TW201424580A - Processing equipment for high density circulating water culture - Google Patents

Abstract

The present invention provides a processing equipment for high density circulating water culture, which comprises a culture tank, an aeration unit, a circulating water processing tank adjacent to the culture tank, a membrane filtration unit and a backwater unit. The culture tank is an octagonal tank formed by surrounding with a plurality of base plate units, and has an overflow weir. The aeration unit is provided with a plurality of air supply pipes to provide sufficient dissolved oxygen to the water in the culture tank, and also float the residual baits and excrement to be pushed out of the tank body. The circulating water processing tank includes a nitrification chamber and a membrane filtration chamber, in which the nitrification chamber is communicated with the overflow weir, and filled with embedding nitrifying bacteria; and, the membrane filtration unit is configured in the membrane filtration chamber, and provided with at least a plurality of disc-shaped membrane bags and a water generating pipe. The backwater unit includes a water pump connected with the water generating pipe, and a backwater pipe connected with the water pump and extended to the culture tank.

Description

High-density culture circulating water treatment equipment

The invention relates to a processing equipment for aquaculture water, and particularly relates to a high-density culture which can provide good water quality, increase the density and survival rate of biological breeding, and has a small cultivation tank and can be timely disassembled for cleaning and expansion. Circulating water treatment equipment.

With the gradual depletion of offshore fishery resources and the development of offshore fisheries, China's fisheries have gradually turned into aquaculture development in recent years. However, due to the small land area in Taiwan and the problem of subsidence caused by over-pumping groundwater, traditional fishing has been The sputum farming method has caused a great bottleneck in farming, so a closed-loop aquaculture system has emerged.

This kind of culture system usually firstly pumps the culture water into the tank with the water inlet equipment. The tank tank is equipped with aeration equipment to provide oxygen, and a sewage pipe is connected at the bottom of the tank to a circulating water purification equipment. The filtered water from the purification equipment will be recycled to the tank for recycling. Therefore, as long as the water of about 10% of the culture water is added to the tank every week, continuous water circulation can be achieved.

Although the closed recirculating aquaculture system has the advantages of saving water resources, land cost, and rapid growth of aquatic products and high recovery rate, there are still the following unfavorable factors to be overcome:

First, because high-density aquaculture needs to feed a large amount of bait to maintain the growth of fish and shellfish, the pool bottom will often accumulate a large amount of residual bait and biological excrement. If these bait and excrement cannot be removed immediately, The concentration of nitrous acid and ammonia nitrogen in the pool water is increased, which makes the water quality excellent oxidation and affects the breeding effect.

Second, in order to remove ammonia nitrogen from the culture water, the previous recirculating aquaculture system also It is necessary to cooperate with the biological filter bed to culture the nitrifying bacteria for nitrification by using the biological filter bed. Since the time of the water staying in the biological filter bed affects one of the key factors for the removal efficiency of ammonia nitrogen, the biological filter bed is bound to require certain use. The area, in addition, nitrification requires a large amount of oxygen, which means that the biological filter bed is continuously provided with a large amount of aeration, which is extremely energy-intensive.

Third, the previous culture tanks are usually fixed by cement or stainless steel. It is not possible to expand the size or move of the tanks in a timely manner according to the actual needs of the operators, which makes the development of the breeding bases very limited.

4. Based on the requirements of the aquaculture environment, the fixed type of culture tanks must be cleaned regularly. Otherwise, bacteria and algae will be easily produced, and the survival rate of the culture will be reduced. However, the general culture tanks are easy to clean because they cannot be disassembled. On the dead angle, once the cleaning work is not correct, the groove wall will easily adhere to the biological mucosa to produce a virus, increasing the incidence of fish.

5. In the past, water purification equipment must be combined with a multi-stage treatment process. The process usually uses gravity sedimentation and sand filtration to screen out large particles of solids in water, followed by biological treatment (such as aerated biological filter bed, rotation Bio-disc or fluidized bed) removes ammonia nitrogen and organic matter from the water, and then uses microporous material to filter suspended particles in the water and sludge generated after biological treatment, and then add the agent for sterilization, and then to the salt-discharging pool. Adjust the PH value, and finally send it to the culture tank for recycling after aeration and aeration. Therefore, its water purification equipment occupies a huge breeding site. In addition to making the site cost high, the overall equipment cost is extremely amazing, which is unfavorable. Long-term management of the aquaculture industry.

