CN217947904U

CN217947904U - SPF-level experimental animal wastewater treatment system

Info

Publication number: CN217947904U
Application number: CN202221827998.9U
Authority: CN
Inventors: 秦雅婷; 林松
Original assignee: Suzhou Ruijia Purifying Equipment Co ltd
Current assignee: Suzhou Ruijia Purifying Equipment Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-02
Anticipated expiration: 2032-07-15

Abstract

The utility model relates to a SPF level experimental animals effluent disposal system, including the grid well, the inside of grid well is equipped with the hoist mechanism of being convenient for clear up granule debris, the left side intercommunication of grid well has the sewer line. This SPF level experimental animals effluent disposal system, let in the inside of sedimentation tank with sewage, the sedimentation tank carries out solid-liquid separation and gets rid of the biomembrane and the suspension mud that peel off in the biochemical pond, make sewage really purify, design the sedimentation tank into the vertical flow sedimentation tank, its sludge degradation is effectual, no mechanical power, adopt triangle weir to go out water, it is stable to make out water effect, utilize first filter and second filter with the residual chlorine in aquatic, the impurity of organic matter and suspended solid, let sewage obtain further purification, ensure to reach emission standard, utilize the starter motor, make the baffle, supporting shoe and roof drive three riser and fixed plate rebound, rise granule debris, reached the purpose of being convenient for clear up granule debris.

Description

SPF-level experimental animal wastewater treatment system

Technical Field

The utility model relates to a waste water treatment technical field specifically is a SPF level experimental animals effluent disposal system.

Background

The SPF experimental animal facility is provided with relatively independent sewage primary treatment equipment or a septic tank, and sewage such as excrement from animals, washing water for cage devices, waste disinfectant or waste test solution in experiments and the like is treated and discharged after meeting the requirements of national discharge standards.

The wastewater production amount of the small-water-amount laboratory is breeding wastewater of large-scale animals such as dogs, monkeys and guinea pigs, excrement and cleaning wastewater of the animals are treated, the wastewater is generally mixed by liquid medicine and poured into the reaction tank, catalytic reaction is carried out and precipitation is carried out, the purpose of purifying the experimental wastewater is achieved, however, harmful substances are not effectively purified in the wastewater, certain influence on the environment is probably caused if the harmful substances are directly discharged, and therefore the SPF-level experimental animal wastewater treatment system is provided and utilizes a plurality of systems to effectively treat the SPF-level experimental animal wastewater.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a SPF level experimental animals effluent disposal system possesses the advantage of high-efficient processing SPF level experimental animals waste water, has solved and can have harmful substance and not effective purification, and direct emission probably causes the problem of certain influence to the environment.

In order to achieve the above object, the utility model provides a following technical scheme: an SPF-level experimental animal wastewater treatment system comprises a grid well, wherein a lifting mechanism convenient for cleaning particle impurities is arranged in the grid well, the left side of the grid well is communicated with a sewage pipeline, the right side of the grid well is communicated with an adjusting tank, a submersible sewage pump is fixed on the bottom wall of an inner cavity of the adjusting tank, the output end of the submersible sewage pump is communicated with a water inlet pipe, the right side of the adjusting tank is communicated with a well, a valve well is fixed on the upper surface of the well through bolts, a base layer is fixed on the right side of the grid well, a biochemical tank is arranged on the upper surface of the base layer, an anaerobic tank is fixed in the biochemical tank, a first aerobic tank is communicated with the right side of the anaerobic tank, a second aerobic tank is communicated with the right side of the first aerobic tank, a sedimentation tank is communicated with the right side of the second aerobic tank, a disinfection tank is fixed on the back side of the sedimentation tank, a sludge reflux pump is fixed on the bottom wall of the inner cavity of the biochemical tank, and the output end of the sludge reflux pump is communicated with a reflux tube;

the lifting mechanism comprises a fixing plate movably attached to the bottom wall of an inner cavity of the grid well, three vertical plates movably attached to two side walls of the front back of the inner cavity of the grid well and the right side wall of the inner cavity of the grid well are vertically fixed to the upper surface of the fixing plate, a top plate is fixed to the upper surface of the top plate, a supporting block is fixed to the top end of the supporting block, two movable sleeves and a screw rod are vertically fixed to the upper surface of the baffle, a supporting plate is vertically fixed to the upper surface of the grid well and the right end portion close to the grid well, a connecting plate is vertically fixed to the left side of the supporting plate and the top portion close to the supporting plate, a motor is fixed to the lower surface of the connecting plate, a connecting rod is fixed to the outer side of the motor output shaft, two belts are connected to the outer side of the connecting rod in a transmission mode, and a rotating rod is fixed to the top end of the screw rod.

