CN111875157A

CN111875157A - Microbial sewage purifier for environmental protection

Info

Publication number: CN111875157A
Application number: CN202010627563.9A
Authority: CN
Inventors: 陈好学
Original assignee: Shaanxi Noisy Xinxin Intellectual Property Service Co ltd
Current assignee: Shaanxi Noisy Xinxin Intellectual Property Service Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-11-03

Abstract

The invention provides a microbial sewage purification device for environmental protection, which comprises a base; the aeration tank is fixedly connected with the top of the base, a first gear is fixedly connected with the left side of the inner wall of the aeration tank, a rotating shaft is connected to the inside of the first gear in a rotating mode, a connecting rod is fixedly connected with the right end of the rotating shaft, and stirring rods are connected to the two ends of the connecting rod in a rotating mode. The rotating shaft is driven by the motor to rotate, the connecting rod is driven by the rotating shaft to do circular motion, the connecting rod drives the two second gears to do circular motion on the tooth surface of the first gear, so that the two stirring rods do circular motion and also do self-rotation motion, the stirring blades stir the sewage and the activated sludge to enable the sewage and the activated sludge to be in rapid and full contact and react, the purification of the sewage is accelerated, the activated carbon in the filter tank adsorbs organic matters which are not decomposed by the reaction of microorganisms in the activated sludge, and fine particles which are not filtered by the filter screen are adsorbed, so that the quality of sewage treatment is further enhanced.

Description

Microbial sewage purifier for environmental protection

Technical Field

The invention relates to the field of sewage environmental protection, in particular to a microbial sewage environment-friendly purification device.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people; the microbial sewage treatment strain has the characteristics of rapid propagation, strong vitality, safety, no toxicity and the like, and the microbial bacteria propagate by consuming organic pollutants in water, thereby having better removal effect on the organic pollutants in the sewage.

The existing purification device for the environment protection of the microbial sewage has the defects that the time for carrying out contact reaction on the microbes in the sewage and the activated sludge is long, the speed for purifying the sewage is low, and the influence on the quality of sewage treatment is caused by the fact that some particle impurities and organic matters in the sewage cannot react and be purified by the microbes.

Therefore, it is necessary to provide a purification device for microbial wastewater environmental protection to solve the above technical problems.

Disclosure of Invention

The invention provides a microbial sewage environment-friendly purification device, which solves the problems that the contact reaction time of microbes in sewage and activated sludge is long, the sewage purification speed is low, and the quality of sewage treatment is affected because some microbes cannot react with purified particle impurities and organic matters.

In order to solve the above technical problems, the present invention provides a microbial sewage environment-friendly purification device, comprising: a base;

the top of the base is fixedly connected with an aeration tank, the left side of the inner wall of the aeration tank is fixedly connected with a first gear, the inside of the first gear is rotatably connected with a rotating shaft, the right end of the rotating shaft is fixedly connected with a connecting rod, both ends of the connecting rod are rotatably connected with stirring rods, the left ends of the two stirring rods are fixedly connected with a second gear, the outer surfaces of the two stirring rods are fixedly connected with stirring blades, the right side of the inner wall of the aeration tank is fixedly connected with a circular sliding rail, the top of the base is fixedly connected with a fixed seat positioned at the left side of the aeration tank, the top of the fixed seat is fixedly connected with a motor, the front side and the back side of the inner wall of the aeration tank are fixedly connected with a plurality of first sliding grooves, a filter screen is movably connected between the insides of the two first sliding grooves, the right-hand member of two puddler all with the inside sliding connection of circular slide rail, the one end of axis of rotation runs through the aeration tank and extends to the left side of aeration tank, the axis of rotation extends to the left one end of aeration tank with the output shaft fixed connection of motor, the equal fixedly connected with in front and the back of aeration tank inner wall is three first spout, per two on same horizontal plane equal swing joint has one between the relative one side of first spout the filter screen, it is three the net hole of filter screen diminishes from top to bottom gradually, activated sludge has been placed to the bottom of aeration tank inner wall.

Preferably, the top of base just is located the right side fixedly connected with sedimentation tank of aeration tank, the top of base just is located the right side fixedly connected with filtering ponds of sedimentation tank, the front and the back of filtering ponds inner wall all are provided with the second spout, two swing joint has the active carbon installing frame between the inside of second spout, the top fixedly connected with handle of active carbon installing frame, the inside of active carbon installing frame is provided with the active carbon, the top of filtering ponds just is located the top of second spout is provided with logical groove to the active carbon installing frame can be followed and taken out in the filtering ponds.

