Integrated sewage treatment equipment

Abstract

The integrated sewage treatment equipment comprises a box body, and an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank are sequentially arranged in the box body; a first hydraulic circulation mechanism and a first microbial carrier mechanism are arranged in the anaerobic tank, first microorganisms are arranged in the anaerobic tank, and the anaerobic tank is not communicated with the outside during operation; a second hydraulic circulation mechanism, a second microbial carrier mechanism and an oxygenation mechanism are arranged in the aerobic tank, and second microorganisms are arranged in the aerobic tank; a first stirring mechanism is arranged in the anoxic tank, a nitrification liquid backflow mechanism is arranged between the anoxic tank and the aerobic tank, and third microorganisms are arranged in the anoxic tank; a second stirring mechanism is arranged in the sedimentation tank, an overflow mechanism is arranged between the sedimentation tank and the aerobic tank, and an activated sludge backflow mechanism is arranged between the sedimentation tank and the anaerobic tank. Methane in gas is efficiently decomposed, methane generation is reduced, and environmental pressure is reduced; meanwhile, zero discharge of sludge is realized, the treatment performance is stable and reliable, and the service life is long.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to an integrated sewage treatment equipment. BACKGROUND

[0002] The existing sewage treatment equipment has the following problems:

[0003] 1. The gas generated in the wastewater treatment process is discharged after organized waste gas treatment for the gas with odor, and is directly discharged into the atmosphere for the gas with light odor and no renewable value;

[0004] In particular, the gas mainly containing methane generated in the anaerobic section (the greenhouse effect of methane is 20-30 times that of carbon dioxide); if the amount of these gases is large, they can be collected for energy recycling, but for the gas generated by low-concentration or dispersed sewage, they are directly discharged into the atmosphere, thereby increasing the greenhouse effect of the environment;

[0005] 2. The residual activated sludge after wastewater treatment is inevitably generated, and a large amount of it is usually handed over to other qualified units for secondary treatment or resource utilization, and a small amount of it can be landfilled, and for some dispersed sewage sites, the residual sludge becomes waste and causes secondary pollution to the environment.

[0006] Therefore, in order to solve the above problems, it is necessary to develop an integrated sewage treatment equipment, which can efficiently decompose methane in the gas, reduce the generation of methane, and reduce the environmental pressure; at the same time, the sludge is consumed by the endogenous to achieve sludge zero discharge, the treatment performance is stable and reliable, and the service life is long. SUMMARY

[0007] To solve the above problems, the technical scheme adopted by the present application is as follows:

[0008] An integrated sewage treatment equipment, characterized by comprising a box body, an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank are sequentially arranged in the box body in the direction of wastewater treatment flow, the anaerobic tank, the anoxic tank, the aerobic tank and the sedimentation tank are structures with openings at the top and continuous sealing around and at the bottom;

[0009] The anaerobic tank is provided with a first hydraulic circulation mechanism and a first microbial carrier mechanism, the bottom of the anaerobic tank and the anoxic tank is communicated, the anaerobic tank is provided with a first microorganism, and the anaerobic tank is not communicated with the outside during operation;

[0010] The first microorganism grows and iterates in the anaerobic tank by the first microbial carrier mechanism, and the first microorganism comprises methanotroph and anaerobic bacteria;

[0011] The aerobic tank is provided with a second hydraulic circulation mechanism, a second microbial carrier mechanism and an oxygenation mechanism, and the aerobic tank is provided with a second microorganism.

[0012] The second microorganism adheres to the aerobic tank through a second microorganism carrier mechanism, and the second microorganism includes nitrifying bacteria and nitrosifying bacteria;

[0013] The first and second hydraulic circulation mechanisms each include an inner sealing plate, a lifting pump, a gas guide pipe and a plurality of flow guide pipes;

[0014] The inner sealing plate divides the tank cavity of the anaerobic tank and the aerobic tank into an upper tank cavity and a lower tank cavity, and the inner sealing plate is provided with a gas discharge hole, and the gas discharge hole is provided with the gas guide pipe;

