Self-cleaning integrated sewage purification treatment device

Abstract

The application discloses a self-cleaning integrated sewage purification treatment device, and belongs to the technical field of sewage treatment and recycling equipment. Mainly comprising a filtering mechanism arranged at the front end of the sewage purification treatment device; an anaerobic mechanism in communication with the output end of the filtering mechanism; an anoxic mechanism in communication with the output end of the anaerobic mechanism; an aerobic mechanism in communication with the output end of the anoxic mechanism, wherein a reflux channel is arranged between the aerobic mechanism and the anoxic mechanism; a membrane reaction mechanism in communication with the output end of the aerobic mechanism, wherein the membrane reaction mechanism has an MBR module; a membrane washing mechanism and a dosing mechanism in communication with the MBR module; and a PLC control system. The self-cleaning integrated sewage purification treatment device can perform biochemical treatment and membrane separation operation on sewage through the biochemical reaction device and the backwashing device, and when the efficiency of the filter membrane decreases, the backwashing device is used for physical flushing and chemical flushing, so that the service life of the filter membrane is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment and reuse equipment, specifically a self-cleaning integrated wastewater purification and treatment device. Background Technology

[0002] Wastewater treatment equipment is an industrial device that can effectively treat domestic sewage in urban areas, preventing sewage and pollutants from flowing directly into water bodies. It is of great significance for improving the ecological environment, enhancing the city's image, and promoting economic development.

[0003] Wastewater treatment methods mainly include physical treatment, chemical treatment, and biological treatment. Physical treatment methods separate and recover insoluble suspended pollutants (including oil films and oil droplets) in wastewater through physical processes. These methods can be divided into gravity separation, centrifugal separation, and filtration. Chemical treatment methods separate and remove dissolved or colloidal pollutants in wastewater or convert them into harmless substances through chemical reactions and mass transfer. Biological treatment methods convert organic pollutants in wastewater in solution, colloidal, and finely suspended states into stable and harmless substances through the metabolic processes of microorganisms.

[0004] Among the many treatment methods, membrane bioreactor (MBR) is a new wastewater treatment process that combines biological treatment technology with membrane separation technology. This method replaces the secondary sedimentation tank in the traditional process. It can efficiently separate solids and liquids to obtain stable reclaimed water that can be used directly. It can also maintain a high concentration of microorganisms in the biological tank. The process produces less residual sludge, effectively removes ammonia nitrogen, and produces effluent with suspended solids and turbidity close to zero. Bacteria and viruses in the effluent are significantly removed. It has low energy consumption and a small footprint.

[0005] In the process of purifying wastewater using membrane bioreactors, activated sludge, microorganisms, and macromolecular organic matter are retained by membrane modules (such as microfiltration membranes and ultrafiltration membranes) to achieve sludge-water separation. However, some polymers and soluble biological products will deposit on the membrane surface, leading to a decrease in membrane flux. If not treated in time, this will seriously affect the wastewater treatment efficiency of the membrane bioreactor. Therefore, it is necessary to provide a self-cleaning integrated wastewater purification device to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a self-cleaning integrated wastewater purification and treatment device to solve the problem of decreased membrane flux caused by the easy accumulation of impurities on the filter membrane of the membrane bioreactor.

[0008] The technical solution adopted by this application to solve its technical problem is as follows: a self-cleaning integrated sewage purification and treatment device, including a filtration mechanism, which is located at the front end of the sewage purification and treatment device for introducing sewage; an anaerobic mechanism, which is connected to the output end of the filtration mechanism; an anoxic mechanism, which is connected to the output end of the anaerobic mechanism; an aerobic mechanism, which is connected to the output end of the anoxic mechanism, and a return channel is provided between the aerobic mechanism and the anoxic mechanism; a membrane reaction mechanism, which is connected to the output end of the aerobic mechanism, and the membrane reaction mechanism has an MBR module for separating sewage; a membrane washing mechanism, which is connected to the MBR module for physically backwashing the MBR module; and a chemical dosing mechanism, which is connected to the MBR module for chemical backwashing the MBR module; the sewage purification and treatment device also includes a PLC control system for coordinated control of the above mechanisms.

[0009] Furthermore, the anaerobic mechanism and the anoxic mechanism are connected to a deodorization system.