Preferably, the top of filtering ponds is provided with two apron, two fixedly connected with connecting plate between the top of apron, the top of filtering ponds is provided with two draw-in grooves, two the apron is located one side that the groove was led to in the filtering ponds top for fix the active carbon installing frame in the filtering ponds, two the edge of apron bottom all is provided with the cardboard, two the draw-in groove is located the opposite side that the groove was led to in the filtering ponds top carries out the chucking to two cardboards.

Preferably, the left side fixedly connected with pull rod of filter screen, the left side of aeration tank is provided with rubber seal, and rubber seal is used for preventing that sewage from oozing from filter screen and aeration tank installation department, rubber seal all sets up the hole in the place that every handle corresponds.

Preferably, the left side of the aeration tank is located on a top fixedly connected with a fixing frame of the motor, the top of the fixing frame is fixedly connected with an air blower, an air outlet end of the air blower is fixedly connected with a ventilation pipe, and the right end of the ventilation pipe penetrates through the aeration tank and extends to the inside of the aeration tank.

Preferably, a fixing plate is fixedly connected between the opposite sides of the aeration tank and the sedimentation tank, a first water pump is fixedly connected to the top of the fixing plate, and the water outlet end of the first water pump is communicated with the left side of the sedimentation tank.

Preferably, the right side fixedly connected with of aeration tank inner wall draws water the pipeline, the top of aeration tank is provided with the water inlet, the one end that draws water the pipeline communicates with each other with the end of intaking of first water pump, it is in to draw water the pipeline the positive edge of inclined to one side inner wall in the aeration tank to prevent with the puddler looks friction.

Preferably, a second water pump is fixedly connected to the top of the base and located between the aeration tank and the opposite side of the sedimentation tank, a water inlet end of the second water pump is communicated with the left side of the sedimentation tank, and a water outlet end of the second water pump is communicated with the right side of the aeration tank.

Preferably, a water outlet pipe is arranged on the right side of the sedimentation tank, a valve is arranged inside the water outlet pipe, a water outlet is arranged on the right side of the filtering tank, and the other end of the water outlet pipe is communicated with the left side of the filtering tank.

The working method of the microbial sewage environment-friendly purification device comprises the following steps:

s1, injecting sewage into the aeration tank through the water inlet, wherein the sewage flows through the net holes of the three filter screens, the net holes of the three filter screens filter particle impurities in the sewage, after the sewage flows to the bottoms of the filter screens, starting a motor and an air blower, wherein the air blower injects oxygen required by microbial reaction into the sewage, the motor drives a connecting rod to do circular motion by taking a rotating shaft as the center through the rotating shaft, and two ends of the connecting rod drive two second gears to do circular motion on the tooth surfaces of the first gear, so that the two stirring rods are driven to do circular motion rotation;

s2, because the connecting rod is rotationally connected with the stirring rods, the two stirring rods do rotation motion while doing circular motion, the other ends of the two stirring rods rotate inside the circular slide rail, the stirring blades on the outer surfaces of the stirring rods stir the sewage and the activated sludge, so that the sewage and the activated sludge are in rapid and sufficient contact and react, the purification of the sewage is accelerated, and then the sewage after the reaction is pumped into a sedimentation tank by the first water pump;

s3, after the precipitation is finished, the valve is opened, clear water on the upper layer after the precipitation flows into the filter tank through the water outlet pipe, activated sludge precipitated by the second water pump is pumped back into the aeration tank for recycling, organic matters which are not decomposed by the microorganisms in the activated sludge are not reacted by activated carbon in the filter tank, fine particles which are not filtered by the filter screen are adsorbed, the quality of sewage treatment is further enhanced, a treated water source flows out through the water outlet, the filter screen and the activated carbon need to be cleaned after being used for a period of time, otherwise, the filtration of sewage can be influenced, the rubber sealing ring is opened, the filter screen is pumped out of the aeration tank through the pull rod to be cleaned, the cover plate is opened by pulling the connecting plate, the activated carbon mounting frame is taken out through the handle, and the activated carbon is subjected to regeneration treatment or is replaced by new activated.