In addition, in addition to high energy consumption, the cost of regular replacement of filter materials is also a low cost, so the operation and maintenance costs of the entire system are also very high, requiring professional farming operators. competent.

Therefore, the invention provides a high-density culture circulating water treatment device, which provides complete aeration in the culture tank, except that the aeration amount can be separately adjusted to provide sufficient dissolved oxygen, and the residual bait and excrement can be completely floated. Out of the trough, in order to maintain excellent aquaculture water, increase the density and survival rate of biological breeding.

Another object of the high-density culture circulating water treatment device of the present invention is that the culture tank is formed into an octagonal type by a unit unit which can be assembled with each other, so that the circulation of the water flow has no dead angle, and can be disassembled for convenient cleaning and transportation, and assembly. The volume of the culture tank can be expanded quickly and in a timely manner.

In addition, another object of the treatment device for high-density culture circulating water of the present invention is to integrate the culture tank with the water circulation and the filtering device, so that the equipment can be reduced in area, and the breeding base can be configured more effectively. To reduce the cost of the venue.

Moreover, the further object of the processing equipment for high-density culture circulating water of the invention not only consumes low energy during water circulation treatment, does not need to add any chemical bactericide, and the filter membrane of the filtering device can be automatically cleaned periodically, thereby reducing equipment operation and maintenance. Cost and more environmentally friendly.

Therefore, the apparatus for treating high-density circulating water according to the present invention comprises at least one culture tank, an aeration unit, at least one circulating water treatment tank, at least one membrane filtration unit and a driving unit. The culture tank is a detachable group tank for accommodating aquaculture water, and is an octagonal hollow tank body which is formed by a plurality of substrate units adjacent to each other, and the culture tank has an overflow weir. The aeration unit has a plurality of air supply pipes installed at the bottom of the culture tank to drive outside air into the water body for aeration and maintain the dissolved oxygen amount, and at the same time, a large amount of fine bubbles can be generated, and the inside of the culture tank can be The residual feed and excrement are lifted and pushed up, and then overflowed from the overflow weir to the outside of the culture tank. The circulating water treatment tank is detachable a tank body connected to the side of the culture tank corresponding to the overflow weir, the circulating water treatment tank has a nitrification reaction chamber at the bottom and a membrane filtration chamber located above the nitrification reaction chamber, the nitrification reaction The chamber is filled with an embedded nitrifying bacteria and includes a cross-flow tube extending to the weir, the cross-flow tube just guiding the water flowing out of the culture tank into the nitrification reaction chamber, and using the nitrifying bacteria therein Simultaneous nitrification/denitrification to remove ammonia nitrogen and nitric acid and nitrite from water. The membrane filtration unit is a round flat membrane and is set in the membrane filtration chamber, and has at least one water production pipe and a plurality of disc-shaped film bags which are watertightly disposed on the water production pipe, and the center of each film bag is formed. There is a filtrate birth canal that is connected to the production water pipe. The return water unit is disposed outside the culture tank, and has a water pump connected to one end of the water production pipe, and a water return pipe connected to a water outlet end of the water pump, the water return pipe is extended to the culture tank, and is pumped Driven by the suction pressure of the pump, the water in the membrane filtration chamber can be separated from the liquid pressure by vacuum pressure difference, thereby removing viruses, bacteria, sodium hypochlorite and insoluble solids in the water, and the filtrate can pass through the water production pipe. The return pipe is pumped back into the culture tank to form circulating water for use.

According to the above-mentioned high-density culture circulating water treatment device, wherein the substrate unit can be expanded and expanded by using an equal proportion of plate splicing, and the aeration unit has a plurality of air regulating valves respectively connected to the gas supply pipes, each of which A plurality of branch pipes are respectively extended in a horizontally staggered manner, and each of the branch pipes is provided with a plurality of aeration holes.

According to the above-mentioned high-density culture circulating water treatment device, an antibacterial material layer is respectively disposed on the inner side surface of the plate body to prevent the biological mucus from accumulating on the inner wall of the plate body.

