodiment, 4) is limited to the particle size of the particles.

The engaging step 3b formed on the inner circumferential surface of the filter lid 3 can appropriately adjust the length of the lower end of the center pipe 7 protruding through the assembling hole 2b of the filter casing 2 And the punch filter 4 may be inserted in place of the filter sheet 8, as in the previous embodiment, and used.

The typical design dimensions of the main components constituting the packaged biofilter 1 applied to the present invention are shown in Table 1 below, but the packaged biofilter 1 applied to the present invention is not limited to the dimension range And it is needless to say that the present invention can be applied to a larger size or a smaller size in accordance with the treatment of the breeding water.

Part Name Dimensional condition Filter casing (2) Diameter: 70 mm, height: 500 mm, thickness: 1 to 2 mm Filter cover (3) Inner diameter: 70 mm, height: 50 mm, thickness: 1 to 2 mm Center pipes (7) Diameter: 16 mm, Height: 520 mm, Thickness: 1 to 2 mm The inflow hole 5, the outflow holes 6 and 6a, Diameter: 3 ~ 5mm Filters for pellets (4) Maximum particle diameter: 5 to 20 mm Filtering sheets (mesh) (8) Width: 500 mm, length: 1000 mm, mesh size: 2 to 5 mm

The material of the filter casing 2, the filter cover 3 and the center pipe 7 constituting the packaged biofilter 1 may be a PVC material excellent in corrosion resistance and workability against seawater, It is possible to apply various kinds of synthetic resins or plastic materials.

5 and 6 show a typical example of applying the filtration water tank 11 of the present invention equipped with the package type biofilter 1 to the water treatment system 10 for aquaculture, A breeding water supply pipe 9 for supplying the breeding water through the reverse water pressure or the pumping method is connected to the funnel shaped sedimentation port 18 disposed below the bottom plate 11a of the filtration water tank 11.

The package type biofilm 1 is mounted on the bottom plate 11a of the filtration water tank 11 in a vertical direction at a predetermined interval from several to several dozen (Not shown) for communicating each of the biological filters 1 with the lower side precipitation port 18 is formed on the bottom plate 11a of the bottom plate 11a.

On the upper side of each of the bottom holes, a pipe-shaped filter mounting base 11c on which the lower end of the filter casing 2 of the biological filter 1 is detachably assembled is fixed on the bottom plate 11a, A bottom reinforcing bar 11b in the form of a reinforcing bar is provided so as to more stably support the entire load of the filter 1 and a drain pipe 19 having a valve mechanism V is provided at the lower end of the settling port 18 Connection is established.

The breeding water supply pipe 9 is connected to the side of the edge of the sedimentation port 18 of the filtration water tank 11 so that the inflow water fed through the breeding water supply pipe 9 can be swirled inside the precipitation port 18, So that the sedimentation of the solid contained in the raising water is carried out in the sedimentation port 18 of the filtration water tank 11 before the filtration treatment by the respective biological filters 1, It is also possible to provide a separate solids settling apparatus at the previous position of the breeding water supply pipe 9.

In addition, the discharge water storage tank 13 is disposed on the rear side (left side in the figure) of the filtration water tank 11 provided with the package type biofilter 1 according to the present invention with a perforated plate partition 12 interposed therebetween, The final treatment water is introduced into the discharge water storage tank 13 through the water dispersion hole 12a of the perforated plate partition 12 and the discharge water storage tank 13 is provided with a valve mechanism And a process water discharge pipe 15 having a drain pump V and a drain pump 16 are connected.

The drain pump 16 is connected to the process water discharge pipe 15 in the manner of a flange joint 16a at a position past the valve mechanism V and is connected to the sensor bracket 13a at the upper corner side of the discharge water storage tank 13 A level sensor 17 for controlling the drainage pump 16 is provided and the drainage pump 16 is installed on a separate pump pedestal 16b so as not to be placed on the floor of a plant having a lot of water, And is connected to the level level sensor 17 via a control cable or control panel as shown.