Compared with the related art, the purification device for the microbial sewage environment protection provided by the invention has the following beneficial effects:

1. according to the invention, the rotating shaft is driven to rotate by the motor, the rotating shaft drives the connecting rod to do circular motion by taking the rotating shaft as a center, two ends of the connecting rod drive two second gears to do circular motion on the tooth surface of the first gear, so that two stirring rods are driven to do circular motion rotation, the connecting rod is rotationally connected with the stirring rods, so that the two stirring rods do rotation motion while doing circular motion, the other ends of the two stirring rods rotate along with the inside of the circular slide rail, and the stirring blades on the outer surfaces of the stirring rods stir sewage and activated sludge, so that the sewage and the activated sludge are in rapid and sufficient contact and react, and the purification of the sewage is accelerated;

2. according to the invention, organic matters which are not decomposed by the reaction of microorganisms in the activated sludge are adsorbed by fine particles which are not filtered by the filter screen through the activated carbon in the filter tank, so that the quality of sewage treatment is further enhanced.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a microbial sewage environment-friendly purification apparatus provided by the present invention.

Fig. 2 is a left-side view of the aeration tank of fig. 1.

Fig. 3 is a schematic diagram of the left-side external structure of the aeration tank shown in fig. 1.

Fig. 4 is a schematic view of the three-dimensional structure shown in fig. 1 from the top.

Fig. 5 is a left side view of the circular slide rail shown in fig. 1.

Fig. 6 is a schematic three-dimensional structure diagram of an activated carbon mounting frame.

Reference numbers in the figures: 1. the aeration device comprises a base, 2, an aeration tank, 3, a first gear, 4, a rotating shaft, 5, a connecting rod, 6, a stirring rod, 7, a second gear, 8, a stirring blade, 9, a circular sliding rail, 10, a fixing seat, 11, a motor, 12, a first sliding chute, 13, a filter screen, 14, a sedimentation tank, 15, a filter tank, 16, a second sliding chute, 17, an active carbon mounting frame, 18, a handle, 19, active carbon, 20, a cover plate, 21, a connecting plate, 22, a clamping groove, 23, a pull rod, 24, a rubber sealing ring, 25, a fixing frame, 26, an air blower, 27, a ventilation pipe, 28, a fixing plate, 29, a first water pump, 30, a water pumping pipeline, 31, a water inlet, 32, a second water pump, 33, a water outlet pipe, 34, a valve, 35 and.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1-6, a microbial sewage environmental protection purification apparatus includes: a base 1;

the top of the base 1 is fixedly connected with an aeration tank 2, the left side of the inner wall of the aeration tank 2 is fixedly connected with a first gear 3, the inside of the first gear 3 is rotatably connected with a rotating shaft 4, the right end of the rotating shaft 4 is fixedly connected with a connecting rod 5, both ends of the connecting rod 5 are rotatably connected with stirring rods 6, the left ends of the two stirring rods 6 are fixedly connected with a second gear 7, the outer surfaces of the two stirring rods 6 are fixedly connected with stirring blades 8, the right side of the inner wall of the aeration tank 2 is fixedly connected with a circular slide rail 9, the top of the base 1 and the left side of the aeration tank 2 are fixedly connected with a fixed seat 10, the top of the fixed seat 10 is fixedly connected with a motor 11, the front and the back of the inner wall of the aeration tank 2 are fixedly connected with a plurality of first chutes 12, and a filter screen 13 is movably connected between the, two the second gear 7 all with the meshing of first gear 3, two the right-hand member of puddler 6 all with the inside sliding connection of circular slide rail 9, the one end of axis of rotation 4 runs through aeration tank 2 and extends to the left side of aeration tank 2, axis of rotation 4 extend to the left one end of aeration tank 2 with the output shaft fixed connection of motor 11, the equal fixedly connected with of the front and the back of aeration tank 2 inner wall is three first spout 12, every two on same horizontal plane equal swing joint has one between the relative one side of first spout 12 filter screen 13, it is three the net hole of filter screen 13 diminishes gradually from top to bottom, activated sludge has been placed to the bottom of aeration tank 2 inner wall.

The top of base 1 just is located the right side fixedly connected with sedimentation tank 14 of aeration tank 2, the top of base 1 just is located the right side fixedly connected with filtering ponds 15 of sedimentation tank 14, the front and the back of filtering ponds 15 inner wall all are provided with second spout 16, two swing joint has activated carbon installing frame 17 between the inside of second spout 16, activated carbon installing frame 17's top fixedly connected with handle 18, activated carbon installing frame 17's inside is provided with active carbon 19, filtering ponds 15's top just is located the top of second spout 16 is provided with logical groove to activated carbon installing frame 17 can take out from filtering ponds 15.