Further, the basic unit is the tamped soil layer, the upper surface on tamped soil layer is equipped with 200mm concrete foundation, biochemical pond is arranged in on the 200mm concrete foundation, grid well, equalizing basin and well are all seted up on the basic unit and are located the left side in biochemical pond.

Furthermore, a filter screen is fixed inside the vertical plate on the right side, and a discharge port is formed in the right side of the grating well.

Furthermore, a support is fixed on the right side wall of the inner cavity of the adjusting tank, and the water inlet pipe is fixed in the support.

Furthermore, one end of the water inlet pipe, which is far away from the submersible sewage pump, penetrates through the left side of the well, extends to the right side of the well and is communicated with the left side of the biochemical pool.

Furthermore, two the screw rod all rotates through the bearing and connects the lower surface at the connecting plate, the output shaft of motor rotates through the bearing and connects the lower surface at the connecting plate.

Further, the left side screw transmission is connected in the lower side belt, and the right side screw transmission is connected in the upper side belt.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this SPF level experimental animals effluent disposal system utilizes the fixed filter screen on the right side riser to carry out the separation with the granule debris in the SPF level experimental animals waste water, reaches the purpose of filtering the granule debris in the SPF level experimental animals waste water, and under anaerobic condition, rivers and filler fully flow under the effect of agitator, reach the biomembrane and the pollutant of handling fully contact and the purpose of biological decomposition.

2. This SPF level experimental animals effluent disposal system, let in the inside of sedimentation tank with sewage, the sedimentation tank carries out solid-liquid separation and gets rid of the biomembrane and the suspended sludge that peel off in the biochemical pond, make sewage really purify, design the sedimentation tank into the vertical-flow sedimentation tank, its sludge degradation is effectual, no mechanical power, adopt triangle weir to go out water, it is stable to make out the water effect, utilize the residual chlorine of first filter and second filter with aquatic, the impurity of organic matter and suspended solid, let sewage obtain further purification, ensure to reach emission standard, utilize the starter motor, make baffle, supporting shoe and roof drive three riser and fixed plate rebound, rise granule debris, the mesh of being convenient for clear up granule debris has been reached.

Drawings

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

FIG. 2 is a top view of the present invention;

fig. 3 is a schematic view of the lifting mechanism of the present invention.

