High-density pool for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment equipment, in particular to a sewage treatment high-density pool which comprises a high-density pool body, a coagulation pool, a flocculation pool and a sedimentation pool are sequentially arranged in the high-density pool body in the process direction, and a water collection tank is fixedly installed on the upper portion of one side of the high-density pool body and communicated with the sedimentation pool. A plurality of uniformly distributed inclined plates are mounted at the upper part of the sedimentation tank, and a sludge scraper with concentration grid strips and a sludge circulating pump are mounted at the lower part of the sedimentation tank. The sewage treatment device has the beneficial effects that hydraulic coagulation and hydraulic flocculation are replaced by mechanical coagulation and mechanical flocculation, chemical agents and sewage are mixed more quickly and fully due to mechanical stirring, meanwhile, the concentration of suspended matters in a reaction area can be increased by refluxed concentrated mud, the flocculation effect is enhanced, part of chemical agents are recycled, the coagulation and flocculation effects are enhanced, and the chemical agents are also saved; therefore, the impact load resistance and the settling performance are greatly improved, and the ideal and stable effluent quality can be ensured even under the condition of larger hydraulic load.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to a high-density sewage treatment pool. Background Art

[0002] High-density tank is a high-density sedimentation tank. High-density sedimentation tank is a compact, efficient and flexible new sewage treatment process. It can be widely used in various fields. With the coupled magnetic flocculation system, it can be used to treat industrial and domestic sewage, drinking water, rainwater and tertiary wastewater. This new water treatment process is very popular in European countries. High-density sedimentation tank technology is widely used and is suitable for drinking water production, sewage treatment, industrial wastewater treatment and sludge treatment.

[0003] In the existing technology, the main technology of the high-density pool is the carrier flocculation technology, which is a rapid sedimentation technology. However, when flocculating suspended matter in sewage, the traditional flocculation technology is hydraulic coagulation and hydraulic flocculation, which will cause the mixing of the agent and sewage to be slow, and the agent cannot fully exert its effect, thereby affecting the effluent water quality. Utility Model Content

[0004] The purpose of the utility model is to provide a high-density sewage treatment pool to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a high-density sewage treatment pool, comprising:

[0006] A high-density tank body, wherein a sedimentation tank, a flocculation tank and a coagulation tank are sequentially arranged inside the high-density tank body along the process direction, a water collecting tank is fixedly installed on the upper part of one side of the high-density tank body and is connected to the sedimentation tank, a transmission pipeline is installed at the bottom of the sedimentation tank, and one end of the transmission pipeline away from the sedimentation tank is fixedly installed in the middle of the top of the high-density tank body and is connected to the flocculation tank, and a plurality of evenly distributed inclined plates are installed on the upper part of the sedimentation tank;

[0007] Two sets of stirring mechanisms, the stirring mechanisms are respectively arranged inside the flocculation tank and the coagulation tank;

[0008] A mud scraper is arranged in a sedimentation tank.

[0009] Preferably, an input pipe is fixedly installed in the middle of one side of the coagulation tank, and an output pipe is fixedly installed in the middle of one side of the water collecting tank.

[0010] Preferably, a sewage pipe is fixedly installed at the middle and lower part of the outer periphery of the transmission pipeline, a circulation pump is installed at the lower part of the outer periphery of the transmission pipeline, and a solenoid valve is installed at the lower part of the outer periphery of the transmission pipeline.

[0011] Preferably, mounting plates are symmetrically fixedly installed in the flocculation tank, a guide tube is fixedly installed on one side of the mounting plates close to each other, and a guide plate is installed in the lower part of the guide tube.

[0012] Preferably, the stirring mechanism includes a driving shaft, which is rotatably mounted at the middle of the top of the high-density pool body and the middle of the other side of the top, stirring blades are fixedly mounted at the lower periphery of the driving shaft, and a stepping motor is fixedly mounted at the top of the driving shaft.

