CN212532670U

CN212532670U - Reclaimed water recycling device for waste water

Info

Publication number: CN212532670U
Application number: CN202021072381.1U
Authority: CN
Inventors: 刘福勇
Original assignee: Hezheng Environmental Protection Engineering Co ltd
Current assignee: Hezheng Environmental Protection Engineering Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-12
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a reclaimed water recycling device for waste water, which comprises a sedimentation tank, a moving bed biofilm reactor and a disinfection tank which are arranged from front to back in sequence; the lower part of the sedimentation tank is connected with a plastic threaded pipe and a collecting hopper; a vibrating plate, a vibrating hole and a vibrating motor are arranged at the lower part of the sedimentation tank; the supporting columns are provided with supporting plates and compression springs; an air pump and a water pump are respectively arranged at the upper part of the moving bed biofilm reactor; suspended fillers are distributed in the moving bed biofilm reactor; a membrane treatment device is arranged in the middle of the moving bed biofilm reactor; and a main aeration pipe, a branch aeration pipe and an exhaust pipe are arranged on the bottom wall of the inner side of the moving bed biofilm reactor. The utility model discloses can carry out the normal water treatment to the waste water of the toilet bowl emission of district bathroom to can carry out recycle to excrement and urine, make the nourishment that contains in the excrement and urine obtain abundant recycle, and reduce the pollution that direct emission caused the environment.

Description

Reclaimed water recycling device for waste water

Technical Field

The utility model relates to a waste water treatment technical field especially relates to a reuse of reclaimed water device of waste water.

Background

In the residential community where urban residents live, the water demand is large, and a considerable proportion of water has relatively low requirements on water quality, such as greening irrigation of the community, road flushing, household toilet flushing and the like, and the water can completely meet the requirements of the water quality of the part of water in use.

The residential domestic wastewater mainly comes from wastewater generated in a toilet and wastewater generated in a kitchen, does not contain toxic and harmful substances, has relatively high nitrogen and phosphorus content and good biodegradability, is suitable for being used as reclaimed water after treatment, can reduce the pollution of direct emission of the residential domestic wastewater to the environment, can increase the quantity of available water resources, and has obvious economic and social benefits.

The prior art is used for the waste water normal water treatment equipment in district, only usually to wash the sewage and kitchen produce the waste water and carry on the normal water treatment in the bathroom, and does not process the reuse to the waste water that the toilet bowl discharges. The waste water discharged by the toilet bowl is usually directly discharged, the environment is easily polluted, and nutrients contained in the excrement cannot be fully recycled.

SUMMERY OF THE UTILITY MODEL

In order to compensate the not enough of prior art, the utility model provides a reuse of reclaimed water device of waste water can carry out the reclaimed water to the waste water of the toilet bowl emission of district bathroom to can carry out recycle to excrement and urine, make the nourishment that contains in the excrement and urine obtain abundant recycle, and reduce the pollution that directly discharges and cause the environment, in order to solve the problem that exists among the prior art.

The utility model discloses a realize through following technical scheme:

a reclaimed water recycling device for waste water comprises a sedimentation tank, a moving bed biofilm reactor and a disinfection tank which are sequentially arranged from front to back;

the front part of the sedimentation tank is connected with a first water inlet pipe; a plurality of support columns are arranged at the bottom of the sedimentation tank; the lower part of the sedimentation tank is provided with an inverted cone-shaped collecting hopper, and the sedimentation tank is connected with the collecting hopper through a plastic threaded pipe; a vibrating plate is arranged at the lower part of the sedimentation tank, a vibrating hole is formed in the vibrating plate, and the vibrating plate is sleeved on the collecting hopper through the vibrating hole; the upper part of the vibrating plate is provided with a plurality of vibrating motors; supporting plates are arranged on the supporting columns, compression springs are arranged on the upper portions of the supporting plates, and the compression springs are connected with the vibrating plate; the lower part of the collecting hopper is connected with a valve; the rear part of the sedimentation tank is connected with a first water outlet pipe, and the sedimentation tank is communicated with the moving bed biofilm reactor through the first water outlet pipe;