In the figure: 1 grid well, 2 lifting mechanisms, 201 fixing plates, 202 vertical plates, 203 top plates, 204 supporting blocks, 205 baffle plates, 206 supporting plates, 207 connecting plates, 208 motors, 209 connecting rods, 210 belts, 211 movable sleeves, 212 screw rods, 213 rotating rods, 3 sewage pipelines, 4 adjusting tanks, 5 submersible sewage pumps, 6 supports, 7 wellways, 8 valve wells, 9 water inlet pipes, 10 basic layers, 11 biochemical tanks, 12 anaerobic tanks, 13 first aerobic tanks, 14 second aerobic tanks, 15 return pipes, 16 sludge return pumps, 17 disinfection tanks and 18 sedimentation tanks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-2, the system for treating SPF-level experimental animal wastewater in this embodiment includes a grid well 1, a lifting mechanism 2 for cleaning particulate impurities is disposed inside the grid well 1, a sewage conduit 3 is connected to the left side of the grid well 1, when SPF-level experimental animal wastewater needs to be treated, the SPF-level experimental animal wastewater is discharged into the grid well 1 through the sewage conduit 3, an adjusting tank 4 is connected to the right side of the grid well 1, the adjusting tank 4 mainly collects treated water, homogenizes the treated water to provide a stable water source for subsequent treatment facilities, a liquid level controller and a liquid level controller are disposed in the adjusting tank 4, a signal is transmitted through the liquid level controller, the SPF-level experimental animal wastewater is sent to the biochemical tank 11 by a submersible sewage pump 5, a sewage pump 5 is fixed to the bottom wall of the inner cavity of the adjusting tank 4, an output end of the sewage pump 5 is connected to a water inlet pipe 9, and a well 7 is connected to the right side of the adjusting tank 4, the upper surface of a well 7 is fixed with a valve well 8 through bolts, the right side of a grille well 1 is fixed with a base layer 10, the upper surface of the base layer 10 is provided with a biochemical tank 11, the inside of the biochemical tank 11 is fixed with an anaerobic tank 12, when the SPF-level experimental animal wastewater enters the inside of the anaerobic tank 12, under the anaerobic condition, the water flow and the filler of the SPF-level experimental animal wastewater fully flow under the action of a stirrer, so as to achieve the purpose that a biological film is fully contacted with the treated pollutant to be biologically decomposed, the stirrer consists of a motor and a stirring rod fixed on the outer side of an output shaft of the motor, the stirring rod is positioned inside the anaerobic tank 12, the motor is fixed on the top wall of an inner cavity of the biochemical tank 11, the right side of the anaerobic tank 12 is communicated with a first aerobic tank 13, the right side of the first aerobic tank 13 is communicated with a second aerobic tank 14, the SPF-level experimental animal wastewater is introduced into the two aerobic tanks, under higher organic load, through the biochemical degradation and adsorption action of a large number of microbial communities of different species attached to the filler, various organic substances in the sewage are removed, so that the content of organic matters in the sewage is greatly reduced, under the condition of lower organic load at the later stage, the ammonia nitrogen in the sewage is degraded under the condition of sufficient oxygen amount through the action of nitrobacteria, and simultaneously, the COD value in the sewage is reduced to a lower level, so that the sewage is purified, the right side of the second aerobic tank 14 is communicated with a sedimentation tank 18, the sewage is introduced into the sedimentation tank 18, the sedimentation tank 18 is subjected to solid-liquid separation to remove a biofilm and suspended sludge stripped from the biochemical tank 11, so that the sewage is really purified, the sedimentation tank 18 is designed into a vertical flow type sedimentation tank 18, the sludge degradation effect is good, no mechanical power is adopted, water is discharged by adopting a triangular weir, so that the water outlet effect is stable, the triangular weir is a traditional metering method which is simple, accurate and reliable, is generally suitable for various metering environments, has good metering effect even if high SS (suspended solids) and high-viscosity fluid, cannot influence the metering accuracy due to metering section blockage caused by sewage, a disinfection tank 17 is fixed on the back side of a sedimentation tank 18, a chlorine dioxide adding device and a chlorine dioxide adding device are arranged in the disinfection tank 17 and used as a wastewater sterilization and disinfection device, has strong killing effect on a series of microbial bacteria such as escherichia coli in domestic sewage, and uses a composite disinfectant taking chlorine dioxide as a main disinfectant and chlorine as an auxiliary disinfectant to sterilize and purify the wastewater in the disinfection tank 17 so as to reach the three-level standard in the integrated wastewater discharge standard GB8978-1996, the bottom wall of the inner cavity of the biochemical pool 11 is fixed with a sludge reflux pump 16, the sludge part discharges sludge to the sludge pool at regular time, and is provided with the sludge reflux pump 16, part of the sludge refluxes to the inside of the anaerobic pool 12 for nitrification and denitrification, the generation of the sludge is also reduced, and the removal of ammonia nitrogen in the sewage is also facilitated, the output end of the sludge reflux pump 16 is communicated with a reflux pipe 15, the bottom wall of the inner cavity of the biochemical pool 11 and the right side of the second aerobic pool 14 are fixed with a filter water pump, a first filter and a second filter, the sewage is introduced into the first filter through the filter water pump, the first filter is a quartz sand filter, the quartz sand filter is a pressure type filter, a refined quartz sand filter material filled in the first filter is utilized, when the inflow water flows through a filter layer from top to bottom, suspended matters and viscose particles in the water are removed, so that the turbidity of the water is reduced, the sewage is continuously introduced into the inside of the second filter, the second filter is an activated carbon filter, the activated carbon filter is further utilized to remove residual chlorine organic matters, impurities of the suspended matters and impurities in the outflow water of the mechanical filter, further purify the sewage, and the sewage is ensured to be discharged to the standard 17.

