CN111362382A

CN111362382A - Mixing station sewage treatment system

Info

Publication number: CN111362382A
Application number: CN202010203868.7A
Authority: CN
Inventors: 刘毅; 林菲
Original assignee: Shaanxi Rongda Tiansheng Concrete Co ltd
Current assignee: Shaanxi Rongda Tiansheng Concrete Co ltd
Priority date: 2020-01-20
Filing date: 2020-03-21
Publication date: 2020-07-03
Anticipated expiration: 2040-03-21
Also published as: CN111362382B

Abstract

The invention discloses a mixing station sewage treatment system, which relates to the technical field of mud-water separation, and the technical scheme is characterized in that: including effluent water sump, flocculation basin and the plate and frame filter press that communicates in proper order, the bottom intercommunication in flocculation basin has the slush pump, and the output of slush pump communicates to the import setting of plate and frame filter press, the flocculation basin includes the water tank, and the intercommunication has the inlet pipe on the water tank, and water tank bottom intercommunication has the drain pipe, and the drain pipe communicates to the slush pump, and the water tank upper end still is provided with the installation department, still is provided with agitating unit in the water tank, and agitating unit still is provided with driving motor on the installation department including setting up main stirring spare in the water tank, assisting the stirring spare. Through the main stirring piece and the cooperation stirring of assisting the stirring piece for the effect of stirring is better, thereby makes the stirring mixing efficiency of mud and flocculating agent and lime higher.

Description

Mixing station sewage treatment system

Technical Field

The invention relates to the technical field of mud-water separation, in particular to a mixing station sewage treatment system.

Background

Due to the requirement of environmental protection, the sewage of the mixing plant is usually subjected to sludge-water separation treatment.

The traditional mud-water separation system generally comprises a flocculation tank, a mud filter-pressing device and a drainage device. The flocculation tank is a dosing and stirring treatment station in the mud separation. Generally, mud is firstly screened, impurities such as sand and stones in the mud are separated, the screened mud is guided into a flocculation tank, then a flocculating agent and lime are added into the flocculation tank, and the mud is fully mixed with the flocculating agent and the lime through manual stirring, so that the mud forms a mud-water separation layering effect, but the overall stirring efficiency is low through manual stirring, the time is long, and the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a mixing station sewage treatment system which has the advantage of higher mixing efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

a stirring station sewage treatment system comprises a sewage tank, a flocculation tank and a plate-and-frame filter press which are sequentially communicated, wherein the bottom of the flocculation tank is communicated with a mud pump, the output end of the mud pump is communicated to the inlet of the plate-and-frame filter press, the flocculation tank comprises a water tank, the water tank is communicated with a feeding pipe, the bottom of the water tank is communicated with a liquid outlet pipe, and the liquid outlet pipe is communicated with the mud pump; the upper end of the water tank is also provided with an installation part, the water tank is also internally provided with a stirring device, the stirring device comprises a main stirring part and an auxiliary stirring part which are arranged in the water tank, and the main stirring part comprises a main stirring shaft which is rotatably connected with the installation part and is vertically arranged and a main stirring blade which is arranged on the main stirring shaft; the auxiliary stirring piece comprises an auxiliary stirring shaft which is obliquely arranged through the main stirring shaft and is rotationally connected with the main stirring shaft, and an auxiliary stirring blade arranged on the auxiliary stirring shaft; the main stirring shaft is also fixedly connected with a connecting plate along the radial direction, the auxiliary stirring shaft is correspondingly and rotatably arranged through the connecting plate, a gear is coaxially arranged at the upper end of the auxiliary stirring shaft, a gear ring meshed with the gear is also fixed on the lower end surface of the mounting part, and the gear ring and the main stirring shaft are coaxially arranged; the installation part is also provided with a driving motor for driving the main stirring shaft to rotate.

Through the technical scheme, sewage is firstly precipitated in the sewage tank, then the sewage after the upper layer precipitation is pumped into the flocculation tank through the suction pump, and then the drooping slurry water after precipitation separation is pumped to the plate-and-frame filter press through the slurry pump for separation. When sewage is in the flocculation basin, in adding flocculating agent and lime into the water tank earlier, then drive main (mixing) shaft through driving motor and rotate and drive main stirring leaf and stir, and can also drive when main (mixing) shaft rotates and assist the (mixing) shaft and overturn along main (mixing) shaft's axis, when assisting the (mixing) shaft and overturn along main (mixing) shaft, assist epaxial gear of stirring and can rotate with the ring gear meshing, thereby make and assist the (mixing) shaft and can also rotate along the axis of self when rotating along main (mixing) shaft, thereby it further stirs to drive and assist the stirring leaf. Usually the number of teeth of ring gear is five six times of gear to make the auxiliary stirring shaft rotate a week along main (mixing) shaft, self rotation can be more circle. Through the main stirring piece and the cooperation stirring of assisting the stirring piece for the effect of stirring is better, thereby makes the stirring mixing efficiency of mud and flocculating agent and lime higher.