[0013] Preferably, the scraper includes a rotating shaft, which is rotatably mounted on the middle part of one side of the top of the high-density pool body, a separation plate is fixedly mounted on the lower part of the outer periphery of the rotating shaft, and a servo motor is fixedly mounted on the upper part of the outer periphery of the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a high-density sewage treatment tank with a coagulation tank, a flocculation tank, a sedimentation tank, a stirring mechanism and a scraper. The mechanical coagulation and flocculation replace the hydraulic coagulation and flocculation. The mechanical stirring makes the mixing of the reagent and the sewage faster and more complete, thus strengthening the coagulation and flocculation effect. The scraper with a concentration grid is installed outside the bottom of the sedimentation tank to continuously concentrate and settle the floc particles. A part of the concentrated sludge is returned to the front flocculation tank through a circulation pump, and the other part of the sludge is discharged from the system. The return sludge can increase the concentration of suspended matter in the reaction zone, strengthen the flocculation effect, and recover part of the chemical reagent. The coagulated water enters the flocculation tank. Under the joint action of the mixer and the guide tube, the water and the return sludge are fully mixed with the flocculant and circulate continuously. The flocs collide with each other, and the alum flowers are continuously generated to form dense and uniform floc particles, which greatly improves the impact load resistance and sedimentation performance. Even under the condition of large hydraulic load, it can ensure the ideal and stable effluent water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the main body of the high-density pool of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the internal structure of the guide tube.

[0019] In the figure: 1. High-density pool body; 2. Stirring mechanism; 21. Stirring fan blades; 22. Driving shaft; 23. Stepping motor; 3. Scraper; 31. Servo motor; 32. Rotating shaft; 33. Separation plate; 4. Transmission pipeline; 5. Output pipe; 6. Circulation pump; 7. Solenoid valve; 8. Drain pipe; 9. Input pipe; 10. Water collecting tank; 11. Sedimentation tank; 12. Flocculation tank; 13. Mounting plate; 14. Guide tube; 15. Coagulation tank; 16. Guide plate; 17. Inclined plate. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 3The utility model provides a technical solution: a high-density tank for sewage treatment, comprising: a high-density tank body 1, wherein a coagulation tank 15, a flocculation tank 12 and a sedimentation tank 11 are sequentially arranged inside the high-density tank body 1 along the process direction, a water collecting tank 10 is fixedly installed on the upper part of one side of the high-density tank body 1 and is connected to the sedimentation tank 11, a transmission pipeline 4 is installed at the bottom end of the sedimentation tank 11, and one end of the transmission pipeline 4 away from the sedimentation tank 11 is fixedly installed at the middle of the top of the high-density tank body 1 and is connected to the flocculation tank 12, and a plurality of evenly distributed inclined plates 17 are installed on the upper part of the sedimentation tank 11; two sets of stirring mechanisms 2, the stirring mechanisms 2 are respectively arranged inside the flocculation tank 12 and the coagulation tank 15 ; Scraper 3, the scraper 3 is provided with strips and is arranged in the sedimentation tank 11, an input pipe 9 is fixedly installed in the middle of one side of the coagulation tank 15, an output pipe 5 is fixedly installed in the middle of one side of the water collecting tank 10, a sewage pipe 8 is fixedly installed in the middle and lower part of the outer periphery of the transmission pipeline 4, a circulation pump 6 is installed in the upper part of the outer periphery of the transmission pipeline 4, and an electromagnetic valve 7 is installed in the lower part of the outer periphery of the transmission pipeline 4. The input pipe 9 is connected to the external sewage storage device, so that the sewage can enter the coagulation tank 15 along the input pipe 9, and then a coagulant is added to the coagulation tank 15, and the coagulant is quickly mixed with the suspended matter in the sewage under the cooperation of the stirring mechanism 2, and the negative charge on the surface of the particles is neutralized to make the particles "destabilized". , forming small flocs, while the phosphorus in the raw water reacts with the coagulant to form phosphate to achieve the purpose of chemical phosphorus removal, and then enters the flocculation tank 12 through the internal outlet weir. In the guide tube 14, the flocculant promotes the small flocs entering to form larger flocs through adsorption, electrical neutralization and mutual bridging. The stirring mechanism 2 in the flocculation tank 12 can slowly stir the raw water and coagulant in the guide tube 14, so that the coagulant and flocs can be fully mixed without destroying the formed large flocs, and then enter the sedimentation tank 11 through the outlet weir. After flocculation, the effluent enters the bottom of the inclined plate 17 of the sedimentation tank 11 and then flows upward to the upper water collection area. The particles and flocs are deposited on the surface of the inclined plate 17 and slide downward under the action of gravity. Since the scraper 3 can form a higher upward flow rate in the sedimentation tank 11 and cooperate with the inclined plate 17, a continuous self-scraping process can be formed, so that the flocs will not accumulate on the inclined plate 17. The micro-sand slides down along the surface of the inclined plate 17 with the sludge and settles at the bottom of the sedimentation tank 11. Then the circulating pump 6 transports the micro-sand and sludge to the hydraulic separator. Under the action of centrifugal force, the micro-sand and sludge are separated. The micro-sand flows out from the lower layer directly back to the flocculation tank 12. The solenoid valve 7 and the circulating pump 6 are closed, and the sludge is discharged from the sewage pipe 8. The precipitated water is stored in the collecting tank 10.