[0015] The lifting pump is located in the lower tank cavity and is connected to the middle part of the inner sealing plate, and the lifting pump is used to lift the sewage in the lower tank cavity to the upper tank cavity;

[0016] The plurality of flow guide pipes are distributed around the outer side of the lifting pump, one end of the flow guide pipe is located in the upper tank cavity and is lower than the gas guide pipe, and the other end extends to above the tank bottom through the inner sealing plate, and the flow guide pipe makes the sewage in the upper tank cavity flow into the bottom of the lower tank cavity by gravity;

[0017] The anoxic tank is provided with a first stirring mechanism, the anoxic tank and the aerobic tank are provided with a nitrated liquid reflux mechanism, and the anoxic tank is provided with third microorganisms including denitrifying bacteria;

[0018] The sedimentation tank is provided with a second stirring mechanism, the sedimentation tank and the aerobic tank are provided with an overflow mechanism, and the sedimentation tank and the anaerobic tank are provided with an activated sludge reflux mechanism.

[0019] Preferably, the first and second microorganism carrier mechanisms each include a plurality of microorganism carrier assemblies, and the microorganism carrier assemblies are detachably arranged in the lower tank cavity of the anaerobic tank or the aerobic tank through connecting pieces.

[0020] Preferably, the microorganism carrier assembly includes upper and lower supporting frames arranged oppositely, and a plurality of microorganism filler ropes respectively connected to the supporting frames at two ends, and the supporting frames are detachably connected to the lower tank cavity of the anaerobic tank or the aerobic tank through connecting pieces.

[0021] Preferably, the first and second stirring mechanisms each include a stirring shaft, a stirring motor and a stirring paddle, one end of the stirring shaft extends to the outside of the anoxic tank or the sedimentation tank and is connected to the driving end of the stirring motor, and the other end is connected to the stirring paddle;

[0022] The stirring motor is connected to the anoxic tank or the sedimentation tank;

[0023] The aerobic tank is communicated with the anoxic tank through the nitrated liquid reflux mechanism, and the aerobic tank is communicated with the sedimentation tank through the overflow mechanism.

[0024] Preferably, the nitration liquid reflux mechanism comprises a reflux pipe and a first downpipe;

[0025] The first downpipe is sleeved outside the stirring shaft of the first stirring mechanism, one end of the first downpipe is connected with the inner wall of the upper end of the anoxic tank through a flange, and the other end extends above the stirring paddle and is open.

[0026] The upper tank cavity of the aerobic tank is communicated with the first downpipe through the reflux pipe, and a first electromagnetic valve is arranged on the reflux pipe.

[0027] Preferably, the overflow mechanism comprises an overflow pipe and a second downpipe;

[0028] The second downpipe is sleeved outside the stirring shaft of the second stirring mechanism, one end of the second downpipe is connected with the inner wall of the upper end of the sedimentation tank through a flange, and the other end extends above the stirring paddle and is open.

[0029] The upper tank cavity of the aerobic tank is communicated with the second downpipe through the overflow pipe, and a second electromagnetic valve is arranged on the overflow pipe.

[0030] Preferably, the oxygenation mechanism comprises a low-pressure fan, an air inlet pipe and a membrane filament aerator, and the low-pressure fan is arranged outside the box body.

[0031] The air inlet end of the air inlet pipe is connected with the low-pressure fan, and the other end extends into the upper end of the flow guide pipe and is connected with the membrane filament aerator.

[0032] Preferably, the activated sludge reflux mechanism comprises a sewage submersible pump and a sewage return pipe.

[0033] The sewage submersible pump is arranged at the bottom of the sedimentation tank, one end of the sewage return pipe is connected with the sewage submersible pump, and the other end is connected with the water inlet of the anaerobic tank; and a third electromagnetic valve is arranged on the sewage return pipe.

[0034] Preferably, the flow guide pipe, the lifting pump and the air guide pipe are connected with the inner sealing plate through flanges, and a support frame is arranged on the side of the inner sealing plate facing the lower tank cavity, and a high-efficiency sedimentation honeycomb inclined pipe can be selectively mounted on the support frame.