According to the above-mentioned high-density culture circulating water treatment device, the antibacterial material layer is a stainless steel mesh made of silver, copper, cobalt, titanium dioxide, and can be taken out and washed from the plate.

According to the above-mentioned high-density culture circulating water treatment device, further comprising a sterilization unit, the sterilization unit can supply a trace amount of ozone into the water body of the culture tank.

According to the above-mentioned high-density culture circulating water treatment device, wherein the sterilization unit has at least one ultraviolet light source, an inhalation valve connected to the ultraviolet light source, and at least one installed at the bottom of the culture tank and the inhalation valve The connected ozone supply pipe is installed on a side of the overflow weir away from the culture tank, so that the ozone can automatically diffuse with the flow of the water.

According to the above-mentioned high-density culture circulating water treatment device, the circulating water treatment tank further has a barrier layer for separating the nitrification reaction chamber and the membrane filtration chamber, the barrier layer being punched with holes Net to prevent the embedded nitrifying bacteria from floating directly into the membrane filtration chamber.

The processing device for high-density circulating water according to the above, further comprising a spray unit, the spray unit being disposed above the membrane filter unit and having a backwash tube bypassing the return pipe to The circulating water is directly taken to spray the membrane bag of the membrane filtration unit.

According to the above-mentioned high-density culture circulating water treatment device, the embedded nitrifying bacteria filled in the nitrification reaction chamber are mixed with activated carbon by the dominant nitrifying bacteria, and then the water-insoluble polymer is added after curing. The resulting porous immobilized particles.

According to the above-mentioned high-density culture circulating water treatment device, the bottom of the circulating water treatment tank is provided with a row of slag holes.

Referring to Figures 1 and 5, a first embodiment of the high-density culture circulating water treatment apparatus of the present invention comprises at least one culture tank 100 and an aeration unit. 200. A sterilization unit 300, at least one circulating water treatment tank 400, a plurality of membrane filtration units 500, a water return unit 600, and a spray unit 700.

The culture tank 100, together with the reference to the second to fourth figures, is a detachable group tank for containing pre-treated aquaculture water, and is an octagonal hollow formed by a plurality of substrate units 110 adjacent to each other. The groove body has no dead angle on the circulation of the water, and in order to reduce the manufacturing cost of the mold opening, the substrate unit 110 can be expanded by using the equal proportion of the plates 111 and 112, and the joint between the plate body 111 and the plate body 112 is clamped. A watertight bead 113 is provided to prevent leakage of water in the tank. In the embodiment, the plates 111 and 112 are made of hollow fiberglass material (FRP) to achieve weight reduction and convenience. Move and unpack. In addition, the culture tank 100 has a funnel-shaped weir 120 adjacent to one of the substrate units 110, and the height of the weir 120 is slightly lower than the level of the culture water.

Further, a sliding groove 114 is formed on each of the inner sides of the plate bodies 111 and 112. The sliding groove 114 can be embedded in an antibacterial material layer 130 containing silver, copper, cobalt or titanium dioxide (TiO). ₂ ) The stainless steel mesh produced can not only reinforce the impact strength of the plate body, but also has excellent antibacterial and corrosion resistance, and can be taken out from the sliding groove 114 of the plate body 111, 112 to avoid the biological The mucus is deposited on the inner wall of the plate. In addition, a partition plate (not shown) may be additionally embedded on the antibacterial material layer 130 to provide a habitat for the cultured organism and reduce the mutual residue of the fish and shrimp.

The aeration unit 200 further includes a plurality of air supply pipes 210 installed at the bottom of the culture tank 100, a plurality of air conditioning valves 220 communicating with the air supply pipe 210, and a first embodiment as shown in FIGS. 1 and 2, and In the present embodiment, three air supply pipes 210 are arranged in parallel with a horseshoe shape, and each of the air supply pipes 210 is extended in a plurality of laterally alternately. The branch pipe 211, and each branch pipe 211 is further provided with a plurality of aeration holes 212, so that the bottom of the culture tank 100 constitutes a complete and evenly distributed gas supply structure, and the aforementioned air conditioning valve 220 can be connected to an external water quality detector. The measuring system (not shown) can separately adjust the air flow rate of each air supply pipe 210 to provide sufficient dissolved oxygen in the water body in the culture tank 100; in addition, in order to reduce the large amount of aeration The turbulence and boiling of the water body in the tank interferes with the habitat and growth of the cultured organism. We can add a foam generator to each aeration hole 212. The foam generator can pump the gas pair. The culture water is disintegrated and emulsified to form nano-sized micro-bubbles. For related structures, see Patent Nos. 215585, 592795, I348391, M411988, etc., and therefore no further explanation is given.

