Anti-blocking high-density pool of sewage treatment plant

Abstract

The utility model relates to an anti-blocking high-density pool of a sewage treatment plant. The sewage treatment device comprises a tank body, a flocculation tank arranged in the left side of the tank body, a sludge tank arranged on the right side of the tank body and communicated with the flocculation tank, a sedimentation tank arranged at the bottom between the flocculation tank and the sludge tank, a desilting assembly arranged in the sedimentation tank, a stirring device arranged in the flocculation tank and the sludge tank, and a filtering assembly arranged in the upper part of the sludge tank, a liquid inlet is formed in the top of the left side wall of the flocculation tank, a sewage outlet pipe is arranged at the bottom of the sedimentation tank, and a clean liquid outlet pipe is arranged on the right side wall of the sedimentation tank; the flocculation tank, the sludge tank and the sedimentation tank are arranged in three areas, so that the sewage can be conveniently and continuously treated in different areas, the gas explosion pipe and the sludge pump are cooperatively operated, and the pulse type cleaning of deposited sludge at the bottom of the sedimentation tank is realized; differential control over flocculation stirring and sludge treatment is achieved through dual-drive independent stirring, the grating type sludge scraping plate has the dual functions of stirring and sludge scraping, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a high-density tank for an anti-clogging sewage treatment plant, belonging to the field of water treatment technology. Background Technology

[0002] High-density sedimentation tanks, also known as high-density settling tanks, are a type of wastewater treatment system that separates solid particles from the water by adding agents such as lime and sodium carbonate to the wastewater. This process causes impurities to come into contact with each other, adsorb, and precipitate into larger particles. It is a compact, efficient, and flexible system used to treat industrial and domestic wastewater, drinking water, rainwater, and tertiary wastewater. However, after a period of use, high-density sedimentation tanks often become severely clogged, hindering the flow of pretreated wastewater and resulting in insufficient pretreated water flow, ultimately failing to meet the required total pretreated water volume. Furthermore, wastewater treatment plants operate for extended periods without time for maintenance or dredging, making online cleaning during shutdowns difficult and costly.

[0003] Chinese utility model patent CN221535716U discloses a high-density sedimentation tank anti-sludge accumulation structure, comprising a main body, within which a coagulation tank, a flocculation tank, and a sedimentation tank are arranged. An inlet pipe is provided on one side of the main body, a baffle wall is provided on the inner wall of the main body, and a slope is provided on one side of the baffle wall. An inclined pipe is provided inside the sedimentation tank, and a sludge scraper is provided at the bottom of the sedimentation tank. An outlet mechanism is provided on the other side of the main body, a fixing component is provided at the bottom of the baffle wall, and a sludge scraping mechanism is provided on one side of the baffle wall. A motor is provided at the top of the main body. The sludge scraping mechanism has… The body consists of a threaded rod, a mounting plate, a hinge, a scraper, a spring, a moving groove, and a limiting block. A threaded rod is provided on one side of the partition wall, a mounting plate is mounted on the threaded rod, a hinge is provided on one side of the mounting plate, a scraper is provided on one side of the mounting plate, a spring is provided on one side of the scraper, a moving groove is formed on one side of the partition wall, and a limiting block is provided on one side of the mounting plate. However, the hinge structure in the above solution is limited by the transmission ratio, resulting in slow removal of clogged sludge. It requires a chain to drive the scraper, and even then, it cannot completely remove the clogged sludge; it merely scrapes the sludge off using the chain-driven scraper, leading to poor efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-density tank for sewage treatment plants that prevents sludge blockage, thereby saving human resources and downtime losses and achieving the goal of cost reduction and efficiency improvement.

[0005] The present invention adopts the following technical solution:

[0006] This utility model relates to a high-density anti-clogging sewage treatment plant tank, comprising a tank body, a flocculation tank located on the left side of the tank body, a sludge tank located on the right side of the tank body and connected to the flocculation tank, a sedimentation tank located at the bottom between the flocculation tank and the sludge tank, a sludge removal component located in the sedimentation tank, a stirring device located in the flocculation tank and the sludge tank, and a filter component located in the upper part of the sludge tank; an inlet is provided at the top of the left side wall of the flocculation tank, a sludge outlet is provided at the bottom of the sedimentation tank, and a clean liquid outlet is provided above the filter component on the right side wall of the sedimentation tank.

