CN220878081U - Concrete wastewater treatment system - Google Patents

Abstract

The application relates to the field of wastewater treatment, in particular to a concrete wastewater treatment system, which comprises a water collecting tank, wherein a first baffle plate and a second baffle plate are arranged in the water collecting tank at intervals, the water collecting tank is sequentially divided into a sand filtering tank, a sedimentation tank and a clarification tank which are mutually independent by the first baffle plate and the second baffle plate, a first communication port and a second communication port for circulating wastewater are respectively formed in the first baffle plate and the second baffle plate, a filter plate for primarily filtering massive sand and stones and a cleaning device for cleaning the sand and stones accumulated on the filter plate are arranged in the sand filtering tank, a filtering device for further filtering and a cleaning device for cleaning the sand and stones deposited at the bottom of the sedimentation tank are arranged in the sedimentation tank, the second filtering device comprises a filter screen, the first communication port is positioned at one side of the filter screen far away from the ground, and the aperture of the filter plate is larger than the aperture of the filter screen. The application has the effects of fully recycling the sand stone and water resources in the concrete wastewater and reducing the resource waste.

Description

Concrete wastewater treatment system

Technical Field

The application relates to the field of wastewater treatment, in particular to a concrete wastewater treatment system.

Background

Along with the rapid development of the construction industry at present, the number of concrete mixing stations is increased and the generated concrete wastewater is increased, if the generated concrete wastewater is directly discharged, the generated concrete wastewater not only causes great pollution to the environment, but also contains a large amount of available sand and water, and the direct discharge can cause resource waste because the concrete wastewater is generally derived from the residual water of the mixing stations, the wastewater generated by flushing equipment sites or the water sprayed by spraying dust-settling equipment.

Disclosure of utility model

In order to fully recycle sand stone and water resources in concrete wastewater and reduce resource waste, the application provides a concrete wastewater treatment system.

The application provides a concrete wastewater treatment system which adopts the following technical scheme:

The utility model provides a concrete wastewater treatment system, includes the catch basin, the inside interval of catch basin is provided with first baffle and second baffle, and first baffle and second baffle will the catch basin separates into mutually independent filter sand pond, sedimentation tank and clarification tank in proper order, first baffle with first intercommunication mouth and the second intercommunication mouth that supply the waste water circulation have been seted up respectively on the second baffle, be provided with in the filter sand pond and be used for the clearance to pile up the cleaning device of grit on the filter is in be provided with in the sedimentation tank and be used for further filterable filter equipment and be used for cleaing away the deposit in the cleaning device of sedimentation tank bottom deposit the grit, second filter equipment includes the filter screen, first intercommunication mouth is located the one side that the ground was kept away from to the filter screen, the aperture of filter is greater than the aperture of filter screen.

Through adopting above-mentioned technical scheme, during the use, the staff lets in concrete waste water in the sand filtering pond, through the filter with the separation of massive grit, waste water enters into the sedimentation tank through first communication port, further filter the back through the filter screen, grit content in the waste water further reduces, enter into the clarification tank through the second communication port at last, after stewing in the clarification tank, waste water in the clarification tank can carry out the reutilization, after having handled waste water, staff's operation cleaning device clear up the grit of piling up on the filter, operation cleaning device clear up the grit of sedimentation tank bottom, then collect the grit of cleaning up, retrieve.

Optionally, the cleaning device includes fixed connection the installation piece on the sand filtering pond inner wall, set up the support piece that the installation piece was kept away from ground one side and install the vibrating motor that the filter is close to ground one side, the filter slope sets up.

Through adopting above-mentioned technical scheme, during the use, the staff starts vibrating motor, and the grit of piling up on the filter slides to filter one side under vibrating motor's effect.

Optionally, the support piece includes fixed connection support section of thick bamboo in the installation piece is kept away from ground one side, cover establish support column in the support section of thick bamboo and fixed connection support section of thick bamboo with the spring between the support column.

Through adopting above-mentioned technical scheme, during the use, owing to the setting of spring for when vibrating motor vibrates, the support column slides in the support section of thick bamboo, thereby has strengthened cleaning device's stability.