The sterilizing unit 300 is mounted on the side of the culture tank 100 with reference to the first and seventh figures, and has a casing 310 and at least one ultraviolet light source 320 installed in the casing 310 (this embodiment). An ultraviolet LED lamp having a low power consumption, an intake valve 330 connected to the ultraviolet light source 320, and an ozone supply pipe 340 extending into the bottom of the culture tank 100. In the present embodiment, the ozone supply pipe 340 Similarly, there are a plurality of branch pipes 341 (as shown in FIG. 5), and are disposed on a side away from the culture tank 100 with the weir 120, and are arranged in parallel with the aforementioned gas supply pipe 210 so that ozone can follow The flow of the water liquid forms an automatic diffusion effect. Thus, the ozone generated by the ultraviolet light source 320 is irradiated with air, and a small amount of ozone is timely supplied into the water body of the culture tank 100 to effectively inhibit bacterial and viral proliferation in the water. And the attachment of the culture tank 100 is avoided.

The circulating water treatment tank 400 can also adopt a disassembled tank body adjacent to the side of the culture tank 100 corresponding to the overflow weir 120, and the circulating water treatment tank 400 has a nitrification reaction chamber at the bottom. 410, a membrane filtration chamber 420 located above the nitrification reaction chamber 410, and a sandwiched in the nitrification reaction chamber 410 And a barrier layer 430 between the membrane filtration chambers 420, the nitrification reaction chamber 410 includes a transverse flow tube 411 extending to the bottom of the weir 120, and the nitrification reaction chamber 410 is filled with the embedded nitrifying bacteria 800, and The baffle layer 430 is a perforated mesh having holes to prevent the embedded nitrifying bacteria 800 in the nitrification reaction chamber 410 from directly floating into the membrane filtration chamber 420.

The aforementioned embedded nitrifying bacteria 800 are stacked in a mesh bag in the nitrification reaction chamber 410, which is mixed with activated carbon by a dominant nitrosomonas, and then added with a water-insoluble polymer. The prepared porous immobilized particles, in the embodiment, are jelly-like cubic particles, and the embedded nitrifying bacteria are greatly different from the traditional nitrifying bacteria, in addition to increasing the concentration and residence time of the nitrifying bacteria in the system. In addition to the impact load and low environmental sensitivity of the system, it has the advantages of easy subsequent solid-liquid separation and less residual sludge, and the material consumption is quite low, only need to add 20% of the loss every year. Quite economically.

The membrane filtration unit 500, as shown in Fig. 5 and Fig. 8, is arranged in parallel, which is a circular flat membrane, and is disposed in parallel at equal intervals in the membrane filtration chamber 420, each membrane filtration unit 500 having a production water pipe 510 and a plurality of disc-shaped film pockets 520 disposed on the water production pipe 510, and each film bag 520 is provided with a support net 523 between the two filter membranes 521, 522, and High-frequency welding is applied to the outer edges of the three, and a filtrate passage 524 (see FIG. 9) that is connected to the water production pipe 510 is formed in the center of the filter membranes 521 and 522. In the present embodiment, The filter membranes 521 and 522 are ultrafiltration membranes (UF membranes), and the detailed structure and combination thereof can be referred to the invention patent No. I318133 in the name of the applicant, and therefore no further description is provided.

The water return unit 600 is disposed outside the culture tank 100 as shown in the first, fifth, and seventh figures, and has a water supply connected to the membrane filtration unit 500. a collecting pipe 610 for conveying filtered water at the end of the pipe 510, a pump 620 connected to the end of the collecting pipe 610, and a return pipe 630 connected to a water outlet end of the pump 620, the other end of the return pipe 630 It is connected to the intake valve 330 of the sterilization unit 300, and the ozone generated by the ultraviolet light source 310 is irradiated with air, and the intake valve 320 can be sucked into the circulating water of the return pipe 630 to mix a small amount of ozone. Water is pumped back into the culture tank 100.