[0035] Compared with the prior art, the beneficial effects of the present application are as follows:

[0036] 1. The anaerobic tank is operated in a closed manner, methane generated is circulated to the water body through water-gas mixing, and is decomposed by adding methanotrophs, the greenhouse effect of the final gas phase product carbon dioxide is less than 1 / 20 of that of methane, the circulation and decomposition of methane are realized, the generation of methane is reduced, and the environmental pressure is reduced.

[0037] 2. The sludge generated at the end of the wastewater treatment is all returned to the front end for anaerobic solubilization and digestion, and sludge zero discharge is realized.

[0038] 3. The sewage treatment performance is stable and reliable, and the service life is long.

[0039] 4. The sewage treatment equipment forms a process which can be applied to large sewage treatment projects with building structures as volume.

[0040] 5. The equipment is designed through linkage control of pump and valve, and each process section parameter is coordinately controllable, the flow is simple, and the sewage quality range is wide. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a perspective structural schematic view of the present application;

[0042] Figure 2 It is a top view of the present application;

[0043] Figure 3 It is a front view of the present application

[0044] Figure 4 It is Figure 2 It is a sectional structural schematic view of A-A;

[0045] Figure 5 It is Figure 4 It is a structural schematic view of hidden microbial carrier mechanism;

[0046] Figure 6 It is Figure 2 It is a sectional structural schematic view of B-B (hidden microbial carrier mechanism);

[0047] Figure 7 It is Figure 4 It is a structural schematic view of internal structure of anaerobic tank;

[0048] Figure 8 It is Figure 3 It is a sectional structural schematic view of C-C;

[0049] In which: the box 1, the first hydraulic circulation mechanism 2, the first microbial carrier mechanism 3, the second hydraulic circulation mechanism 4, the second microbial carrier mechanism 5, the oxygenation mechanism 6, the first stirring mechanism 7, the nitrification liquid reflux mechanism 8, the second stirring mechanism 9, the overflow mechanism 10, the activated sludge reflux mechanism 20, the flange 30, the support frame 40, the anaerobic tank 11, the anoxic tank 12, the aerobic tank 13, the sedimentation tank 14, the sealing plate 21, the lifting pump 22, the air guide pipe 23, the flow guide pipe 24, the microbial carrier assembly 31, the connecting piece 32, the low-pressure fan 61, the air inlet pipe 62, the membrane filament aeration disc 63, the stirring shaft 71, the stirring paddle 72, the reflux pipe 81, the first sewage pipe 82, the first electromagnetic valve 83, the upper tank cavity 100, the lower tank cavity 200, the overflow pipe 101, the second sewage pipe 102, the second electromagnetic valve 103, the sewage pump 201, the sewage pipe 202, the third electromagnetic valve 203, the support 311, the microbial filler rope 312. Detailed Implementation

[0050] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0051] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] The present invention will now be further described with reference to the accompanying drawings and specific embodiments:

[0054] like Figures 1-8 As shown, an integrated sewage treatment device includes a box 1. Inside the box 1, an anaerobic tank 11, an anoxic tank 12, an aerobic tank 13 and a sedimentation tank 14 are arranged sequentially in the direction of sewage flow. The anaerobic tank 11, anoxic tank 12, aerobic tank 13 and sedimentation tank 14 are structures with openings at the top and continuous closures on the sides and bottom.

[0055] The anaerobic tank 11 is equipped with a first hydraulic circulation mechanism 2 and a first microbial carrier mechanism 3. The bottom of the anaerobic tank 11 is connected to the anoxic tank 12. The anaerobic tank 11 is equipped with a first microorganism (not shown in the figure). The anaerobic tank 11 is not connected to the outside when it is in operation.

[0056] The first microorganism attaches to the anaerobic tank 11 through the first microbial carrier mechanism 3 and grows and iterates. The first microorganism includes methanophiles and anaerobic bacteria.

[0057] The aerobic tank 13 is equipped with a second hydraulic circulation mechanism 4, a second microbial carrier mechanism 5, and an oxygenation mechanism 6. The aerobic tank 13 is also equipped with a second microorganism (not shown in the figure).