[0022] The flocculation tank 12 is symmetrically fixed with mounting plates 13, and the mounting plates 13 are fixedly installed with guide tubes 14 on one side close to each other, and the guide tubes 16 are installed at the lower part of the guide tubes 14. The stirring mechanism 2 includes a driving shaft 22, and the driving shaft 22 is rotatably installed at the middle of the top and the middle of the other side of the top of the high-density tank body 1, respectively. The lower part of the outer periphery of the driving shaft 22 is fixedly installed with stirring blades 21, and the top of the driving shaft 22 is fixedly installed with a stepping motor 23. By controlling the stepping motor 23, the stepping motor 23 can drive the driving shaft 22 to rotate, and then the stirring blades 21 can rotate synchronously. The stirring mechanism 2 in the coagulation tank 15 is used for rapid combination of coagulant and suspended matter in sewage, and the stirring mechanism 2 in the flocculation tank 12 rotates slowly for coagulant and flocculent energy In order to fully mix without destroying the large flocs that have been formed, the scraper 3 includes a rotating shaft 32, which is rotatably installed in the middle of one side of the top of the high-density tank body 1, and a scraper plate 33 with strips is fixedly installed on the lower part of the outer periphery of the rotating shaft 32, and a servo motor 31 is fixedly installed on the upper part of the outer periphery of the rotating shaft 32. By controlling the servo motor 31, the servo motor 31 can cooperate with the rotating shaft 32 to drive the scraper plate 33 to rotate, so that a higher upward flow rate can be formed in the sedimentation tank 11. In conjunction with the inclined plate 17, a continuous self-scraping process can be formed, so that the flocs will not accumulate on the inclined plate 17. At the same time, the sludge in the lower part of the sedimentation tank 11 can be pushed to the mud discharge port of the sedimentation tank 11 with the cooperation of the scraper plate 33, so that the sludge is convenient to be discharged from the outside of the sedimentation tank.

[0023] Furthermore, the scraper 33 connected below the rotating shaft 32 has a concentration grid bar. The scraper 33 with the concentration grid bar continuously concentrates and settles the floc particles during the rotation process, and returns a part of the concentrated sludge to the front flocculation tank 15 through the circulation pump 4, and the other part is discharged from the sewage pipe 8. The return sludge can increase the concentration of suspended matter in the reaction zone, enhance the flocculation effect, and recover part of the chemical agent. The coagulated water enters the flocculation tank. Under the joint action of the stirring mechanism 2 and the guide tube 14, the water and the return sludge are fully mixed with the flocculant and circulate continuously. The flocs collide with each other, and alum flowers are continuously generated to form dense and uniform floc particles.