an air pump and a water pump are respectively arranged at the upper part of the moving bed biofilm reactor; suspended fillers are distributed in the moving bed biofilm reactor; a membrane treatment device is arranged in the middle of the moving bed biofilm reactor; a main aeration pipe is arranged on the bottom wall of the inner side of the moving bed biofilm reactor, a gas transmission pipe is connected to the main aeration pipe, and the gas pump is connected with the main aeration pipe through the gas transmission pipe; the main aeration pipe is connected with a plurality of branch aeration pipes which are arranged in the horizontal direction, and the branch aeration pipes are connected with a plurality of exhaust pipes which are arranged in the vertical direction; a second water inlet pipe is connected to the membrane module of the membrane treatment device, and the water inlet end of the water pump is communicated with the membrane module of the membrane treatment device through the second water inlet pipe; and the water outlet end of the water pump is connected with a second water outlet pipe, and the water outlet end of the water pump is connected with the disinfection tank through the second water outlet pipe.

Preferably, the first water outlet pipe is positioned on the side wall of the lower part of the sedimentation tank.

Further optimally, the exhaust pipes are uniformly distributed along the axial direction of the branch aeration pipes.

Preferably, the upper parts of the exhaust pipes are connected with cylindrical aeration discs, and the side walls of the aeration discs are provided with a plurality of exhaust holes; a fixed block is arranged inside the exhaust pipe, a plurality of support rods are arranged on the side wall of the fixed block, and the support rods are connected with the inner wall of the exhaust pipe; the upper part of the fixed block is connected with a telescopic rod, the upper part of the telescopic rod is connected with a cover plate, the cover plate is positioned in the aeration disc, and the area of the cover plate is larger than that of the pipe orifice of the exhaust pipe; the telescopic link is sleeved with an extension spring, the upper end of the extension spring is connected with the cover plate, and the lower end of the extension spring is connected with the fixing block.

Further optimally, the exhaust holes are uniformly distributed on the side wall of the aeration disc along the circumferential direction.

Preferably, the cover plate is in an inverted cone shape.

Further optimally, the surface of the cover plate is provided with a rubber layer.

Preferably, the cross section of the disinfection tank is circular, a stirring motor is arranged outside the disinfection tank, a stirring shaft arranged in the disinfection tank in the horizontal direction is arranged inside the disinfection tank, and a plurality of stirring blades uniformly distributed along the circumferential direction are arranged on the side wall of the stirring shaft; the output shaft of the stirring motor extends to the inside of the disinfection tank and is connected with the stirring shaft.

The utility model has the advantages that:

(1) can carry out the normal water treatment to the waste water of the toilet bowl emission of district bathroom to can carry out recycle to excrement and urine, make the nourishment that contains in the excrement and urine obtain abundant recycle, and reduce the pollution that direct emission caused the environment.

(2) Through set up telescopic link and apron in the blast pipe to through extension spring's reset action, make the apron seal up the mouth of pipe of blast pipe, when aeration equipment was in unoperated state, avoid waste water to flow backwards and go into main aeration pipe and branch aeration pipe, avoid the pipe blockage, improve aeration equipment's reliability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective structure diagram of the settling tank of the present invention.

Fig. 3 is a schematic perspective view of the middle vibrating plate according to the present invention.

FIG. 4 is a schematic perspective structure diagram of the middle moving bed biofilm reactor of the present invention.

Fig. 5 is a schematic perspective view of the main aerator pipe and the branch aerator pipes of the present invention.

Fig. 6 is an enlarged schematic view of a portion a in fig. 5.

Fig. 7 is a perspective structure diagram of the middle exhaust pipe and the aeration disc of the present invention.

Fig. 8 is a perspective structure diagram of the disinfection tank of the present invention.

Fig. 9 is a schematic view of the three-dimensional structure of the disinfection tank of the present invention.

Fig. 10 is a schematic perspective view of the stirring shaft and the stirring blades of the present invention.