Optionally, offer and supply grit exhaust discharge gate on the sand filtering pond lateral wall, it has first movable plate to articulate on the sand filtering pond lateral wall, the movable plate can with the discharge gate shutoff, first movable plate with be provided with the mounting that is used for sealedly between the sand filtering pond lateral wall.

Through adopting above-mentioned technical scheme, during the use, staff operation mounting makes first movable plate can rotate around its articulated shaft to open the discharge gate, pile up the grit on the filter and pass through the discharge gate and discharge to the external world.

Optionally, the filtering device further comprises a filtering frame and a lifting assembly for driving the filtering frame to lift, and the filtering screen is fixedly connected to one side, close to the ground, of the filtering frame.

Through adopting above-mentioned technical scheme, during the use, the staff operation lifting unit for the filter frame removes to the sedimentation tank top, thereby makes things convenient for the staff to take the filter frame and collects the clearance to the grit in the filter frame.

Optionally, the lifting assembly is in including being used for bearing the carriage of filter frame, fixed connection be in the carriage is close to the connecting block of second baffle one side, install the second baffle is kept away from the driving motor that ground one side was used for providing power and fixed connection is in screw rod on the driving motor output shaft, connecting block threaded connection is in on the screw rod, offered in the second baffle and supplied the mounting groove of screw rod installation, the mounting groove be close to filter screen one side with sedimentation tank intercommunication supplies the connecting block slides.

Through adopting above-mentioned technical scheme, during the use, the staff starts driving motor, and driving motor output shaft is rotatory thereby drives the screw rod rotation for threaded connection is at the connecting block on the screw rod removal in vertical direction, thereby makes the filter frame remove to the sedimentation tank top.

Optionally, the cleaning device includes fixed connection promotion cylinder and fixed connection on the sedimentation tank lateral wall promote cylinder piston rod and keep away from the push pedal of promotion cylinder one end, promote the cylinder piston rod and wear to locate the sedimentation tank lateral wall, the push pedal is close to ground one side butt sedimentation tank bottom.

Through adopting above-mentioned technical scheme, during the use, the staff starts the promotion cylinder, and the push pedal removes under the drive of promotion cylinder piston rod to promote one side with the grit of deposit in the sedimentation tank bottom.

Optionally, the slag notch that supplies the push pedal passed has been seted up to sedimentation tank one side, sedimentation tank one side articulates has and is used for the shutoff the second movable plate of slag notch, the second movable plate with be provided with between the sedimentation tank lateral wall and be used for fixing the shutoff piece of second movable plate position.

Through adopting above-mentioned technical scheme, during the use, the shutoff piece is operated to the staff for thereby the second movable plate can be opened the slag notch around its articulated shaft rotation, and the push pedal is with the grit ejecting through the slag notch.

Optionally, the sedimentation tank is inside to be provided with the supporting disk, install the supporting disk is close to the water pipe and the fixed connection of sedimentation tank lateral wall one side the supporting disk is kept away from the spray pipe of water pipe one side, the supporting disk with the inside cavity of spray pipe, the water pipe with the supporting disk intercommunication, the interval is equipped with a plurality of delivery ports on the spray pipe.

Through adopting above-mentioned technical scheme, during the use, the staff will lead to water pipe and external water source intercommunication, rivers get into the supporting disk through leading to water pipe to in flowing into the spray pipe from the supporting disk, finally flow out from the delivery port, wash sedimentation tank inner wall.

Optionally, a water pumping device is arranged on one side of the clarification tank, and the water pumping device comprises a water pumping pipe extending into the clarification tank, a water pump communicated with the water pumping pipe and a valve arranged on the water pumping pipe.

Through adopting above-mentioned technical scheme, during the use, the staff opens the valve, and the water in the clarification tank is through the extraction of water pump to the external world, carries out the reutilization.