The spray unit 700, as shown in FIG. 1 , FIG. 5 and FIG. 6 , is disposed above the membrane filtration unit 500 and has a backwashing tube 710 bypassed by the return pipe 630 , and a The backwash tube 710 is connected to the control valve 720. Further, the backwash tube 710 has a plurality of nozzles 711 corresponding to the membrane filter unit membrane bag.

It should be noted that the present invention utilizes the aeration and oxygen supply in the culture tank 100, and the trace ozone mixed by the ozone supply pipe 340 of the sterilization unit 300 can not only achieve the antibacterial and deodorizing effects, but also because The plurality of air supply pipes 210 distributed at the bottom of the culture tank 100 provide sufficient air, so the ozone is quickly reduced to oxygen without harming the organisms in the water, and has the effect of increasing the dissolved oxygen content of the culture water.

With the above structure, the present invention operates on the air blower 230 of the aeration unit 200, and a large amount of air-containing fine bubbles are driven from the air tube into the water body of the culture tank 100 to aerate and maintain a sufficient amount of dissolved oxygen. At the same time, a large amount of fine bubbles can be generated, and the residual feed and excrement in the culture tank 100 can be floated and lifted up, and then overflowed from the overflow weir 120 to flow out of the culture tank 100, and then, through the overflow culture. When the water passes through the cross flow tube 411 and enters the nitrification reaction chamber 410, the embedded nitrification bacteria 800 can be used to simultaneously perform the simultaneous nitrification and denitrification, thereby removing the ammonia nitrogen and nitric acid in the water. Nitrous nitrite, At the same time, under the driving of the suction pressure of the pump 620 of the water return unit 600, the water body flowing up to the membrane filter chamber 420 can be solid-liquid separated by the vacuum pressure difference, and the UF membrane bag having a pore size of only 0.03 μm is used. 520, to filter out the virus, bacteria, sodium hypochlorite in the water body, and a small amount of sludge and insoluble solids formed by the nitrification, and the filtrate sequentially passes through the water production pipe 510 and the liquid collection pipe 610 toward the water return pipe 630. The pumping is finally pumped back into the culture tank 100 by the ozone supply pipe 340 to form circulating water for use.

The majority of the residue and sludge trapped in the nitrification reaction chamber 410 can be discharged through the slag discharge hole 440 at the bottom of the circulating water treatment tank 400 in a timely manner, and then passed through a recovery device (such as a filter press or a filter). After the concentrated drainage, the organic fertilizer is reused, and the supernatant of the concentrated water can be returned to the water storage tank as a preliminary circulating water.

When the membrane filtration unit 500 is operated for a period of time, the surface of the membrane bag 510 is attached with sludge and solid particles. At this time, the pump 620 can be operated to stop the filtrate extraction, and the control valve 720 of the spray unit 700 is opened. The backwashing pipe 700 can draw the circulating water on the return pipe, and then spray the water column from the nozzle 711 to spray the film bag 510 of the membrane filtering unit 500, as shown in FIG. 6, to achieve the effect of automatically cleaning the film bag 510. The washed aqueous liquid can be discharged from the membrane filtration chamber 420.

Further, as shown in FIG. 10, the culture tank 100 of the present invention may be a single-tank type, or may be assembled in a parallel manner by using a common feature between the plates (shown as a triple type). Achieve the use efficiency of the breeding space to maximize.

Finally, the effects and advantages of the "high-density culture circulating water treatment equipment" of the present invention are summarized as follows.

1. The invention can make the water body in the culture tank 100 have a complete aeration effect, and in addition to providing sufficient dissolved oxygen amount, the residual bait and excrement can be more effectively performed. Floating outside the tank, plus the trace ozone provided by the sterilization unit 300, and the plate body 111, 112 lined with the antibacterial material layer 130, effectively avoiding the formation of viruses and bacteria, so there is an excellent aquaculture water body, which can increase the biological breeding density and Live rate.

2. Since the culture tank 100 and the circulating water treatment tank 400 of the present invention all use the equal proportion of the substrate unit 110 to expand and expand, therefore, in practical use, the group can be quickly assembled according to the demand of the tank body. In addition to the diversified application, the board is transported in a standardized package, which facilitates the convenience of transportation and saves transportation costs.

