CN115403137A

CN115403137A - Low-temperature high-altitude sewage treatment device and method

Info

Publication number: CN115403137A
Application number: CN202211046486.3A
Authority: CN
Inventors: 张波; 王建军; 白海波; 蒋鑫; 梁皓
Original assignee: Sichuan Development Environmental Science And Technology Research Institute Co ltd
Current assignee: Sichuan Development Environmental Science And Technology Research Institute Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-11-29
Anticipated expiration: 2042-08-30
Also published as: CN115403137B

Abstract

The invention relates to the field of sewage treatment, in particular to a low-temperature high-altitude sewage treatment device and a method, which comprises an aeration tank, and a water inlet pipe and a water outlet pipe which are arranged on the aeration tank, wherein a shaking heating mechanism for heating sewage is arranged on the aeration tank, a scraping mechanism for scraping sludge attached to a heating element is arranged on the shaking heating mechanism, and a tensioning mechanism for transmission is arranged between the scraping mechanism and the shaking heating mechanism. According to the invention, by adding the aeration tank, the shaking heating mechanism, the tensioning mechanism, the scraping mechanism and the like, sewage flows into the aeration tank from the water inlet pipe, the shaking heating mechanism is controlled to heat the sewage, so that microorganisms in the activated sludge have good activity, and as the heating element can shake back and forth during heating, the attachment amount of the sludge on the heating element can be reduced, heat can be conducted into the sewage, the energy consumption is reduced, the scraping mechanism is driven by the tensioning mechanism, the linkage is good, the structure is compact, no additional electric device is needed, and the cost is reduced.

Description

Low-temperature high-altitude sewage treatment device and method

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a low-temperature high-altitude sewage treatment device and method.

Background

The activated sludge process is an aerobic biological treatment method for sewage and has the characteristics of low treatment cost, good effect and stability. However, microorganisms on activated sludge are sensitive to temperature changes, and when low-temperature high-altitude sewage is treated, the metabolic function of the microorganisms is weakened, the activity is reduced, and the sewage treatment effect is deteriorated.

In order to ensure the activity of microorganisms, a heating device is often installed in the aeration tank to increase the temperature of water. The patent publication No. CN212293236U adopts the above-mentioned method to raise the temperature of the sewage. Because heating device direct fixed mounting is in the aeration tank, impurity such as mud in the sewage can be attached to on heating device, and after long-time the use, impurity such as mud forms the overburden slowly on heating device, exists certain isolated, causes heating device to the heat conduction effect variation of sewage, can lead to the energy consumption increase.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a low-temperature high-altitude sewage treatment device and a method, which solve the problem that a heating device in the low-temperature high-altitude sewage treatment device in the prior art influences heat transfer due to sludge, reduce the attachment amount of the sludge on the heating device, facilitate heat transfer to sewage and reduce energy consumption.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a sewage treatment device at low temperature and high altitude comprises an aeration tank, and a water inlet pipe and a water outlet pipe which are arranged on the aeration tank, wherein a sludge return pipe is communicated with the water inlet pipe, and a shaking heating mechanism for heating sewage is arranged on the aeration tank.

The shaking heating mechanism comprises a supporting frame which is slidably installed in the aeration tank, a plurality of heating elements are arranged on the supporting frame, a push-pull rod is fixed on the supporting frame, a connecting rod is installed on the push-pull rod in a rotating mode, a deflection rod is installed at the other end of the connecting rod in a rotating mode, a rotating plate is fixed on the deflection rod, a rotating shaft is fixed at the other end of the rotating plate, a supporting frame is fixed on the aeration tank, and a motor used for driving the rotating shaft to rotate is installed on the supporting frame.

The shaking heating mechanism is provided with a scraping mechanism for scraping sludge attached to the heating member, and a tensioning mechanism for transmission is arranged between the scraping mechanism and the shaking heating mechanism.

Preferably, the support frame comprises a first support rod and a second support rod, an engaging rod for improving stability is fixed between the first support rod and the second support rod, and the push-pull rod is fixed on the engaging rod. The heating member is including installing the electrical bar on bracing piece one, the bracing piece is fixed with sealed adapter sleeve corresponding to the position of electrical bar, and threaded mounting has a protecting sleeve on the sealed adapter sleeve. Be equipped with aeration mechanism on the aeration tank, aeration mechanism is including being fixed in a plurality of lateral pipes in the aeration tank, and the aeration head is installed to the intercommunication on the lateral pipe, and the intercommunication has the gas-supply pipe on the lateral pipe, and the one end that the lateral pipe was kept away from to the gas-supply pipe stretches out the aeration tank and the intercommunication installs aeration fan.

