Domestic sewage treatment device

Abstract

The utility model discloses a domestic sewage treatment device, and belongs to the technical field of domestic sewage treatment. The domestic sewage treatment device comprises a fence tank, a regulating tank, an anoxic tank, an MBR (Membrane Bioreactor) tank, a sludge digestion tank and a clean water tank, the fixed disc is fixedly connected with the adjusting tank; the connecting rod is fixedly connected with the fixed disc; the first rotating shaft is rotationally connected with the connecting rod; the first gear is fixedly connected with the first rotating shaft; the guide block is fixedly connected with the connecting rod; the first rack is horizontally and slidably connected with the guide block and is meshed with the first gear; the first rotating block is fixedly connected with the first rotating shaft; the connecting pipe is fixedly connected with the first rotating block; the aeration pipe is fixedly connected with the connecting pipe and is communicated with the connecting pipe; two ends of the protective cover are fixedly connected with the aeration pipe and the connecting rod respectively; the driving assembly is used for driving the first rack to move. The domestic sewage treatment device has the beneficial effect that the aeration area is increased.

Description

Technical Field

[0001] This application relates to the technical field of domestic sewage treatment, and more specifically, to a domestic sewage treatment device. Background Art

[0002] Domestic sewage is the wastewater discharged in residents' daily life, mainly from residential buildings and public buildings. The pollutants contained in domestic sewage are mainly organic matter and a large number of pathogenic microorganisms. The organic matter existing in domestic sewage is extremely unstable, easily putrefies and produces a foul smell. Bacteria and pathogens multiply in large numbers using the organic matter in domestic sewage, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before being discharged.

[0003] In order to prevent the suspended particles in the sewage from settling and emitting an odor, the existing domestic sewage treatment device is provided with an aeration pipe in the regulating tank for oxygenation and stirring. However, the aeration pipe is usually fixed, and the aeration area is limited.

[0004] Therefore, a domestic sewage treatment device with an increased aeration area is provided. Utility Model Content

[0005] The content part of this application is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide a domestic sewage treatment device, including: a fence tank, a regulating tank, an anoxic tank, an MBR tank, a sludge digestion tank, and a clear water tank; a fixed disk fixedly connected to the regulating tank; a connecting rod fixedly connected to the fixed disk; a first rotating shaft rotatably connected to the connecting rod; a first gear fixedly connected to the first rotating shaft; a guiding block fixedly connected to the connecting rod; a first rack horizontally slidably connected to the guiding block and meshed with the first gear; a first rotating block fixedly connected to the first rotating shaft; a connecting pipe fixedly connected to the first rotating block; an aeration pipe fixedly connected to the connecting pipe and communicated with the connecting pipe; a protective cover fixedly connected to the aeration pipe and the connecting rod at both ends; a driving assembly for driving the first rack to move.

[0007] The driving assembly drives the first rack to move. The movement of the first rack drives the first gear to rotate. The rotation of the first gear drives the first rotating shaft to rotate. The rotation of the first rotating shaft drives the first rotating block to rotate, thereby driving the connecting pipe to rotate. The rotation of the connecting pipe drives the aeration pipe to rotate, thereby increasing the aeration area and preventing the suspended particles in the sewage from settling.

[0008] Further, the connecting rod is provided with a first clearance groove; the first rotating block rotates in the first clearance groove.

[0009] Further, the first rotating block is provided with a second clearance groove; the first gear is located in the second clearance groove.

[0010] Further, the guiding block is provided with a guiding groove extending along the length direction of the guiding block; the first rack moves along the guiding groove.

[0011] Further, the driving assembly includes: a fixing plate fixedly connected to the connecting rod; a lead screw rotatably connected to the fixing plate; a first slider horizontally slidably connected to the connecting rod and internally threadedly connected to the lead screw; a motor fixedly connected to the fixing plate, and its driving shaft is fixedly connected to the lead screw.

[0012] Further, there are two fixing plates, respectively located at both ends of the lead screw.

[0013] Further, the inside of the connecting rod is provided with a first sliding groove extending along the length direction of the connecting rod; the first slider moves along the first sliding groove.

[0014] Further, the guiding block, the first rack and the driving assembly are all located in the first sliding groove.

[0015] Further, there are multiple aeration pipes; the multiple aeration pipes are equidistantly distributed along the length direction of the connecting rod.

[0016] The beneficial effect of this application is that it provides a domestic sewage treatment device that specifically increases the aeration area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, purposes, and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and components are not necessarily drawn to scale.

[0019] In the drawings:

[0020] Figure 1 is the overall schematic diagram according to the embodiment of this application;

[0021] Figure 2 is the structural schematic diagram of a part of the embodiment, mainly showing the structure of the fixed disk;

[0022] Figure 3It is a schematic structural diagram of a part of an embodiment, mainly showing the structure of the connecting rod;

[0023] Figure 4 is Figure 3 An enlarged view of part A, mainly showing the structures of the first rotating block and the first gear;

[0024] Figure 5 It is a schematic structural diagram of a part of an embodiment, mainly showing the structure of the guide block.

