CN112573778A

CN112573778A - Aquaculture sewage treatment integration equipment

Info

Publication number: CN112573778A
Application number: CN202011561114.5A
Authority: CN
Inventors: 李占勤; 刘湘安
Original assignee: Guangzhou Qili Environmental Equipment Co ltd
Current assignee: Guangzhou Qili Environmental Equipment Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-03-30

Abstract

The invention discloses aquaculture sewage treatment integrated equipment, which comprises a water tank, a drum-type micro-filter and a biological rotating disc, wherein the water tank is provided with a physical filter box and a biological filter box; the physical filter box is internally provided with a water inlet cabin, a sterilization cabin, a precipitation cabin and a filter cabin, the water inlet cabin is communicated with the sterilization cabin, the sterilization cabin is communicated with the precipitation cabin, and sewage enters the precipitation cabin after entering the sterilization cabin from the water inlet cabin; the inner cavity of a roller of the roller type micro-filter is communicated with a sedimentation cabin, water in the sedimentation cabin enters the inner cavity of the roller through the inner cavity, and a biological filter box is communicated with a filter cabin and is rotatably provided with a biological rotating disc; sewage in the inner cavity of the roller is filtered by a filter screen on the roller and then enters a biological filter box for biological filtration by means of a biological rotating disc; the biological filter tank is internally provided with a water outlet cabin, and water filtered by the biological rotating disc is discharged from the water outlet cabin. The integrated equipment of the invention physically filters and biologically filters the sewage to obtain better purification effect, has small floor area and is suitable for miniaturized aquaculture.

Description

Aquaculture sewage treatment integration equipment

Technical Field

The invention relates to the field of sewage treatment, in particular to an aquaculture sewage treatment integrated device.

Background

At present, the cost including investment and operating cost required by a sewage treatment system of aquaculture is high, so that the system is greatly restricted in popularization and application. The applicant combines the water treatment technology of the recirculating aquaculture with the engineered ecological purification technology to realize the ecological and aquaculture wastewater recycling in the aquaculture process, develops an energy-saving and efficient aquaculture mode with low cost and easy popularization, and is suitable for the miniaturized aquaculture.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide aquaculture sewage treatment integrated equipment which has the advantages of low operation cost, good purification effect, high comprehensive benefits of energy and environment and the like, does not need special management, only needs to maintain and maintain the equipment in time, has low management cost, small floor area, convenient integration and convenient operation, and is suitable for miniaturized aquaculture.

The purpose of the invention is realized by adopting the following technical scheme:

an aquaculture sewage treatment integrated device comprises a water tank, a drum-type micro-filter and a biological rotating disc, wherein the water tank is provided with a physical filter tank and a biological filter tank;

the physical filter box is internally provided with a water inlet cabin, a sterilization cabin, a sedimentation cabin and a filter cabin, the water inlet cabin is communicated with the sterilization cabin, the aquaculture sewage enters the sterilization cabin from the water inlet cabin for sterilization,

the sterilization cabin is communicated with the precipitation cabin, and the sterilization device is arranged on the sterilization cabin, so that sewage entering the sterilization cabin can enter the precipitation cabin for precipitation after being sterilized;

the drum-type micro-filter is provided with a drum and a driving device, the drum is rotatably arranged in the filtering cabin and is driven by the driving device, the inner cavity of the drum is communicated with the settling cabin, so that water in the settling cabin can enter the inner cavity of the drum after being settled,

the roller is provided with a filter screen, and sewage in the inner cavity of the roller enters the bottom of the filter cabin after being filtered by the filter screen;

the biological rotating disc is rotatably arranged in the biological filtering tank, and the rotating circumferential surface part of the biological rotating disc is immersed in the water in the biological filtering tank;

the integrated equipment is also provided with a driving mechanism, and the driving mechanism is used for driving the biological rotating disc to rotate;

the biological filter tank is communicated with the filter cabin, so that water filtered by the filter screen can enter the biological filter tank and is biologically filtered by the rotating biological rotating disc;

the biological filter tank is internally provided with a water outlet cabin, and water filtered by the biological rotating disc is discharged from the water outlet cabin.

Furthermore, a reverse flushing device is arranged in the filtering cabin and used for cleaning impurities attached to the filter screen.