[0007] This invention features a left partition wall and a right partition wall between a flocculation tank and a sludge tank. A lower flow channel is provided between the bottom of the left partition wall and the bottom wall of the tank, and an upper flow channel is provided at the top of the right partition wall. The sedimentation tank is located between the left and right partition walls. The sludge removal assembly includes a sludge pump installed in the sedimentation tank, a sludge discharge pipe installed at the outlet of the sludge pump, an air pump installed outside the top of the tank, and an air explosion pipe installed at the air outlet of the air pump. The outlet of the sludge discharge pipe is located outside the tank, and the outlet of the air explosion pipe is located inside the sedimentation tank. The sludge discharge pipe and the air explosion pipe are spaced apart between the left and right partition walls.

[0008] This utility model has a support wall set on the right side of the right partition wall above the sludge tank. The filter assembly includes a bracket installed between the support wall and the right side wall of the sludge tank, and an inclined tube packing installed on the top of the bracket.

[0009] The mixing device of this utility model includes a left mixing drive motor installed at the top of the flocculation tank, a left mixing shaft vertically installed on the bottom drive shaft of the left mixing drive motor, mixing blades spaced apart on the left mixing shaft, a right mixing drive motor fixedly installed at the top of the sludge tank, a right mixing shaft installed on the drive shaft of the right mixing drive motor, and a grid-type scraper installed at the bottom of the right mixing shaft. The grid-type scraper is located below the filter assembly.

[0010] This invention involves installing a guide tube inside a flocculation tank, and installing a support rod between the outer wall of the guide tube and the corresponding inner wall and left partition wall of the flocculation tank. The stirring blades are arranged inside the guide tube.

[0011] The lower part of the support wall of this utility model is inclined and bent to the right, and the inclination degree matches the inclination degree of the inclined tube filler; the left end of the bracket is fixed to the lower bend.

[0012] This invention features regulating valves installed on both the wastewater outlet pipe and the clean liquid outlet pipe.

[0013] The positive effects of this utility model are as follows: The three-zone design of the flocculation tank, sludge tank, and sedimentation tank facilitates continuous wastewater treatment by zone. The double partition walls on the left and right sides form an "S"-shaped water flow channel, extending the wastewater retention time and allowing sludge to settle in the sedimentation tank. The impact force of the agitated wastewater after the air explosion through the air explosion pipe disperses the sludge settled in the sedimentation tank, and the dispersed sludge is then discharged through the sludge discharge pipe by the sludge pump. The air explosion pipe and the sludge pump work together to achieve pulse-like cleaning of the sludge accumulated at the bottom of the sedimentation tank. The support wall and bracket together form a stable support structure, increasing the load-bearing capacity of the inclined tube packing. The inclined tube packing increases the effective filtration area by 3-5 times, significantly improving solid-liquid separation efficiency. Dual-drive independent stirring enables differentiated control of flocculation stirring and sludge treatment. The grid-type scraper has both stirring and scraping functions, improving energy utilization efficiency.

[0014] This utility model addresses the problem of sludge blockage in the sludge treatment tank online. It is fast and efficient, saving on downtime losses and avoiding the hassle of manual sludge cleaning, thus achieving the goal of cost reduction and efficiency improvement. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0016] Example 1:

[0017] As attached Figure 1 As shown, the high-density wastewater treatment tank of this utility model includes a tank body 1, a flocculation tank 2 located on the left side of the tank body 1, a sludge tank 3 located on the right side of the tank body 1 and connected to the flocculation tank 2, a sedimentation tank 4 located at the bottom between the flocculation tank 2 and the sludge tank 3, a sludge removal component located in the sedimentation tank 4, a stirring device located in the flocculation tank 2 and the sludge tank 3, and a filter component located in the upper part of the sludge tank 3; an inlet 5 is provided at the top of the left side wall of the flocculation tank 2, a sludge outlet pipe 6 is provided at the bottom of the sedimentation tank 4, and a clean liquid outlet pipe 7 is provided on the right side wall of the sedimentation tank 4 above the filter component; regulating valves 15 are installed on both the sludge outlet pipe 6 and the clean liquid outlet pipe 7, which facilitates automatic control of the flow rate of the sludge outlet pipe 6 and the clean liquid outlet pipe 7; this utility model has a three-zone configuration of flocculation tank, sludge tank and sedimentation tank, which facilitates continuous wastewater treatment by zone.