Preferably, strike off the mechanism including being fixed in two pole settings on bracing piece one and the bracing piece two respectively, rotate on the pole setting and install reciprocal screw rod, the transmission installs the movable block on the reciprocal screw rod, and slidable mounting has the traveller fixed with the pole setting on the movable block, and is fixed with the montant on the movable block, and the other end of montant is fixed with the horizontal pole, and the other end of horizontal pole is fixed with a plurality of connecting plates that have the through-hole, is equipped with detachable clearance brush spare on the connecting plate. The cleaning brush piece comprises a first half ring brush and a second half ring brush, a plurality of elastic clamping rods are fixed on the first half ring brush, and clamping holes clamped with the elastic clamping rods are formed in the second half ring brush.

Preferably, straining device establishes including backup pad, the cover that is fixed in on the aeration tank and installs belt pulley one in the pivot and the cover establishes and installs belt pulley two on reciprocating screw, slidable mounting has the carriage release lever in the backup pad, and the bottom mounting of carriage release lever has the limiting plate, and the cover is equipped with the spring on the carriage release lever, and the spring is fixed in between backup pad and the limiting plate, the top of carriage release lever is rotated and is installed the circle axle, and the cover is established on the circle axle and is installed belt pulley three, and the cover is equipped with the drive belt between belt pulley three, belt pulley two and the belt pulley one.

Preferably, the position that corresponds the sheath section of thick bamboo on the bracing piece two is seted up jaggedly, is equipped with the positioning mechanism who is used for preventing the sheath section of thick bamboo deflection in the breach, and positioning mechanism is fixed with the arm-tie on the pars contractilis of elasticity telescopic link including being fixed in the intraoral elasticity telescopic link of breach, the bar hole has been seted up on the arm-tie, the breach internal fixation has the elastic plate, is fixed with the link plate that is used for the joint arm-tie on the elastic plate, set up the locating hole of pegging graft with elasticity telescopic link on the sheath section of thick bamboo.

Preferably, a throwing mechanism is arranged on the moving block and comprises storage tanks which are arranged on the moving block and used for storing flocculating agents, the bottom ends of the storage tanks are symmetrically communicated and provided with throwing pipes, electromagnetic valves are arranged on the vertical sections of the throwing pipes, and the inclined sections of the throwing pipes are communicated with a plurality of material distributing pipes.

The invention also provides a sewage treatment method of the low-temperature high-altitude sewage treatment device, which comprises the following steps:

1) Sewage flows into the aeration tank from the water inlet pipe, the feeding mechanism is controlled to feed a flocculating agent into the aeration tank, and then the aeration mechanism is controlled to carry out aeration treatment on the sewage.

2) In the sewage aeration treatment, the shaking heating mechanism is controlled to heat the sewage, and meanwhile, the scraping mechanism is used for scraping the sludge on the heating element.

3) The sewage after aeration treatment flows out from the water outlet pipe, and part of the flowing activated sludge returns to the aeration tank from the sludge return pipe.

(III) advantageous effects

The invention provides a low-temperature high-altitude sewage treatment device and a method, which have the following beneficial effects:

1. through adding aeration tank and wave heating mechanism etc. sewage flows into in the aeration tank from the inlet tube, and control is waved heating mechanism and is heaied up sewage, guarantees that the microorganism has good activity among the activated sludge, because the heating member also can make a round trip to rock when the heating, can reduce the adhesion volume of mud above that, is favorable to in heat conduction to sewage, has reduced the energy consumption.

2. Through adding straining device and scraping the mechanism, wave heating mechanism during operation, through straining device's transmission, can drive and strike off the mechanism work, further clear up adnexed mud on the heating member, further improved thermal conduction effect, the power consumption reduces.

3. The tensioning mechanism is added, the motor is started to drive the rotating shaft to rotate, the reciprocating screw rod can be driven to rotate through the transmission of the belt wheel I, the belt wheel II, the belt wheel III and the transmission belt, the transmission is realized, the linkage is good, the structure is compact, no electric part is additionally used for driving the reciprocating screw rod to rotate, and the cost is reduced.