Furthermore, the lower end of the main stirring shaft is rotatably connected with the bottom of the water tank.

Through above-mentioned technical scheme, main (mixing) shaft rotates with the water tank bottom and is connected to make the rotation of main (mixing) shaft more stable, thereby make agitating unit's operation more stable.

Furthermore, a plurality of main stirring blades are arranged, and the main stirring shafts are spirally distributed along the axial direction of the main stirring shaft; every main stirring leaf is platelike and sets up, just the face of main stirring leaf is the slope setting for the axis of main (mixing) shaft, and the lower terminal surface that is located the main stirring leaf of bottommost is contradicted in the up end setting of water tank bottom.

Through above-mentioned technical scheme, contradict in the water tank bottom through the lower terminal surface of main stirring leaf, when main (mixing) shaft drives main stirring leaf and rotates and stir, lie in the main stirring leaf of lower extreme and can also strike off the water tank bottom, reduce in your muddy water the part pile up and lead to mixing uneven condition in the water tank bottom to make the effect that the stirring was mixed better.

Further, assist the stirring leaf and be provided with two, and two are assisted the stirring leaf and set up respectively in main (mixing) shaft along assisting the axial both sides of (mixing) shaft, assist the stirring leaf and be the helical blade setting, and two revolve to opposite settings of assisting the stirring leaf.

Through the technical scheme, when the main stirring shaft rotates, the auxiliary stirring shaft can drive the auxiliary stirring blade to rotate along the axis of the auxiliary stirring shaft, and the rotation speed of the auxiliary stirring shaft is greater than the overturning speed of the auxiliary stirring shaft along the main stirring shaft. The auxiliary stirring blade is spirally arranged, so that the auxiliary stirring blade can drive muddy water to flow along the axial direction of the auxiliary stirring shaft while stirring, the auxiliary stirring blade can drive the muddy water in the axial direction of the auxiliary stirring shaft to be close to each other, the muddy water in the middle position flows out to two sides, and then the muddy water flowing to two sides corresponds to supplement the upper end and the lower end of the auxiliary stirring shaft, so that the flow direction of the muddy water in the water tank is formed, and the stirring effect is better.

Further, the water tank is cylindric setting, just the water tank sets up with main (mixing) shaft is coaxial, and the supplementary stirring leaf that is located the lower extreme keeps away from one side of assisting the (mixing) shaft to the distance of assisting the (mixing) shaft diminish the setting from bottom to top subassembly, and the supplementary stirring leaf that is located the lower extreme is close to the setting of water tank inside wall.

Through above-mentioned technical scheme, the water tank is cylindric setting, and the inner wall that assists stirring leaf lower extreme to be close to the water tank sets up, has reduced and has stirred the dead angle for agitating unit's the scope of stirring is more even.

Further, assist the (mixing) shaft including setting up in the installation axle at supplementary (mixing) shaft axial both ends, coaxial coupling in the connecting axle between two installation axles, the connecting axle corresponds to rotate to be connected on main (mixing) shaft, the caulking groove has all been seted up along its axial both ends to the connecting axle, and two epaxial correspondences of installation are provided with the embedding the panel of caulking groove, still correspond on the connecting axle to wear to be equipped with simultaneously to pass the fastening bolt of panel.

Through above-mentioned technical scheme, assist the (mixing) shaft and realize dismantling the connection for holistic installation is more convenient, and the gomphosis of caulking groove and panel can make the connection of connecting axle and installation axle more stable in addition.

Furthermore, each one end that the installation axle is close to the connecting axle still is provided with the position ring cover, the position ring cover is used for the lateral wall of cover establishing the connecting axle to fix a position.

Through above-mentioned technical scheme, set up the position ring cover, the position ring cover can conflict the lateral wall of connecting axle and further fix a position to the structure that makes the supplementary (mixing) shaft is more stable.