In summary, the present application includes at least one of the following beneficial technical effects:

1. According to the application, the cleaning device is arranged in the sand filtering pool, so that a worker can clean sand and stone piled on the filter plate by starting the vibrating motor, the sand and stone can slide to one lower side of the filter plate, the discharge hole is formed in the side wall of the sand filtering pool, the first movable plate is arranged on the side wall of the sand filtering pool to seal the discharge hole, when the cleaning device is used for cleaning, the discharge hole can be opened, the sand and stone can slide to the outside, and meanwhile, the storage box for collecting the sand and stone is arranged below the discharge hole, so that the sand and stone can be automatically collected;

2. According to the application, the lifting assembly is arranged in the sedimentation tank, so that a worker can collect the sand and stone in the filter frame more conveniently, and meanwhile, by arranging the cleaning device, the worker can recover the sand and stone deposited at the bottom of the sedimentation tank after the wastewater treatment is completed, and the recovery efficiency of the sand and stone in the concrete wastewater is improved;

3. According to the application, the cleaning device is arranged in the sedimentation tank, so that a worker can clean the inner wall of the sedimentation tank by controlling the cleaning device, sand and stone attached to the inner wall of the sedimentation tank can slide to the bottom of the sedimentation tank along water flow for recycling, the recycling efficiency of sand and stone in concrete wastewater is further increased, meanwhile, the supporting disc can rotate under the drive of the first motor by arranging the power piece, and the water flow track is arc-shaped when water flows out from the water outlet under the action of centrifugal force, so that the inner wall of the sedimentation tank is cleaned more uniformly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic view of the hidden sump side wall of the present application.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Reference numerals illustrate: 1. a water collecting tank; 11. a first separator; 111. a first communication port; 12. a second separator; 2. a sand filtering pool; 21. a filter plate; 22. a cleaning device; 221. a mounting block; 222. a vibration motor; 223. a support; 2231. a support cylinder; 2232. a support column; 23. a first moving plate; 24. a fixing member; 241. a first buckle; 242. a first docking slot; 25. a storage box; 3. a sedimentation tank; 31. a filtering device; 311. a filter screen; 312. a filter frame; 313. a lifting assembly; 3131. a support frame; 3132. a driving motor; 3133. a screw; 314. a handle; 32. a cleaning device; 321. a pushing cylinder; 33. a second moving plate; 34. a blocking member; 341. a second buckle; 342. a second docking slot; 35. a collection box; 4. a clarification tank; 5. a cleaning device; 51. a support plate; 52. a water pipe; 53. a water spray pipe; 54. a power member; 541. a first motor; 542. a mounting frame; 543. a first gear; 544. a connecting cylinder; 545. a second gear; 6. filtering the grid; 7. a water pumping device; 71. a water pumping pipe; 72. a water pump; 73. and (3) a valve.

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

The embodiment of the application discloses a concrete wastewater treatment system. Referring to fig. 1 and 2, the concrete wastewater treatment system comprises a water collecting tank 1, a first partition plate 11 and a second partition plate 12 are arranged in the water collecting tank 1 at intervals, the water collecting tank 1 is internally divided into three mutually independent closed spaces by the first partition plate 11 and the second partition plate 12, the three closed spaces are sequentially arranged as a sand filtering tank 2, a sedimentation tank 3 and a clarification tank 4, the bottoms of the sand filtering tank 2, the sedimentation tank 3 and the clarification tank 4 are sequentially lowered in a stepped shape, a first communication port 111 and a second communication port (not shown in the drawing) for wastewater circulation are respectively formed in the first partition plate 11 and the second partition plate 12, a filter plate 21 for primarily filtering massive sand and a cleaning device 22 for cleaning sand and stones accumulated on the filter plate 21 are arranged in the sand filtering tank 2, a filtering device 31 for further filtering and a cleaning device 32 for cleaning sand and stones deposited on the bottom of the sedimentation tank 3 are arranged in the sedimentation tank 3, and the filtering device 31 comprises a filter screen 311. Wherein the first communication port 111 is located at a side of the filtering device 31 away from the ground, and the aperture of the filtering plate 21 is larger than that of the filtering net 311.

When the concrete wastewater is discharged into the sand filtering pond 2, large sand and stones in the concrete wastewater are blocked by the filter plates 21 and are accumulated on the filter plates 21, smaller sand and stones flow into the sedimentation pond 3 along with the wastewater through the first communication ports 111, and the wastewater is further filtered through the filter screen 311 because the first communication ports 111 are positioned on one side of the filter device 31 away from the ground, at the moment, the smaller sand and stones in the wastewater are blocked by the filter screen 311, so that the sand and stone content in the wastewater is further reduced, then the wastewater enters the clarification pond 4 through the second communication ports, and the water base of the upper layer of the wastewater is basically free of impurities after the wastewater stands in the clarification pond 4, so that the wastewater can be used for cleaning a mixer truck and flushing scattered concrete on the ground for secondary use, and resources are saved; after the filtration is completed, the staff operates the cleaning device 22 to clean and collect the sand and stone piled on the filter plate 21, and simultaneously operates the cleaning device 32 to clean and collect the sand and stone deposited at the bottom of the sedimentation tank 3, and takes out and collects the sand and stone from the water collecting tank 1 for secondary recycling, so that the production cost is saved.