[0024] In actual use, the staff connects the input pipe 9 to the external sewage storage device, so that the sewage can enter the coagulation tank 15 along the input pipe 9, and then add coagulant to the coagulation tank 15. Under the cooperation of the stirring mechanism 2, the coagulant and the suspended matter in the sewage can be quickly mixed to form small flocs, and then enter the flocculation tank 12. The stirring mechanism 2 in the flocculation tank 12 can slowly stir the raw water and coagulant in the guide tube 14, and then enter the sedimentation tank 11. Since the scraper 3 can A relatively high rising flow rate is formed in the sedimentation tank 11, and in conjunction with the inclined plate 17, a continuous self-scraping process can be formed, so that flocs will not accumulate on the inclined plate 17, and the micro-sand slides down along the surface of the inclined plate 17 with the sludge and settles at the bottom of the sedimentation tank 11, and then the circulating pump 6 transports the micro-sand and sludge to the hydraulic separator. Under the action of centrifugal force, the micro-sand and sludge are separated, and the micro-sand flows out from the lower layer directly back to the flocculation tank 12. The solenoid valve 7 is closed, and the sludge is discharged from the sewage pipe 8, and the precipitated water is stored in the water collecting tank 10.

[0025] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A high-density sewage treatment tank, characterized in that: include: A high-density tank body (1), wherein a coagulation tank (15), a flocculation tank (12) and a sedimentation tank (11) are sequentially arranged inside the high-density tank body (1) along the process direction; a water collecting tank (10) is fixedly installed on the upper part of one side of the high-density tank body (1) and is connected to the sedimentation tank (11); a transmission pipeline (4) is installed at the bottom end of the sedimentation tank (11); an end of the transmission pipeline (4) away from the sedimentation tank (11) is fixedly installed at the middle of the top of the high-density tank body (1) and is connected to the flocculation tank (12); a plurality of evenly distributed inclined plates (17) are installed on the upper part of the sedimentation tank (11); Two sets of stirring mechanisms (2), wherein the stirring mechanisms (2) are respectively arranged inside the flocculation tank (12) and the coagulation tank (15); A mud scraper (3), wherein the mud scraper (3) is arranged in a sedimentation tank (11).

2. A high-density sewage treatment tank according to claim 1, characterized in that: An input pipe (9) is fixedly installed in the middle of one side of the coagulation tank (15), and an output pipe (5) is fixedly installed in the middle of one side of the water collecting tank (10).

3. A high-density sewage treatment tank according to claim 1, characterized in that: A sewage pipe (8) is fixedly installed at the middle and lower part of the outer periphery of the transmission pipeline (4), a circulation pump (6) is installed at the lower part of the outer periphery of the transmission pipeline (4), and a solenoid valve (7) is installed at the lower part of the outer periphery of the transmission pipeline (4).

4. A high-density sewage treatment tank according to claim 1, characterized in that: The flocculation tank (12) is symmetrically fixedly installed with mounting plates (13), a guide tube (14) is fixedly installed on one side of the mounting plates (13) close to each other, and a guide plate (16) is installed in the lower part of the guide tube (14).

5. A high-density sewage treatment tank according to claim 1, characterized in that: The stirring mechanism (2) comprises a driving shaft (22), and the driving shaft (22) is rotatably mounted at the middle of the top end and the middle of the other side of the top end of the high-density pool body (1), and stirring blades (21) are fixedly mounted at the lower part of the outer periphery of the driving shaft (22), and a stepping motor (23) is fixedly mounted at the top end of the driving shaft (22).

6. A high-density sewage treatment tank according to claim 1, characterized in that: The scraper (3) comprises a rotating shaft (32) which is rotatably mounted on the middle part of one side of the top end of the high-density tank body (1); a scraper blade (33) is fixedly mounted on the lower part of the outer periphery of the rotating shaft (32); and a servo motor (31) is fixedly mounted on the upper part of the outer periphery of the rotating shaft (32).

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