In addition, a sedimentation induction pipe 14 is vertically installed at the center of the discharge water reservoir 13, and the treated water discharge pipe 15 passes through the wall of the discharge water reservoir 13, And the inlet side of the treated water discharge pipe 15 extends in the upward direction by a predetermined length and is arranged in the form of a double pipe with the precipitation induction pipe 14. [

When the sedimentation induction pipe 14 is applied to the treated water discharge pipe 15 as described above, it is possible to induce additional sedimentation of the solid matter by the ascending and descending water flow in the discharge water storage tank 13, A funnel-type settling port 18 for collecting and discharging the settled solids is provided in the bottom of the settling port 18 and a drain line 19 having a valve mechanism V is connected to the bottom of the settling port 18 Respectively.

In addition, in the drawing, the inner space of the discharge water storage tank 13 is partitioned into two water storage spaces, one in each of the left and right sides by the center side perforated plate partition 12, and the valve mechanism V and the drain pump In the case of the sedimentation port 18 and the level sensor 17 for the discharge water storage tank 13 including the process water discharge pipe 15 provided with the water discharge pipe 16 and the sediment induction pipe 14 connected thereto, Are individually applied.

Since the two drain pumps 16 are connected in parallel in a state in which the respective water storage spaces constituting the discharge water storage tank 13 communicate with each other with the central perforated plate partition 12 interposed therebetween as described above, Even if the pump 16 fails or malfunctions, it is possible to discharge the treated water to the remaining drain pump 16, and in addition to the water treatment system 10 shown in FIGS. 5 and 6, It goes without saying that the filtration water tank 11 equipped with the packaged biofilter 1 of the present invention may also be applied.

As described above, each of the biological filters 1 mounted on the filtration water tank 11 of the present invention has an inlet hole 5 provided at the bottom surface 2a of the filter casing 2 or an inlet port 7b are communicated with the lower side precipitation port 18 via the bottom plate 11a of the filtration water tank 11 so that the number of the breeding water flowing into the precipitation port 18 can be increased by the precipitation process of the solids And then flows into each of the biological filters 1.

The breeding water flowing into each of the biofilm 1 is raised along the inner space of the filter casing 2 while the filter media inside the filter casing 2, that is, the pellet filter 4 or the filter sheet 8 The filtration of the water by the pellet filter 4 or the filtration sheet 8 and the filtration by microorganisms are carried out in this process.

Particularly, when the control method of the drain pump 16 by the water level sensor 17 is applied, as shown in FIG. 6, the periodical regulation of the water level fluctuation of the filtration water tank 11 from the pump operation water level to the pump stop water level The pellet filter 4 or the filtration sheet 8 in each of the biofilm 1 mounted on the filtration water tank 11 can be appropriately controlled to be exposed to the air, (CO ₂ ) removal and oxygen supply through the exhaust gas.

The final treated water having passed through the respective biofilm 1 is stored in the discharge water storage tank 13 through the perforated plate partition 12 as described above and then the operation of the drain pump 16 by the water level sensor 17 Water is discharged to the outside of the farm through the treatment water discharge pipe 15 or is supplied to a final filtration device provided in the farm, for example, an aeration type microbial filter.

As described above, the filtration water tank 11 equipped with the packaged biofilter 1 according to the present invention has a structure in which the filter medium is installed on the bottom plate 11a in a stacked manner or the filtration water tank 11 is provided with a separate filtration device The biofilter 1 itself can be detached and installed in the filtration water tank 11 in a package form so that the biofilter 1 can be applied to the aquaculture water treatment system 10 Can be further improved.

In other words, the lower end of the pipe-shaped filter casing 2 can be easily attached and detached on the bottom plate 11a of the filtration water tank 11, and the filter lid 3 can be easily separated and removed, It is possible to carry out the washing or replacement work of the filter medium very quickly and easily under the condition to prevent unnecessary discharge of the breeding water stored in the filtration water tank 11.

In addition to the physical filtration treatment of the breeding water through the filter medium, the biological filtration of the breeding water by the microorganisms cultivated in the filter medium after a lapse of a certain period of time allows the filtration performance of the breeding water to be greatly improved, If necessary, the microorganisms are preliminarily cultivated in the filter medium, so that the physical filtration treatment and the biological filtration treatment of the cultivated water are performed simultaneously with the installation of the biological filter 1, thereby further improving the filtration performance.