Referring to fig. 1 and 2, the cleaning apparatus 22 includes a mounting block 221 fixedly coupled to an inner wall of the sand filtering pond 2, a supporting member 223 disposed at a side of the mounting block 221 away from the ground, and a vibration motor 222 mounted at a side of the filter plate 21 close to the ground, and the filter plate 21 is fixedly coupled to a side of the supporting member 223 away from the mounting block 221. Wherein, the support pieces 223 are provided with four, two adjacent support pieces 223 are provided as a group, the heights of the two groups of support pieces 223 are different, and the filter plate 21 is obliquely arranged. It will be appreciated that the mounting block 221 is provided with four.

When the wastewater treatment is completed, the worker starts the vibration motor 222 so that the sand piled up on the filter plate 21 slides to the sand filtering pond 2 side along the filter plate 21, and the worker collects the sand.

Referring to fig. 2, in order to enhance stability of the cleaning device 22, the supporting member 223 includes a supporting cylinder 2231 fixedly connected to a side of the mounting block 221 remote from the ground, supporting columns 2232 sleeved in the supporting cylinder 2231, and springs (not shown) fixedly connected between the supporting cylinder 2231 and the supporting columns 2232, and the four supporting members 223 are respectively positioned at four corners of the filter plate 21.

When in use, after the worker starts the vibration motor 222, the support post 2232 slides along the vertical direction of the support cylinder 2231 under the action of the spring, so that the support cylinder 2231 does not vibrate severely under the buffering action of the spring, and the stability of the cleaning device 22 is improved.

In order to facilitate the collection and treatment of sand and stone, a discharge hole for sand and stone discharge is formed in the side wall of the sand filtering pond 2, a first movable plate 23 for sealing the discharge hole is hinged to the side wall of the sand filtering pond 2, the other end of the first movable plate 23 is connected with the side wall of the sand filtering pond 2 through a fixing piece 24, and the fixing piece 24 comprises a first buckle 241 fixedly connected to one end of the side wall of the sand filtering pond 2 and a first butt joint groove 242 fixedly connected to one end of the movable plate.

The sand filtering pond 2 is provided with a storage box 25 for collecting sand and stones on the side wall, one end of the storage box 25 is opened, and the opening end of the storage box 25 is positioned below the discharge hole.

During the use, the staff removes the buckle from the butt joint groove, rotates first movable plate 23 around its articulated shaft to open the discharge gate, the staff starts vibrating motor 222, makes the grit of piling up on filter 21 slide to containing box 25 through the discharge gate in, thereby accomplishes the collection to the grit.

Referring to fig. 1 and 2, in order to facilitate the collection of sand in the filter screen 311 by a worker, the filter device 31 further includes a filter frame 312 and a lifting assembly 313 for driving the filter frame 312 to lift, and the filter screen 311 is fixedly connected to a side of the filter frame 312 close to the ground.

The lifting assembly 313 includes a support frame 3131 for carrying the filter frame 312, a connection block (not shown) fixedly connected to a side of the support frame 3131 near the second partition 12, a driving motor 3132 fixedly connected to a side of the second partition 12 far from the ground for providing power, and a screw 3133 fixedly connected to an output shaft of the driving motor 3132. Wherein, the second baffle 12 is provided with a mounting groove for the installation of the screw 3133, the output shaft of the driving motor 3132 is positioned at one side facing the ground, one side of the mounting groove close to the filter screen 311 is communicated with the sedimentation tank 3 for the movement of the connecting block, and the connecting block is in threaded connection with the screw 3133.