4. Through adding input mechanism, open the solenoid valve, the flocculating agent in the holding vessel can follow and input the pipe and fall into in the aeration tank on the branch material pipe, because input mechanism can remove, the input mechanism of removal can be with the flocculating agent more for even spilling in the sewage in the aeration tank, guaranteed that each part sewage has better flocculation effect.

5. Through adding positioning mechanism, sheath section of thick bamboo installation back, steerable elasticity telescopic link inserts in the locating hole, plays limiting displacement to a sheath section of thick bamboo, can prevent that a sheath section of thick bamboo from taking place to deflect because of rocking, avoids a sheath section of thick bamboo and sealed adapter sleeve to take place to deflect not hard up and lead to in the sewage gets into a sheath section of thick bamboo.

6. Through adding the clearance brush spare, outwards break off with the fingers and thumb semi-ring brush one and semi-ring brush two for elasticity kelly breaks away from in the card hole, can take off the clearance brush spare, and reverse operation can be installed new semi-ring brush one and semi-ring brush two on the connecting plate, makes the loading and unloading of clearance brush spare comparatively convenient.

The invention can reduce the attachment amount of sludge on the heating element, is beneficial to heat conduction to sewage, improves the heat conduction effect and reduces the energy consumption.

Drawings

FIG. 1 is a schematic view of the sewage treatment apparatus according to the present invention;

FIG. 2 is a schematic view of another perspective structure of the sewage treatment apparatus of the present invention;

FIG. 3 is a schematic view of the rocking heating mechanism, the tensioning mechanism and the scraping mechanism of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the tensioning mechanism of the present invention;

fig. 6 is a schematic view of a portion of the scraping mechanism of the present invention;

FIG. 7 is an exploded view of the cleaning brush configuration of the present invention;

FIG. 8 is a schematic structural diagram of a feeding mechanism of the present invention;

FIG. 9 is a schematic view of a supporting frame according to the present invention;

FIG. 10 is an enlarged view of portion B of FIG. 9 in accordance with the present invention;

FIG. 11 is a semi-exploded view of the heating element configuration of the present invention;

FIG. 12 is a schematic structural view of an aeration mechanism according to the present invention.

In the figure: 1. an aeration tank; 2. an aeration mechanism; 21. an aeration fan; 22. a gas delivery pipe; 23. a branch pipe; 24. an aeration head; 3. shaking the heating mechanism; 31. a support frame; 32. a rotating shaft; 33. a rotating plate; 34. a deflection rod; 35. a connecting rod; 36. a push-pull rod; 37. a support frame; 371. a first supporting rod; 372. a second supporting rod; 373. a connecting rod; 38. a heating member; 381. an electric heating rod; 382. a sheathing tube; 383. sealing the connecting sleeve; 39. a motor; 4. a tensioning mechanism; 41. a first belt wheel; 42. a second belt wheel; 43. a third belt wheel; 44. a transmission belt; 45. a circular shaft; 46. a travel bar; 47. a support plate; 48. a spring; 49. a limiting plate; 5. a scraping mechanism; 51. erecting a rod; 52. a reciprocating screw; 53. a traveler; 54. a moving block; 55. a vertical rod; 56. a cross bar; 57. a connecting plate; 58. cleaning the brush; 581. a first semi-ring brush; 582. an elastic clamping rod; 583. a second semi-ring brush; 584. a clamping hole; 6. a feeding mechanism; 61. a storage tank; 62. a casting pipe; 63. distributing pipes; 64. an electromagnetic valve; 7. a positioning mechanism; 71. an elastic telescopic rod; 72. positioning holes; 73. pulling a plate; 74. a strip-shaped hole; 75. an elastic plate; 76. hanging the plate; 8. a water inlet pipe; 9. a sludge return pipe; 10. and (5) discharging a water pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-12, a low-temperature high-altitude sewage treatment device comprises an aeration tank 1, and a water inlet pipe 8 and a water outlet pipe 10 thereon, wherein the water inlet pipe 8 is communicated with a sludge return pipe 9, the aeration tank 1 is provided with a shaking heating mechanism 3 for heating sewage, the shaking heating mechanism 3 is provided with a scraping mechanism 5 for scraping sludge attached to a heating element 38, and a tensioning mechanism 4 for transmission is arranged between the scraping mechanism 5 and the shaking heating mechanism 3. The sewage flows into the aeration tank 1 from the water inlet pipe 8, the shaking heating mechanism 3 is controlled to heat the sewage, so that the microorganisms in the activated sludge have good activity, the heating element 38 can shake back and forth during heating, the attachment of the sludge on the heating element can be reduced, and heat conduction is facilitated, so that the energy consumption is reduced, and meanwhile, the movement range of the heating element 38 is enlarged, so that the temperature rise of each section of the sewage in the aeration tank 1 is more uniform; when the heating mechanism 3 is shaken to move, the scraping mechanism 5 can be driven to work through the transmission of the tensioning mechanism 4, and further the sludge attached to the heating member 38 is cleaned, so that the heat is transmitted to the sewage.