The top of filtering ponds 15 is provided with two apron 20, two fixedly connected with connecting plate 21 between the top of apron 20, the top of filtering ponds 15 is provided with two draw-in grooves 22, two apron 20 is located one side that the groove was led to in filtering ponds 15 top for fix the active carbon installing frame 17 in filtering ponds 15, two the edge of apron 20 bottom all is provided with the cardboard, two draw-in grooves 22 is located the opposite side that the groove was led to in filtering ponds 15 top carries out the chucking to two cardboards.

The left side of the filter screen 13 is fixedly connected with a pull rod 23, the left side of the aeration tank 2 is provided with a rubber sealing ring 24, the rubber sealing ring 24 is used for preventing sewage from seeping from the installation positions of the filter screen 13 and the aeration tank 2, and the rubber sealing ring 24 is provided with holes at the corresponding positions of the handles 18.

The left side of the aeration tank 2 is located on the top of the motor 11 and is fixedly connected with a fixing frame 25, the top of the fixing frame 25 is fixedly connected with an air blower 26, the air outlet end of the air blower 26 is fixedly connected with a ventilation pipe 27, and the right end of the ventilation pipe 27 penetrates through the aeration tank 2 and extends to the inside of the aeration tank 2.

A fixing plate 28 is fixedly connected between the aeration tank 2 and the opposite side of the sedimentation tank 14, a first water pump 29 is fixedly connected to the top of the fixing plate 28, and the water outlet end of the first water pump 29 is communicated with the left side of the sedimentation tank 14.

The right side fixedly connected with of 2 inner walls of aeration tank draws water pipeline 30, the top of aeration tank 2 is provided with water inlet 31, the one end that draws water pipeline 30 and first water pump 29 intake the end and communicate with each other, it is in to draw water pipeline 30 the positive edge of inclined to one side inner wall in aeration tank 2 to prevent rubbing 6 looks with the puddler.

A second water pump 32 is fixedly connected between the top of the base 1 and the side of the aeration tank 2 opposite to the sedimentation tank 14, the water inlet end of the second water pump 32 is communicated with the left side of the sedimentation tank 14, and the water outlet end of the second water pump 32 is communicated with the right side of the aeration tank 2.

A water outlet pipe 33 is arranged on the right side of the sedimentation tank 14, a valve 34 is arranged inside the water outlet pipe 33, a water outlet 35 is arranged on the right side of the filtering tank 15, and the other end of the water outlet pipe 33 is communicated with the left side of the filtering tank 15.

The working principle of the microbial sewage environment-friendly purification device provided by the invention is as follows:

s1, injecting sewage into the aeration tank 2 through the water inlet 31, wherein the sewage flows through the net holes of the three filter screens 13, the net holes of the three filter screens 13 filter particle impurities in the sewage, after the sewage flows to the bottom of the filter screens 13, starting the motor 11 and the blower 26, the blower 26 injects oxygen required by microbial reaction into the sewage, the motor 11 drives the connecting rod 5 to do circular motion by taking the rotating shaft 4 as the center through the rotating shaft 4, and two ends of the connecting rod 5 drive the two second gears 7 to do circular motion on the tooth surfaces of the first gears 3, so as to drive the two stirring rods 6 to do circular motion rotation;

s2, because the connecting rod 5 is rotatably connected with the stirring rods 6, the two stirring rods 6 do rotation motion while performing circular motion, the other ends of the two stirring rods 6 rotate inside the circular slide rail 9, the stirring blades 8 on the outer surfaces of the stirring rods 6 stir the sewage and the activated sludge, so that the sewage and the activated sludge are quickly and fully contacted and react to accelerate the purification of the sewage, and then the sewage after the reaction is pumped into the sedimentation tank 14 by the first water pump 29;

s3, after the precipitation is finished, opening the valve 34, leading the clear water at the upper layer after the precipitation to flow into the filtering tank 15 through the water outlet pipe 33, the precipitated activated sludge is pumped back to the aeration tank 2 by the second water pump 32 for recycling, the activated carbon 19 in the filter tank 15 enables organic matters which are not decomposed by the microorganisms in the activated sludge to be not reacted and adsorbed by fine particles filtered by the filter screen 13, the quality of sewage treatment is further enhanced, the treated water source flows out through the water outlet 35, the filter screen 13 and the activated carbon 19 need to be cleaned after being used for a period of time, otherwise, the filtering of the sewage is influenced, the rubber sealing ring 24 is opened, the filter screen 13 can be cleaned by drawing out the filter screen from the aeration tank 2 through the pull rod 23, the cover plate 20 is opened by pulling the connecting plate 21, the activated carbon mounting frame 17 is taken out by the handle 18, and the activated carbon 19 is regenerated or replaced with a new activated carbon 19.