Further, one side that main (mixing) shaft was kept away from to the connecting plate is the slope and buckles and form bending portion, and the kink perpendicular with assist the axis setting of (mixing) shaft, it is provided with two spacing rings to assist to correspond on the (mixing) shaft, the spacing ring is contradicted respectively and is carried on spacingly along assisting the axial both ends of (mixing) shaft in the kink.

Through above-mentioned technical scheme, set up kink and spacing ring, the upper and lower both ends that the spacing ring can contradict the kink are fixed a position to the position that makes assisting the (mixing) shaft is more stable, thereby makes agitating unit's stirring effect more stable.

Further, still be provided with charge device on the water tank, charge device is close to the top setting of water tank, charge device includes that the level communicates in the pencil that advances of water tank lateral wall, rotates to connect in the feeding screw rod of advancing the pencil, communicate in the explosive box of advancing the pencil top and set up and keep away from water tank one end and be used for driving feeding screw rod pivoted driving piece in advancing the pencil, advance the pencil and set up in the setting of water tank inside wall towards the one end protrusion of water tank inner wall.

Through above-mentioned technical scheme, set up charge device, flocculating agent and lime mixture can be in the explosive box, when needs add the medicine, drive feed screw through the driving piece and rotate, add the water tank through feed screw with the mixture in, advance the setting of pencil protrusion water tank inner wall, can reduce the condition that the mixture adheres to the wall for the mixing of flocculating agent and lime and muddy water is more stable.

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

(1) the main stirring piece and the auxiliary stirring piece are matched for stirring, so that the stirring effect is better, and the stirring and mixing efficiency of the slurry, the flocculating agent and the lime is higher;

(2) the rotation directions of the two auxiliary stirring blades are opposite, so that the stirring and mixing effects are further enhanced, and the stirring effect is better;

(3) through setting up the position ring cover, the position ring cover can be contradicted the lateral wall of connecting axle and further fix a position to make the structure of assisting the (mixing) shaft more stable.

Drawings

FIG. 1 is an overall schematic view of an embodiment;

FIG. 2 is a schematic diagram of the structure of a flocculation tank of an embodiment;

FIG. 3 is a schematic cross-sectional view of a flocculation tank of an embodiment;

FIG. 4 is a schematic structural view of a stirring device according to an embodiment;

FIG. 5 is a schematic structural view of the auxiliary stirring member of the embodiment.

Reference numerals: 100. a sewage tank; 200. a flocculation tank; 300. a plate-and-frame filter press; 400. a slurry pump; 500. a suction pump; 1. a water tank; 2. a feed pipe; 3. a liquid outlet pipe; 4. an installation part; 5. a drive motor; 6. a stirring device; 61. a main stirring member; 611. a main stirring shaft; 612. a main stirring blade; 62. an auxiliary stirring member; 621. an auxiliary stirring shaft; 6211. installing a shaft; 6212. a connecting shaft; 622. auxiliary stirring blades; 7. a connecting plate; 8. a bending section; 9. a limiting ring; 10. a gear; 11. a ring gear; 12. caulking grooves; 13. a panel; 14. fastening a bolt; 15. a positioning ring sleeve; 16. a dosing device; 161. a medicine inlet pipe; 162. a feed screw; 163. a medicine storage box; 164. a drive member.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

Example (b):

a stirring station sewage treatment system is shown in figures 1 and 2 and comprises a sewage tank 100, a flocculation tank 200 and a plate-and-frame filter press 300 which are sequentially communicated, wherein the bottom of the flocculation tank 200 is communicated with a mud pump 400, and the output end of the mud pump 400 is communicated to the inlet of the plate-and-frame filter press 300. The flocculation tank 200 comprises a water tank 1, and the water tank 1 is arranged in a cylindrical shape. The water tank 1 may be a water tank or a movable tank. The side wall of the water tank 1 is communicated with a feeding pipe 2, the feeding pipe 2 is used for communicating with the sewage tank 100, and slurry in the sewage tank 100 can be conveyed into the water tank 1 through the suction pump 500. The bottom of the water tank 1 is communicated with a liquid outlet pipe 3, the liquid outlet pipe 3 is communicated to the side wall of the water tank 1, the liquid outlet pipe 3 is used for being communicated to a standing box, and muddy water can be layered and precipitated through the standing box. The liquid outlet pipe 3 is connected to the slurry pump 400, and a control valve (not shown) is usually further disposed on the liquid outlet pipe 3 to control the opening and closing of the liquid outlet pipe 3.

