Wastewater purification treatment device and treatment method using flocculation sedimentation

Abstract

The present invention discloses a sewage purification treatment device using flocculation and sedimentation, which relates to the technical field of sewage purification, including a treatment pool, a pumping assembly, an air intake assembly, a return pipe and a filter assembly, which are symmetrically arranged on both sides of the treatment pool, and a drainage assembly is arranged between the return pipes on both sides. The present invention also discloses a treatment method for a sewage purification treatment device using flocculation and sedimentation, which includes the following steps: flocculant delivery, flocculation reaction, self-cleaning and flocculent cleaning. The present invention arranges a pumping assembly and a return pipe on both sides of the treatment pool, and the pumping assembly, the return pipe and the drainage assembly cooperate to pump sewage from the top of the treatment pool to the bottom to achieve sewage circulation. During the circulation process, the pumping pipe can extract flocculants in the flocculant storage tank, which improves the mixing effect of the flocculant and sewage while achieving the delivery of the flocculant, so as to improve the sewage treatment effect.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification, and in particular to a sewage purification treatment device and a treatment method using flocculation sedimentation. Background Art

[0002] With the development of industrialization, sewage treatment has become an urgent problem to be solved in urban development. Sewage treatment refers to the process of purifying sewage to meet the water quality requirements for drainage or reuse. Flocculation sedimentation, as one of the most widely used sewage treatment technologies, can effectively reduce the scaling components and suspended matter concentration in water.

[0003] For example, a flocculation sedimentation tank for sewage treatment with publication number CN109879385B includes a sedimentation tank body, a receiving net bag and a turbine. A cover plate is fixedly installed on the top of the sedimentation tank body, the receiving net bag is arranged at the bottom of the sedimentation tank body, a fixed pipe is installed at the bottom center of the sedimentation tank body, the outer wall of the pipe end of the fixed pipe and the guide pipe is vertically connected with a fixing piece, a turbine is installed inside the connecting pipe, a mixed flow component is connected to the outside of the fixed pipe, a positioning bolt is welded on the side of the connection between the fixing bolt and the fixed sleeve, and a positioning groove is reserved on the fixed sleeve. The flocculation sedimentation tank for sewage treatment will not cause the blockage of the outlet hole of the flocculation mixed water drainage pipe when used for a long time, and maintain its normal use. At the same time, it can improve the mixing efficiency of suspended impurities and flocculation mixed water, avoid the flocculation and sedimentation impurities from being statically accumulated at the bottom of the tank for a long time and condensing into a mass, which is conducive to the discharge of flocculation and sedimentation impurities.

[0004] The above technical solution has some problems during use. It is difficult to ensure the mixing effect of flocculant and sewage during the treatment process. In addition, the flocs generated during sewage treatment are not convenient to clean, and the equipment cannot self-clean the flocs.

[0005] Therefore, it is necessary to invent a sewage purification treatment device and a treatment method using flocculation and sedimentation to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a sewage purification treatment device and a treatment method using flocculation sedimentation to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a sewage purification treatment device using flocculation sedimentation, comprising a treatment tank, the bottom of which is inclined, and also comprising a pumping assembly, which is installed on both sides of the treatment tank and is used to extract the upper layer of liquid inside the treatment tank;

[0008] A plurality of air intake components are arranged in sequence and are connected to the corresponding water pumping components, and are used to inject air into the extracted liquid;

[0009] A water return pipe, which is installed on both sides of the treatment tank and is connected to the corresponding air intake assembly;

[0010] A filter assembly is placed inside the treatment tank and can be adjusted in height relative to the bottom of the treatment tank, and each of the pumping assemblies is connected to a corresponding filter assembly;

[0011] There are multiple drainage components, which are evenly distributed at the bottom of the treatment tank. The end of each return pipe is connected to the corresponding drainage component, which is used to discharge the liquid extracted by the pumping component from the bottom of the treatment tank.

[0012] Preferably, each of the drainage components comprises a plurality of three-way pipes connected in sequence, and the three-way pipes on both sides of each drainage component are connected to the corresponding return pipe;

[0013] Drain pipes, which correspond to the three-way pipes one by one, and each of the drain pipes is connected to the corresponding three-way pipe;

[0014] The outer side of each drainage pipe is connected with a plurality of obliquely arranged drainage holes.