[0058] The second microorganism adheres to the aerobic tank 13 by the second microorganism carrier mechanism 5, and the second microorganism includes nitrifying bacteria and nitrosifying bacteria;

[0059] The first hydraulic circulation mechanism 2 and the second hydraulic circulation mechanism 4 each include an inner sealing plate 21, a lifting pump 22, an air guide pipe 23, and a plurality of flow guide pipes 24;

[0060] The inner sealing plate 21 divides the tank cavities of the anaerobic tank 11 and the aerobic tank 13 into an upper tank cavity 100 and a lower tank cavity 200, and the inner sealing plate 21 is provided with an air exhaust hole and the air guide pipe 23 is arranged on the air exhaust hole;

[0061] The lifting pump 22 is arranged in the lower tank cavity 200, and the lifting pump 22 is connected to the middle part of the inner sealing plate 21, and the lifting pump 22 is used to lift the sewage in the lower tank cavity 200 to the upper tank cavity 100;

[0062] The plurality of flow guide pipes 24 are arranged around the outer side of the lifting pump 22, one end of the flow guide pipe 24 is arranged in the upper tank cavity 100 and is lower than the air guide pipe 23, and the other end of the flow guide pipe 24 extends to above the bottom of the tank through the inner sealing plate 21, and the flow guide pipe 24 makes the sewage in the upper tank cavity 100 flow into the bottom of the lower tank cavity 200 by gravity;

[0063] The anoxic tank 12 is provided with the first stirring mechanism 7, the anoxic tank 12 and the aerobic tank 13 are provided with the nitrification liquid reflux mechanism 8, and the anoxic tank 12 is provided with the third microorganism (not shown in the figure), and the third microorganism includes denitrifying bacteria;

[0064] The sedimentation tank 14 is provided with the second stirring mechanism 9, the sedimentation tank 14 and the aerobic tank 13 are provided with the overflow mechanism 10, and the sedimentation tank 14 and the anaerobic tank 11 are provided with the activated sludge reflux mechanism 20.

[0065] In this embodiment, by the first hydraulic circulation mechanism 2 and the second hydraulic circulation mechanism 4, first, the water bodies of the anaerobic tank 11 and the aerobic tank 13 are circulated up and down, the microorganisms and the newly entered sewage pollutants are rapidly diluted and distributed in the water bodies, so that the sewage pollutants are rapidly diffused, and the microorganisms are uniformly contacted with the sewage pollutants; second, the negative pressure siphon formed circulates the gas generated in the anaerobic tank 11 into the water body of the anaerobic tank 11, and continuously brings the oxygen in the air into the water body of the aerobic tank 13, so that the sewage is fully and uniformly.

[0066] In the anaerobic section of biological treatment: the anaerobic tank 11 is not in communication with the outside during operation, and by adding the first microorganism containing methanotroph and anaerobic bacteria in the anaerobic tank 11, the organic pollutants are anaerobically fermented to generate products such as water, methane and carbon dioxide, and the methanotroph decomposes the methane into carbon dioxide while decomposing the refractory organic matter into easily degradable organic matter; then the generated gas is overflowed in the lower water body and is guided by the gas guide pipe 23 to above the liquid surface of the upper tank cavity 100, and then the gas in the upper tank cavity 100 is circulated back into the water body under the action of the first hydraulic circulation mechanism 2, so that the methane in the gas is continuously circulated back into the water body to provide carbon source for the methanotroph, and further decompose the methane into carbon dioxide.

[0067] In the anoxic section of biological treatment: by adding the third microorganism containing denitrifying bacteria in the anoxic tank 12, due to the bottom communication between the anaerobic tank 11 and the anoxic tank 12, part of the gas generated in the anaerobic tank 11 is overflowed with the activated sludge and water flow to the anoxic tank 12, and the residual methane in the anoxic tank 12 is further oxidized by the methanotroph into methanol, and part of the generated methanol is provided as carbon source for the denitrifying bacteria, and the rest is further oxidized into formaldehyde and finally into carbon dioxide, so that the gas discharged from the device is mainly carbon dioxide and almost no methane, achieving zero emission of methane;

[0068] In addition, by providing the first stirring mechanism 7, sludge settling is prevented, and the water body maintains a high sludge content; by providing the nitrification liquid reflux mechanism 8, the nitrification liquid refluxed from the aerobic tank 13 is uniformly diffused at the bottom of the tank under the action of the first stirring mechanism 7, and then the nitrification liquid is provided as carbon source for the denitrifying bacteria, so as to more thoroughly remove the nitrogen pollutants in the wastewater.