In the figure, 1, a sedimentation tank; 11. a first water inlet pipe; 12. a support pillar; 13. a collection hopper; 131. a valve; 14. a plastic threaded pipe; 15. a vibrating plate; 16. vibrating the hole; 17. a vibration motor; 18. a support plate; 19. a compression spring;

2. moving bed biofilm reactors; 21. a first water outlet pipe; 22. an air pump; 23. a water pump; 24. suspending the filler; 25. a membrane treatment device; 26. a gas delivery pipe; 27. a second water inlet pipe; 28. a second water outlet pipe;

3. a disinfection tank; 31. a stirring motor; 32. a stirring shaft; 33. a stirring blade;

4. a main aeration pipe; 41. a branch aeration pipe; 42. an exhaust pipe; 43. an aeration disc; 44. an exhaust hole; 45. a fixed block; 46. a support bar; 47. a telescopic rod; 48. a cover plate; 49. a tension spring.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in fig. 1-10, this embodiment discloses a waste water recycling device, which comprises a sedimentation tank 1, a moving bed biofilm reactor 2 and a disinfection tank 3 (shown in fig. 1) arranged in sequence from front to back.

A first water inlet pipe 11 (shown in fig. 2) is connected to the front of the sedimentation tank 1 for inputting waste water discharged from a toilet bowl of a community toilet into the sedimentation tank 1. The bottom of the sedimentation tank 1 is provided with a plurality of support columns 12, so that the sedimentation tank 1 and the ground for installation and placement keep a certain horizontal height. The lower part of the sedimentation tank 1 is provided with the inverted cone-shaped collecting hopper 13, so that the sedimentation of solid matters such as excrement in the domestic wastewater is facilitated, and the excrement is conveniently discharged outwards under the action of gravity along the inclined inner wall of the collecting hopper 13. The sedimentation tank 1 is connected with a material collecting hopper 13 through a plastic threaded pipe 14, so that a certain relative motion can be generated between the material collecting hopper 13 and the sedimentation tank 1. A vibrating plate 15 is arranged at the lower part of the sedimentation tank 1, a vibrating hole 16 (shown in fig. 3) is arranged on the vibrating plate 15, and the vibrating plate 15 is sleeved on the collecting hopper 13 through the vibrating hole 16; the vibration motor 17 is provided above the vibration plate 15, and transmits a vibration force to the hopper 13 through the vibration plate 15 by a vibration action, so that accumulation of the soil at the bottom of the hopper 13 can be reduced and clogging can be prevented when the soil is discharged. The supporting columns 12 are all provided with supporting plates 18, the upper portions of the supporting plates 18 are all provided with compression springs 19, the compression springs 19 are all connected with the vibrating plate 15, the vibrating plate 15 is supported through the compression springs 19, and meanwhile the elastic deformation of the compression springs 19 is utilized to achieve the damping effect. A valve 131 is connected to a lower portion of the collecting hopper 13. Solid matters such as precipitated excrement and urine are nontoxic and harmless and contain necessary nutrient substances for plant growth, the excrement and urine precipitated in the sedimentation tank 1 is collected for a period of time and then discharged through the valve 131, the discharged excrement and urine can be used for fertilization of plant planting in a community, the ecological environment is protected, and the pollution to the environment caused by direct discharge of waste water is reduced. The rear part of the sedimentation tank 1 is connected with a first water outlet pipe 21, and the sedimentation tank 1 is communicated with the moving bed biofilm reactor 2 through the first water outlet pipe 21 and is used for inputting the supernatant in the sedimentation tank 1 into the moving bed biofilm reactor 2 for reclaimed water treatment.

The moving bed biofilm reactor is an improved novel composite biofilm reactor developed on the basis of a fixed bed reactor, a fluidized bed reactor and a biofilter. The method overcomes the defects that a fixed bed reactor needs regular back flushing, a fluidized bed reactor needs carrier fluidization, and a submerged biological filter is blocked and needs to be cleaned and an aerator needs to be replaced, and also keeps the characteristics of impact load resistance, low sludge yield and long sludge age of the traditional biofilm method. Compared with the activated sludge method, the method has longer sludge age, can keep more nitrifying bacteria and has better denitrification effect. The main principle is that after sewage continuously flows through a reactor filler carrier, a biological film is formed on the carrier, and microorganisms propagate and grow on the biological film in a large quantity and degrade organic pollutants in the sewage, so that the sewage is purified.