[0025] Reference numerals:

[0026] 100, domestic sewage treatment device; 101, fence tank; 102, regulation tank; 103, anoxic tank; 104, MBR tank;

[0027] 105, sludge digestion tank; 106, clear water tank; 107, fixed disk; 108, connecting rod; 108a, first clearance groove;

[0028] 108b, first sliding groove; 109, first rotating shaft; 110, first rotating block; 112, connecting pipe; 113, aeration pipe;

[0029] 114, first gear; 115, guide block; 115a, guide groove; 116, first rack; 117, first rotating block;

[0030] 117a, second clearance groove; 118, protective cover; 119, fixing plate; 120, lead screw; 121, first slider; 122, motor; 123, chlorine dioxide generator. Detailed implementation manners

[0031] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0032] In addition, it should be noted that for the sake of convenience of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0033] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or mutual dependence relationship of the functions executed by these devices, modules or units.

[0034] It should be noted that the modifiers "one" and "multiple" mentioned in this disclosure are illustrative rather than restrictive. Those skilled in the art should understand that, unless clearly specified otherwise in the context, it should be understood as "one or more".

[0035] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] Refer to Figures 1-5 , a domestic sewage treatment device 100, comprising: a fence tank 101, a regulating tank 102, an anoxic tank 103, an MBR tank 104, a sludge digestion tank 105, a clear water tank 106, a fixed disk 107, a connecting rod 108, a first rotating shaft 109, a connecting pipe 112, an aeration pipe 113, an adjusting assembly for adjusting the angle of the aeration pipe 113, and a driving assembly for driving the movement of the adjusting assembly. The fixed disk 107 is fixedly connected to the regulating tank 102. The connecting rod 108 is fixedly connected to the fixed disk 107. The first rotating shaft 109 is rotatably connected to the connecting rod 108. The connecting pipe 112 is fixedly connected to the first rotating block 117. The aeration pipe 113 is fixedly connected to the connecting pipe 112 and is in communication with the connecting pipe 112.

[0037] The fence tank 101 is provided with a fence, the grid gap is 0.8 - 1 mm, and the material is stainless steel, which is used to remove soft winding objects, large solid particle impurities and hard floating objects in the sewage, so as to protect the service life of the subsequent working water pump and reduce the system processing workload.

[0038] After the domestic sewage is treated by the fence tank 101, it enters the regulating tank 102 for water volume and water quality regulation and equalization, ensuring the balance and stability of the water volume and water quality of the subsequent biochemical treatment system. A pre-aeration pipe 113 is provided for oxygenation and stirring, to prevent the suspension particles in the sewage from precipitating and emitting odors, and also to have a certain degradation effect on the organic matter in the sewage, improving the impact resistance and treatment effect of the whole system.

[0039] The MBR tank 104 mainly consists of a membrane module (flat membrane) and activated sludge. A large number of microorganisms (activated sludge) in the MBR tank 104 come into full contact with the substrates (degradable organic matters in wastewater, etc.), and carry out metabolism through oxidation and decomposition to maintain their own growth and reproduction. At the same time, the organic pollutants are degraded, and the biodegradable pollutants in the sewage are assimilated and dissimilated. Most of the dissimilation products become harmless CO2 and H2O, and the assimilation products become the components of microorganisms. The membrane module carries out solid-liquid separation on the wastewater and sludge mixture through mechanical screening, interception and other effects. Macromolecular substances and the like are effectively intercepted and retained in the MBR tank 104 after concentration, thus avoiding the loss of microorganisms and ensuring the stability of the effluent quality. It not only improves the effluent quality of the system and the operation stability, but also prolongs the residence time of the refractory macromolecular substances in the MBR tank 104, and strengthens the removal effect of the system on the refractory substances. The effluent is disinfected by chlorine dioxide to kill the residual bacteria in the sewage and then enters the clear water tank 106.

[0040] The mixture in the MBR tank 104 is refluxed to the anoxic tank 103 by a lift pump to provide nitrate for the anoxic tank 103 to achieve the purpose of denitrification. The excess sludge is lifted to the sludge tank by a sludge pump for sludge digestion, and then the excess sludge is periodically pumped, dried and cleaned. The supernatant of the sludge tank is refluxed to the regulation tank 102 for re-treatment.

[0041] The adjustment assembly is used to adjust the aeration angle of the aeration pipe 113, and includes: a first gear 114, a guide block 115, a first rack 116, a first rotating block 117, and a protective cover 118. The first gear 114 is fixedly connected to the first rotating shaft 109. The guide block 115 is fixedly connected to the connecting rod 108. The first rack 116 is horizontally slidably connected to the guide block 115 and is meshed with the first gear 114. Specifically, the guide block 115 is provided with a guide groove 115a extending along the length direction of the guide block 115, and the first rack 116 moves along the guide groove 115a. The first rotating block 117 is fixedly connected to the first rotating shaft 109. Both ends of the protective cover 118 are fixedly connected to the aeration pipe 113 and the connecting rod 108 respectively. The protective cover 118 is a waterproof cloth with a waterproof function. The connecting rod 108 is provided with a first clearance groove 108a for the first rotating block 117 to rotate. The first rotating block 117 is provided with a second clearance groove 117a, and the first gear 114 is located in the second clearance groove 117a.