Furthermore, the reverse flushing device comprises a high-pressure cleaning water pump, a plurality of cleaning nozzles, a sewage collecting pipe groove and a sewage collecting cabin;

the filter cabin is internally provided with fixed rods, the fixed rods are positioned outside the roller and arranged along the length direction of the roller, the cleaning nozzles are arranged on the fixed rods, and the cleaning nozzles face the filter screen and are uniformly distributed at intervals along the length direction of the fixed rods;

the sewage collecting cabin is arranged in the physical filter box, the sewage collecting pipe groove is arranged in the inner cavity of the roller, and the water outlet end of the sewage collecting pipe groove extends into the sewage collecting cabin, so that sewage which reversely washes the filter screen can be discharged into the sewage collecting cabin through the sewage collecting pipe groove;

the high-pressure cleaning water pump is fixed on the outer wall of the water tank, the cleaning nozzle is connected with the output end of the high-pressure cleaning water pump through a water pipe, and the water outlet cabin is connected with the input end of the high-pressure cleaning water pump through a water pipe.

Furthermore, a sewage collecting box is arranged in the sewage collecting cabin and is arranged right below the water outlet end of the sewage collecting pipe groove, so that sewage in the sewage collecting pipe groove can enter the sewage collecting box; the sewage collecting box is provided with a plurality of filtering holes communicated with the sewage collecting cabin, so that water in the sewage collecting box enters the sewage collecting cabin, and sewage is concentrated in the sewage collecting box.

Furthermore, a waterproof ultraviolet lamp is installed in the sterilization cabin and is used for sterilizing sewage.

Further, the roller is arranged in the filtering cabin along the length direction of the physical filtering box;

the rotary drum comprises a left disc, a right disc and a filtering rotor, the left disc and the right disc are connected through the filtering rotor, the left disc is rotatably installed on the inner wall of one side of the filtering cabin through a rotating shaft, a disc supporting piece is arranged on the inner wall of the other side of the filtering cabin, the right disc is rotatably installed on the disc supporting piece, and the right disc is also in driving connection with a driving device, so that the rotary drum can rotate in the filtering cabin under the driving of the driving device;

the filter rotor is made of a porous cylindrical structural plate, the filter screen is sleeved on the outer wall of the porous cylindrical structural plate, and the right disc is provided with a water inlet communicated with the precipitation chamber, so that water in the precipitation chamber enters the inner cavity of the roller from the position of the water inlet.

Further, the driving device comprises a first driving motor, a first driving gear and a first driven gear, the first driving motor is fixed on the inner wall of the physical filter box, the output end of the first driving motor is in driving connection with the first driving gear, the first driven gear is fixedly arranged on the right disc, the first driven gear is in meshing transmission with the first driving gear, and under the driving of the first driving motor, the meshing transmission of the first driving gear and the first driven gear is utilized, so that the roller can rotate.

Further, the biological rotating disc is rotatably arranged in the biological filter box by virtue of a rotating shaft;

the driving mechanism comprises a second driving motor, a second driving gear and a second driven gear, the second driving motor is fixed on the outer wall of the biological filter box, the output end of the second driving motor is in driving connection with the second driving gear, the second driven gear is arranged on the biological rotating disc and in meshing transmission with the second driving gear, the biological rotating disc is driven by the second driving motor and in meshing transmission with the second driving gear, and therefore the biological rotating disc can rotate.

Further, the biological rotating disc is provided with a disc, a biological membrane for attaching microorganisms is arranged on the disc, water after physical filtration enters the biological filtration tank, the disc positioned in the biological filtration tank is immersed, and organic pollutants in the water are degraded through the biological membrane to purify the water.

Furthermore, a drain outlet is formed in the physical filter box and used for draining the water tank.

Compared with the prior art, the invention has the beneficial effects that:

the invention physically filters the aquaculture sewage in the physical filter tank by the drum-type micro-filter, and then biologically filters the aquaculture sewage in the biological filter tank by the biological rotating disc, thereby obtaining better purification effect, having high comprehensive benefit of energy and environment, having low operation cost of the integrated equipment, needing no special management, only needing to timely maintain and maintain the equipment, having small management cost, small floor area, convenient integration and convenient operation, and being suitable for miniaturized aquaculture.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a third schematic structural view of the present invention;

FIG. 4 is a fourth schematic structural view of the present invention;

FIG. 5 is a schematic diagram of a disc support according to an embodiment of the present invention.