[0015] Preferably, each of the drainage components further comprises a blocking ring, which is fixedly connected to the inner wall of the drainage pipe and is placed close to one end of the tee pipe;

[0016] A sealing platform, which is placed at the upper end of the blocking ring and has a conical bottom, and each of the sealing platforms is coaxial with the corresponding blocking ring;

[0017] A return spring is fixedly connected to the upper end of the sealing platform, and the upper end is in contact with the inside of the drain pipe.

[0018] Preferably, each of the filter components comprises a fixed cover, which is in communication with the pumping component and has an opening on a side away from the pumping component;

[0019] The filter cotton is placed in the fixed cover and is placed close to the position connected with the pumping assembly;

[0020] A positioning assembly, which is arranged at the upper end of the fixed cover and is used to adjust the height of the fixed cover relative to the bottom of the treatment tank;

[0021] The filter components on the left and right sides are symmetrically arranged.

[0022] Preferably, each of the filter components further comprises a plurality of flip plates which are uniformly distributed in sequence at the opening of the fixed cover, the flip plates are rotatably connected to the fixed cover, and the flip plates can only rotate toward a side close to the filter cotton;

[0023] The flocculent discharge pipe is connected with the corresponding fixed cover and is used for discharging the dirt on the outside of the filter cotton.

[0024] Preferably, each of the pumping components includes a plurality of bellows, which are sequentially arranged on the outside of the fixed cover;

[0025] A fixed pipe, each of the bellows is connected to a corresponding fixed pipe, the middle of which is connected to a valve, and the upper end of the valve is connected to a medicine storage bottle;

[0026] A water pump, which is connected to the corresponding fixed pipe, and the output end is connected to a pressure dividing pipe, and each of the air intake components is connected to the corresponding pressure dividing pipe;

[0027] The pumping components on the left and right sides are symmetrically arranged.

[0028] Preferably, each of the air intake components comprises a connecting pipe, the upper end of which is connected to the corresponding pressure dividing pipe, and the lower end of which is connected to the corresponding water return pipe;

[0029] An air intake hood is sleeved on the outside of the connecting pipe, and the upper end of the hood is connected with the air intake pipe;

[0030] A dust cover, which is fixedly mounted on the upper end of the corresponding air intake pipe;

[0031] An air guide pipe, which penetrates through the side wall of the connecting pipe and is connected with the air inlet hood;

[0032] The end surface of the air guide pipe is an inclined surface, which is used to inject air into the liquid flowing through the connecting pipe.

[0033] Preferably, the positioning assembly includes a positioning screw, which is fixedly connected to the upper end of the fixed cover;

[0034] A positioning seat, which is slidably matched with a corresponding positioning screw, and the positioning seat is fixedly connected to the treatment tank;

[0035] A positioning nut, which is sleeved on the outside of the corresponding positioning screw and matches with the corresponding positioning screw thread;

[0036] The number of the positioning nuts is at least two, and they are respectively placed at the upper and lower ends of the positioning seat.

[0037] Preferably, an inclined slot is provided at the lower end of the treatment tank, the end of the inclined slot is connected to a sewage pipe, and the middle of the sewage pipe is connected to a solenoid valve.

[0038] The present invention also provides a treatment method of a sewage purification treatment device using flocculation and sedimentation, comprising the following steps:

[0039] Step 1: Adding flocculants: Add the flocculants into the flocculant storage tank, and start the water pump to extract the sewage to be treated in the treatment tank, so that the sewage and the flocculants are mixed and then flow back to the inside of the treatment tank through the drainage component;

[0040] Step 2: flocculation reaction. After the sewage is mixed with the flocculant, a flocculation reaction occurs, so that flocs are generated in the sewage. During this process, the water pump provides kinetic energy for the circulation of the sewage, and the air intake component injects external air into the sewage, so that bubbles are generated in the sewage to enhance the mixing effect of the sewage and the flocculant, and the generated flocs float up with the bubbles.

[0041] Step 3: Self-cleaning: turn off the water pump on one side, and flush water to the filter assembly on the side where the water pump is turned off through the return pipe through the water pump on the other side. Turn over the closed fixed cover to allow the internal dirt to flow out through the flocculant discharge pipe. The water pumps on both sides are started and stopped alternately to complete the cleaning of the device itself.

[0042] Step 4: Clean the flocs. Close the pumping assembly, let the liquid inside the treatment tank stand still, let the flocs settle naturally, open the solenoid valve, and discharge the flocs through the drain pipe to complete the cleaning of the flocs.