[0010] Furthermore, a blower mechanism suitable for supplementing oxygen is provided on one side of the aerobic mechanism. The blower mechanism includes a fan unit, and a blower pipe connects the fan unit to the aerobic mechanism.

[0011] Furthermore, a sludge return port is connected to the output end of the MBR module.

[0012] Furthermore, the filtration mechanism includes a filter base, on which a locking clamp is provided, and on which a filter assembly is installed; the filter assembly includes a cylindrical body fixed to the locking clamp, the cylindrical body having an inlet end and an outlet end, the inlet end being positioned higher than the outlet end; a filter cylinder is placed inside the cylindrical body, the filter cylinder being a cylindrical structure with an open top, multiple sets of filter holes being formed on the peripheral wall of the filter cylinder, the inner wall of the cylindrical body having a step, and a first flange cooperating with the step being provided at the upper end of the filter cylinder; the inlet end is located above the upper opening of the filter cylinder, and a sealing gasket is provided on the filter cylinder at the lower end of the first flange.

[0013] Furthermore, a slide cylinder is slidably installed at the bottom of the cylinder, and a second through hole adapted to the slide cylinder is provided at the bottom of the cylinder; a first through hole is provided at the bottom of the filter cylinder, and the first through hole is adapted to the slide cylinder.

[0014] Furthermore, the filter base is provided with a lifting assembly, which includes a fixing ring sleeved and installed at the bottom of the slide cylinder, a slide rail fixedly installed on the filter base, and one end of the fixing ring slidably disposed on the slide rail; an electric cylinder is fixedly installed at the bottom of the filter base, and the output end of the electric cylinder is connected to the other end of the fixing ring.

[0015] Furthermore, the slide cylinder is provided with a sealing part at the upper end and an open part at the lower end. A first sealing ring and a second sealing ring are fixedly fitted on the slide cylinder from top to bottom. The first sealing ring is used to cooperate with the first through hole at the bottom of the filter cylinder, and the second sealing ring is used to cooperate with the second through hole at the bottom of the cylinder. The slide cylinder has a cavity inside, which is open at the lower end. A wastewater pipe is connected to the lower end opening of the slide cylinder. The slide cylinder is provided with multiple sets of first water passage holes at the position of the open part, which are connected to the cavity.

[0016] Furthermore, the bottom of the filter cylinder is provided with a second flange, the outer diameter of the second flange is matched with the inner lower diameter of the cylinder, and multiple sets of second water passage holes are provided on the second flange;

[0017] A blocking ring is fixedly fitted on the slide cylinder between the first sealing ring and the second sealing ring, and the outer diameter of the blocking ring is larger than the diameter of the first through hole at the bottom of the filter cylinder.

[0018] The operation method of the self-cleaning integrated wastewater purification and treatment device includes the following steps:

[0019] Step 1: Wastewater is introduced through a filtration mechanism, which filters out large particulate impurities.

[0020] Step 2: The wastewater that has completed the initial filtration is sequentially introduced into the anaerobic unit, the anoxic unit, and the aerobic unit to carry out biochemical treatment of the wastewater, thereby achieving the degradation of organic matter, nitrogen removal, and phosphorus removal.

[0021] Step 3: The biologically treated mixture enters the MBR module to achieve efficient solid-liquid separation;

[0022] Step 4: When the MBR module becomes clogged, use the membrane washing mechanism to backwash it.

[0023] Step 5: When the backwashing effect of the membrane washing mechanism is not good, chemical agents are added to the flushing water using the dosing mechanism to chemically flush the MBR module.

[0024] The self-cleaning integrated wastewater purification and treatment device provided in this application has the following beneficial effects:

[0025] 1. By being equipped with a biochemical reaction device and a backwashing device, wastewater can be biochemically treated and separated by membrane. When the filter membrane efficiency decreases, the backwashing device can be used for physical and chemical rinsing to extend the service life of the filter membrane.

[0026] 2. By incorporating a filtration mechanism, large particulate impurities in wastewater can be removed, thus purifying the wastewater and preventing sharp impurity particles from damaging the filter membrane.

[0027] 3. By installing a sliding cylinder at the bottom of the filter tank, the filter mechanism can switch between filtration mode and self-cleaning mode, thereby improving the processing efficiency of the filter device.