In the figure: 1. a water tank; 10. a physical filter box; 101. a water inlet cabin; 102. a sterilization cabin; 103. a settling chamber; 1030. a second separator; 10300. a water inlet hole; 1031. a third partition plate; 104. a filtration compartment; 1040. fixing the rod; 105. a sewage collection cabin; 1050. a dirt collecting box; 11. a biological filter tank; 110. a rotating biological disk; 111. a water outlet cabin; 2. a first separator; 20. a first base plate; 21. a second base plate; 3. a drum-type microfilter; 30. a drive device; 300. a first drive motor; 301. a first drive gear; 302. a first driven gear; 303. a reducer A; 31. a drum; 310. a right disc; 3100. a water inlet; 311. a left disc; 3110. a rotating shaft; 312. a disc support; 3120. an installation part; 3121. a fixed part; 31210. a semicircular notch; 4. a drive mechanism; 40. a second drive motor; 41. a second driving gear; 42. a second driven gear; 43. a reducer B; 5. a sewage collecting pipe groove; 6. a sewage draining outlet.

Detailed Description

The present invention will be described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the following description, various embodiments or technical features may be arbitrarily combined to form a new embodiment without conflict.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The implementation mode is as follows:

as shown in fig. 1-5, the present invention shows an aquaculture sewage treatment integrated device, which comprises a water tank 1, a drum-type microfiltration machine 3 and a biological rotating disk 110, wherein the water tank 1 is provided with a physical filter box 10 and a biological filter box 11, as an application scenario, a fish tank (not shown) is arranged on the top of the water tank 1, aquaculture sewage in the fish tank enters the water tank 1, the physical filter box 10 is used for performing physical filtration on the sewage, and the biological filter box 11 is used for performing biological filtration on the sewage after the physical filtration, so that the aquaculture sewage obtains a good purification effect.

The physical filter box 10 is internally provided with a water inlet cabin 101, a sterilization cabin 102 and a precipitation cabin 103; the water inlet cabin 101 is communicated with the sterilization cabin 102, and the aquaculture sewage enters the sterilization cabin 102 from the water inlet cabin 101 for sterilization; namely, the water inlet cabin 101 and the sterilization cabin 102 are separated by the first partition plate 2, the bottoms of the water inlet cabin 101 and the sterilization cabin 102 are formed by the first bottom plate 20, but the bottom end of the first partition plate 2 does not extend to the first bottom plate 20, so that the water inlet cabin 101 is communicated with the sterilization cabin 102, namely, the aquaculture sewage in the fish tank enters the water tank 1 from the position of the water inlet cabin 101, and the sewage entering the water inlet cabin 101 enters the sterilization cabin 102 from the bottom of the partition plate; a sterilization device is arranged in the sterilization chamber 102, and the sterilization device is preferably provided with a waterproof ultraviolet lamp for sterilizing the sewage, that is, the ultraviolet lamp is used for sterilizing the sewage entering the water tank 1.

The sterilization cabin 102 is communicated with the precipitation cabin 103, so that sewage entering the sterilization cabin 102 can enter the precipitation cabin 103 for precipitation after being sterilized; in this preferred embodiment, the precipitation chamber 103 is located at a side portion of the sterilization chamber 102, the bottom of the precipitation chamber 103 is lower than the bottom of the sterilization chamber 102, the precipitation chamber 103 is separated from the sterilization chamber 102 by the second partition plate 1030, a water inlet 10300 is formed in a middle top position of the second partition plate 1030, and the water inlet 10300 is used for communicating the precipitation chamber 103 with the sterilization chamber 102, so that water in the sterilization chamber 102 is sterilized and then enters the precipitation chamber 103 from the position of the water inlet 10300 for precipitation, and further, the aquaculture wastewater in the fish tank enters the sterilization chamber 102 from the water inlet 101 for sterilization and then enters the precipitation chamber 103 for precipitation.

The physical filter box 10 further has a filter compartment 104 therein, and the filter compartment 104 is disposed at the side of the settling compartment 103, i.e. the filter compartment 104 is separated from the settling compartment 103 by a third partition 1031. The drum-type microfilter 3 has a drum 31 and a driving device 30, the drum 31 is rotatably disposed in the filter chamber 104 and is driven by the driving device 30, that is, the drum 31 rotates in the filter chamber 104 under the driving of the driving device 30. Of course, the inner cavity of the drum 31 is communicated with the settling chamber 103, so that water in the settling chamber 103 can enter the inner cavity of the drum 31 after being settled; the drum 31 is provided with a screen, and sewage in the inner cavity of the drum 31 rolls along with the rotation of the drum 31 and can enter the bottom of the filtering chamber 104 after being filtered by the screen. That is, it can be understood that the sewage in the settling chamber 103 firstly enters the inner cavity of the drum 31, and the sewage in the inner cavity of the drum 31 falls into the bottom of the filtering chamber 104 after being filtered (physically filtered) by the filter screen on the drum 31.