The rocking heating mechanism 3 comprises a supporting frame 37 which is slidably mounted in the aeration tank 1, specifically, the supporting frame 37 comprises a first supporting rod 371 and a second supporting rod 372, a linking rod 373 for improving stability is fixed between the first supporting rod 371 and the second supporting rod 372, a push-pull rod 36 is fixed on the linking rod 373, a plurality of heating members 38 are arranged on the supporting frame 37, the push-pull rod 36 is fixed on the supporting frame 37, a connecting rod 35 is rotatably mounted on the push-pull rod 36, a deflection rod 34 is rotatably mounted at the other end of the connecting rod 35, a rotating plate 33 is fixed on the deflection rod 34, a rotating shaft 32 is fixed at the other end of the rotating plate 33, a supporting frame 31 is fixed on the aeration tank 1, and a motor 39 for driving the rotating shaft 32 to rotate is mounted on the supporting frame 31. The motor 39 is started to drive the rotating shaft 32 to rotate, and then the rotating plate 33 and the deflection rod 34 thereon are driven to rotate, and the push-pull rod 36 is driven to move back through the transmission of the connecting rod 35, so that the supporting frame 37 and the heating element 38 thereon can be driven to move back and forth, the heating element 38 can also shake back and forth during heating, the attachment amount of sludge on the heating element can be reduced, heat conduction is facilitated, and energy consumption is reduced.

In conclusion, the shaking heating mechanism 3 heats up sewage in the working process, so that the microorganisms in the activated sludge have good activity, the heating member 38 can shake back and forth during heating, the attachment amount of the sludge on the heating member can be reduced, heat conduction is facilitated, and energy consumption is reduced.

Specifically, the heating element 38 includes an electric heating rod 381 installed on a first support rod 371, a sealing connection sleeve 383 is fixed at a position, corresponding to the electric heating rod 381, of the first support rod 371, a sheath cylinder 382 is installed on the sealing connection sleeve 383 in a threaded mode, the sheath cylinder 382 is made of steel or copper, so that heat conduction is facilitated, and the steel sheath cylinder 382 is selected for use to reduce cost. The sheath cylinder 382 can prevent the electric heating rod 381 from being rusted by sewage, and the rusted sheath cylinder 382 can be replaced periodically.

In this embodiment, be equipped with aeration mechanism 2 on aeration tank 1, aeration mechanism 2 is including being fixed in a plurality of lateral pipes 23 in aeration tank 1, and aeration head 24 is installed to the intercommunication on the lateral pipe 23, and the intercommunication has gas-supply pipe 22 on the lateral pipe 23, and the one end that the gas-supply pipe 22 kept away from lateral pipe 23 stretches out aeration tank 1 and the intercommunication installs aeration fan 21. Wherein, the aeration fan 21 is started, air enters the branch pipe 23 through the air pipe 22 and is finally sprayed out from the aeration head 24, and the aeration treatment of the sewage is realized.

Example 2

Referring to fig. 3, 6-7, on the basis of embodiment 1, the scraping mechanism 5 includes two vertical rods 51 fixed on the first support rod 371 and the second support rod 372, a reciprocating screw 52 is rotatably mounted on the vertical rod 51, a moving block 54 is rotatably mounted on the reciprocating screw 52, a sliding post 53 fixed with the vertical rod 51 is slidably mounted on the moving block 54, a vertical rod 55 is fixed on the moving block 54, a cross rod 56 is fixed at the other end of the vertical rod 55, a plurality of connecting plates 57 with through holes are fixed at the other end of the cross rod 56, the through holes on the connecting plates 57 can be passed through by the elastic clamping rods 582, and a detachable cleaning brush 58 is arranged on the connecting plates 57. Wherein, when pivot 32 rotates, through straining device 4, drive reciprocal screw rod 52 and rotate, can drive movable block 54 reciprocating motion to can drive pole setting 51, horizontal pole 56, connecting plate 57 and the clearance brush 58 reciprocating motion on it, clear up the mud of the restrictive sleeve 382 in the clearance brush 58 and strike off, can be comparatively abundant strike off adnexed mud on the restrictive sleeve 382, improved the heat conduction effect of restrictive sleeve 382 to sewage, further reduced the energy consumption.