As shown in fig. 2 and 3, a mounting portion 4 is further provided on the upper end of the water tank 1, and the mounting portion 4 is provided in a door shape. The upper end surface of the mounting part 4 is also provided with a driving motor 5. The water tank 1 is also provided with a stirring device 6, and the stirring device 6 comprises a main stirring part 61 and an auxiliary stirring part 62 which are arranged in the water tank 1. The main stirring member 61 includes a main stirring shaft 611 rotatably connected to the mounting portion 4 and vertically disposed, and a main stirring blade 612 disposed on the main stirring shaft 611. The axis of the main stirring shaft 611 is overlapped with the axis of the water tank 1, the upper end of the main stirring shaft 611 is connected with the driving motor 5, and the lower end of the main stirring shaft 611 is rotatably connected with the bottom of the water tank 1. The main stirring shaft 611 is spirally distributed along the axial direction of the main stirring shaft 611. Each main stirring vane 612 is disposed in a plate shape, the plate surface of the main stirring vane 612 is disposed in an inclined manner with respect to the axis of the main stirring shaft 611, and the lower end surface of the main stirring vane 612 located at the lowermost end is disposed in contact with the upper end surface of the bottom of the water tank 1. When driving motor 5 drove main (mixing) shaft 611 and rotates, be located the main stirring leaf 612 of bottommost and can also strike off water tank 1 bottom, reduce your muddy water part and pile up in water tank 1 bottom and lead to mixing uneven condition to make the effect of stirring mixture better.

As shown in fig. 3 and 4, the main stirring shaft 611 is further fixedly connected with a connecting plate 7 along the radial direction, and one side of the connecting plate 7 away from the main stirring shaft 611 is inclined downwards and bent to form a bent portion 8. The auxiliary stirring member 62 includes an auxiliary stirring shaft 621 obliquely passing through the main stirring shaft 611 and rotatably connected to the main stirring shaft 611, and an auxiliary stirring blade 622 disposed on the auxiliary stirring shaft 621. The axis of the auxiliary stirring shaft 621 is perpendicular to the bending part 8, and the auxiliary stirring shaft 621 correspondingly penetrates through the bending part 8 of the connecting plate 7 and is rotatably connected with the connecting plate 7. Two limiting rings 9 are correspondingly arranged on the auxiliary stirring shaft 621, and the limiting rings 9 are screwed and fixed on the auxiliary stirring shaft 621 through bolts. The limiting rings 9 are respectively abutted against the bending parts 8 to limit the axial two ends of the auxiliary stirring shaft 621. The upper end of the auxiliary stirring shaft 621 is also coaxially provided with a gear 10, the lower end face of the mounting portion 4 is also fixed with a gear ring 11 engaged with the gear 10, and a tooth portion of the gear ring 11 may be arranged outside the gear ring 11 or inside the gear ring 11. The tooth portion of the ring gear 11 in this embodiment is located outside the ring gear 11. Ring gear 11 is disposed coaxially with main stirring shaft 611, and the number of teeth of ring gear 11 is greater than that of gear 10, and typically the number of teeth of ring gear 11 is five-six times that of gear 10.

As shown in fig. 3 and 5, the auxiliary stirring shaft 621 includes mounting shafts 6211 provided at both ends of the auxiliary stirring shaft 621 in the axial direction, and a connecting shaft 6212 coaxially connected between the two mounting shafts 6211. The connecting shaft 6212 is correspondingly rotatably connected to the main stirring shaft 611, the connecting shaft 6212 has two caulking grooves 12 formed at both ends thereof in the axial direction, and the caulking grooves 12 are arranged to penetrate through the connecting shaft 6212 in the radial direction of the connecting shaft 6212. The two mounting shafts 6211 are respectively provided with panels 13 inserted into the slots 12, and the connecting shaft 6212 is correspondingly provided with fastening bolts 14 passing through the panels 13. Each mounting shaft 6211 is further provided with a positioning ring sleeve 15 at an end thereof adjacent to the connecting shaft 6212, and the positioning ring sleeve 15 is used for being sleeved on an outer side wall of the connecting shaft 6212 for positioning. The positioning ring sleeve 15 can abut against the outer side wall of the connecting shaft 6212 for further positioning, so that the structure of the auxiliary stirring shaft 621 is more stable.

The auxiliary stirring blades 622 are disposed in two, and the two auxiliary stirring blades 622 are disposed on two axial sides of the main stirring shaft 611 along the auxiliary stirring shaft 621 respectively, and the two auxiliary stirring blades 622 are correspondingly disposed on two mounting shafts 6211. The two auxiliary stirring blades 622 are arranged in a spiral blade manner, and the rotation directions of the two auxiliary stirring blades 622 are opposite. The distance from one side of the auxiliary stirring blade 622 located at the lower end far away from the auxiliary stirring shaft 621 to the auxiliary stirring shaft 621 is reduced from bottom to top, and the auxiliary stirring blade 622 located at the lower end is arranged close to the inner side wall of the water tank 1.