The biological filter tank 11 is communicated with the filter cabin 104, so that water filtered by the filter screen can enter the biological filter tank 11, that is, the biological filter tank 11 and the bottom plate of the filter cabin 104 are formed by the second bottom plate 21, and sewage in the filter cabin 104 enters the biological filter tank 11 from the lower part of the sedimentation cabin 103. The biological rotating disk 110 is rotatably arranged in the biological filtering tank 11, in this embodiment, the biological rotating disk 110 is preferably rotatably arranged in the biological filtering tank 11 by a rotating shaft; the rotating circumferential surface of the biological rotating disk 110 is partially immersed in the water in the biological filtering tank 11, that is, the water in the biological filtering tank 11 submerges part of the biological rotating disk 110. Of course, the integrated apparatus further has a driving mechanism 4, and the driving mechanism 4 is used for driving the rotation of the bio-disc 110. That is, it can be understood that in the biofiltration tank 11, the sewage is biofiltrated by means of the rotating biological rotating disk 110.

Specifically, the biological rotating disk 110 has a disk, the disk has a biological membrane for microorganisms to attach to, and the water after physical filtration enters the biological filtration tank 11 to immerse the disk in the biological filtration tank 11, so that the biological membrane degrades organic pollutants in the water to purify the water. That is, when the biological rotating disk 110 rotates, the sewage flows along the interstitial holes of the disk, the organic matters in the sewage are adsorbed by the biological film on the rotating disk, when the disk rotates away from the water surface, a layer of sewage film is formed on the surface of the disk layer, the oxygen in the air is continuously dissolved in the water film, the microorganisms in the biological film absorb the dissolved oxygen, the adsorbed organic pollutants are oxidized and decomposed, once the disk rotates for one circle, the processes of adsorption-oxygen absorption-oxidative decomposition are carried out, the rotating disk continuously rotates, the sewage in the biological filtering box 11 is continuously stirred and oxygenated by the rotation of the rotating disk, and the pollutants are continuously oxidized and decomposed, so that the sewage is purified. Of course, the interior of the biofiltration tank 11 is provided with a water outlet chamber 111, and the water filtered by the biological rotating disk 110 is discharged from the water outlet chamber 111, that is, the water outlet chamber 111 is communicated with the biofiltration tank 11, and the water purified by the biofiltration enters the water outlet chamber 111, so that the water in the water outlet chamber 111 can be input into the fish tank by a water pump for recycling.

To sum up, the invention physically filters the aquaculture sewage in the physical filter tank 10 through the drum-type micro-filter 3, and then biologically filters the aquaculture sewage in the biological filter tank 11 by using the biological rotating disc 110, thereby obtaining better purification effect, having high comprehensive benefits of energy and environment, having low operation cost, needing no special management, needing only timely maintenance and repair of the equipment, having small management cost, simultaneously having small occupied area, convenient integration and convenient operation, and being suitable for miniaturized aquaculture.

In a preferred embodiment, a back-flushing device is disposed in the filtering chamber 104 for cleaning the impurities attached to the filtering net, i.e. the impurities on the filtering net are flushed away by the back-flushing device. Specifically, the back flushing device includes a high pressure cleaning water pump (not shown), a plurality of cleaning nozzles (not shown), a sewage collecting pipe tank 5 and a sewage collecting chamber 105; the filtering chamber 104 is internally provided with fixing rods 1040, the fixing rods 1040 are positioned outside the roller 31 and arranged along the length direction of the roller 31, the cleaning nozzles are arranged on the fixing rods 1040, and the cleaning nozzles face the filtering net and are uniformly arranged along the length direction of the fixing rods 1040 at intervals; the sewage collecting cabin 105 is arranged in the physical filter box 10, the sewage collecting pipe groove 5 is arranged in the inner cavity of the roller 31, and the water outlet end of the sewage collecting pipe groove 5 extends into the sewage collecting cabin 105, so that sewage which reversely washes the filter screen can be discharged into the sewage collecting cabin 105 through the sewage collecting pipe groove 5; the high-pressure cleaning water pump is fixed on the outer wall of the water tank 1, the cleaning nozzle is connected with the output end of the high-pressure cleaning water pump by virtue of a water pipe, and the water outlet cabin 111 is connected with the input end of the high-pressure cleaning water pump by virtue of a water pipe.