[0069] In the aerobic section of biological treatment: by adding the second microorganism containing nitrifying bacteria and nitrosating bacteria in the aerobic tank 13, due to the communication port provided at the middle and upper positions between the anoxic tank 12 and the aerobic tank 13, the activated sludge and water flow after denitrification reaction in the anoxic section are overflowed into the aerobic tank 13, the pollutants are rapidly diffused by the second hydraulic circulation mechanism 4, the microorganisms uniformly contact the wastewater pollutants, the oxygen-containing micro-bubbles are generated in the upper tank cavity 100 of the aerobic tank 13 by the oxygenation mechanism 6, and the oxygen-containing micro-bubbles are continuously brought into the water body and fully mixed with the water body under the action of the flow guide pipe 24 of the second hydraulic circulation mechanism 4, so as to maintain the metabolic activity of the aerobic microorganisms such as nitrifying bacteria in the water body and promote the nitrification reaction, thereby removing the nitrogen pollutants in the water body;

[0070] After the above biochemical treatment, the organic pollutants are decomposed by microorganisms, and overflow to the sedimentation tank 14. The activated sludge is separated from the water by high-efficiency sedimentation, and the supernatant is smoothly overflowed and collected and then discharged from the equipment treatment system. The sedimented activated sludge is completely returned to the water inlet of the anaerobic tank 11 by the activated sludge return mechanism 20, mixed with the incoming water, and enters the anaerobic tank 11. A large amount of activated sludge is treated by circulating organic matter formed by lysate, and the activated sludge is endogenously digested to achieve zero discharge. The second stirring mechanism 9 is used to prevent sludge accumulation during the process.

[0071] In this embodiment, by setting the microbial carrier mechanism in the anaerobic tank 11 and the aerobic tank 13 respectively, the amount of bacteria in the water body is ensured to have a certain amount, so that the amount of methanotrophs and other bacteria grows and iterates in a certain proportion, and the relative stable micro-ecology is maintained. When the system is impacted by water quality fluctuations, it will not completely fail and can quickly recover to normal state. In addition, the setting of the microbial carrier mechanism in the aerobic tank 13 can purify the water quality together with the activated sludge. The internal filler of the biological carrier mechanism has an oxygen concentration gradient, and has the function of partial simultaneous nitrification and denitrification.

[0072] Further, as shown in Figure 4 , 7 , in order to increase the attachment area of microorganisms and optimize the survival environment of microorganisms, the first microbial carrier mechanism 3 and the second microbial carrier mechanism 5 each include a plurality of microbial carrier assemblies 31. The microbial carrier assemblies 31 are detachably arranged in the lower tank cavity 200 of the anaerobic tank 11 or the aerobic tank 13 by the connecting piece 32.

[0073] In this embodiment, due to the zero discharge of sludge, the system has a high sludge concentration. Maintaining a high sludge concentration in the system necessarily has a proportional number of microorganisms to form a micro-ecosystem. Therefore, the treatment efficiency of wastewater and the index reached will be greatly improved, and the equipment volume load is high and the hydraulic retention time is short.

[0074] Further, as shown in Figure 4 , 7 , in order to avoid the swing of the microbial filler rope 312 caused by water flow impact, ensure the reliable and stable attachment and growth of microorganisms, and improve the stability of the microbial ecological system, the microbial carrier assembly 31 includes an upper and lower oppositely arranged support 311, and a plurality of microbial filler ropes 312 connected at both ends with the support 311. The support 311 is detachably connected with the lower tank cavity 200 of the anaerobic tank 11 or the aerobic tank 13 by the connecting piece 32.