When the sand-gravel filter device is used, a worker starts the driving motor 3132, the output shaft of the driving motor 3132 rotates to drive the screw 3133 to rotate, the connecting block which is in threaded connection with the screw 3133 moves in the vertical direction along the screw 3133, so that the supporting frame 3131 is driven to move in the vertical direction, when the worker wants to collect sand in the filter frame 312, the worker operates the driving motor 3132 to enable the supporting frame 3131 to move in the direction away from the ground, so that the filter frame 312 moves to the opening of the sedimentation tank 3, and the worker takes the filter frame 312 off the supporting frame 3131.

In order to facilitate the operator to take the filter frame 312, a handle 314 is fixedly connected to the side of the filter frame 312 away from the ground. In use, a worker may remove the filter frame 312 by holding the handle 314.

Referring to fig. 2, the cleaning device 32 includes a pushing cylinder 321 fixedly connected to a sidewall of the sedimentation tank 3, and a pushing plate (not shown in the drawing) fixedly connected to an end of a piston rod of the pushing cylinder 321 far away from the pushing cylinder 321, where the piston rod of the pushing cylinder 321 is disposed on the sidewall of the sedimentation tank 3, i.e. the pushing plate is located inside the sedimentation tank 3. It is understood that the side of the push plate close to the ground is abutted against the bottom of the sedimentation tank 3.

Referring to fig. 1 and 2, in order to facilitate the collection of the sand cleaned by the cleaning device 32 by the staff, a slag hole through which the push plate passes is provided on one side of the sedimentation tank 3, a second moving plate 33 for blocking the slag hole is hinged on one side of the sedimentation tank 3, the free end of the second moving plate 33 is connected with the side wall of the sedimentation tank 3 through a blocking piece 34, and the blocking piece 34 comprises a second buckle 341 fixedly connected on the second moving plate 33 and a second butt joint groove 342 fixedly connected on the side wall of the sedimentation tank 3.

In order to be convenient for collect the grit that cleaning device 32 cleared up, be provided with the collection box 35 that is used for collecting the grit on sedimentation tank 3 lateral wall, collection box 35 one end opening and collection box 35 open end are located the slag notch below.

In order to enable the second moving plate 33 to tightly seal the slag hole, a sealing ring is fixedly connected to one side of the second moving plate 33 close to the slag hole.

During the use, because sedimentation tank 3 bottom height is high Yu Chengqing pond 4 bottoms, consequently after wastewater treatment is accomplished, only remain a small amount of water in sedimentation tank 3 bottom, the staff shifts out second buckle 341 from second butt joint groove 342, rotate second movable plate 33 around its articulated shaft, open the slag notch, the staff starts promotion cylinder 321, the push pedal is moved to the slag notch direction under the drive of promotion cylinder 321 piston rod, release the grit of sedimentation tank 3 bottom, the grit passes through the slag notch landing in collecting box 35, accomplish the collection to the grit of sedimentation tank 3 bottom.

After the waste water enters the clarification tank 4 from the second communication port, sand and stone in the waste water possibly remain on the inner wall of the sedimentation tank 3, and in order to clean the inner wall of the sedimentation tank 3, sand and stone attached to the inner wall of the sedimentation tank 3 are recovered at the same time, and a cleaning device 5 for cleaning the inner wall of the sedimentation tank 3 is further arranged in the sedimentation tank 3.

Referring to fig. 2 and 3, the cleaning device 5 includes a support plate 51 disposed in the sedimentation tank 3, a water pipe 52 mounted on one side of the support plate 51 close to the side wall of the sedimentation tank 3, and a water spray pipe 53 fixedly connected on one side of the support plate 51 far away from the water pipe 52, wherein the water spray pipe 53 is provided with a plurality of water spray pipes, the water spray pipes 53 are circumferentially spaced along the support plate 51, the support plate 51 and the water spray pipes 53 are hollow, one end of the water pipe 52 is connected to an external water source, the other end is communicated with the interior of the support plate 51, and a plurality of water outlets are spaced on the water spray pipes 53.

When in use, a worker communicates an external water source with the water through pipe 52, water flows from the water through pipe 52 into the supporting disc 51, reaches the water spraying pipe 53 through the supporting disc 51, and finally flows out of the water outlet to clean the inner wall of the sedimentation tank 3.