An air pump 22 and a water pump 23 are respectively arranged at the upper part of the moving bed biofilm reactor 2 (as shown in figure 4). Suspended fillers 24 are distributed in the moving bed biofilm reactor 2; and a membrane treatment device 25 is arranged in the middle of the moving bed biofilm reactor 2. The biomass in the moving bed biofilm reactor 2 exists in an attached state and a suspended state, so that the microorganisms are abundant, the solid retention time of the attached biofilm is long, the growth of nitrobacteria is facilitated, an anaerobic and aerobic microenvironment is formed, conditions are provided for a synchronous nitrification and denitrification process, and a good denitrification effect is achieved.

A main aeration pipe 4 is arranged on the bottom wall of the inner side of the moving bed biofilm reactor 2, a gas pipe 26 (shown in fig. 4) is connected to the main aeration pipe 4, the gas pump 22 is connected with the main aeration pipe 4 through the gas pipe 26, and gas required by aeration is input through the gas pump 22. A plurality of branch aeration pipes 41 arranged in the horizontal direction are connected to the main aeration pipe 4, a plurality of exhaust pipes 42 (as shown in fig. 5) arranged in the vertical direction are connected to the branch aeration pipes 41, and the gas input by the gas pump 22 passes through the main aeration pipe 4 and the branch aeration pipes 41 in sequence and is discharged into the moving bed biofilm reactor 2 in the form of bubbles through the exhaust pipes 42. The air bubbles discharged from the exhaust pipe 42 make the suspended filler 24 have a better fluidization state, so that the occurrence of the phenomenon of piling of the suspended filler 24 can be effectively prevented, and the mass transfer effect of oxygen in the moving bed biofilm reactor 2 is better and the gas distribution is uniform. In addition, the air bubbles generated by aeration can generate certain flushing effect on the membrane surface of the membrane treatment device 25, thus delaying the occurrence of membrane pollution and being beneficial to the normal operation of the membrane component.

A second water inlet pipe 27 (shown in fig. 4) is connected to the membrane module of the membrane treatment device 25, and the water inlet end of the water pump 23 is communicated with the membrane module of the membrane treatment device 25 through the second water inlet pipe 27; the water outlet end of the water pump 23 is connected with a second water outlet pipe 28, and the water outlet end of the water pump 23 is connected with the disinfection tank 3 through the second water outlet pipe 28. The membrane module of the membrane treatment device 25 has a blocking effect on the suspended filler 24, and can effectively prevent the loss phenomenon. Under the suction action of the water pump 23, the reclaimed water treated by the moving bed biofilm reactor 2 flows into the disinfection tank 3 through the second water inlet pipe 27, the water pump 23 and the second water outlet pipe 28 in sequence, is mixed with the disinfection solution and is disinfected, and can be used as reclaimed water in a community after disinfection.

The utility model discloses a theory of operation is: waste water discharged by a community toilet bowl enters the sedimentation tank 1 through the first water inlet pipe 11, and solid matters such as excrement and urine are precipitated at the bottom of the collecting hopper 13, so that the waste water is conveniently collected and discharged; supernatant in the sedimentation tank 1 enters a moving bed biofilm reactor 2 through a first water outlet pipe 21, gas is input through a gas pump 22, and bubbles are discharged through a gas outlet pipe 42, so that the suspended filler 24 is fully fluidized, and the supernatant is subjected to biological treatment; the supernatant after biological treatment is subjected to solid-liquid separation by a membrane treatment device 25 and a membrane component thereof, is pumped out by a water pump 23, and the formed reclaimed water enters a disinfection tank 3 for disinfection and is used for reclaimed water in a community after disinfection.

The utility model discloses can regard as toilet bowl to discharge waste water's processing apparatus alone, also can install filtering grid additional on the upper portion of sedimentation tank, carry out the prefiltering back to the impurity in other domestic sewage that the district discharged, further carry out the normal water treatment through sedimentation tank and removal bed biofilm reactor.

In a preferred embodiment, the first outlet pipe 21 is located on the side wall of the lower part of the sedimentation tank 1 (as shown in fig. 2) to facilitate the supernatant formed in the sedimentation tank 1 to flow into the moving bed biofilm reactor 2.

In a preferred embodiment, the exhaust pipes 42 are uniformly distributed along the axial direction of the branched aeration pipes 41, so that the bubbles discharged from the exhaust pipes 42 are uniformly distributed in the moving bed biofilm reactor 2, thereby improving the aeration effect.