[0043] Technical effects and advantages of the present invention:

[0044] 1. The present invention arranges a pumping assembly, a return pipe and a drainage assembly arranged at the bottom of the treatment pool on both sides of the treatment pool. A water pump is arranged in the pumping assembly. When treating sewage, the pumping assembly, the return pipe, the drainage assembly and the circulation pump cooperate to pump the sewage at the top of the treatment pool to the bottom to achieve sewage circulation. During the circulation process, the drainage assembly can extract the flocculant in the medicine storage bottle, thereby achieving the addition of the flocculant and improving the mixing effect of the flocculant and sewage, so as to improve the sewage treatment effect.

[0045] 2. The present invention arranges an air intake assembly at the end of the return pipe. The air intake assembly can inject outside air into the sewage when the sewage flows through the return pipe. After the sewage and air enter the treatment pool, the air forms bubbles and floats up. The light flocs generated during the sewage treatment process can float up with the bubbles, which is convenient for cleaning the flocs, thereby improving the sewage treatment efficiency.

[0046] 3. The present invention sets a filter assembly at one end of the water pump, and the filter assembly includes a fixed cover and filter cotton. The filter assembly can filter flocs to prevent the flocs from affecting the circulation of sewage. A positioning assembly is set at the top of the fixed cover. The positioning assembly can adjust the height of the filter assembly so as to make adaptive adjustments according to the liquid level height of the sewage inside the treatment pool.

[0047] 4. The present invention provides a water pump, a blocking ring and a sealing platform, and repeatedly opens / closes the water pumps on both sides, so that the flocs adhered to the outside of the filter cotton can be cleaned and discharged, so that the equipment can automatically clean the flocs and improve the stability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0049] Figure 2 It is a schematic diagram of the internal structure of the treatment pool in the present invention.

[0050] Figure 3 It is a schematic diagram of the structure of the water pumping component in the present invention.

[0051] Figure 4 For the present invention Figure 3 A partial enlarged schematic diagram of the inner A area.

[0052] Figure 5 It is a schematic diagram of the connection relationship between the pumping component and the filtering component in the present invention.

[0053] Figure 6 It is a partially enlarged schematic diagram of the water pumping component and the filtering component in the present invention.

[0054] Figure 7 It is a schematic diagram of the structure of the positioning component in the present invention.

[0055] Figure 8 It is a schematic diagram for comparing the sealing platform before and after movement in the present invention.

[0056] Fig. 9 It is a schematic diagram of the structure of the treatment pool in the present invention.

[0057] In the figure: 1. treatment tank; 2. pumping assembly; 3. air intake assembly; 4. return pipe; 5. filter assembly; 6. drainage assembly; 7. chute; 8. sewage pipe; 9. solenoid valve; 20. bellows; 21. fixed pipe; 22. valve; 23. medicine storage bottle; 24. water pump; 25. pressure dividing pipe; 30. connecting pipe; 31. air intake hood; 32. air intake pipe; 33. dust cover; 34. air guide pipe; 50. fixed hood; 51. filter cotton; 52. positioning assembly; 53. flip plate; 54. flocculant discharge pipe; 520. positioning screw; 521. positioning seat; 522. positioning nut; 60. tee pipe; 61. drainage pipe; 62. drainage hole; 63. blocking ring; 64. sealing table; 65. reset spring. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Embodiment 1, the present invention provides as follows Figures 1 to 9The sewage purification treatment device using flocculation sedimentation shown includes a treatment tank 1, the bottom of which is an inclined surface, the sewage to be treated is placed in the treatment tank 1, and the internal water flow is still after the floccules are generated, so that the floccules and liquid in the sewage tank can be separated; it also includes a pumping assembly 2, which is installed on both sides of the treatment tank 1, and is used to extract the upper layer of liquid inside the treatment tank 1, so that the liquid in the treatment tank 1 flows. There are multiple air intake assemblies 3, which are arranged in sequence and are connected with the corresponding pumping assemblies 2, and are used to inject air into the extracted liquid to improve the mixing effect of sewage and reagents. The return pipe 4 is installed on both sides of the treatment tank 1 and is connected with the corresponding air intake assembly 3. The return pipe 4 runs through the side wall of the treatment tank 1. The filter assembly 5 is placed inside the treatment tank 1 and can be adjusted in height relative to the bottom of the treatment tank 1 to be suitable for different sewage heights. Each pumping assembly 2 is connected with the corresponding filter assembly 5 to ensure that there are no large particles in the sewage extracted by the pumping assembly 2, prevent the pumping assembly 2 from being blocked, and clean up the dirt in the sewage. There are multiple drainage components 6, which are evenly distributed at the bottom of the treatment tank 1. The end of each return pipe 4 is connected to the corresponding drainage component 6, which is used to discharge the liquid extracted by the pumping component 2 from the bottom of the treatment tank 1, so as to mix the liquid in the treatment tank 1 and improve the sewage treatment effect.