[0028] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0030] In the attached diagram:

[0031] Figure 1 This is a 3D model of the self-cleaning integrated wastewater purification and treatment device in this application;

[0032] Figure 2 This is an overall schematic diagram of the self-cleaning integrated wastewater purification and treatment device in this application;

[0033] Figure 3 for Figure 2 A schematic diagram of the overall structure of the biochemical reaction unit;

[0034] Figure 4 for Figure 2 A partial structural diagram at point A in the middle;

[0035] Figure 5 for Figure 3 A schematic diagram of the partial structure at point B in the middle;

[0036] Figure 6 for Figure 2 Overall schematic diagram of the backwashing device;

[0037] Figure 7 for Figure 6 A schematic diagram of the overall structure of the Chinese medicine processing facility;

[0038] Figure 8 for Figure 2 A schematic diagram of the overall structure of the intermediate filtration mechanism;

[0039] Figure 9 for Figure 8 A schematic diagram of the partial structure at point C;

[0040] Figure 10 for Figure 8 Exploded view of the intermediate filter assembly;

[0041] Figure 11 for Figure 10 A schematic diagram of the partial structure at point D;

[0042] The following are the labeling elements in the figure:

[0043] 1. Filter mechanism; 11. Filter base; 12. Locking clamp; 13. Water outlet pipe; 14. Lifting assembly; 141. Slide rail; 142. Electric cylinder; 143. Fixing ring; 15. Wastewater pipe;

[0044] 2. Anaerobic apparatus; 21. Anaerobic reactor; 22. Anaerobic pump; 23. Anaerobic substrate;

[0045] 3. Hypoxia mechanism; 31. Hypoxia reaction vessel; 32. Hypoxia pump;

[0046] 4. Aerobic mechanism; 41. Aerobic reaction vessel; 42. Aerobic pump; 43. Aerobic base;

[0047] 5. Membrane reaction mechanism; 51. MBR module; 52. Membrane inlet pipe; 53. First backflush pipe;

[0048] 6. Blower mechanism; 61. Fan unit; 62. Blower duct;

[0049] 7. Membrane washing mechanism; 71. First water tank; 72. Second backflushing pipe; 73. Backflushing pump;

[0050] 8. Dosing mechanism; 81. Second water tank; 82. Dosing rack; 83. Dosing cylinder; 84. Dosing pipe; 85. Dosing pump; 86. Mixing cylinder; 87. Stirring section; 88. Clean water pipe;

[0051] 9. Filter assembly; 91. Cylinder; 911. Water inlet; 912. Step; 92. Cover; 93. Slide cylinder; 931. First water passage hole; 932. Sealing part; 933. Opening part; 934. First sealing ring; 935. Second sealing ring; 95. Filter cylinder; 951. First flange; 952. Filter hole; 953. Second flange; 954. Second water passage hole; 98. Barrier ring. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0054] like Figure 1 - Figure 2 As shown, this application provides a self-cleaning integrated wastewater purification and treatment device, belonging to wastewater treatment and reuse equipment. It includes a biochemical reaction device and a backwashing device. The biochemical reaction device is used to introduce wastewater into the integrated wastewater purification and treatment device and to export the treated clean water. The backwashing device is mainly used to perform backwashing operations on key components of the integrated wastewater purification and treatment device. Specifically:

[0055] like Figure 2 - Figure 3 and Figure 5 As shown, the biochemical reaction device includes an anaerobic mechanism 2, an anoxic mechanism 3, and an aerobic mechanism 4 arranged in sequence. The anaerobic mechanism 2 includes an anaerobic seat 23, on which an anaerobic pump 22 is fixedly installed. The input end of the anaerobic pump 22 is connected to an outlet pipe 13, which is connected to a sewage source. At the same time, an anaerobic reaction tank 21 is fixedly installed on the anaerobic seat 23, and the anaerobic reaction tank 21 is connected to the output end of the anaerobic pump 22. Thus, through the action of the anaerobic pump 22, sewage can be introduced into the anaerobic reaction tank 21.

[0056] It should be noted that the anaerobic reactor 21 is equipped with anaerobic microorganisms, such as acid-producing bacteria and methanogenic bacteria, and the dissolved oxygen in the anaerobic reactor 21 is close to zero. Thus, the anaerobic microorganisms decompose complex organic matter (such as proteins and polysaccharides) into simple organic matter (such as volatile fatty acids, methane, and carbon dioxide) through hydrolysis, acidification, and methanation processes. At the same time, polyphosphate-accumulating bacteria decompose polyphosphates in their bodies under anaerobic conditions, releasing phosphates into the water. Furthermore, anaerobic treatment can improve the biodegradability of wastewater and reduce the load on subsequent treatment units.