Basic unit 10 is the tamped soil layer, the upper surface on tamped soil layer is equipped with 200mm concrete foundation, biochemical pond 11 is arranged in on the 200mm concrete foundation, grille well 1, equalizing basin 4 and well 7 are all seted up on basic unit 10 and are located biochemical pond 11's left side, the inside of right side riser 202 is fixed with the filter screen, utilize the filter screen of fixing on the right side riser 202 to carry out the separation with the granule debris in the SPF level experimental animals waste water, SPF level experimental animals waste water after the filtration gets into equalizing basin 4's inside, the discharge port has been seted up on grille well 1's right side, the right side wall of equalizing basin 4 inner chamber is fixed with support 6, inlet tube 9 is fixed in support 6's inside, the one end that submersible sewage pump 5 was kept away from to inlet tube 9 runs through the left side of well 7 respectively and extends to well 7's right side and communicates with biochemical pond 11's left side.

Referring to fig. 3, in order to facilitate cleaning of particulate impurities, the lifting mechanism 2 in this embodiment includes a fixing plate 201 movably attached to a bottom wall of an inner cavity of the grid well 1, three vertical plates 202 movably attached to two front and back side walls and a right side wall of the inner cavity of the grid well 1 are vertically fixed to an upper surface of the fixing plate 201, a filter port is formed in a right side of the right vertical plate 202, a filter screen is fixed inside the filter port, a top plate 203 is fixed to an upper surface of the three vertical plates 202, a support block 204 is vertically fixed to an upper surface of the top plate 203, a baffle 205 is fixed to a top end of the support block 204, two movable sleeves 211 are vertically fixed to an upper surface of the baffle 205, screws 212 are threadedly connected to interiors of the two movable sleeves 211, a support plate 206 is vertically fixed to an upper surface of the grid well 1 near a right end of the grid well 1, a connecting plate 207 is vertically fixed to a left side of the support plate 206 near a top end of the support plate 206, a motor 208 is fixed to a lower surface of the connecting plate 207, when particulate impurities in the grid well 1 need to be treated, the particulate impurities, the motor 208 is started, an output shaft 209 of the motor 208 drives the connecting rod to rotate, the connecting rod 209, the connecting rod 210 starts to drive the two output shafts 213 of the connecting rod 209, two output shafts 213 of the connecting rod 213, and two output shafts of the two rotating rods 213 are respectively.

In this embodiment, two screws 212 are all connected to the lower surface of connecting plate 207 through the bearing rotation, the output shaft of motor 208 is connected to the lower surface of connecting plate 207 through the bearing rotation, because two movable sleeves 211 are all fixed at the upper surface of baffle 205, carry on spacingly with two movable sleeves 211, make two movable sleeves 211 can only drive baffle 205 rebound from top to bottom horizontally, baffle 205, supporting shoe 204 and roof 203 drive three riser 202 and fixed plate 201 rebound, rise granule debris, make the clearance of granule debris convenient, left side screw 212 transmission is connected in the inside of lower side belt 210, right side screw 212 transmission is connected in the inside of upper side belt 210, the utility model discloses a control mode is controlled through the controller, and the control circuit of controller can be realized through the simple programming of technical staff in this field, and the providing of power also belongs to the well-known general knowledge in this field, and the utility model discloses mainly use protection mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It should be noted that, sewage is introduced into the interior of the sedimentation tank 18, the sedimentation tank 18 is used for carrying out solid-liquid separation to remove biofilm and suspended sludge peeled off from the biochemical tank 11, so that the sewage is really purified, the sedimentation tank 18 is designed into a vertical flow type sedimentation tank 18, the sludge degradation effect is good, no mechanical power is generated, a triangular weir is used for discharging water, so that the water discharging effect is stable, the first filter and the second filter are used for further purifying residual chlorine, organic matters and suspended matters in the water, so as to ensure that the sewage reaches the discharge standard, the motor 208 is started, the baffle plate 205, the supporting block 204 and the top plate 203 are used for driving the three vertical plates 202 and the fixing plate 201 to move upwards to raise the particle impurities, so that the purpose of conveniently cleaning the particle impurities is achieved, and the treatment process forms a set of treatment system for SPF-grade experimental animal wastewater.