[0060] Specifically, each drainage component 6 includes a plurality of tee pipes 60 connected in sequence, the middle opening of the tee pipe 60 faces upward, so that the extracted sewage is discharged upward, and the mixing effect of the liquid in the treatment tank 1 is improved. The tee pipes 60 on both sides of each drainage component 6 are connected to the corresponding return pipe 4. The drainage pipe 61 corresponds to the tee pipe 60 one by one, and each drainage pipe 61 is connected to the corresponding tee pipe 60. The drainage pipe 61 is fixedly connected to the opening position in the middle of the tee pipe 60, and the drainage pipe 61 is arranged in a vertical direction. The outer side of each drainage pipe 61 is connected to a plurality of inclined drainage holes 62, and the plurality of drainage holes 62 are arranged at a downwardly inclined angle, so that the sewage mixed with the flocculant can be fully dispersed in the treatment tank 1, which is conducive to the rapid precipitation of the dirt.

[0061] More specifically, each filter assembly 5 includes a fixed cover 50, which is connected to the pumping assembly 2 and has an opening on the side away from the pumping assembly 2. The fixed cover 50 is a thin-walled rectangular structure, and its opening position is a downwardly inclined slope, which is convenient for extracting sewage from the treatment tank 1. The filter cotton 51 is placed in the fixed cover 50 and is placed close to the position connected to the pumping assembly 2. The filter cotton 51 is used to filter flocs and larger particles in the extracted sewage. The filtering accuracy of the filter cotton 51 can be replaced and adjusted according to the use requirements. The positioning assembly 52 is arranged at the upper end of the fixed cover 50 and is used to adjust the height of the fixed cover 50 relative to the bottom of the treatment tank 1. The height of the fixed cover 50 relative to the bottom of the treatment tank 1 is adjusted by the positioning assembly 52 to achieve the purpose of adapting to different liquid level heights.

[0062] It should be noted that the filter components 5 on the left and right sides are symmetrically arranged.

[0063] Specifically, each pumping assembly 2 includes a plurality of bellows 20, which are sequentially arranged on the outside of the fixed cover 50. The length of the bellows 20 can be extended and contracted, so that the normal operation of the pumping assembly 2 is not affected when the height of the fixed cover 50 is adjusted. The fixed pipe 21, each bellows 20 is connected to the corresponding fixed pipe 21, and the fixed pipe 21 is fixedly connected to the upper end of the treatment tank 1, and the middle part is connected with a valve 22, and the upper end of the valve 22 is connected with a medicine storage bottle 23. During use, the medicine storage bottle 23 needs to be filled with an appropriate amount of flocculent reaction agent in advance, and the adding speed of the agent is controlled by manually adjusting the valve 22. The water pump 24 is connected to a control circuit for controlling the start and stop of the water pump 24, and a worm gear pump is used to ensure that the water pump 24 can flow back due to the pressure difference when it stops. The water pump 24 is connected to the corresponding fixed pipe 21, and the output end is connected to a pressure dividing pipe 25, and the pressure dividing pipe 25 has multiple output interfaces. Each air intake component 3 is connected to the corresponding pressure dividing pipe 25 for fully injecting air into the sewage.

[0064] It should be noted that the pumping components 2 on the left and right sides are symmetrically arranged.

[0065] Specifically, each air intake assembly 3 includes a connecting pipe 30, the upper end of which is connected to the corresponding pressure dividing pipe 25, and the lower end is connected to the corresponding water return pipe 4, and the diameter of the middle part of the connecting pipe 30 is reduced. The air intake cover 31 is mounted on the outside of the connecting pipe 30, which is mounted at the position where the diameter of the connecting pipe 30 is reduced, and the upper end is connected to the air intake pipe 32, and a one-way air valve is provided in the middle of the air intake pipe 32 to prevent the internal liquid from flowing back through the air intake pipe 32. The dust cover 33 is fixedly installed on the upper end of the corresponding air intake pipe 32, and is used to filter larger particles in the air to prevent the air intake pipe 32 from being blocked. The air guide pipe 34 runs through the side wall of the connecting pipe 30, and is connected to the air intake cover 31, and is placed in the lower position of the air intake cover 31. The end face of the air guide pipe 34 is an inclined surface, which is used to inject air into the liquid flowing through the connecting pipe 30. When the liquid flows rapidly through the connecting pipe 30, the inclined end face of the air guide pipe 34 will produce a Venturi effect, drawing the air in the air inlet hood 31 into the connecting pipe 30 and mixing it with the liquid inside.