When the filter screen on the cylinder 31 appears blockking up, when leading to the sewage of cylinder 31 inner chamber to filter slower, can start this moment reverse flushing device, reverse flushing device utilizes the high pressure cleaning water pump will in the use the water purification in the play water compartment 111 is taken out and is washd the nozzle, and the nozzle is spouted clearly to the filter screen on the cylinder 31 to wash impurity on the filter screen to the dirty tub of collection 5 of locating the cylinder 31 inner chamber, and dirty tub of collection 5 of collection is leading-in to the dirty cabin 105 of collection of sewage (containing impurity) that wash to accomplish the reverse flushing of filter screen, improve the filter efficiency of filter screen.

As a preferred embodiment, a sewage collecting box 1050 is arranged in the sewage collecting chamber 105, and the sewage collecting box 1050 is arranged right below the water outlet end of the sewage collecting pipe tank 5, so that sewage in the sewage collecting pipe tank 5 can enter the sewage collecting box 1050; the dirt collecting box 1050 is provided with a plurality of filtering holes communicated with the dirt collecting cabin 105, so that water in the dirt collecting box 1050 enters the dirt collecting cabin 105, and dirt is collected in the dirt collecting box 1050. That is, the sewage in the sewage collecting pipe tank 5 enters the sewage collecting cabin 105, and the impurities enter the sewage collecting box 1050, so that the impurities can be conveniently and intensively treated.

In a preferred embodiment, the drum 31 is disposed in the filter chamber 104 along the length direction of the physical filter box 10; the drum 31 includes a left disc 311, a right disc 310 and a filter rotor (not shown), the left disc 311 is connected with the right disc 310 via the filter rotor, the left disc 311 is rotatably installed on the inner wall of one side of the filter chamber 104 via a rotation shaft 3110, and a disc support member 312 is provided on the inner wall of the other side of the filter chamber 104. As shown in fig. 5, the disc support member 312 has a fixing portion 3121 and a mounting portion 3120, the fixing portion 3121 is fixed to the sidewall of the settling compartment 103, that is, the fixing portion 3121 of the disc support member 312 is fixed to the third partition 1031, and the mounting portion 3120 of the disc support member 312 has a cylindrical structure through which the mounting portion 3120 of the cylindrical structure is connected to the right disc 310. Further, the right disc 310 has a mounting hole adapted to the mounting portion 3120, and the right disc 310 is rotatably mounted to the mounting portion 3120 of the disc support 312 by using the mounting hole, that is, the right disc 310 is coaxially disposed with the mounting portion 3120. The right disc 310 is provided with a water inlet 3100 communicated with the settling chamber 103, the water inlet 3100 is a semicircular notch 31210 communicated with the inner cavity of the mounting portion 3120 and formed on the fixing portion 3121 of the disc supporting member 312, so that the water in the settling chamber 103 enters the inner cavity of the mounting portion 3120 having a cylindrical structure from the position of the circular notch and then enters the inner cavity of the drum 31, the semicircular notch 31210 is arranged to make the water in the settling chamber 103 slowly flow into the inner cavity of the drum 31, and the filtering effect is good; of course, the filter rotor is made of a porous cylindrical structural plate, the filter screen is sleeved on the outer wall of the porous cylindrical structural plate, and the sewage entering the inner cavity of the roller 31 passes through the filter screen and then falls to the bottom of the filter cabin 104 to enter the biological filter box 11.

The right disc 310 is also in driving connection with the driving means 30, so that the drum 31 can be driven by the driving means 30 to rotate in the filter chamber 104. Specifically, the driving device 30 includes a first driving motor 300, a first driving gear 301 and a first driven gear 302, the first driving motor 300 is fixed on the inner wall of the physical filter box 10, the output end of the first driving motor 300 is in driving connection with the first driving gear 301, the first driven gear 302 is fixed on the right circular disc 310, the first driven gear 302 is in meshing transmission with the first driving gear 301, and under the driving of the first driving motor 300, the first driving gear 301 and the first driven gear 302 are in meshing transmission, so that the drum 31 can rotate. That is, the first driving motor 300 drives the first driving gear 301 to rotate, and the rotation of the first driving gear 301 drives the first driven gear 302 to rotate, thereby driving the rotation of the drum 31. Of course, a reducer a303 is disposed between the first driving motor 300 and the first driving gear 301, and the reducer a303 is utilized to slowly rotate the first driving gear 301, so that the roller 31 slowly rotates in the filtering compartment 104, and the filtering effect of the filter screen on the roller 31 is better.