[0057] like Figure 2 - Figure 3As shown, the anoxic mechanism 3 includes an anoxic seat (not shown in the figure), on which anoxic pump 32 is fixedly installed. The input end of the anoxic pump 32 is connected to the output end of the anaerobic reactor 21. At the same time, anoxic reactor 31 is fixedly installed on the anoxic seat, and the anoxic reactor 31 is connected to the output end of the anoxic pump 32. Thus, through the action of the anoxic pump 32, the sewage in the anaerobic reactor 21 can be introduced into the anoxic reactor 31.

[0058] It should be noted that the anoxic reaction tank 31 is equipped with anoxic microorganisms, such as denitrifying bacteria. These anoxic microorganisms use organic matter in the wastewater as electron donors and returned nitrates as electron acceptors to reduce them into nitrogen gas that escapes to the water surface.

[0059] Meanwhile, a deodorization system is connected to the anaerobic reactor 21 and the anoxic reactor 31 to purify the odor generated during the reaction process.

[0060] Continue to refer to Figure 2 - Figure 3 The aerobic mechanism 4 includes an aerobic seat 43, on which an aerobic pump 42 is fixedly installed. The input end of the aerobic pump 42 is connected to the output end of the anoxic reaction tank 31. At the same time, an aerobic reaction tank 41 is fixedly installed on the aerobic seat 43. The aerobic reaction tank 41 is connected to the output end of the aerobic pump 42. Thus, through the action of the aerobic pump 42, the wastewater in the anoxic reaction tank 31 can be introduced into the aerobic reaction tank 41.

[0061] It should be noted that aerobic microorganisms are installed in the aerobic reaction tank 41. The aerobic microorganisms can decompose the remaining organic matter. The nitrifying bacteria in the aerobic microorganisms oxidize ammonia nitrogen into nitrate, while polyphosphate bacteria oxidize PHB under aerobic conditions. They use the energy generated to absorb excess phosphate in the water and synthesize polyphosphate, which is stored in their bodies, thus achieving phosphorus removal.

[0062] Furthermore, a reflux channel is provided between the anoxic reaction tank 31 and the aerobic reaction tank 41, so that the nitrates produced in the aerobic stage can enter the anoxic reaction tank 31 through the reflux channel to replenish the nitrates in the anoxic reaction tank 31.

[0063] More preferably, a blower mechanism 6 is provided on one side of the aerobic seat 43. The blower mechanism 6 includes a blower unit 61, and a blower pipe 62 is connected between the blower unit 61 and the aerobic reaction tank 41, so that oxygen can be supplemented to the aerobic reaction tank 41 through the blower unit 61.

[0064] In this application, the anaerobic unit 2, the anoxic unit 3, and the aerobic unit 4 are all modularly designed and can be configured according to the wastewater treatment volume and the size of the site to meet different wastewater treatment needs.

[0065] like Figure 2 and Figure 4 As shown, a membrane reaction mechanism 5 is connected to the output end of the aerobic reaction tank 41. The membrane reaction mechanism 5 includes a membrane inlet pipe 52 connected to the output end of the aerobic reaction tank 41. The other end of the membrane inlet pipe 52 is connected to an MBR module 51. Driven by the internal transmembrane pressure difference, water molecules and small molecules pass through the membrane pores of the MBR module 51, while suspended solids, colloids and microorganisms are retained, thereby realizing the degradation of organic matter and the separation of mud and water.

[0066] It should be noted that an ultraviolet or sodium hypochlorite disinfection system can be installed at the outlet of the MBR module 51 to kill pathogenic microorganisms, ensure the safety of recycled water, and the quality of the effluent after disinfection can meet the industrial water standards and can be directly used for landscaping, greening, etc.

[0067] Furthermore, a sludge return port (not shown in the figure) is also provided on the MBR module 51. This sludge return port is used to return part of the sludge to the biochemical reactor by pump to maintain the amount of microorganisms in the biochemical reactor. The excess sludge is concentrated, dewatered and then transported off-site for disposal.