Third, because the plate body of the substrate unit 110 of the culture tank 100 can be disassembled, and the lining antibacterial material layer 130 can also be taken out and cleaned, there is no dead angle on the cleaning, and the biofilm can be prevented from adhering to the groove wall, thereby generating a virus. To reduce the incidence of cultured organisms and increase survival rate.

4. The present invention integrates the biological treatment and membrane filtration treatment devices into the same circulating water treatment tank 400, and the circulating water treatment tank 400 can be directly adjacent to the culture tank 100, so that the equipment occupies a small area, so that the entire breeding base Can be used effectively.

5. Since the film bag 510 of the filter unit 500 can be periodically sprayed with water, it is not easy to be clogged, and the filter media is not required to be replaced frequently, which not only improves the service life of the film bag 510, but also has the function of saving the use cost.

6. When the present invention performs denitrification and membrane filtration treatment in the circulating water treatment tank 400, a large amount of aeration is not required, so that only the same pump 620 can be used to pump the filtered circulating water back to the culture tank 100. Therefore, the equipment consumes low energy, and the circulating water does not need to be added with any chemical fungicide, which is more environmentally friendly and safe.

The above is only one embodiment of the present invention, and should not be construed as limiting the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention should be Still belongs to the patent of the present invention Within the scope of coverage.

100‧‧‧ breeding tank

110‧‧‧Substrate unit

111‧‧‧ board

112‧‧‧ board

113‧‧‧Watertight beading

114‧‧‧Chute

120‧‧‧Overflow

130‧‧‧Antibacterial material layer

200‧‧‧Aeration unit

210‧‧‧ gas supply pipe

211‧‧‧ branch tube

212‧‧‧Aeration holes

220‧‧‧Air regulating valve

230‧‧‧Blowers

300‧‧‧Sterilization unit

310‧‧‧ shell

320‧‧‧UV light source

330‧‧‧ Inhalation valve

340‧‧‧Ozone supply tube

341‧‧‧ branch tube

400‧‧‧Circulating water treatment tank

410‧‧‧Nitration reaction chamber

411‧‧‧ transverse flow tube

420‧‧‧ membrane filtration chamber

430‧‧ ‧ net layer

440‧‧‧ slag hole

500‧‧‧membrane filter unit

510‧‧‧ water pipes

520‧‧‧ film bag

521‧‧‧ filter

522‧‧‧ filter

523‧‧‧Support net

524‧‧‧ filtrate birth canal

600‧‧‧backwater unit

610‧‧ ‧ collecting tube

620‧‧‧ pump

630‧‧‧ return pipe

700‧‧‧Spray unit

710‧‧‧Backwash tube

720‧‧‧Control valve

711‧‧‧ sprinkler

800‧‧‧ Nitrifying bacteria

Fig. 1 is a system diagram of the apparatus for processing a high-density culture circulating water of the present invention.

Figure 2 is a top view of the culture tank and the circulating water treatment tank.

Figure 3 is a partial cross-sectional view of the substrate unit of the culture tank.

Figure 4 is an enlarged view of the imaginary coil selection in Figure 3.

Figure 5 is a perspective perspective view of the culture tank and the circulating water treatment tank.

Figure 6 is a partial cross-sectional side view of the circulating water treatment tank.

Fig. 7 is a sectional view showing the combination of the sterilization unit.

Figure 8 is a combined cross-sectional view of the filter unit.

Figure 9 is a cross-sectional view of the film bag.

Figure 10 is a schematic diagram showing the use of a parallel array of culture tanks connected in parallel.

100‧‧‧ breeding tank

120‧‧‧Overflow

200‧‧‧Aeration unit

210‧‧‧ gas supply pipe

211‧‧‧ branch tube

220‧‧‧Air regulating valve

230‧‧‧Blowers

300‧‧‧Sterilization unit

340‧‧‧Ozone supply tube

400‧‧‧Circulating water treatment tank

500‧‧‧ membrane filtration unit

600‧‧‧backwater unit

610‧‧ ‧ collecting tube

620‧‧‧ pump

630‧‧‧ return pipe

710‧‧‧Backwash tube

720‧‧‧Control valve

Claims (10)