[0075] Further, as shown in Figure 4 , 5, 6, 8, the first stirring mechanism 7 and the second stirring mechanism 9 both include a stirring shaft 71, a stirring motor (not shown in the figure) and a stirring paddle 72, one end of the stirring shaft 71 extends to the outside of the anoxic tank 12 or the sedimentation tank 14 and is connected with the driving end of the stirring motor (not shown in the figure), and the other end is connected with the stirring paddle 72;

[0076] The stirring motor (not shown in the figure) is connected with the anoxic tank 12 or the sedimentation tank 14;

[0077] The aerobic tank 13 is communicated with the anoxic tank 12 through the nitrification liquid reflux mechanism 8, and the aerobic tank 13 is communicated with the sedimentation tank 14 through the overflow mechanism 10.

[0078] In this embodiment, the nitrification liquid in the aerobic tank 13 is refluxed to the bottom of the anoxic tank 12 through the nitrification liquid reflux mechanism 8, and then uniformly diffused at the bottom of the tank through slow stirring of the first stirring mechanism 7, so that the nitrification liquid can provide carbon source for denitrifying bacteria, and the nitrogen pollutants in the sewage can be removed more thoroughly through the subsequent circulation.

[0079] In this embodiment, the treated sewage in the aerobic tank 13 is overflowed to the bottom of the sedimentation tank 14 through the overflow mechanism 10, the supernatant in the sewage is discharged, and the activated sludge is refluxed to the water inlet of the anaerobic tank 11 through the activated sludge reflux mechanism 20, mixed with the incoming water and then enters the anaerobic tank 11, so that the activated sludge in the anaerobic tank 11 is treated by the organic matter circulated by the cytolysate, and the activated sludge is endogenously digested to achieve zero discharge of sludge; at the same time, the activated sludge is prevented from accumulating through slow stirring of the second stirring mechanism 9.

[0080] Further, as shown in Figure 4 , 5 , 6, 8, the nitrification liquid reflux mechanism 8 includes a reflux pipe 81 and a first downpipe 82;

[0081] The first downpipe 82 is sleeved outside the stirring shaft 71 of the first stirring mechanism 7, one end of the first downpipe 82 is connected with the inner wall of the upper end of the anoxic tank 12 through a flange 30, and the other end extends above the stirring paddle 72 and is in an open shape;

[0082] The upper tank cavity 100 of the aerobic tank 13 is communicated with the first downpipe 82 through the reflux pipe 81, and a first electromagnetic valve 83 is arranged on the reflux pipe 81.

[0083] In this embodiment, the nitrification liquid reflux mechanism 8 is combined with the structure design of the first stirring mechanism 7, so that the nitrification liquid can be quickly refluxed to the bottom of the tank and uniformly diffused, the biochemical treatment efficiency and effect are improved, and the installation is convenient and the tank space is saved.

[0084] Further, as shown in Figure 4 , 5, 6, 8, the overflow mechanism 10 includes overflow pipe 101 and second sewer pipe 102;

[0085] The second sewer pipe 102 is sleeved outside the stirring shaft 71 of the second stirring mechanism 9, one end of the second sewer pipe 102 is connected with the inner wall of the upper end of the sedimentation tank 14 through the flange 30, and the other end extends above the stirring paddle 72 and is open;

[0086] The upper tank cavity 100 of the aerobic tank 13 is communicated with the second sewer pipe 102 through the overflow pipe 101, and the overflow pipe 101 is provided with a second electromagnetic valve 103.

[0087] In this embodiment, the overflow mechanism 10 is combined with the structure design of the second stirring mechanism 9, so that the activated sludge in the sewage can quickly return to the bottom of the tank, the activated sludge in the sewage can quickly reach the bottom of the tank, and quickly enter the anaerobic tank 11 for decomposition, realizing zero discharge of activated sludge; and the installation is convenient, and the tank space is saved.

[0088] In this embodiment, through the setting of the first electromagnetic valve 83 and the second electromagnetic valve 103, the flow of the reflux pipe 81 and the overflow pipe 101 is automatically controlled, and the efficient treatment of the sewage among the anoxic tank 12, the aerobic tank 13 and the sedimentation tank 14 is ensured.