Further, the cleaning brush 58 comprises a first half-ring brush 581 and a second half-ring brush 583, wherein a plurality of elastic clamping rods 582 are fixed on the first half-ring brush 581, and clamping holes 584 clamped with the elastic clamping rods 582 are formed in the second half-ring brush 583. When the cleaning brush 58 needs to be replaced after being used for a long time, the first half-ring brush 581 and the second half-ring brush 583 are pulled outwards, the elastic clamping rod 582 is separated from the clamping hole 584, the cleaning brush 58 can be taken down, and the new first half-ring brush 581 and the second half-ring brush 583 can be installed on the connecting plate 57 through reverse operation, so that the cleaning brush 58 can be assembled and disassembled conveniently.

Example 3

Referring to fig. 3 and 5, based on the embodiment 2, the tensioning mechanism 4 includes a supporting plate 47 fixed on the aeration tank 1, a first pulley 41 sleeved on the rotating shaft 32, and a second pulley 42 sleeved on the reciprocating screw 52, a moving rod 46 is slidably mounted on the supporting plate 47, a limiting plate 49 is fixed at the bottom end of the moving rod 46, a spring 48 is sleeved on the moving rod 46, the spring 48 is fixed between the supporting plate 47 and the limiting plate 49, a circular shaft 45 is rotatably mounted at the top end of the moving rod 46, a third pulley 43 is sleeved on the circular shaft 45, and a transmission belt 44 is sleeved among the third pulley 43, the second pulley 42, and the first pulley 41. Wherein, the motor 39 is started to drive the rotating shaft 32 to rotate, and the reciprocating screw 52 can be driven to rotate through the transmission of the belt wheel I41, the belt wheel II 42, the belt wheel III 43 and the transmission belt 44, so that the transmission is realized; when the rocking heating mechanism 3 works, the second belt wheel 42 can move back and forth along with the scraping mechanism 5, when the second belt wheel 42 is far away from the first belt wheel 41, the third belt wheel 43 can move up, the spring 48 can always keep the transmission belt 44 in a tensioning state, when the second belt wheel 42 is close to the first belt wheel 41, the third belt wheel 43 can move down under the elastic force action of the spring 48, namely, the transmission of the scraping mechanism 5 in a motion state is realized, the linkage is good, the structure is compact, no electric part is additionally used for driving the reciprocating screw rod 52 to rotate, and the cost is also reduced.

Example 4

Referring to fig. 9-10, on the basis of embodiment 3, a position corresponding to the sheath cylinder 382 on the second support rod 372 is provided with a notch, a positioning mechanism 7 for preventing the sheath cylinder 382 from deflecting is provided in the notch, the positioning mechanism 7 includes an elastic expansion link 71 fixed in the notch, a pulling plate 73 is fixed on a telescopic portion of the elastic expansion link 71, a strip-shaped hole 74 is provided on the pulling plate 73, an elastic plate 75 is fixed in the notch, a hanging plate 76 for clamping the pulling plate 73 is fixed on the elastic plate 75, and a positioning hole 72 inserted into the elastic expansion link 71 is provided on the sheath cylinder 382. Before the sheath cylinder 382 is installed, in the process of pulling the pulling plate 73 (the elastic telescopic rod 71 is compressed), the elastic plate 75 is pressed downwards, the elastic plate 75 is bent downwards, the hanging plate 76 on the elastic plate 75 penetrates through the strip-shaped hole 74, then the elastic plate 75 is in a recovery state, the hanging plate 76 can be hung on the pulling plate 73, then the sheath cylinder 382 is installed on the sealing connecting sleeve 383 in a threaded manner, in the process, the elastic telescopic rod 71 cannot hinder the rotation of the sheath cylinder 382, the operation is convenient, after the installation of the sheath cylinder 382 is completed, the positioning hole 72 is right opposite to the elastic telescopic rod 71, at the moment, the hanging plate 76 is controlled to be separated from the pulling plate 73, the telescopic end of the elastic telescopic rod 71 can be inserted into the positioning hole 72, the sheath cylinder 382 is limited, the deflection of the sheath cylinder 382 can be prevented, and the deflection and the phenomenon that sewage enters the sheath cylinder 382 and the sealing connecting sleeve 383 are deflected and loosened to cause the sewage to enter the sheath cylinder 382 is avoided.