[0068] like Figure 2 and Figure 6 - Figure 7 As shown, the backwashing device includes a membrane washing mechanism 7, which is used for backwashing the MBR module 51. The membrane washing mechanism 7 includes a first water tank 71, which contains clean water. A second backwash pipe 72 is connected to the first water tank 71, and a backwash pump 73 is connected to the second backwash pipe 72. The backwash pump 73 is adapted to drain the clean water in the first water tank 71.

[0069] Meanwhile, a first backwash pipe 53 is connected to the output end of the backwash pump 73. The first backwash pipe 53 is connected to the MBR module 51, so that the clean water drawn out from the first water tank 71 will enter the MBR module 51 through the first backwash pipe 53 to perform physical backwash cleaning on the MBR module 51.

[0070] When the effect of physical backwashing decreases, chemical backwashing is required. Therefore, the backwashing device also includes a dosing mechanism 8, which includes a second water tank 81 containing clean water. A dosing rack 82 is provided on one side of the second water tank 81, and at least two sets of dosing cylinders 83 are provided on the dosing rack 82. The multiple sets of dosing cylinders 83 contain different kinds of chemical agents, which can perform various washings such as alkaline washing and acid washing on the MBR module 51.

[0071] A clean water pipe 88 is connected to the outlet end of the second water cylinder 81, and a dosing pipe 84 is connected to the outlet end of the dosing cylinder 83. The dosing pipe 84 is connected to the clean water pipe 88, and a dosing pump 85 is installed on the clean water pipe 88, so that the mixture of chemical agent and water can be discharged through the dosing pump 85.

[0072] Meanwhile, a mixing cylinder 86 is connected to the output end of the dosing pump 85. The mixing cylinder 86 is used to mix multiple chemical agents. The output end of the mixing cylinder 86 is connected to the first backflushing pipe 53, so that the chemical agents can be introduced into the MBR module 51 and backflushed.

[0073] In this embodiment, each of the multiple dosing cylinders 83 is equipped with a stirring section 87 to ensure that the chemical reagents in the dosing cylinders 83 are stirred evenly to prevent precipitation.

[0074] To extend the service life of MBR module 51 and prevent sharp impurities in the wastewater from puncturing the filter membrane, such as... Figure 2 and Figure 8 As shown, a filter mechanism 1 is installed on the water outlet pipe 13. The filter mechanism 1 is used to remove large particulate impurities from the sewage.

[0075] like Figure 8 - Figure 11 As shown, the filter mechanism 1 includes a filter seat 11, a locking clamp 12 is provided on the filter seat 11, and a filter assembly 9 is installed on the locking clamp 12.

[0076] The filter assembly 9 includes a cylinder 91 fixed on the locking clamp 12. The cylinder 91 has a water inlet end 911 and a water outlet end (not shown in the figure). The water outlet end is connected to the water outlet pipe 13. In this embodiment, the position of the water inlet end 911 is higher than the position of the water outlet end so that the water entering the cylinder 91 can flow out quickly.

[0077] like Figure 9 - Figure 10 As shown, a filter cylinder 95 is placed inside the cylinder 91. The filter cylinder 95 is a cylindrical structure with an open top. Multiple sets of filter holes 952 are opened on the peripheral wall of the filter cylinder 95. The cylinder 91 is a cylindrical structure with a larger top and a smaller bottom, thus forming a step 912 on the inner wall of the cylinder 91. A first flange 951 that cooperates with the step 912 is provided at the upper end of the filter cylinder 95. The filter cylinder 95 can be placed inside the cylinder 91 by cooperating with the first flange 951 and the step 912.

[0078] In this embodiment, when the filter cartridge 95 is placed in the cylinder 91, the water inlet end 911 is located above the opening at the upper end of the filter cartridge 95, and a sealing gasket is provided at the lower end of the first flange 951 on the filter cartridge 95 so that after the filter cartridge 95 is placed, water will not seep into the lower end of the cylinder 91 from the joint between the first flange 951 and the step 912.

[0079] In summary, when filtering wastewater, the wastewater enters the upper part of the cylinder 91 through the inlet 911, enters the filter cylinder 95 through the opening at the upper end of the filter cylinder 95, flows out through the filter hole 952, enters the lower part of the cylinder 91, and then flows out through the outlet.

[0080] During the process of sewage flowing out of the filter cartridge 95, large particulate impurities in the water are filtered through the filter holes 952, thereby purifying the impurities in the sewage and preventing sharp impurity particles from damaging the filter membrane.