In a preferred embodiment, a cylindrical aeration disk 43 (as shown in fig. 6) is connected to the upper portion of each exhaust pipe 42, and a plurality of exhaust holes 44 are formed in the sidewall of each aeration disk 43 to exhaust the gas in the exhaust pipe 42. A fixing block 45 (shown in fig. 7) is arranged inside the exhaust pipe 42, a plurality of support rods 46 are arranged on the side wall of the fixing block 45, and the support rods 46 are connected with the inner wall of the exhaust pipe 42 and used for fixedly mounting the fixing block 45. An expansion link 47 is connected to the upper portion of the fixed block 45, a cover plate 48 is connected to the upper portion of the expansion link 47, the cover plate 48 is located in the aeration disc 43, and the area of the cover plate 48 is larger than that of the opening of the exhaust pipe 42, so that the exhaust pipe 42 is sealed. An extension spring 49 is sleeved on the extension rod 47, the upper end of the extension spring 49 is connected with the cover plate 48, and the lower end of the extension spring 49 is connected with the fixing block 45. When aeration is needed, the cover plate 48 is jacked upwards by the gas input by the air pump 22, the extension spring 49 is stretched upwards, and the gas in the exhaust pipe 42 enters the aeration disc 43 and is exhausted through the exhaust hole 44; when the air pump 22 stops inputting air, the cover plate 48 covers the opening of the exhaust pipe 42 under the restoring action of the extension spring 49 to seal, and when the aeration device is in a non-working state, the wastewater is prevented from flowing back to enter the main aeration pipe and the branch aeration pipes, so that the pipeline is prevented from being blocked, and the reliability of the aeration device is improved.

In a preferred embodiment, the air discharge holes 44 are uniformly distributed on the sidewall of the aeration plate 43 along the circumferential direction, so that the air bubbles discharged from the air discharge holes 44 are uniformly distributed, thereby improving the air distribution effect.

In a preferred embodiment, the cover plate 48 is reverse tapered (as shown in fig. 7), so that the gas in the exhaust pipe 42 is easily discharged along the reverse tapered surface of the cover plate 48.

In a preferred embodiment, a rubber layer is provided on both surfaces of the cover plate 48, so that the sealing performance of the cover plate 48 with respect to the exhaust pipe 42 can be improved.

As a preferred embodiment, the cross-sectional shape of the disinfection tank 3 in a top view is a circular ring (as shown in fig. 9), a stirring motor 31 (as shown in fig. 8) is provided outside the disinfection tank 3, a stirring shaft 32 installed in a horizontal direction is provided inside the disinfection tank 3, and a plurality of stirring blades 33 (as shown in fig. 10) uniformly distributed along a circumferential direction are provided on a side wall of the stirring shaft 32; an output shaft of the stirring motor 31 extends to the inside of the sterilizing tank 3 and is connected with a stirring shaft 32. Drive (mixing) shaft 32 and stirring vane through agitator motor 31 and rotate for reclaimed water and antiseptic solution to in the disinfection pond 3 stir, because the section shape of overlooking of disinfection pond 3 is the ring shape, make reclaimed water and antiseptic solution can carry out the circulation flow in disinfection pond 3 through the stirring, make reclaimed water and antiseptic solution can the intensive mixing, improve sterile effect.

To sum up, the reclaimed water recycling device for the wastewater of the utility model can carry out reclaimed water treatment on the wastewater discharged by the toilet bowl in the community toilet and can recycle the excrement; and when the aeration device is in a non-working state, the wastewater is prevented from flowing back to the main aeration pipe and the branch aeration pipes, the pipeline is prevented from being blocked, and the reliability of the aeration device is improved.