[0066] More specifically, the positioning assembly 52 includes a positioning screw 520, which is fixedly connected to the upper end of the fixed cover 50. A positioning seat 521, which is slidably matched with the corresponding positioning screw 520, and the positioning seat 521 is fixedly connected to the treatment tank 1, and the positioning seat 521 is arranged on the upper end surface of the treatment tank 1. A positioning nut 522, which is sleeved on the outer side of the corresponding positioning screw 520, and is threadedly matched with the corresponding positioning screw 520. The number of the positioning nuts 522 is at least two, and they are respectively placed at the upper and lower ends of the positioning seat 521.

[0067] Before use, after sewage is injected into the treatment pool 1, the height of the positioning screw 520 relative to the positioning seat 521 is adjusted by the positioning nut 522 so that the fixed cover 50 can be placed below the sewage level. After the adjustment is completed, the two positioning nuts 522 need to tighten the corresponding positioning seat 521 to prevent the fixed cover 50 from moving up and down during use.

[0068] Specifically, a chute 7 is provided at the lower end of the treatment tank 1, and the bottom of the chute 7 is an inclined surface. When the liquid is naturally stratified, the larger flocs in the sewage will naturally settle and fall into the chute 7. The end of the chute 7 is connected to a sewage pipe 8, and the sewage pipe 8 is placed on one side of the lowest end of the chute 7. The middle of the sewage pipe 8 is connected to a solenoid valve 9, and the solenoid valve 9 is connected to a controller and a power supply. The conduction of the sewage pipe 8 is controlled by the solenoid valve 9. When the sewage pipe 8 is connected to the outside, the flocs in the chute 7 will quickly flow out of the treatment tank 1 through the sewage pipe 8 due to the water pressure, and what flows out after the flocs are discharged is the treated sewage.

[0069] In this embodiment, the sewage to be treated is added to the treatment pool 1 in priority, and the amount of medicine to be used is calculated according to the amount of sewage filled, and the medicine is pre-loaded into the medicine storage bottle 23. Then, the position of the positioning nut 522 relative to the positioning screw 520 is adjusted so that the fixing cover 50 is placed below the sewage level. During this process, the bellows 20 will be compressed or stretched.

[0070] Then the water pump 24 is started, and the upper part of the sewage in the treatment tank 1 enters the fixed pipe 21 through the filter cotton 51. During this process, the valve 22 is manually opened to control the adding speed of the agent. The sewage and the agent are transported to the pressure dividing pipe 25 through the water pump 24 and evenly pass through multiple air intake components 3.

[0071] In this process, the sewage generates a Venturi effect through the connecting pipe 30, sucking the outside air into the connecting pipe 30 and mixing it with the sewage. The sewage after mixing with gas enters the three-way pipe 60 through the return pipe 4 and is discharged through the drainage hole 62 outside the drainage pipe 61. Then the reagent is fully mixed with the sewage. Due to the influence of air, the mixing effect is improved, causing flocs to be produced in the sewage.

[0072] After the reagent is completely added to the sewage and fully reacts with the sewage, the water pump 24 is turned off to calm the internal liquid, and the flocs are allowed to settle, so that the flocs fall into the chute 7 at the bottom of the treatment tank 1. Then, the sewage pipe 8 is connected through the solenoid valve 9 to discharge the flocs, completing the sewage treatment.

[0073] Embodiment 2, as described above, in the actual sewage filtering process, the filter cotton 51 will become clogged due to long-term use, resulting in the upper sewage cannot be extracted by the water pump 24, and the load of the water pump 24 is increased due to the blockage. If the filter cotton 51 is not cleaned in time during use, the equipment will not be able to operate stably.