[0089] Further, as shown in Figure 4 、 5 , 6, 8, the oxygenation mechanism 6 includes a low-pressure fan 61, an air inlet pipe 62 and a membrane filament aeration disc 63, and the low-pressure fan 61 is arranged outside the box body 1.

[0090] The air inlet end of the air inlet pipe 62 is connected with the low-pressure fan 61, and the other end extends into the upper end of the flow guide pipe 24 and is connected with the membrane filament aeration disc 63.

[0091] In this embodiment, the oxygen supply adopts a micro-power surface aeration technology, micro-bubbles are generated by using the membrane filament aeration disc 63, the bubbles are released from the water surface, the water body is circulated up and down by the lifting pump 22, the bubbles are taken to the bottom of the water to realize oxygenation, and the oxygen is uniformly diffused and transmitted by water circulation.

[0092] Further, as shown in Figure 1 、 4 , the activated sludge reflux mechanism 20 includes a submerged sewage pump 201 and a sewage return pipe 202.

[0093] The submerged sewage pump 201 is arranged at the bottom of the sedimentation tank 14, one end of the sewage return pipe 202 is connected with the submerged sewage pump 201, and the other end is connected with the water inlet of the anaerobic tank 11; and the sewage return pipe 202 is provided with a third electromagnetic valve 203.

[0094] In this embodiment, the precipitated activated sludge is returned to the inlet of the anaerobic tank 11 by the submersible pump 201, so that it is mixed with the incoming water and enters the anaerobic tank 11, thereby so that all the sludge generated at the end is returned to the front end for anaerobic dissolution and digestion, achieving zero sludge discharge.

[0095] In this embodiment, the equipment features a coordinated and controllable design of pumps and valves, ensuring that the parameters of each process section are coordinated and controllable. The process is simple and adaptable to a wide range of wastewater qualities.

[0096] Furthermore, such as Figure 4 , 5 As shown in Figures 6 and 8, in order to improve the strength of the inner sealing plate 21 and the connection stability of the guide pipe 24, the booster pump 22 and the air guide pipe 23, the guide pipe 24, the booster pump 22 and the air guide pipe 23 are all connected to the inner sealing plate 21 through flanges 30. A support frame 40 is provided on the side of the inner sealing plate 21 facing the lower pool cavity 200, and high-efficiency sedimentation honeycomb inclined tubes can be selectively installed on the support frame 40.

[0097] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this invention.

Claims

1. An integrated sewage treatment apparatus, characterized by comprising: The sewage treatment device comprises a box body, an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank which are sequentially arranged in the sewage treatment flow direction of the box body, and the anaerobic tank, the anoxic tank, the aerobic tank and the sedimentation tank are structures with openings at the top and continuous sealing at the periphery and the bottom; The anaerobic tank is provided with a first hydraulic circulation mechanism and a first microbial carrier mechanism, the bottom between the anaerobic tank and the anoxic tank is communicated, the anaerobic tank is provided with first microorganisms, and the anaerobic tank is not communicated with the outside during operation; The first microorganisms grow and iterate in the anaerobic tank through the first microbial carrier mechanism, and the first microorganisms comprise methanotrophs and anaerobic bacteria; The aerobic tank is provided with a second hydraulic circulation mechanism, a second microbial carrier mechanism and an oxygenation mechanism, and the aerobic tank is provided with second microorganisms; The second microorganisms grow and iterate in the aerobic tank through the second microbial carrier mechanism, and the second microorganisms comprise nitrifying bacteria and nitrite bacteria; The first hydraulic circulation mechanism and the second hydraulic circulation mechanism each comprise an inner sealing plate, a lifting pump, a gas guide pipe and a plurality of flow guide pipes; The inner sealing plate divides the tank cavity of the anaerobic tank and the aerobic tank into an upper tank cavity and a lower tank cavity, the inner sealing plate is provided with a gas discharge hole, and the gas guide pipe is arranged on the gas discharge hole; The lifting pump is located in the lower tank cavity and is connected with the middle part of the inner sealing plate, and the lifting pump is used for lifting the sewage in the lower tank cavity to the upper tank cavity; A plurality of flow guide pipes are distributed on the outer side of the lifting pump, one end of the flow guide pipe is located in the upper tank cavity and is lower than the gas guide pipe, the other end extends to above the tank bottom through the inner sealing plate, and the flow guide pipe makes the sewage in the upper tank cavity flow into the bottom of the lower tank cavity by gravity; The anoxic tank is provided with a first stirring mechanism, a nitrated liquid reflux mechanism is arranged between the anoxic tank and the aerobic tank, the anoxic tank is provided with third microorganisms, and the third microorganisms comprise denitrifying bacteria; A communication port is arranged between the middle and upper positions of the anoxic tank and the aerobic tank, and the activated sludge and water flow after the denitrification reaction in the anoxic tank overflow into the aerobic tank; The sedimentation tank is provided with a second stirring mechanism, an overflow mechanism is arranged between the sedimentation tank and the aerobic tank, and an activated sludge reflux mechanism is arranged between the sedimentation tank and the anaerobic tank.