As a preferred embodiment, the driving mechanism 4 for driving the biological rotating disc 110 comprises a second driving motor 40, a second driving gear 41 and a second driven gear 42, the second driving motor 40 is fixed on the outer wall of the biological filtering tank 11, the output end of the second driving motor 40 is in driving connection with the second driving gear 41, the second driven gear 42 is arranged on the biological rotating disc 110 and is in meshing transmission with the second driving gear 41, and the biological rotating disc 110 can rotate under the driving of the second driving motor 40 and by means of the meshing transmission of the second driving gear 41 and the second driven gear 42. That is, the second driving motor 40 drives the second driving gear 41 to rotate, and the rotation of the second driving gear 41 drives the second driven gear 42 to rotate, so as to drive the rotating biological rotating disc 110 to rotate. Of course, a speed reducer B43 is disposed between the second driving motor 40 and the second driving gear 41, and the speed reducer B43 is used to make the second driving gear 41 rotate slowly, so that the bio-disc 110 rotates slowly, and the filtering effect of the bio-disc 110 is better. In addition, a multi-stage biological rotating disk 110 can be arranged in the biological filtering tank 11, and the biological rotating disk 110 can be in gear transmission, so as to further improve the sewage purifying effect.

As a preferred embodiment, a sewage draining outlet 6 is formed in the physical filter box 10, and the sewage draining outlet 6 is preferably arranged at the bottom of the side wall of the physical filter box 10 and used for draining sewage from the water tank 1. That is, the sewage in the water tank 1 can be discharged through the sewage discharge port 6. Of course, it will be understood by those skilled in the art that the integrated apparatus of the present invention is in a closed state during the process of filtering the sewage, and the sewage discharge outlet 6 is in a closed state.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides an aquaculture sewage treatment integration equipment which characterized in that: the biological filter comprises a water tank, a drum-type micro-filter and a biological rotary disc, wherein the water tank is provided with a physical filter box and a biological filter box;

2. An aquaculture sewage treatment integrated device according to claim 1, wherein: and a reverse flushing device is arranged in the filtering cabin and used for cleaning impurities attached to the filter screen.

3. An aquaculture sewage treatment integrated device according to claim 2, wherein: the reverse flushing device comprises a high-pressure cleaning water pump, a plurality of cleaning nozzles, a sewage collecting pipe groove and a sewage collecting cabin;

4. An aquaculture sewage treatment integrated device according to claim 3, wherein: a sewage collecting box is arranged in the sewage collecting cabin and is arranged right below the water outlet end of the sewage collecting pipe groove, so that sewage in the sewage collecting pipe groove can enter the sewage collecting box; the sewage collecting box is provided with a plurality of filtering holes communicated with the sewage collecting cabin, so that water in the sewage collecting box enters the sewage collecting cabin, and sewage is concentrated in the sewage collecting box.

5. An aquaculture sewage treatment integrated device according to claim 1, wherein: the sterilizing device is a waterproof ultraviolet lamp.

6. An aquaculture sewage treatment integrated device according to claim 1, wherein: the roller is arranged in the filtering cabin along the length direction of the physical filtering box;

7. An aquaculture sewage treatment integrated device according to claim 6, wherein: the driving device comprises a first driving motor, a first driving gear and a first driven gear, the first driving motor is fixed on the inner wall of the physical filter box, the output end of the first driving motor is in driving connection with the first driving gear, the first driven gear is fixedly arranged on the right disc, the first driven gear is in meshing transmission with the first driving gear, the first driving motor is driven to drive the first driving gear and the first driven gear in meshing transmission, and therefore the roller can rotate.

8. An aquaculture sewage treatment integrated device according to claim 1, wherein: the biological rotating disc is rotatably arranged in the biological filter box by virtue of a rotating shaft;

9. An aquaculture sewage treatment integrated device according to claim 1, wherein: the biological rotating disc is provided with a disc, a biological membrane for attaching microorganisms is arranged on the disc, water after physical filtration enters the biological filtration tank, the disc positioned in the biological filtration tank is immersed, and organic pollutants in the water are degraded by means of the biological membrane to purify the water.

10. An aquaculture sewage treatment integrated device according to claim 1, wherein: and a sewage discharge outlet is formed in the physical filter box and used for discharging sewage of the water tank.