the motor 11 drives the connecting rod 5 through the axis of rotation 4 and uses the axis of rotation 4 to be circular motion as the center, the both ends of connecting rod 5 drive two second gears 7 and do circular motion at the tooth face of first gear 3, thereby drive two puddlers 6 and do circular motion and rotate, because connecting rod 5 and puddler 6 rotate to be connected, so also carry out rotation motion when two puddlers 6 circular motion, the other end of two puddlers 6 follows in the inside of circular slide rail 9 and rotates, stirring leaf 8 of puddler 6 surface stirs sewage and activated sludge, make its quick abundant contact and react, accelerate the purification to sewage, activated carbon 19 in the filtering ponds 15 is with the organic matter that the microorganism does not have the reaction decomposition in the activated sludge, the tiny particle that does not filter by filter screen 13 adsorbs, further strengthen sewage treatment's quality.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a purifier is used in microorganism sewage environmental protection which characterized in that includes: a base (1);

the top of the base (1) is fixedly connected with an aeration tank (2), the left side of the inner wall of the aeration tank (2) is fixedly connected with a first gear (3), the inside of the first gear (3) is rotatably connected with a rotating shaft (4), the right end of the rotating shaft (4) is fixedly connected with a connecting rod (5), and two ends of the connecting rod (5) are rotatably connected with stirring rods (6);

the left ends of the two stirring rods (6) are fixedly connected with a second gear (7), the outer surfaces of the two stirring rods (6) are fixedly connected with stirring blades (8), the right side of the inner wall of the aeration tank (2) is fixedly connected with a circular slide rail (9), the top of the base (1) and the left side of the aeration tank (2) are fixedly connected with a fixed seat (10), the top of the fixed seat (10) is fixedly connected with a motor (11), the front side and the back side of the inner wall of the aeration tank (2) are fixedly connected with a plurality of first sliding chutes (12), and a filter screen (13) is movably connected between the interiors of the two first sliding chutes (12);

the two second gears (7) are meshed with the first gear (3), the right ends of the two stirring rods (6) are connected with the inner part of the circular slide rail (9) in a sliding way, one end of the rotating shaft (4) penetrates through the aeration tank (2) and extends to the left side of the aeration tank (2), one end of the rotating shaft (4) extending to the left side of the aeration tank (2) is fixedly connected with an output shaft of the motor (11), the front and the back of the inner wall of the aeration tank (2) are fixedly connected with three first chutes (12), every two are arranged on the same horizontal plane, one filter screen (13) is movably connected between one side opposite to the first chutes (12), the number of the mesh holes of the filter screen (13) is gradually reduced from top to bottom, and activated sludge is placed at the bottom of the inner wall of the aeration tank (2).

2. The microbial sewage environment-friendly purification device as claimed in claim 1, wherein the top of the base (1) is located on the right side of the aeration tank (2) and is fixedly connected with a sedimentation tank (14), the top of the base (1) is located on the right side of the sedimentation tank (14) and is fixedly connected with a filter tank (15), the front and back of the inner wall of the filter tank (15) are respectively provided with a second chute (16), an active carbon mounting frame (17) is movably connected between the two inside of the second chute (16), the top of the active carbon mounting frame (17) is fixedly connected with a handle (18), the inside of the active carbon mounting frame (17) is provided with active carbon (19), and the top of the filter tank (15) and the top of the second chute (16) are provided with a through groove.

3. The purification device for the environmental protection of the microbial wastewater as claimed in claim 2, wherein two cover plates (20) are arranged on the top of the filtration tank (15), a connecting plate (21) is fixedly connected between the tops of the two cover plates (20), two clamping grooves (22) are arranged on the top of the filtration tank (15), the two cover plates (20) are located on one side of the through groove on the top of the filtration tank (15), clamping plates are arranged on the edges of the bottoms of the two cover plates (20), and the two clamping grooves (22) are located on the other side of the through groove on the top of the filtration tank (15).