[0074] In view of the above technical problems existing in the production process, each drainage component 6 also includes a blocking ring 63, which is fixedly connected to the inner wall of the drain pipe 61 and is placed close to one end of the tee pipe 60. The middle part of the blocking ring 63 is a hole structure that allows sewage to pass through. A sealing platform 64 is placed at the upper end of the blocking ring 63 and has a conical bottom. Each sealing platform 64 is coaxial with the corresponding blocking ring 63. The lower end of the sealing sleeve is made of rubber material, which can fit the blocking ring 63. A reset spring 65 is fixedly connected to the upper end of the sealing platform 64, and the upper end is in contact with the inside of the drain pipe 61. The reset spring 65 is used to squeeze the sealing platform 64 to move toward the blocking ring 63.

[0075] It should be noted that the elastic coefficient of the return spring 65 is limited. When a water pump 24 is started, the return spring 65 makes the sealing platform 64 and the blocking ring 63 fit tightly, and the liquid with the first pressure will not enter the drain pipe 61. At this time, the return spring 65, the sealing platform 64, and the blocking ring 63 are as follows. Figure 8 When the two water pumps 24 are started, the liquid with the second pressure can enter the drain pipe 61 (the second pressure is greater than the first pressure), and the return spring 65, the sealing platform 64, and the blocking ring 63 are as shown in FIG. Figure 8 As shown in the position diagram (b).

[0076] Specifically, each filter assembly 5 further includes a plurality of flip plates 53, which are uniformly distributed at the opening of the fixed cover 50 in sequence. The flip plates 53 are rotatably connected to the fixed cover 50. A protrusion is provided at the lower side of the opening of the fixed cover 50 to prevent the flip plates 53 from rotating in the opposite direction, and the flip plates 53 can only rotate toward the side close to the filter cotton 51. The lint discharge pipe 54 is connected to the corresponding fixed cover 50 and is used to discharge the dirt outside the filter cotton 51. The middle part of the lint discharge pipe 54 also adopts a corrugated design so that the output end of the lint discharge pipe 54 will not be affected when the fixed cover 50 moves up and down.

[0077] In this embodiment, when the two water pumps 24 are started at the same time, the pressure in the return pipe 4 is relatively large. At this time, the liquid in the return pipe 4 pushes the sealing platform 64 to slide upward, so that the liquid enters the drain pipe 61 through the gap between the sealing platform 64 and the blocking ring 63 and is discharged through the drainage hole 62. The sewage mixed with the flocculant can be dispersed and discharged into the treatment pool 1; when only one of the water pumps 24 is started, the reset spring 65 pushes the sealing platform 64 and the blocking ring 63 to fit tightly. At this time, the liquid in the return pipe 4 will flow to the side where the water pump 24 is not started, and enter the corresponding filter assembly 5. Then the reverse-flowing liquid will flush the filter cotton 51. In this process, the sewage pushes the flip plate 53 to rotate to close the fixed cover 50. At this time, the refluxed liquid will discharge large particles such as light flocs adhering to the outside of the filter cotton 51 through the flocculant discharge pipe 54. The water pumps 24 on both sides are started alternately to complete the cleaning work of the filter assemblies 5 on the left and right sides, thereby preventing the filter cotton 51 from being unable to be cleaned in time and causing an impact on sewage treatment.

[0078] Moreover, considering that flocculants are generally high molecular polymer organic matter, they are easy to form very viscous pellets after contacting water. There are often very viscous flocculant pellets remaining between the medicine storage bottle 23 and the fixed pipe 21, that is, the position where the sewage in the fixed pipe 21 and the flocculants in the medicine storage bottle 23 are mixed. And as the working time accumulates, the flocculants become larger and larger, which will cause the medicine storage bottle 23 and the fixed pipe 21 to be blocked after a long time, affecting the subsequent addition of flocculants. Therefore, a throttle valve is provided on the flocculant discharge pipe 54. After light-weight flocs and other large particles are discharged through the floc discharge pipe 54, the throttle valve on the floc discharge pipe 54 is closed, and the valve 22 on the fixed pipe 21 is opened. The sewage will be discharged through the fixed pipe 21, the valve 22, and the medicine storage bottle 23. In this process, the sewage can be flushed through the fixed pipe 21, the valve 22, and the medicine storage bottle 23, and the high-viscosity flocculant pellets adhering to the fixed pipe 21, the valve 22, and the medicine storage bottle 23 can be washed away to prevent blockage and affect the subsequent addition of flocculants.