[0081] In this embodiment, in order to seal the cylinder 91, a cover 92 is detachably installed on the upper end of the cylinder 91 by fasteners, and a sealing gasket is provided at the contact point between the cover 92 and the cylinder 91, thereby achieving a better sealing effect. At the same time, after the filter cylinder 95 has been used for a long time, the cover 92 can be opened to clean or replace the filter cylinder 95, so as to achieve a better effect of purifying sewage.

[0082] like Figure 9 - Figure 11 As shown, a slide cylinder 93 is slidably installed at the bottom of the cylinder 91, and a second through hole (not shown in the figure) adapted to the slide cylinder 93 is provided at the bottom of the cylinder 91, so that the slide cylinder 93 can slide up and down in the first through hole;

[0083] Meanwhile, a first through hole (not shown in the figure) is provided at the bottom of the filter cylinder 95. This first through hole is also adapted to the slide cylinder 93, so that the slide cylinder 93 can enter the interior of the filter cylinder 95.

[0084] In order to drive the up and down sliding of the slide cylinder 93, a lifting assembly 14 is provided on the filter base 11, specifically:

[0085] like Figure 8 - Figure 9 As shown, the lifting assembly 14 includes a fixing ring 143 sleeved and installed at the bottom of the slide cylinder 93, and a slide rail 141 fixedly installed on the filter seat 11. One end of the fixing ring 143 is slidably disposed on the slide rail 141, so that the fixing ring 143 can drive the slide cylinder 93 to move synchronously along the slide rail 141 in the vertical direction.

[0086] Meanwhile, an electric cylinder 142 is fixedly installed at the bottom of the filter base 11. The output end of the electric cylinder 142 is connected to the other end of the fixed ring 143, so that the extension or retraction of the output end of the electric cylinder 142 can drive the slide cylinder 93 to move synchronously.

[0087] Because the stroke of the electric cylinder 142 is limited, the slide cylinder 93 has extreme positions in both its up and down movements. For ease of explanation, the slide cylinder 93 at the upper extreme position is defined as the upper extreme position, and the slide cylinder 93 at the lower extreme position is defined as the lower extreme position.

[0088] like Figure 9 - Figure 11 As shown, a sealing part 932 is provided at the upper end and an open part 933 is provided at the lower end on the slide cylinder 93. A first sealing ring 934 and a second sealing ring 935 are fixedly sleeved on the slide cylinder 93 at the position of the sealing part 932 from top to bottom. The first sealing ring 934 is used to cooperate with the first through hole at the bottom of the filter cylinder 95 and seal the bottom of the filter cylinder 95. The second sealing ring 935 is used to cooperate with the second through hole at the bottom of the cylinder 91 and seal the bottom of the cylinder 91.

[0089] Furthermore, a cavity (not shown in the figure) is provided inside the slide cylinder 93. The cavity is open at the lower end. The lower end of the slide cylinder 93 is connected to the wastewater pipe 15. At the same time, multiple sets of first water passage holes 931 that communicate with the cavity are provided at the open part 933 on the slide cylinder 93.

[0090] In summary, in the initial state, the slide 93 is in the lower limit position. At this time, the position of the open part 933 on the slide 93 is outside the cylinder 91. The first sealing ring 934 seals the first through hole at the bottom of the filter cylinder 95, and the second sealing ring 935 seals the second through hole at the bottom of the cylinder 91. Since the first flange 951 is sealed and overlapped on the step 912, the water entering the cylinder 91 first enters the filter cylinder 95, and after being filtered by the filter hole 952, it enters the lower end of the cylinder 91.

[0091] At this time, because the first through hole is sealed, water can only flow out from the outlet end on the cylinder 91 and enter the outlet pipe 13, thus realizing the normal output and filtration of sewage. This state can also be called the filtration state of the filter cylinder 95.

[0092] When the filter cartridge 95 needs to be cleaned, the lifting assembly 14 drives the slide 93 to the upper limit position. At this time, the upper opening 933 of the slide 93 enters the interior of the cylinder 91 and drives the first water passage hole 931 to enter the interior of the cylinder 91 at the same time. At this time, the position of the first water passage hole 931 is lower than the position of the water outlet end, so that the water entering the bottom of the cylinder 91 can enter the internal cavity of the slide 93 through the first water passage hole 931 and be discharged from the bottom opening of the slide 93 through the wastewater pipe 15.