In other words, the micro-solids and organic components adhering to and accumulating in the pellet filter (4) or the filter sheet (8) during the physical filtration process of the breeding water can be used as microorganisms or bacteria useful for the biological filtration treatment of the stock water, Nitrosomonas and Nitrobacter can be cultivated so that when a certain period of time elapses after the operation of the water treatment system 10, microorganisms or bacteria useful for the filter medium of each biological filter 1 Can be cultured in large quantities at a high concentration, so that not only physical filtration but also biological filtration can be performed.

Before the pellet filter 4 or the filtration sheet 8 is put into the filter casing 2 so that the filtration treatment of the cultivated water by microorganisms can be performed simultaneously with the operation of the water treatment system 10, It is possible to preliminarily inoculate and cultivate the microorganisms in the biological filter 1. In this way, it is possible to simultaneously perform physical filtration and microbial filtration of solids in each of the biological filters 1 to provide better filtration performance, It is possible to very easily and effectively recycle the fine solids and organic components attached to the filter sheet 4 or the filter sheet 8.

As a representative example of the recycling method, when a fine solid matter and an organic matter component are adhered to the filter medium of each biofilm 1 in a large amount in the process of performing filtration of the feed water using the water treatment system 10, The filter medium is taken out of the filter casing 2 and put into the aquarium of other aquatic creatures such as shrimp, sea cucumber or lobster. The new filter medium is put back into the filter casing 2 from which the filter medium has been removed, Different species) The filter material cleaned by aquatic organisms can be reused and used.

 That is, the micro-solids, organic matter and cultured microorganisms adhered to the pellet filter 4 or the filtration sheet 8 become high-quality food for aquatic organisms such as shrimp, sea cucumber or lobster so that the pellet filter 4 or the filtration sheet The pellet filter 4 or the filter sheet 8 collects shrimp or sea cucumbers or lobster to the pellet filter 4 or the filtration sheet 8 when the pellet filter 4 or the filter sheet 8 is directly introduced into the aquarium of aquatic organisms. It is to feed the attached micro-solids, organic matter and cultured microorganisms as food.

Therefore, it is possible to greatly reduce the cost of feeding the shrimp, sea cucumber, lobster, etc., and to clean the pellet filter (4) or the filter sheet (8) The pellet filter 4 or the filtration sheet 8 which has been used for feeding can be taken out of the water tank without having to separately perform the cleaning operation of the pellet filter 4 or the filtration sheet 8, It can be immediately re-attached to the filter casing 2 of the filter 1 and used again.

On the other hand, even when the fine solid matter and the organic matter attached in bulk to the net-like filter sheet 8 are to be recycled as high-quality organic fertilizer, if the filter sheet 8 is immersed in the water tank in which the fresh water is stored The desalination treatment required for the fertilizing operation of the seawater sludge can also be carried out easily and easily. Therefore, the fine solids and the organic matter collected by the filter sheet 8 can be fertilized at a very low cost.

Ultimately, it is possible to prevent the economic loss and secondary environmental pollution caused by discharging or disposing of the farmed sediments with a discharge volume of 3 to 40 thousand tons per year, and to present a new paradigm for the disposal of farm drainage It is possible to provide a filtration means in an environmentally friendly and economical manner.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention by those skilled in the art without departing from the scope of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made based on the illustrated structure.

1: biological filter 2: filter casing 2a: bottom surface
2b: Assembly hole 3: Filter cover 3a: Assembly part
3b: jaw 4: pellet filter 5: inflow hole
6a: outflow hole 7: center pipe 7a: fastening portion
7b: inlet port 8: filtration sheet 9: breeding water supply pipe
10: water treatment system 11: filtration water tank 11a: bottom plate
11b: bottom reinforcement member 11c: strainer mounting base 12: perforated partition plate
12a: water dispersion ball 13: discharge water storage tank 13a: sensor bracket
14: precipitation induction pipe 14a: lower end opening 15: treated water discharge pipe
16: drain pump 16a: flange joint 16b: pump base
17: Level level sensor 18: Settling port 19: Drain piping
V: valve mechanism

Claims (6)