[0018] This invention features a left partition wall 8 and a right partition wall 9 between a flocculation tank 2 and a sludge tank 3. A lower flow channel is provided between the bottom of the left partition wall 8 and the bottom wall of the tank body 1, and an upper flow channel is provided at the top of the right partition wall 9. A sedimentation tank 4 is located between the left partition wall 8 and the right partition wall 9. The upper and lower flow channels cooperate to form a circulating water flow, connecting the flocculation tank 2 and the sludge tank 3. The double partition walls of the left partition wall 8 and the right partition wall 9 form an "S"-shaped water flow channel, extending the sewage retention time and settling the sludge in the sedimentation tank 4. The sludge removal assembly includes a sludge pump 10 installed in the sedimentation tank 4, a sludge discharge pipe 11 installed at the outlet of the sludge pump 10, an air pump 12 installed outside the top of the tank body 1, and an air explosion pipe 13 installed at the air outlet of the air pump 12. The outlet of the sludge discharge pipe 11 is located outside the tank body 1, and the air outlet of the air explosion pipe 13 is located inside the sedimentation tank 4. The sludge discharge pipe 11 and the air explosion pipe 13 are spaced apart between the left partition wall 8 and the right partition wall 9. The impact force of the turbulent sewage after the air explosion pipe 13 is used to disperse the sludge settled in the sedimentation tank 4. The dispersed sludge is then discharged through the sludge discharge pipe 11 by the sludge pump 10. The air explosion pipe 13 and the sludge pump 10 work together to achieve pulse-type cleaning of the sludge accumulated at the bottom of the sedimentation tank 4.

[0019] A support wall 14 is provided on the upper part of the sludge tank 3 on the right side of the right partition wall 9 of this utility model. The filter assembly includes a bracket 16 installed between the support wall 14 and the right side wall of the sludge tank 3, and an inclined tube packing 17 installed on the top of the bracket 16. The support wall 14 and the bracket 16 are combined to form a stable support structure, which improves the load-bearing capacity of the inclined tube packing 17. The inclined tube packing 17 increases the effective filtration area by 3-5 times, thereby improving the solid-liquid separation efficiency.

[0020] This utility model's stirring device includes a left stirring drive motor 18 installed at the top of the flocculation tank 2, a left stirring shaft 19 vertically installed on the bottom drive shaft of the left stirring drive motor 18, stirring blades 20 spaced apart on the left stirring shaft 19, a right stirring drive motor 21 fixedly installed at the top of the sludge tank 3, a right stirring shaft 22 installed on the drive shaft of the right stirring drive motor 21, and a grid-type scraper 23 installed below the right stirring shaft 22. The grid-type scraper 23 is located below the filter assembly. Dual-drive independent stirring enables differentiated control of flocculation stirring and sludge treatment. The grid-type scraper has both stirring and scraping functions, improving energy utilization efficiency.

[0021] Example 2:

[0022] This embodiment is a further improvement based on Embodiment 1. A guide tube 24 is installed inside the flocculation tank 2 of this utility model. A support rod 25 is installed between the outer wall of the guide tube 24 and the corresponding inner wall and left partition wall 8 of the flocculation tank 2. The stirring blades 20 are arranged inside the guide tube 24. The guide tube forms a directional flow channel, which enhances the turbulence effect of the flocculation reaction. The centralized stirring design inside the guide tube 24 reduces energy consumption by about 20%. The installation of the support rod 25 ensures the stable operation of the guide tube 24.

[0023] Example 3:

[0024] This embodiment is a further improvement based on embodiments one and two. The lower part of the support wall 14 is bent to the right, and the inclination matches the inclination of the inclined tube packing 17. The left end of the bracket 16 is fixed to the lower bend.

[0025] During operation, wastewater enters the flocculation tank 2 through the inlet 5. After adding chemicals into the flocculation tank 2, the left stirring drive motor 18 is started to drive the stirring blades 20 on the left stirring shaft 19 to stir and induce flocculation reaction, forming larger flocs. Then, the water flows through the downflow channel into the sedimentation tank, causing the sludge to settle. After the sludge is agitated by the air explosion pipe, the impact force of the turbulent wastewater disperses the sludge settled in the sedimentation tank 4. The dispersed sludge is then discharged through the sludge discharge pipe 11 by the sludge pump. The mixed liquid enters the sludge tank 3 through the upflow channel. The right stirring drive motor 21 drives the right stirring shaft 22 to rotate the grid-type scraper 23, scraping off the sludge deposited below the inclined tube packing. The sludge mixture is discharged from the bottom of the sedimentation tank through the sludge outlet pipe 6. The mixed liquid flows through the inclined tube packing 17, where the honeycomb inclined tubes further separate fine suspended solids through the surface enhancement effect. The purified liquid is collected from the top of the inclined tubes to the purified liquid outlet pipe 7 and enters the next process. The flow rates of the purified liquid and the sludge mixture are adjusted by the regulating valve 15.