Referring to fig. 1 and 3, the cleaning apparatus 5 further includes a power member 54 for rotating the support plate 51 in order to more comprehensively clean the inner wall of the settling tank 3. The power unit 54 includes a first motor 541 for supplying power, a mounting bracket 542 fixedly connected to a sidewall of the sedimentation tank 3 for mounting the driving motor 3132, a first gear 543 fixedly connected to an output shaft of the first motor 541, a connection tube 544 sleeved on the water pipe 52, and a second gear 545 fixedly connected to the connection tube 544, wherein the first gear 543 is meshed with the second gear 545. It can be appreciated that one end of the connecting tube 544 is rotatably connected to the water pipe 52, the other end of the connecting tube 544 is fixedly connected to the support plate 51, and the connecting tube 544 is communicated with the inside of the support plate 51.

When the device is used, a worker communicates an external water source with the water pipe 52 and starts the first motor 541, the output shaft of the first motor 541 rotates to enable the first gear 543 to rotate, the first gear 543 drives the second gear 545 meshed with the first gear to rotate, the connecting cylinder 544 is driven to rotate, the supporting disc 51 is driven to rotate, water flow is evenly sprayed onto the inner wall of the sedimentation tank 3 under the action of centrifugal force, the inner wall of the sedimentation tank 3 is cleaned, sand and stone attached to the inner wall of the sedimentation tank 3 slide to the bottom of the sedimentation tank 3 under the drive of the water flow, and finally the sand and stone are cleaned through the cleaning device 32.

In order to make the sand content of the wastewater entering the clarification tank 4 lower, a filter screen 311 grid is arranged at the second communication port, and the grid of the filter screen 311 grid is smaller in pore diameter and finer in distribution than the filter screen 311.

Referring to fig. 1 and 2, after wastewater enters the clarifier 4 from the second communication port, the wastewater is kept stand in the clarifier 4, and the upper water is basically free of impurities and can be used for cleaning a mixer truck or the ground, etc., in order to facilitate the use of the wastewater treated in the clarifier 4 by a worker, a water pumping device 7 is arranged at one side of the clarifier 4, and the water pumping device 7 comprises a water pumping pipe 71 and a water pump 72 extending into the clarifier 4.

In order to save water resources, water in the clarification tank 4 is reused, water in the clarification tank 4 is selected as water in the sedimentation tank 3, the water through pipe 52 is communicated with the water pumping pipe 71, and the water through pipe 52 and the water pumping pipe 71 are respectively provided with a water flow control valve 73.

The implementation principle of the concrete wastewater treatment system provided by the embodiment of the application is as follows: when concrete wastewater flows into the sand filtering pond 2, after preliminary filtration by the filter plate 21, the wastewater enters the sedimentation pond 3 from the first water through hole, and after further filtration by the filter screen 311, sand with smaller diameter is blocked by the filter screen 311, so that the wastewater purifying effect is better, the wastewater reaches the clarification pond 4 through the second communication hole, after standing in the clarification pond 4, a worker starts the water pump 72 to reutilize the wastewater in the clarification pond 4; after the wastewater treatment is completed, the worker operates the fixing member 24 to open the discharge hole, operates the vibration motor 222 to enable sand and stones deposited on the filter plate 21 to slide into the storage box 25, then starts the driving motor 3132 to move the filter frame 312 to the upper side of the sedimentation tank 3, holds the handle 314 to take out the filter frame 312, collects sand and stones in the filter frame 312, then starts the first motor 541 and opens the valve 73 to clean the inner wall of the sedimentation tank 3 through the cleaning device 5, then operates the plugging member 34 to open the slag hole, operates the pushing cylinder 321 to enable the pushing plate to push sand and stones deposited on the bottom of the sedimentation tank 3 into the collection box 35, and finally, the worker performs concentrated collection treatment on sand and stones in the collection box 35 of the storage box 25.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. A concrete wastewater treatment system, characterized in that: including catch basin (1), inside interval of catch basin (1) is provided with first baffle (11) and second baffle (12), first baffle (11) with second baffle (12) will catch basin (1) separates into filter sand pond (2), sedimentation tank (3) and clarification tank (4) mutually independent in proper order, first baffle (11) with first intercommunication mouth (111) and the second intercommunication mouth that supply waste water circulation have been seted up respectively on second baffle (12), be provided with filter (21) and be used for the clearance to pile up on filter (21) filter plate (22) filter device (31) and be used for clear away from sedimentation tank (3) bottom sediment grit's cleaning device (32), filter device (31) are located filter screen (311) one side that filter sand pond (2) were located filter screen (311) one side aperture was kept away from, filter screen (311) are located big filter screen (311).