Example 5

Referring to fig. 8, on the basis of embodiment 4, a throwing mechanism 6 is arranged on the moving block 54, the throwing mechanism 6 includes a storage tank 61 installed on the moving block 54 for storing the flocculant, throwing pipes 62 are symmetrically installed on the bottom end of the storage tank 61 in a communicating manner, an electromagnetic valve 64 is installed on the vertical section of the throwing pipe 62, and a plurality of distributing pipes 63 are communicated on the inclined section of the throwing pipe 62. During aeration, the electromagnetic valve 64 can be controlled to be opened, the flocculating agent in the storage tank 61 can enter the throwing pipe 62, and then the flocculating agent can fall into the aeration tank 1 from the throwing pipe 62 and the material distributing pipe 63; because the throwing mechanism 6 is arranged on the moving block 54 and can move along with the movement of the moving block 54, the moving throwing mechanism 6 can uniformly spray the flocculating agent in the sewage in the aeration tank 1, and the better flocculation effect of each part of the sewage is ensured.

Example 6

The embodiment provides a sewage treatment method of a low-temperature high-altitude sewage treatment device, which specifically comprises the following steps:

1) Sewage flows into the aeration tank 1 from the water inlet pipe 8, the flocculating agent is put into the aeration tank 1 by the control throwing mechanism 6, and then the aeration treatment is carried out on the sewage by the control aerating mechanism 2.

2) In the sewage aeration treatment, the rocking heating mechanism 3 is controlled to raise the temperature of the sewage, and the scraping mechanism 5 is used to scrape off the sludge on the heating member 38.

3) The sewage after aeration treatment flows out from the water outlet pipe 10, and the outflow part of activated sludge can be returned to the aeration tank 1 from the sludge return pipe 9.

All kinds of parts used in this application file are standard parts, can purchase from the market, and the specific connected mode of each part all adopts conventional means such as ripe bolt, rivet and welding among the prior art, and machinery, part and electrical equipment all adopt conventional model among the prior art.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims

1. A sewage treatment device at low temperature and high altitude comprises an aeration tank (1) and a water inlet pipe (8) and a water outlet pipe (10) which are arranged on the aeration tank, wherein the water inlet pipe (8) is communicated with a sludge return pipe (9), and the sewage treatment device is characterized in that a shaking heating mechanism (3) for heating sewage is arranged on the aeration tank (1);

the shaking heating mechanism (3) comprises a supporting frame (37) which is slidably arranged in the aeration tank (1), a plurality of heating elements (38) are arranged on the supporting frame (37), a push-pull rod (36) is fixed on the supporting frame (37), a connecting rod (35) is rotatably arranged on the push-pull rod (36), a deflection rod (34) is rotatably arranged at the other end of the connecting rod (35), a rotating plate (33) is fixed on the deflection rod (34), a rotating shaft (32) is fixed at the other end of the rotating plate (33), a supporting frame (31) is fixed on the aeration tank (1), and a motor (39) for driving the rotating shaft (32) to rotate is arranged on the supporting frame (31);

the device is characterized in that the shaking heating mechanism (3) is provided with a scraping mechanism (5) for scraping sludge attached to the heating member (38), and a tensioning mechanism (4) for transmission is arranged between the scraping mechanism (5) and the shaking heating mechanism (3).

2. The sewage treatment device at low temperature and high altitude according to claim 1, wherein the supporting frame (37) comprises a first supporting rod (371) and a second supporting rod (372), an engaging rod (373) for improving stability is fixed between the first supporting rod (371) and the second supporting rod (372), and the push-pull rod (36) is fixed on the engaging rod (373).

3. The sewage treatment device at low temperature and high altitude as claimed in claim 2, wherein the heating element (38) comprises an electric heating rod (381) installed on a first support rod (371), a sealing connection sleeve (383) is fixed on the first support rod (371) corresponding to the position of the electric heating rod (381), and a sheath cylinder (382) is threadedly installed on the sealing connection sleeve (383).