[0026] This invention addresses the problem of sludge blockage in the sludge treatment tank online. It is fast and efficient, saving on downtime costs and avoiding the hassle of manual sludge cleaning, thus achieving the goal of cost reduction and efficiency improvement.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-density tank for an anti-clogging sewage treatment plant, characterized in that, It includes a pool body (1), a flocculation pool (2) located on the left side of the pool body (1), a sludge pool (3) located on the right side of the pool body (1) and connected to the flocculation pool (2), a sedimentation pool (4) located at the bottom between the flocculation pool (2) and the sludge pool (3), a sludge removal assembly located in the sedimentation pool (4), a stirring device located in the flocculation pool (2) and the sludge pool (3), and a filter assembly located in the upper part of the sludge pool (3); An inlet (5) is provided at the top of the left side wall of the flocculation tank (2), a sludge outlet (6) is provided at the bottom of the sedimentation tank (4), and a clean liquid outlet (7) is provided on the right side wall of the sedimentation tank (4) above the filter assembly.

2. The anti-clogging high-density tank for a sewage treatment plant according to claim 1, characterized in that, A left partition wall (8) and a right partition wall (9) are installed between the flocculation tank (2) and the sludge tank (3); A lower flow channel is provided between the bottom of the left partition wall (8) and the bottom wall of the pool body (1), and an upper flow channel is provided at the top of the right partition wall (9). The sedimentation tank (4) is located between the left partition wall (8) and the right partition wall (9). The sludge removal assembly includes a sludge pump (10) installed in the sedimentation tank (4), a sludge discharge pipe (11) installed at the outlet of the sludge pump (10), an air pump (12) installed outside the top of the tank body (1), and an air explosion pipe (13) installed at the air outlet of the air pump (12); the outlet of the sludge discharge pipe (11) is located outside the tank body (1), and the air outlet of the air explosion pipe (13) is located inside the sedimentation tank (4); the sludge discharge pipe (11) and the air explosion pipe (13) are spaced apart between the left partition wall (8) and the right partition wall (9).

3. The anti-clogging high-density tank for a sewage treatment plant according to claim 2, characterized in that, A support wall (14) is provided on the upper part of the sludge tank (3) on the right side of the right partition wall (9). The filter assembly includes a bracket (16) installed between the support wall (14) and the right side wall of the sludge tank (3) and an inclined tube packing (17) installed on the top of the bracket (16).

4. A high-density anti-clogging sewage treatment plant tank according to claim 3, characterized in that, The stirring device includes a left stirring drive motor (18) installed at the top of the flocculation tank (2), a left stirring shaft (19) vertically installed on the bottom drive shaft of the left stirring drive motor (18), stirring blades (20) spaced apart on the left stirring shaft (19), a right stirring drive motor (21) fixedly installed at the top of the sludge tank (3), a right stirring shaft (22) installed on the drive shaft of the right stirring drive motor (21), and a grid-type scraper (23) installed at the bottom of the right stirring shaft (22), wherein the grid-type scraper (23) is located below the filter assembly.

5. A high-density anti-clogging sewage treatment plant tank according to claim 4, characterized in that, A guide tube (24) is installed inside the flocculation tank (2). A support rod (25) is installed between the outer wall of the guide tube (24) and the corresponding inner wall of the flocculation tank (2) and the left partition wall (8). The stirring blade (20) is set inside the guide tube (24).

6. A high-density anti-clogging sewage treatment plant tank according to claim 3, characterized in that, The lower part of the support wall (14) is bent to the right, and the inclination matches the inclination of the inclined tube filler (17); the left end of the bracket (16) is fixed to the lower bend.

7. A high-density anti-clogging sewage treatment plant tank according to claim 1, characterized in that, A regulating valve (15) is installed on both the wastewater outlet pipe (6) and the clean liquid outlet pipe (7).

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