2. The concrete wastewater treatment system of claim 1, wherein: the cleaning device (22) comprises a mounting block (221) fixedly connected to the inner wall of the sand filtering pool (2), a supporting piece (223) arranged on one side, far away from the ground, of the mounting block (221) and a vibrating motor (222) arranged on one side, close to the ground, of the filter plate (21), and the filter plate (21) is obliquely arranged.

3. The concrete wastewater treatment system of claim 2, wherein: the supporting piece (223) comprises a supporting cylinder (2231) fixedly connected to one side, far away from the ground, of the mounting block (221), a supporting column (2232) sleeved in the supporting cylinder (2231) and a spring fixedly connected between the supporting cylinder (2231) and the supporting column (2232).

4. The concrete wastewater treatment system of claim 1, wherein: the sand filtering device is characterized in that a discharge hole for sand and stone discharge is formed in the side wall of the sand filtering pool (2), a first movable plate (23) is hinged to the side wall of the sand filtering pool (2), the discharge hole can be plugged by the first movable plate (23), and a fixing piece (24) used for sealing is arranged between the first movable plate (23) and the side wall of the sand filtering pool (2).

5. The concrete wastewater treatment system of claim 1, wherein: the filtering device (31) further comprises a filtering frame (312) and a lifting assembly (313) for driving the filtering frame (312) to lift, and the filtering screen (311) is fixedly connected to one side, close to the ground, of the filtering frame (312).

6. The concrete wastewater treatment system of claim 5, wherein: lifting assembly (313) are including being used for bearing braced frame (3131), fixed connection in braced frame (3131) are close to connecting block on one side of second baffle (12), install second baffle (12) are kept away from ground one side and are used for providing driving motor (3132) and fixed connection be in screw rod (3133) on driving motor (3132) output shaft, connecting block threaded connection is in on screw rod (3133), offer in second baffle (12) and supply the mounting groove of screw rod (3133) installation, the mounting groove is close to filter screen (311) one side with sedimentation tank (3) intercommunication confession the connecting block slides.

7. The concrete wastewater treatment system of claim 1, wherein: the cleaning device (32) comprises a pushing cylinder (321) fixedly connected to the side wall of the sedimentation tank (3) and a pushing plate fixedly connected to the piston rod of the pushing cylinder (321) and far away from one end of the pushing cylinder (321), the piston rod of the pushing cylinder (321) penetrates through the side wall of the sedimentation tank (3), and one side, close to the ground, of the pushing plate is abutted to the bottom of the sedimentation tank (3).

8. The concrete wastewater treatment system of claim 7, wherein: the slag notch that supplies the push pedal passed has been seted up to sedimentation tank (3) one side, sedimentation tank (3) one side articulates has is used for the shutoff second movable plate (33) of slag notch, second movable plate (33) with be provided with between sedimentation tank (3) lateral wall be used for fixing shutoff piece (34) of second movable plate (33) position.

9. The concrete wastewater treatment system of claim 1, wherein: the sedimentation tank is characterized in that a supporting disc (51), a water pipe (52) and a spray pipe (53) are arranged inside the sedimentation tank (3), the water pipe (52) is installed on one side, close to the side wall of the sedimentation tank (3), of the supporting disc (51), the spray pipe (53) is fixedly connected on one side, far away from the water pipe (52), of the supporting disc (51), the spray pipe (53) is hollow, the water pipe (52) is communicated with the supporting disc (51), and a plurality of water outlets are formed in the spray pipe (53) in a spaced mode.

10. The concrete wastewater treatment system of claim 1, wherein: one side of the clarification tank (4) is provided with a water pumping device (7), and the water pumping device (7) comprises a water pumping pipe (71) extending into the clarification tank (4), a water pump (72) communicated with the water pumping pipe (71) and a valve (73) arranged on the water pumping pipe (71).