The working principle of the above embodiment is as follows:

(1) When the SPF experimental animal wastewater needs to be treated, the SPF experimental animal wastewater is discharged into the interior of the grid well 1 through the sewage pipeline 3, particle impurities in the SPF experimental animal wastewater are blocked by the filter screen fixed on the right vertical plate 202, the filtered SPF experimental animal wastewater enters the interior of the adjusting tank 4, the adjusting tank 4 mainly collects treated water, flow equalization and homogenization are provided for subsequent treatment facilities, a liquid level controller and a liquid level controller are arranged in the adjusting tank 4, signals are transmitted through the liquid level controller, the SPF experimental animal wastewater is conveyed to the interior of the biochemical tank 11 by the submersible sewage pump 5, when the SPF experimental animal wastewater enters the interior of the anaerobic tank 12, the SPF experimental animal wastewater fully flows under the anaerobic condition under the action of the stirrer, the purpose of full contact and biological decomposition of a biological membrane and treated pollutants is achieved, the SPF experimental animal wastewater is then introduced into the interiors of the two biochemical tanks, under the high organic load, a large amount of different species attached to the filler is fully contacted with the biological membrane and the treated pollutants is reduced, and the sewage is degraded under the aerobic load, and the sewage degradation of the organic pollutants is greatly reduced, and the sewage is purified under the aerobic load.

(2) Then the sewage is led into the interior of the sedimentation tank 18, the sedimentation tank 18 carries out solid-liquid separation to remove biomembrane and suspended sludge peeled off from the biochemical tank 11, so that the sewage is really purified, the sedimentation tank 18 is designed into a vertical flow type sedimentation tank 18, the sludge degradation effect is good, no mechanical power is provided, water is discharged by adopting a triangular weir, in the water treatment process, the flow measurement and calculation of the sewage are often required, the triangular weir measurement is a traditional measurement method with simple equipment, accuracy and reliability, the triangular weir measurement equipment is generally suitable for various measurement environments, even if the SS is high, high-viscosity fluid can have good measurement effect, the measurement accuracy cannot be influenced due to the measurement section blockage of the sewage, the water discharge effect is stable, the sludge part is regularly discharged to the sludge tank, a sludge return pump 16 is arranged, part of sludge flows back to the inside of the anaerobic tank 12 for nitrification and denitrification, the generation of sludge is reduced, and the removal of ammonia nitrogen in sewage is facilitated, and part of sludge flows back to the inside of the anaerobic tank 12 for nitrification and denitrification, the generation of sludge is reduced, and the removal of ammonia nitrogen in sewage is facilitated, wherein the sewage is introduced into the inside of a first filter through a filter water pump, the first filter is a quartz sand filter, the quartz sand filter is a pressure filter, and when inlet water flows through a filter layer from top to bottom, suspended matters and viscose particles in the water are removed, so that the turbidity of the water is reduced, the sewage is continuously introduced into the inside of a second filter, the second filter is an activated carbon filter, and the activated carbon filter further removes residual chlorine residue in outlet water of a mechanical filter by using granular activated carbon, organic matter and suspended matter impurities enable sewage to be further purified, the sewage is guaranteed to reach a discharge standard, the sewage is continuously discharged into a disinfection tank 17, a chlorine dioxide adder is used as a disinfection and disinfection device for wastewater, a strong killing effect is achieved for a series of microbial bacteria such as escherichia coli in domestic sewage, a composite disinfectant taking chlorine dioxide as a main disinfectant and chlorine as an auxiliary disinfectant is used for disinfecting and purifying the wastewater in the disinfection tank 17, the three-level standard in the comprehensive sewage discharge standard GB8978-1996 is achieved, when particle impurities in a grid well 1 need to be treated, a motor 208 is started, an output shaft of the motor 208 drives two belts 210 to start transmission, rotating rods 213 on the left side and the right side respectively drive two screw rods 212 to start rotating, the two movable sleeves 211 are fixed on the upper surface of a baffle 205 and are limited, the two movable sleeves 211 can only horizontally drive the baffle 205 to move upwards, the baffle 205, a supporting block 204 and a top plate 203 drive three vertical plates 202 and a fixed plate 201 to move upwards, the particle impurities are lifted, and the particle impurities are convenient to be cleaned.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a SPF level experimental animals effluent disposal system, includes grid well (1), its characterized in that: the improved sewage treatment device is characterized in that a lifting mechanism (2) convenient for cleaning particle impurities is arranged in the grille well (1), a sewage pipeline (3) is communicated with the left side of the grille well (1), an adjusting tank (4) is communicated with the right side of the grille well (1), a submersible sewage pump (5) is fixed on the bottom wall of the inner cavity of the adjusting tank (4), an inlet pipe (9) is communicated with the output end of the submersible sewage pump (5), a well (7) is communicated with the right side of the adjusting tank (4), a valve well (8) is fixed on the upper surface of the well (7) through a bolt, a base layer (10) is fixed on the right side of the grille well (1), a biochemical pond (11) is arranged on the upper surface of the base layer (10), an anaerobic pond (12) is fixed in the biochemical pond (11), a first aerobic pond (13) is communicated with the right side of the anaerobic pond (12), a second aerobic pond (14) is communicated with the right side of the second aerobic pond (14), a sedimentation pond (18) is fixed on the back side of the sedimentation pond (18), a disinfection pond (17) is fixed on the back side of the aerobic pond, a sludge reflux pump (16) is fixed in the bottom wall of the biochemical pond (11), and a sludge reflux pump (16) is fixed in the biochemical reflux pond (16);