[0079] Embodiment 3, the present invention also provides a sewage purification method using flocculation sedimentation, comprising the following steps:

[0080] Step 1: Adding flocculant: Add the flocculant into the flocculant storage tank, and start the water pump 24 to extract the sewage to be treated in the treatment tank 1, so that the sewage and the flocculant are mixed and then flow back to the inside of the treatment tank 1 through the drainage component 6;

[0081] Step 2: flocculation reaction. After the sewage is mixed with the flocculant, a flocculation reaction occurs, so that floccules are generated in the sewage. During this process, the water pump 24 provides kinetic energy for the circulation of the sewage, and the air intake component 3 injects external air into the sewage, so that bubbles are generated in the sewage to enhance the mixing effect of the sewage and the flocculant, and the generated floccules float up with the bubbles.

[0082] Step 3: Self-cleaning: turn off the water pump 24 on one side, and flush water to the filter assembly 5 on the side where the water pump 24 is turned off through the return pipe 4 through the water pump 24 on the other side. The flip part closes the fixed cover 50 to allow the internal dirt to flow out through the flocculant discharge pipe 54. The water pumps 24 on both sides are started and stopped alternately to complete the cleaning of the device itself.

[0083] Step 4: Cleaning the flocs: close the pumping assembly 2, let the liquid in the treatment tank 1 stand still, let the flocs settle naturally, open the solenoid valve 9, let the flocs be discharged through the sewage pipe 8, and the flocs can be cleaned.

[0084] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage purification treatment device using flocculation sedimentation, comprising a treatment tank (1) having an inclined bottom, characterized in that: It also includes a pumping assembly (2), which is installed on both sides of the treatment tank (1) and is used to extract the upper layer of liquid inside the treatment tank (1); A plurality of air intake components (3) are arranged in sequence and are connected to the corresponding water pumping components (2), and are used to inject air into the extracted liquid; A water return pipe (4), which is installed on both sides of the treatment tank (1) and is connected to the corresponding air intake assembly (3); A filter assembly (5) is placed inside the treatment tank (1) and is capable of being adjusted in height relative to the bottom of the treatment tank (1), and each of the pumping assemblies (2) is connected to a corresponding filter assembly (5); A plurality of drainage components (6) are evenly distributed at the bottom of the treatment tank (1); the end of each return pipe (4) is connected to a corresponding drainage component (6) and is used to discharge the liquid extracted by the pumping component (2) from the bottom of the treatment tank (1); Each of the air intake components (3) comprises a connecting pipe (30), the upper end of which is connected to the corresponding pressure dividing pipe (25), and the lower end of which is connected to the corresponding water return pipe (4), and the diameter of the middle part of the connecting pipe (30) is reduced; An air intake hood (31) is sleeved on the outside of the connecting pipe (30), sleeved at a position where the pipe diameter of the connecting pipe (30) is reduced, and the upper end is connected to the air intake pipe (32); A dust cover (33) fixedly mounted on the upper end of the corresponding air inlet pipe (32); An air guide pipe (34) which penetrates through the side wall of the connecting pipe (30) and is connected to the air inlet cover (31); The end surface of the air guide pipe (34) is an inclined surface, and is used to inject air into the liquid flowing through the connecting pipe (30); When the liquid flows rapidly through the connecting tube (30), the inclined end surface of the air guide tube (34) generates a Venturi effect, so that the air in the air inlet hood (31) is drawn into the connecting tube (30) and mixed with the liquid therein; Each of the drainage components (6) comprises a plurality of three-way pipes (60) that are connected in sequence, and the three-way pipes (60) on both sides of each drainage component (6) are connected to the corresponding return pipe (4); Drain pipes (61), which correspond one to one with the three-way pipes (60), and each of the drain pipes (61) is connected to the corresponding three-way pipe (60); The outer side of each drainage pipe (61) is connected to a plurality of obliquely arranged drainage holes (62); A blocking ring (63) fixedly connected to the inner wall of the drain pipe (61) and disposed close to one end of the tee pipe (60); A sealing platform (64) is placed at the upper end of the blocking ring (63) and has a conical bottom, and each sealing platform (64) is coaxial with the corresponding blocking ring (63); a return spring (65) fixedly connected to the upper end of the sealing platform (64), with the upper end in contact with the inside of the drain pipe (61); Each of the filter components (5) comprises a fixed cover (50), which is in communication with the pumping component (2) and has an opening on a side away from the pumping component (2); A filter cotton (51) is placed in the fixed cover (50) and is located close to a position connected to the water pumping assembly (2); A positioning assembly (52), which is arranged at the upper end of the fixed cover (50) and is used to adjust the height of the fixed cover (50) relative to the bottom of the treatment pool (1); The filter components (5) on the left and right sides are symmetrically arranged; A plurality of flip plates (53) are evenly distributed in sequence at the opening of the fixed cover (50), the flip plates (53) are rotatably connected to the fixed cover (50), and the flip plates (53) can only rotate toward a side close to the filter cotton (51); a flocculent discharge pipe (54), which is in communication with the corresponding fixed cover (50) and is used to discharge dirt outside the filter cotton (51); The elastic coefficient of the return spring (65) is limited. When the two water pumps (24) are started at the same time, the liquid in the return pipe (4) pushes the sealing platform (64) to slide upward, so that the liquid enters the drain pipe (61) through the gap between the sealing platform (64) and the blocking ring (63) and is discharged through the drainage hole (62). When only one of the water pumps (24) is started, the return spring (65) pushes the sealing platform (64) and the blocking ring (63) to fit tightly. At this time, the liquid in the return pipe (4) will flow to the side where the water pump (24) is not started, and enter the corresponding filter assembly (5). Subsequently, the reversely flowing liquid will flush the filter cotton (51). In this process, the sewage pushes the flip plate (53) to rotate to close the fixed cover (50). At this time, the refluxed liquid will discharge the large particles adhering to the outside of the filter cotton (51) through the flocculant discharge pipe (54). The water pumps (24) on both sides are started alternately to complete the cleaning work of the filter assemblies (5) on the left and right sides.