When main (mixing) shaft 611 rotates, assist (mixing) shaft 621 can drive and assist stirring leaf 622 and rotate along assisting (mixing) shaft 621 axis, and assist (mixing) shaft 621 rotation speed be greater than assist (mixing) shaft 621 along the upset speed of main (mixing) shaft 611. It is the spiral setting to assist stirring leaf 622, make and assist stirring leaf 622 can also drive muddy water along assisting the axial flow of (mixing) shaft 621 when the stirring, assist stirring leaf 622 usually and can drive and assist the axial muddy water of (mixing) shaft 621 and be close to each other, thereby make the muddy water of intermediate position flow to assisting the radial both sides of (mixing) shaft 621, then the muddy water that flows to both sides has the correspondence to supply to assisting the upper and lower both ends department of (mixing) shaft 621, form the muddy water flow direction in the water tank 1, the stirring that combines main (mixing) shaft 611 and the upset of assisting (mixing) shaft 621 along main (mixing) shaft 611, thereby make.

As shown in fig. 2 and 3, a chemical adding device 16 is further disposed on the water tank 1, and the chemical adding device 16 is disposed near the top of the water tank 1. The medicine adding device 16 comprises a medicine inlet pipe 161 horizontally communicated with the side wall of the water tank 1, a feeding screw 162 rotatably connected in the medicine inlet pipe 161, a medicine storage box 163 communicated above the medicine inlet pipe 161, and a driving member 164 arranged at one end of the medicine inlet pipe 161 far away from the water tank 1. The one end protrusion in water tank 1 inside wall setting of advancing the pencil 161 towards water tank 1 inner wall, and advance the pencil 161 and can not disturb the stirring of agitating unit 6. The driving member 164 is a motor, and the driving member 164 is connected to the feeding screw 162 for driving the feeding screw 162 to rotate for dosing. When dosing is required, the feed screw 162 is rotated by the driving member 164, and the mixture is fed into the water tank 1 through the feed screw 162. The arrangement that the medicine inlet pipe 161 protrudes the inner wall of the water tank 1 can reduce the condition that the mixture adheres to the wall.

The working principle of the embodiment is as follows:

when adopting above-mentioned muddy water medicine stirring system, at first sewage deposits in effluent water sump 100, then pass through the sewage of suction pump 500 with the upper strata and add into water tank 1 through inlet pipe 2, then correspond the liquid medicine through charge device 16 and add into water tank 1 in, then start driving motor 5, drive main (mixing) shaft 611 through driving motor 5 and rotate and drive main stirring leaf 612 and stir, and can also drive when main (mixing) shaft 611 rotates and assist (mixing) shaft 621 and overturn along the axis of main (mixing) shaft 611, when assisting (mixing) shaft 621 and overturn along main (mixing) shaft 611, gear 10 on the assistance (mixing) shaft 621 can rotate with ring gear 11 meshing, thereby make and assist (mixing) shaft 621 can also rotate along the axis of self when rotating along main (mixing) shaft 611, thereby it further stirs to drive and assist (mixing) leaf 622. After the sewage in the flocculation tank 200 is settled and layered, the mud pump 400 can pump the mud and water settled at the bottom to the plate-and-frame filter press 300 for mud and water separation, so as to treat the sewage.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a stirring station sewage treatment system, includes effluent water sump (100), flocculation basin (200) and plate and frame filter press (300) that communicate in proper order, the bottom intercommunication of flocculation basin (200) has slush pump (400), and the output intercommunication of slush pump (400) communicates to the import setting of plate and frame filter press (300), flocculation basin (200) include water tank (1), its characterized in that: the water tank (1) is communicated with a feeding pipe (2), the bottom of the water tank (1) is communicated with a liquid outlet pipe (3), and the liquid outlet pipe (3) is communicated with a slurry pump (400); the water tank is characterized in that the upper end of the water tank (1) is also provided with an installation part (4), a stirring device (6) is also arranged in the water tank (1), the stirring device (6) comprises a main stirring part (61) and an auxiliary stirring part (62) which are arranged in the water tank (1), the main stirring part (61) comprises a main stirring shaft (611) which is rotatably connected to the installation part (4) and is vertically arranged, and a main stirring blade (612) is arranged on the main stirring shaft (611); the auxiliary stirring piece (62) comprises an auxiliary stirring shaft (621) which is obliquely arranged through the main stirring shaft (611) and is rotationally connected with the main stirring shaft (611), and an auxiliary stirring blade (622) arranged on the auxiliary stirring shaft (621);