In the filtration tank for filtration of the breeding water used in the farm,
The filtration water tank 11 has a rectangular tubular shape having a bottom plate 11a and a funnel type precipitation port 18 to which a breeding water supply pipe 9 is connected is provided below the bottom plate 11a of the filtration water tank 11 Several to several tens of the biofilm filters 1 are mounted in the vertical direction at regular intervals, and a plurality of the biofilters 1 are attached to the bottom plate 11a of the filtration water tank 11,
Each of the biofilm filters 1 includes a pipe-shaped filter casing 2 having a bottom surface 2a, a filter cover 3 removably installed at an opened upper end of the filter casing 2, And a pellet filter (4) filled in the inner space of the filter casing (2) as a filter material for culturing microorganisms. The bottom surface (2a) of the filter casing (2) A hole 5 is formed in the upper part of the filter casing 2 and an outlet hole 6 of treated water is formed in the upper part of the filter casing 2 through the pellet filter 4,
The bottom plate 11a of the filtration water tank 11 is provided with a bottom hole for communicating each of the biofilm 1 with the lower side sedimentation port 18, Shaped filter mounting base 11c on which a lower end portion of the filter casing 2 is detachably assembled is fixed on the bottom plate 11a,
One side wall of the filtration water tank 11 is a perforated plate partition 12 for discharging the treated water having passed through the respective biofilm 1 to the adjacent discharge water storage tank 13, And a drain pipe (19) provided with a valve mechanism (V) is connected to the drain pipe (19). The filtration water tank is equipped with a packaged biofilter that improves the recyclability of the filter medium. 2. The filtration tank (1) according to claim 1, wherein the pellet filter (4) is one selected from the group consisting of aggregate, shell, and porous plastic particles, . The pellet filter according to claim 1 or 2, wherein the pellet filter (4) is a particulate filter having a maximum diameter in the range of 5 to 20 mm. The filtration with the packaged biofilter water tank. In the filtration tank for filtration of the breeding water used in the farm,
The filtration water tank 11 has a rectangular tubular shape having a bottom plate 11a and a funnel type precipitation port 18 to which a breeding water supply pipe 9 is connected is provided below the bottom plate 11a of the filtration water tank 11 Several to several tens of the biofilm filters 1 are mounted in the vertical direction at regular intervals, and a plurality of the biofilters 1 are attached to the bottom plate 11a of the filtration water tank 11,
Each of the biofilm filters 1 includes a pipe-shaped filter casing 2 having a bottom surface 2a, a filter cover 3 removably installed at an opened upper end of the filter casing 2, A center pipe 7 installed in a vertical direction along an inner center portion of the filter casing 2 and a filter sheet 7 as a filter medium for culturing microorganisms inserted between the filter casing 2 and the center pipe 7 Wherein the filter sheet comprises a mesh sheet of a fibrous material having a width corresponding to the height of the filter casing and a predetermined length, It is installed in a rolled form,
An outlet hole 6a is formed through the filter sheet 8 over the whole body of the center pipe 7 and a filter sheet 8 is arranged over the entire body of the filter casing 2, The outflow holes 6 of the treated water are formed,
An assembling portion 3a to which the upper end of the center pipe 7 is assembled is protruded and formed at an inner center portion of the filter lid 3. An inflow port 7b is formed on the bottom surface 2a of the filter casing 2, (2b) through which the lower end of the center pipe (7)
The bottom plate 11a of the filtration water tank 11 is provided with a bottom hole for communicating each of the biofilm 1 with the lower side sedimentation port 18, Shaped filter mounting base 11c on which a lower end portion of the filter casing 2 is detachably assembled is fixed on the bottom plate 11a,
One side wall of the filtration water tank 11 is a perforated plate partition 12 for discharging the treated water having passed through the respective biofilm 1 to the adjacent discharge water storage tank 13, And a drain pipe (19) provided with a valve mechanism (V) is connected to the drain pipe (19). The filtration water tank is equipped with a packaged biofilter that improves the recyclability of the filter medium. delete The filtration water tank according to claim 4, wherein the mesh size of the mesh network constituting the filter sheet (8) ranges from 2 to 5 mm.

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