[0093] At the same time, due to the movement of the slide cylinder 93, the first sealing ring 934 and the first through hole, as well as the second sealing ring 935 and the second through hole, are both out of the sealing state;

[0094] In this embodiment, a second flange 953 is provided at the bottom of the filter cylinder 95. The outer diameter of the second flange 953 matches the inner lower diameter of the cylinder 91, so that the second flange 953 can be sealed and connected to the inner lower end of the cylinder 91. At the same time, multiple sets of second water passage holes 954 are opened on the second flange 953. The second water passage holes 954 are used to transport water from the upper end of the cylinder 91 to the lower end of the cylinder 91.

[0095] Furthermore, a blocking ring 98 is fixedly sleeved on the slide cylinder 93 at a position between the first sealing ring 934 and the second sealing ring 935. The outer diameter of the blocking ring 98 is larger than the diameter of the first through hole at the bottom of the filter cylinder 95, so that the filter cylinder 95 can be lifted up by the blocking ring 98 during the process of the slide cylinder 93 rising.

[0096] In this embodiment, when the slide 93 reaches the upper limit position, the filter 95 is lifted up, and its upper opening passes the position of the water inlet 911 and is located above the water inlet 911. As a result, the water entering the cylinder 91 from the water inlet 911 cannot enter the interior of the filter 95 from the upper opening of the filter 95. Instead, it will be injected into the cylinder 91 from the outer side of the filter 95. That is, the water is directly injected at the upper end of the second flange 953.

[0097] Because of the second water passage hole 954 provided on the second flange 953, although the second water passage hole 954 can slowly drain water and discharge it through the first water passage hole 931 on the slide 93, the second water passage hole 954 is too small to completely drain the water injected into the cylinder 91. As a result, the water will accumulate at the upper end of the second flange 953 and enter the interior of the filter cylinder 95 from the outside of the filter cylinder 95 through the filter hole 952.

[0098] During the process of water entering the filter hole 952 from the outside of the filter cartridge 95, the filter hole 952 is actually backwashed, thereby realizing the self-cleaning of the filter cartridge 95, which in turn extends the high-efficiency filtration time of the filter cartridge 95 and reduces the frequency of disassembly and cleaning of the filter cartridge 95.

[0099] After the filter cartridge 95 has been cleaned for a period of time, switch the filter cartridge 95 to the filtration state to perform normal filtration work.

[0100] This application also includes a PLC control system to control the coordinated operation of the aforementioned electrical components, thereby achieving the purpose of intelligent purification.

[0101] This application also provides a method for using the integrated wastewater purification and treatment device, specifically:

[0102] Step 1: Wastewater is introduced through filter mechanism 1, and large particulate impurities are filtered out through filter mechanism 1.

[0103] Step 2: The wastewater that has completed the preliminary filtration is sequentially introduced into the anaerobic unit 2, the anoxic unit 3, and the aerobic unit 4 to carry out biochemical treatment of the wastewater, thereby achieving the degradation of organic matter, nitrogen removal, and phosphorus removal.

[0104] Step 3: The biologically treated mixture enters the MBR module 51 to achieve efficient solid-liquid separation;

[0105] Step 4: When the MBR module 51 becomes clogged, the membrane washing mechanism 7 is used to backwash it.

[0106] Step 5: When the backwashing effect of the membrane washing mechanism 7 is not good, chemical agents are added to the flushing water by the dosing mechanism 8 to chemically flush the MBR module 51.