lifting mechanism (2) are including activity laminating fixed plate (201) at grid well (1) inner chamber diapire, the upper surface vertical fixation of fixed plate (201) has three riser (202) with the positive back of the body both sides wall of grid well (1) inner chamber and the activity laminating of right side wall, and is three the upper surface fixed of riser (202) has roof (203), the upper surface vertical fixation of roof (203) has supporting shoe (204), the top of supporting shoe (204) is fixed with baffle (205), the upper surface vertical fixation of baffle (205) has two movable sleeves (211), two the equal threaded connection in inside of movable sleeve (211) has screw rod (212), the upper surface of grid well (1) just is close to the right-hand member department vertical fixation of grid well (1) has backup pad (206), the left side of backup pad (206) just is close to the top department vertical fixation of backup pad (206) has connecting plate (207), the lower fixed surface of connecting plate (207) has motor (208), the outside of motor (208) output shaft is fixed with connecting rod (209), the outside of connecting rod (209) is connected with two transmission screw rods (210), two equal bull sticks (213).

2. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: basic unit (10) are the tamped soil layer, the upper surface on tamped soil layer is equipped with 200mm concrete foundation, biochemical pond (11) are arranged in on the 200mm concrete foundation, grid well (1), equalizing basin (4) and well (7) are all seted up on basic unit (10) and are located the left side of biochemical pond (11).

3. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: a filter screen is fixed in the vertical plate (202) on the right side, and a discharge port is formed in the right side of the grille well (1).

4. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: the right side wall of the inner cavity of the adjusting tank (4) is fixed with a support (6), and the water inlet pipe (9) is fixed in the support (6).

5. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: one end of the water inlet pipe (9) far away from the submersible sewage pump (5) penetrates through the left side of the well (7) respectively, extends to the right side of the well (7) and is communicated with the left side of the biochemical pool (11).

6. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: the two screw rods (212) are rotatably connected to the lower surface of the connecting plate (207) through bearings, and the output shaft of the motor (208) is rotatably connected to the lower surface of the connecting plate (207) through bearings.

7. An SPF-class laboratory animal wastewater treatment system according to claim 1, characterized in that: the left screw (212) is in transmission connection with the inside of the lower belt (210), and the right screw (212) is in transmission connection with the inside of the upper belt (210).