2. The sewage purification device using flocculation sedimentation according to claim 1 is characterized in that: Each of the pumping components (2) comprises a plurality of bellows (20), which are sequentially arranged on the outside of the fixed cover (50); A fixed tube (21), each of the bellows (20) is connected to a corresponding fixed tube (21), a valve (22) is connected to the middle thereof, and an upper end of the valve (22) is connected to a medicine storage bottle (23); A water pump (24) which is in communication with a corresponding fixed pipe (21), and whose output end is in communication with a pressure dividing pipe (25), and each of the air intake components (3) is in communication with a corresponding pressure dividing pipe (25); The pumping components (2) on the left and right sides are symmetrically arranged.

3. The sewage purification treatment device using flocculation sedimentation according to claim 1 is characterized in that: The positioning assembly (52) comprises a positioning screw (520) which is fixedly connected to the upper end of the fixed cover (50); A positioning seat (521) which is slidably matched with a corresponding positioning screw (520), and the positioning seat (521) is fixedly connected to the treatment tank (1); A positioning nut (522), which is sleeved on the outside of the corresponding positioning screw (520) and is threadably matched with the corresponding positioning screw (520); The number of the positioning nuts (522) is at least two, and they are respectively placed at the upper and lower ends of the positioning seat (521).

4. The sewage purification treatment device using flocculation sedimentation according to claim 1 is characterized in that: The lower end of the treatment pool (1) is provided with an inclined groove (7), the end of the inclined groove (7) is connected to a sewage discharge pipe (8), and the middle of the sewage discharge pipe (8) is connected to a solenoid valve (9).

5. The treatment method of the sewage purification treatment device using flocculation sedimentation according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Adding flocculant: Adding flocculant into a flocculant storage tank and starting a water pump (24) so ​​that the water pump (24) extracts sewage to be treated in the treatment tank (1), so that the sewage and flocculant are mixed and then flow back into the treatment tank (1) through a drainage component (6); Step 2: flocculation reaction. After the sewage is mixed with the flocculant, a flocculation reaction occurs, so that flocs are generated in the sewage. During this process, the water pump (24) provides kinetic energy for the circulation of the sewage, and the air intake component (3) injects external air into the sewage, so that bubbles are generated in the sewage, thereby improving the mixing effect of the sewage and the flocculant, and causing the generated flocs to float up with the bubbles. Step 3: self-cleaning. Turn off the water pump (24) on one side, and flush water through the return pipe (4) to the filter assembly (5) on the side of the turned-off water pump (24). Turn the closed fixed cover (50) of the flip part to allow the internal dirt to flow out through the flocculent discharge pipe (54). The water pumps (24) on both sides are started and stopped alternately, and the cleaning of the device itself can be completed. Step 4: Cleaning the flocs: close the pumping assembly (2), let the liquid in the treatment tank (1) stand still, and let the flocs settle naturally. Open the solenoid valve (9) and let the flocs be discharged through the sewage pipe (8), and the flocs are cleaned.

Images