The utility model relates to a processing device for high-density culture circulating water, comprising: at least one culture tank, which is a detachable group tank body, is used for supporting culture water, and is an octagonal hollow formed by a plurality of substrate units adjacent to each other; a tank body, and the culture tank has an overflow weir; an aeration unit has a plurality of gas supply pipes installed at the bottom of the culture tank to drive outside air into the water body for aeration and maintain the dissolved oxygen amount, and at the same time A large amount of fine bubbles are generated, and the residual feed and excrement in the culture tank can be floated up and pushed up, and then overflowed and overflowed from the overflow tank to flow out of the culture tank; at least one circulating water treatment tank is a detachable group The tank body is connected to a side of the culture tank corresponding to the overflow weir, the circulating water treatment tank has a nitrification reaction chamber at the bottom and a membrane filtration chamber located above the nitrification reaction chamber, the nitrification The reaction chamber is filled with an embedded nitrifying bacteria and includes a cross-flow tube extending to the overflow weir, the cross-flow tube just guiding the water flowing out of the culture tank into the nitrification reaction chamber, and utilizing the nitrifying bacteria therein Come into sync Nitrification/denitrification, thereby removing ammonia nitrogen and nitric acid and nitrite from water; at least one membrane filtration unit is a round flat membrane, and is set in a membrane filtration chamber, having at least one water producing pipe and a plurality of watertight places a disc-shaped film bag disposed on the water production pipe, a filtrate production channel connected to the water production pipe is formed in a center of each film bag; and a water return unit is disposed outside the culture tank, and has a connection a water pump at one end of the water production pipe, a water return pipe connected to a water outlet end of the water pump, the water return pipe is extended to the culture tank, and driven by the suction pressure of the pump, the water body in the membrane filtration chamber can be driven by The vacuum pressure difference is used for solid-liquid separation to remove viruses, bacteria, sodium hypochlorite and insoluble solids in the water, and the filtrate can pass through The production water pipe and the return water pipe are pumped back into the culture tank to form circulating water for use. The processing device for high-density culture circulating water according to claim 1, wherein the substrate unit can be extended by an equal proportion of plate splicing, and the aeration unit has a plurality of gas supply pipes respectively. The connected air regulating valve has a plurality of branch pipes extending in a staggered manner in each of the air supply pipes, and each of the branch pipes is provided with a plurality of aeration holes. The processing device for high-density culture circulating water according to claim 2, wherein an antibacterial material layer is respectively disposed on the inner side surface of the plate body to prevent the biological mucus from accumulating on the inner wall of the plate. The processing device for high-density aquaculture using circulating water as described in claim 3, wherein the antibacterial material layer is a stainless steel mesh made of silver, copper, cobalt, titanium dioxide, and can be self-plate Take out the cleaning. The processing device for high-density culture circulating water according to claim 1, further comprising a sterilization unit capable of supplying a trace amount of ozone into the water body of the culture tank. The processing apparatus for high-density culture circulating water according to claim 5, wherein the sterilization unit has at least one ultraviolet light source, an inhalation valve connected to the ultraviolet light source, and at least one installed in the culture tank. An ozone supply pipe connected to the suction valve at the bottom, the ozone supply pipe is disposed on a side away from the overflow weir of the culture tank, so that ozone can automatically diffuse with the flow of water. The processing device for high-density culture circulating water according to claim 1, wherein the circulating water treatment tank further has a mesh layer for separating the nitrification reaction chamber and the membrane filtration chamber, the barrier network The layer is a perforated mesh with holes to prevent the embedded nitrifying bacteria from floating directly into the membrane filtration chamber. Where high-density cultured circulating water is mentioned in the scope of claim 1 The apparatus further includes a spray unit installed above the membrane filtration unit and having a backwash tube bypassed by the return pipe for directly drawing the circulating water to spray the membrane filtration unit Membrane bag. The processing device for high-density culture circulating water according to the first aspect of the invention, wherein the encapsulating nitrifying bacteria filled in the nitrification reaction chamber is mixed with activated carbon after the dominant nitrifying bacteria is added, and is insoluble in water. The porous immobilized particles produced by curing the high molecular polymer. The processing apparatus for high-density culture circulating water according to claim 1, wherein the bottom of the circulating water treatment tank is provided with a row of slag holes.