the main stirring shaft (611) is also fixedly connected with a connecting plate (7) along the radial direction, the auxiliary stirring shaft (621) is correspondingly and rotatably arranged to penetrate through the connecting plate (7), the upper end of the auxiliary stirring shaft (621) is also coaxially provided with a gear (10), the lower end face of the mounting part (4) is also fixedly provided with a gear ring (11) meshed with the gear (10), and the gear ring (11) and the main stirring shaft (611) are coaxially arranged;

the mounting part (4) is also provided with a driving motor (5) for driving the main stirring shaft (611) to rotate.

2. The mixing station wastewater treatment system according to claim 1, wherein: the lower end of the main stirring shaft (611) is rotatably connected with the bottom of the water tank (1).

3. The mixing station wastewater treatment system according to claim 2, wherein: the main stirring blades (612) are arranged in a plurality, and the main stirring shaft (611) is spirally distributed along the axial direction of the main stirring shaft (611); each main stirring blade (612) is arranged in a plate shape, the plate surface of each main stirring blade (612) is obliquely arranged relative to the axis of the main stirring shaft (611), and the lower end surface of the main stirring blade (612) positioned at the lowest end is arranged in a mode of abutting against the upper end surface of the bottom of the water tank (1).

4. The mixing station wastewater treatment system according to claim 1, wherein: assist stirring leaf (622) to be provided with two, and two assist stirring leaf (622) to set up respectively in main (mixing) shaft (611) along assisting (mixing) shaft (621) axial both sides, assist stirring leaf (622) and be the helical blade setting, and two revolve to set up on the contrary of assisting stirring leaf (622).

5. The mixing station wastewater treatment system according to claim 4, wherein: the water tank (1) is cylindric setting, just water tank (1) and main (mixing) shaft (611) coaxial setting, and the supplementary stirring leaf (622) that is located the lower extreme keep away from one side of assisting (mixing) shaft (621) and the distance of assisting (mixing) shaft (621) diminishes the setting from bottom to top subassembly, and is located supplementary stirring leaf (622) of lower extreme and is close to water tank (1) inside wall setting.

6. The mixing station wastewater treatment system according to claim 5, wherein: the auxiliary stirring shaft (621) comprises mounting shafts (6211) arranged at two axial ends of the auxiliary stirring shaft (621) and a connecting shaft (6212) coaxially connected between the two mounting shafts (6211), the connecting shaft (6212) is correspondingly and rotatably connected onto the main stirring shaft (611), caulking grooves (12) are formed in the connecting shaft (6212) along two axial ends of the connecting shaft, two mounting shafts (6211) are correspondingly provided with embedding panels (13) of the caulking grooves (12), and the connecting shaft (6212) is correspondingly provided with fastening bolts (14) penetrating through the panels (13) at the same time.

7. The mixing station wastewater treatment system according to claim 6, wherein: each mounting shaft (6211) is further provided with a positioning ring sleeve (15) at one end close to the connecting shaft (6212), and the positioning ring sleeve (15) is used for being sleeved on the outer side wall of the connecting shaft (6212) to be positioned.

8. The mixing station wastewater treatment system according to claim 1, wherein: one side that main (mixing) shaft (611) was kept away from in connecting plate (7) is slope bending type and forms kink (8), and kink (8) perpendicular with assist the axis setting of (mixing) shaft (621), assist and correspond on (mixing) shaft (621) and be provided with two spacing rings (9), spacing ring (9) are contradicted respectively and are carried on spacingly in kink (8) along assisting (mixing) shaft (621) axial both ends.

9. The mixing station wastewater treatment system according to claim 1, wherein: still be provided with charge device (16) on water tank (1), charge device (16) are close to the top setting of water tank (1), charge device (16) including the level communicate in advancing pencil (161), rotating the feed screw (162) of connecting in advancing pencil (161) of water tank (1) lateral wall, communicate in medicine storage box (163) of advancing pencil (161) top and set up and keep away from water tank (1) one end in advancing pencil (161) and be used for driving feed screw (162) pivoted driving piece (164), advance pencil (161) towards the one end protrusion of water tank (1) inner wall in water tank (1) inside wall setting.