The parts of the present invention not described in detail are the known techniques of those skilled in the art. Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a reuse of reclaimed water device of waste water, includes sedimentation tank (1), removal bed biofilm reactor (2) and disinfection pond (3) that set gradually after the past, its characterized in that:

the front part of the sedimentation tank (1) is connected with a first water inlet pipe (11); a plurality of support columns (12) are arranged at the bottom of the sedimentation tank (1); the lower part of the sedimentation tank (1) is provided with an inverted cone-shaped collecting hopper (13), and the sedimentation tank (1) is connected with the collecting hopper (13) through a plastic threaded pipe (14); a vibrating plate (15) is arranged at the lower part of the sedimentation tank (1), a vibrating hole (16) is formed in the vibrating plate (15), and the vibrating plate (15) is sleeved on the aggregate bin (13) through the vibrating hole (16); a plurality of vibration motors (17) are arranged on the upper part of the vibration plate (15); supporting plates (18) are arranged on the supporting columns (12), compression springs (19) are arranged on the upper portions of the supporting plates (18), and the compression springs (19) are connected with the vibrating plate (15); the lower part of the aggregate bin (13) is connected with a valve (131); the rear part of the sedimentation tank (1) is connected with a first water outlet pipe (21), and the sedimentation tank (1) is communicated with the moving bed biofilm reactor (2) through the first water outlet pipe (21);

an air pump (22) and a water pump (23) are respectively arranged at the upper part of the moving bed biofilm reactor (2); suspended fillers (24) are distributed in the moving bed biofilm reactor (2); a membrane treatment device (25) is arranged in the middle of the moving bed biofilm reactor (2); a main aeration pipe (4) is arranged on the bottom wall of the inner side of the moving bed biofilm reactor (2), a gas pipe (26) is connected to the main aeration pipe (4), and the air pump (22) is connected with the main aeration pipe (4) through the gas pipe (26); a plurality of branch aeration pipes (41) arranged in the horizontal direction are connected to the main aeration pipe (4), and a plurality of exhaust pipes (42) arranged in the vertical direction are connected to the branch aeration pipes (41); a second water inlet pipe (27) is connected to a membrane module of the membrane treatment device (25), and the water inlet end of the water pump (23) is communicated with the membrane module of the membrane treatment device (25) through the second water inlet pipe (27); the water outlet end of the water pump (23) is connected with a second water outlet pipe (28), and the water outlet end of the water pump (23) is connected with the disinfection tank (3) through the second water outlet pipe (28).

2. The reclaimed water recycling device for waste water according to claim 1, characterized in that: the first water outlet pipe (21) is positioned on the side wall of the lower part of the sedimentation tank (1).

3. The reclaimed water recycling device for waste water according to claim 1, characterized in that: the exhaust pipes (42) are uniformly distributed along the axial direction of the branch aeration pipes (41).

4. The reclaimed water recycling device for waste water according to claim 1, characterized in that: the upper parts of the exhaust pipes (42) are connected with cylindrical aeration discs (43), and the side walls of the aeration discs (43) are provided with a plurality of exhaust holes (44); a fixed block (45) is arranged inside the exhaust pipe (42), a plurality of support rods (46) are arranged on the side wall of the fixed block (45), and the support rods (46) are connected with the inner wall of the exhaust pipe (42); the upper part of the fixed block (45) is connected with an expansion link (47), the upper part of the expansion link (47) is connected with a cover plate (48), the cover plate (48) is positioned in the aeration disc (43), and the area of the cover plate (48) is larger than that of the pipe orifice of the exhaust pipe (42); an extension spring (49) is sleeved on the telescopic rod (47), the upper end of the extension spring (49) is connected with the cover plate (48), and the lower end of the extension spring is connected with the fixing block (45).

5. The reclaimed water recycling device for waste water according to claim 4, characterized in that: the exhaust holes (44) are uniformly distributed on the side wall of the aeration disc (43) along the circumferential direction.

6. The reclaimed water recycling device for waste water according to claim 4, characterized in that: the cover plate (48) is in an inverted cone shape.

7. The reclaimed water recycling device for waste water according to claim 4, characterized in that: the surface of the cover plate (48) is provided with a rubber layer.

8. The reclaimed water recycling device for waste water according to claim 1, characterized in that: the cross section of the disinfection tank (3) is circular in plan view, a stirring motor (31) is arranged outside the disinfection tank (3), a stirring shaft (32) installed in the disinfection tank (3) in the horizontal direction is arranged inside the disinfection tank, and a plurality of stirring blades (33) uniformly distributed along the circumferential direction are arranged on the side wall of the stirring shaft (32); an output shaft of the stirring motor (31) extends to the inside of the disinfection tank (3) and is connected with the stirring shaft (32).