4. The sewage treatment device at low temperature and high altitude as claimed in claim 2, wherein the scraping mechanism (5) comprises two vertical rods (51) fixed on a first support rod (371) and a second support rod (372), a reciprocating screw (52) is rotatably mounted on the vertical rods (51), a moving block (54) is rotatably mounted on the reciprocating screw (52), a sliding column (53) fixed with the vertical rods (51) is slidably mounted on the moving block (54), a vertical rod (55) is fixed on the moving block (54), a cross rod (56) is fixed at the other end of the vertical rod (55), a plurality of connecting plates (57) with through holes are fixed at the other end of the cross rod (56), and a detachable cleaning brush (58) is arranged on the connecting plates (57).

5. The sewage treatment device at low temperature and high altitude according to claim 4, wherein the cleaning brush member (58) comprises a first half-ring brush (581) and a second half-ring brush (583), a plurality of elastic clamping rods (582) are fixed on the first half-ring brush (581), and clamping holes (584) clamped with the elastic clamping rods (582) are formed in the second half-ring brush (583).

6. The sewage treatment device at low temperature and high altitude according to claim 4, wherein the tensioning mechanism (4) comprises a support plate (47) fixed on the aeration tank (1), a first belt wheel (41) sleeved on the rotating shaft (32), and a second belt wheel (42) sleeved on the reciprocating screw (52), a moving rod (46) is slidably mounted on the support plate (47), a limiting plate (49) is fixed at the bottom end of the moving rod (46), a spring (48) is sleeved on the moving rod (46), the spring (48) is fixed between the support plate (47) and the limiting plate (49), a circular shaft (45) is rotatably mounted at the top end of the moving rod (46), a third belt wheel (43) is sleeved on the circular shaft (45), and a transmission belt (44) is sleeved between the third belt wheel (43), the second belt wheel (42) and the first belt wheel (41).

7. The sewage treatment device at low temperature and high altitude according to claim 3, wherein a position of the second support rod (372) corresponding to the sheath cylinder (382) is provided with a notch, a positioning mechanism (7) for preventing the sheath cylinder (382) from deflecting is arranged in the notch, the positioning mechanism (7) comprises an elastic telescopic rod (71) fixed in the notch, a pulling plate (73) is fixed on a telescopic part of the elastic telescopic rod (71), a strip-shaped hole (74) is formed in the pulling plate (73), an elastic plate (75) is fixed in the notch, a hanging plate (76) for clamping the pulling plate (73) is fixed on the elastic plate (75), and a positioning hole (72) inserted into the elastic telescopic rod (71) is formed in the sheath cylinder (382).

8. The sewage treatment device at low temperature and high altitude according to claim 4, wherein the moving block (54) is provided with a throwing mechanism (6), the throwing mechanism (6) comprises a storage tank (61) which is arranged on the moving block (54) and used for storing a flocculating agent, the bottom ends of the storage tank (61) are symmetrically communicated and provided with a throwing pipe (62), the vertical section of the throwing pipe (62) is provided with an electromagnetic valve (64), and the inclined section of the throwing pipe (62) is communicated with a plurality of distributing pipes (63).

9. The sewage treatment device at low temperature and high altitude according to claim 1, wherein the aeration tank (1) is provided with an aeration mechanism (2), the aeration mechanism (2) comprises a plurality of branch pipes (23) fixed in the aeration tank (1), the branch pipes (23) are communicated with each other and provided with aeration heads (24), the branch pipes (23) are communicated with each other and provided with air pipes (22), and one ends of the air pipes (22) far away from the branch pipes (23) extend out of the aeration tank (1) and are communicated with each other and provided with aeration fans (21).

10. A sewage treatment method of a low-temperature high-altitude sewage treatment device is characterized by comprising the following steps:

1) Sewage flows into the aeration tank (1) from the water inlet pipe (8), a flocculating agent is put into the aeration tank (1) by controlling the throwing mechanism (6), and then the aeration mechanism (2) is controlled to carry out aeration treatment on the sewage;

2) In the sewage aeration treatment, the shaking heating mechanism (3) is controlled to heat the sewage, and simultaneously the scraping mechanism (5) is used for scraping the sludge on the heating element (38);

3) The sewage after aeration treatment flows out from the water outlet pipe (10), and the flowing-out part of activated sludge can be returned to the aeration tank (1) from the sludge return pipe (9).