2. The integrated wastewater treatment apparatus according to claim 1, wherein The first microbial carrier mechanism and the second microbial carrier mechanism each comprise a plurality of microbial carrier assemblies, and the microbial carrier assemblies are detachably arranged in the lower tank cavity of the anaerobic tank or the aerobic tank through connecting pieces.

3. The integrated wastewater treatment device according to claim 2, wherein The microbial carrier assembly comprises a support arranged oppositely in upper and lower positions, and a plurality of microbial filler ropes connected with the support at both ends, and the support is detachably connected with the lower tank cavity of the anaerobic tank or the aerobic tank through the connecting pieces.

4. The integrated wastewater treatment device of claim 1, wherein The first stirring mechanism and the second stirring mechanism each comprise a stirring shaft, a stirring motor and a stirring paddle, one end of the stirring shaft extends to the outside of the anoxic tank or the sedimentation tank and is connected with the driving end of the stirring motor, and the other end is connected with the stirring paddle; The stirring motor is connected with the anoxic tank or the sedimentation tank; The aerobic tank is communicated with the anoxic tank through the nitrated liquid reflux mechanism, and the aerobic tank is communicated with the sedimentation tank through the overflow mechanism.

5. The integrated wastewater treatment device according to claim 4, wherein The nitrated liquid reflux mechanism comprises a reflux pipe and a first lower water pipe. The first downcomer is sleeved outside the stirring shaft of the first stirring mechanism, one end of the first downcomer is connected with the inner wall of the upper end of the anoxic tank through a flange, and the other end extends above the stirring paddle and is open; The upper tank cavity of the aerobic tank is communicated with the first downcomer through a reflux pipe, and a first electromagnetic valve is arranged on the reflux pipe.

6. The integrated wastewater treatment device of claim 4, wherein The overflow mechanism comprises an overflow pipe and a second downcomer; The second downcomer is sleeved outside the stirring shaft of the second stirring mechanism, one end of the second downcomer is connected with the inner wall of the upper end of the sedimentation tank through a flange, and the other end extends above the stirring paddle and is open; The upper tank cavity of the aerobic tank is communicated with the second downcomer through an overflow pipe, and a second electromagnetic valve is arranged on the overflow pipe.

7. The integrated wastewater treatment device of claim 1, wherein The oxygen increasing mechanism comprises a low-pressure fan, an air inlet pipe and a membrane filament aerator disc, and the low-pressure fan is arranged outside the box body; The air inlet end of the air inlet pipe is connected with the low-pressure fan, and the other end extends into the upper end of the flow guide pipe and is connected with the membrane filament aerator disc.

8. The integrated wastewater treatment device of claim 1, wherein The activated sludge reflux mechanism comprises a sewage submersible pump and a sewage return pipe; The sewage submersible pump is arranged at the bottom of the sedimentation tank, one end of the sewage return pipe is connected with the sewage submersible pump, and the other end is connected with the water inlet of the anaerobic tank; a third electromagnetic valve is arranged on the sewage return pipe.

9. The integrated wastewater treatment device of claim 1, wherein The flow guide pipe, the lifting pump and the air guide pipe are all connected with the inner sealing plate through flanges, and a support frame is arranged on the side of the inner sealing plate facing the lower tank cavity.

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