[0107] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A self-cleaning integrated wastewater purification and treatment device, characterized in that: include: A filtration mechanism (1) is installed at the front end of the wastewater purification treatment device for introducing wastewater; Anaerobic mechanism (2), which is connected to the output end of the filter mechanism (1); An anoxic mechanism (3) is connected to the output end of the anaerobic mechanism (2); An aerobic mechanism (4) is connected to the output end of the hypoxic mechanism (3), and a reflux channel is provided between the aerobic mechanism (4) and the hypoxic mechanism (3); A membrane reaction unit (5) is connected to the output end of the aerobic unit (4), and the membrane reaction unit (5) has an MBR module (51) for separating wastewater. A membrane washing mechanism (7) is connected to the MBR module (51) and is used to perform physical backwashing on the MBR module (51). A dosing mechanism (8) is connected to the MBR module (51) and is used to perform chemical backwashing on the MBR module (51); The wastewater purification and treatment device also includes a PLC control system for coordinated control of the aforementioned mechanisms. The filter mechanism (1) includes a filter seat (11), a locking clamp (12) is provided on the filter seat (11), and a filter assembly (9) is installed on the locking clamp (12). The filter assembly (9) includes a cylindrical body (91) fixed on the locking clamp (12), the cylindrical body (91) having a water inlet end (911) and a water outlet end, the water inlet end (911) being positioned higher than the water outlet end; The filter cylinder (95) is placed inside the cylinder (91). The filter cylinder (95) is a cylindrical structure with an open top. Multiple sets of filter holes (952) are opened on the peripheral wall of the filter cylinder (95). The inner wall of the cylinder (91) has a step (912). The upper end of the filter cylinder (95) is provided with a first flange (951) that cooperates with the step (912). The water inlet (911) is located above the opening at the upper end of the filter cylinder (95), and a sealing gasket is provided on the filter cylinder (95) at the lower end of the first flange (951). A slide cylinder (93) is slidably installed at the bottom of the cylinder (91), and a second through hole adapted to the slide cylinder (93) is provided at the bottom of the cylinder (91). The bottom of the filter cylinder (95) is provided with a first through hole, which is adapted to the slide cylinder (93); The filter seat (11) is provided with a lifting assembly (14), the lifting assembly (14) includes a fixing ring (143) sleeved and installed at the bottom of the slide cylinder (93), and a slide rail (141) is fixedly installed on the filter seat (11), one end of the fixing ring (143) is slidably disposed on the slide rail (141); An electric cylinder (142) is fixedly installed at the bottom of the filter seat (11), and the output end of the electric cylinder (142) is connected to the other end of the fixing ring (143). The slide cylinder (93) is provided with a sealing part (932) at the upper end and an open part (933) at the lower end. A first sealing ring (934) and a second sealing ring (935) are fixedly sleeved on the slide cylinder (93) from top to bottom. The first sealing ring (934) is used to cooperate with the first through hole at the bottom of the filter cylinder (95), and the second sealing ring (935) is used to cooperate with the second through hole at the bottom of the cylinder body (91). The slide cylinder (93) has an internal cavity with an opening at the lower end. A wastewater pipe (15) is connected to the lower opening of the slide cylinder (93). The slide cylinder (93) has multiple sets of first water passage holes (931) that communicate with the cavity at the position of the open part (933). The bottom of the filter cylinder (95) is provided with a second flange (953), the outer diameter of the second flange (953) matches the inner lower diameter of the cylinder (91), and multiple sets of second water passage holes (954) are opened on the second flange (953). A blocking ring (98) is fixedly sleeved on the slide cylinder (93) between the first sealing ring (934) and the second sealing ring (935). The outer diameter of the blocking ring (98) is larger than the diameter of the first through hole at the bottom of the filter cylinder (95).

2. The self-cleaning integrated wastewater purification and treatment device according to claim 1, characterized in that: The anaerobic mechanism (2) and the anoxic mechanism (3) are connected to a deodorization system.

3. The self-cleaning integrated sewage purification and treatment device according to claim 2, characterized in that: The aerobic mechanism (4) is provided with a blower mechanism (6) suitable for supplementing oxygen on one side. The blower mechanism (6) includes a fan unit (61) and a blower pipe (62) is connected between the fan unit (61) and the aerobic mechanism (4).

4. The self-cleaning integrated wastewater purification and treatment device according to claim 3, characterized in that: The output end of the MBR module (51) is connected to a sludge return port.

5. The operation method of the self-cleaning integrated sewage purification and treatment device according to claim 1, characterized in that: Includes the following steps: Step 1: Wastewater is introduced through the filtration mechanism (1) and large particulate impurities are filtered through the filtration mechanism (1); Step 2: The wastewater that has been preliminarily filtered is sequentially introduced into the anaerobic unit (2), the anoxic unit (3), and the aerobic unit (4) to carry out biochemical treatment of the wastewater, thereby achieving organic matter degradation, nitrogen removal, and phosphorus removal. Step 3: The biologically treated mixture enters the MBR module (51) to achieve efficient solid-liquid separation; Step 4: When the MBR module (51) becomes clogged, the membrane washing mechanism (7) is used to backwash it. Step 5: When the backwashing effect of the membrane washing mechanism (7) is not good, chemical agents are added to the flushing water by the dosing mechanism (8) to chemically flush the MBR module (51).

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