4. The device for purifying the microbial sewage in the environmental protection manner according to claim 1, wherein a pull rod (23) is fixedly connected to the left side of the filter screen (13), a rubber sealing ring (24) is arranged on the left side of the aeration tank (2), and holes are formed in the rubber sealing ring (24) at positions corresponding to the handles (18).

5. The device of claim 1, wherein a fixing frame (25) is fixedly connected to the left side of the aeration tank (2) and located at the top of the motor (11), a blower (26) is fixedly connected to the top of the fixing frame (25), a ventilation pipe (27) is fixedly connected to the air outlet end of the blower (26), and the right end of the ventilation pipe (27) penetrates through the aeration tank (2) and extends into the aeration tank (2).

6. The microbial sewage environment-friendly purification device as claimed in claim 2, wherein a fixing plate (28) is fixedly connected between the aeration tank (2) and the side opposite to the sedimentation tank (14), a first water pump (29) is fixedly connected to the top of the fixing plate (28), and the water outlet end of the first water pump (29) is communicated with the left side of the sedimentation tank (14).

7. The microbial sewage environment-friendly purification device as claimed in claim 1, wherein a water pumping pipeline (30) is fixedly connected to the right side of the inner wall of the aeration tank (2), a water inlet (31) is formed in the top of the aeration tank (2), one end of the water pumping pipeline (30) is communicated with a water inlet end of a first water pump (29), and the water pumping pipeline (30) is arranged at the edge of the inner wall of the aeration tank (2) which is inclined to the front side.

8. The microbial sewage environment-friendly purification device as claimed in claim 1, wherein a second water pump (32) is fixedly connected to the top of the base (1) and located between the aeration tank (2) and the side opposite to the sedimentation tank (14), the water inlet end of the second water pump (32) is communicated with the left side of the sedimentation tank (14), and the water outlet end of the second water pump (32) is communicated with the right side of the aeration tank (2).

9. The microbial sewage environment-friendly purification device as claimed in claim 2, wherein a water outlet pipe (33) is arranged on the right side of the sedimentation tank (14), a valve (34) is arranged inside the water outlet pipe (33), a water outlet (35) is arranged on the right side of the filtering tank (15), and the other end of the water outlet pipe (33) is communicated with the left side of the filtering tank (15).

10. A method of operating the microbial wastewater environmental protection purification apparatus of claims 1 to 9:

s1, injecting sewage into the aeration tank (2) through the water inlet (31), enabling the sewage to flow through the net holes of the three filter nets (13), filtering particle impurities existing in the sewage through the net holes of the three filter nets (13), starting the motor (11) and the air blower (26) after the sewage flows to the bottom of the filter nets (13), enabling the air blower (26) to inject oxygen required by microbial reaction into the sewage, enabling the motor (11) to drive the connecting rod (5) to do circular motion by taking the rotating shaft (4) as the center through the rotating shaft (4), and enabling two ends of the connecting rod (5) to drive the two second gears (7) to do circular motion on the tooth surfaces of the first gears (3) so as to drive the two stirring rods (6) to do circular motion rotation;

s2, connecting rods (5) are rotatably connected with stirring rods (6), the two stirring rods (6) do rotation motion while doing circular motion, the other ends of the two stirring rods (6) rotate inside a circular slide rail (9), stirring blades (8) on the outer surfaces of the stirring rods (6) stir sewage and activated sludge, so that the sewage and the activated sludge can be quickly and fully contacted and reacted, the purification of the sewage is accelerated, and then a first water pump (29) pumps the sewage after the reaction into a sedimentation tank (14);

s3, after precipitation is finished, a valve (34) is opened, clear water on the upper layer after precipitation flows into a filter tank (15) through a water outlet pipe (33), precipitated activated sludge is pumped back into an aeration tank (2) through a second water pump (32) for recycling, organic matters which are not decomposed by the microorganisms in the activated sludge and are not reacted are adsorbed by fine particles filtered by a filter screen (13) by activated carbon (19) in the filter tank (15), the quality of sewage treatment is further enhanced, a treated water source flows out through a water outlet (35), the filter screen (13) and the activated carbon (19) need to be cleaned after being used for a period of time, otherwise, the filtration of the sewage is influenced, a rubber sealing ring (24) is opened, the filter screen (13) is pumped out of the aeration tank (2) through a pull rod (23) to clean the water source, a cover plate (20) is opened by pulling a connecting plate (21), and an activated carbon mounting frame (17) is taken out through a handle (18), the activated carbon (19) is subjected to a regeneration treatment or replaced with new activated carbon (19).