[0042] The driving component is used to drive the movement of the adjusting component, including: a fixing plate 119, a lead screw 120, a first slider 121, and a motor 122. The fixing plate 119 is fixedly connected to the connecting rod 108. The lead screw 120 is rotatably connected to the fixing plate 119. The first slider 121 is horizontally slidably connected to the connecting rod 108 and is internally threadedly connected to the lead screw 120. Specifically, a first chute 108b extending along the length direction of the connecting rod 108 is provided inside the connecting rod 108, and the first slider 121 moves along the first chute 108b. The motor 122 is fixedly connected to the fixing plate 119, and the drive shaft of the motor 122 is fixed to the lead screw 120. There are two fixing plates 119, respectively located at both ends of the lead screw 120.

[0043] A first chute 108b extending along the length direction of the connecting rod 108 is provided inside the connecting rod 108, and the first slider 121 moves along the first chute 108b. The guide block 115, the first rack 116, and the driving component are all located inside the first chute 108b. A plurality of aeration pipes 113 are provided, and the plurality of aeration pipes 113 are equidistantly distributed along the length direction of the connecting rod 108. The motor 122 drives the lead screw 120 to rotate, and the first slider 121 moves along the first chute 108b. Therefore, the lead screw 120 drives the first slider 121 to move. The movement of the first slider 121 drives the first rack 116 to move. The first rack 116 meshes with the first gear 114. Therefore, the first gear 114 drives the first rotating shaft 109 to rotate. The rotation of the first rotating shaft 109 drives the first rotating block 117 to rotate, thereby driving the connecting pipe 112 to rotate. The rotation of the connecting pipe 112 drives the aeration pipes 113 to rotate. Aeration holes are provided on the aeration pipes 113, thereby adjusting the aeration angle. Oxygen is supplied and stirring is carried out through the aeration pipes 113 to prevent the suspended particles in the sewage from settling and emitting an odor, and at the same time, it has a certain degradation effect on the organic matter in the sewage, improving the shock resistance performance and treatment effect of the entire system.

[0044] Working principle: Domestic sewage is treated by the fence pool 101 and then enters the regulation pool 102 for regulating and equalizing the water volume and water quality, ensuring the balance and stability of the water volume and water quality of the subsequent biochemical treatment system. A pre-aeration pipe 113 is set. Meanwhile, the motor 122 drives the lead screw 120 to rotate, and the first slider 121 moves along the first chute 108b. Therefore, the lead screw 120 drives the first slider 121 to move. The movement of the first slider 121 drives the first rack 116 to move. The first rack 116 meshes with the first gear 114. Therefore, the first gear 114 drives the first rotating shaft 109 to rotate. The rotation of the first rotating shaft 109 drives the first rotating block 117 to rotate, thereby driving the connecting pipe 112 to rotate. The rotation of the connecting pipe 112 drives the aeration pipe 113 to rotate. The aeration pipe 113 is provided with aeration holes, thereby adjusting the aeration angle and comprehensively aerating the regulation pool 102. Through the oxygenation and stirring of the aeration pipe 113, it can prevent the suspension particles in the sewage from precipitating and emitting odors, and also play a certain role in degrading the organic matter in the sewage, improving the impact resistance and treatment effect of the entire system.

[0045] Then the treated water is transported to the anoxic pool 103. The function of the anoxic pool 103 is to provide an anoxic state for the sewage, which is beneficial to the growth of anoxic microorganisms and enables denitrifying bacteria to carry out denitrification reactions. The sludge in the anoxic pool 103 is transported to the sludge digestion pool 105 by a pump, and the treated water is transported to the MBR pool 104. The MBR pool 104 mainly consists of a membrane module (flat membrane) and activated sludge. A large number of microorganisms (activated sludge) fully contact with the substrate (degradable organic matter in the wastewater, etc.) in the MBR pool 104 and carry out metabolism through oxidation decomposition to maintain their own growth and reproduction. At the same time, the organic pollutants are degraded, and the biodegradable pollutants in the sewage are assimilated and dissimilated. Most of the dissimilation products become harmless CO2 and H2O, and the assimilation products become the components of microorganisms. The membrane module separates the solid and liquid of the wastewater and sludge mixture through mechanical screening, interception, etc. Macromolecular substances and the like are effectively intercepted in the MBR pool 104 after concentration, thus avoiding the loss of microorganisms and ensuring the stability of the effluent quality. It not only improves the effluent quality and operation stability of the system, but also prolongs the residence time of refractory macromolecular substances in the MBR pool 104, strengthening the removal effect of the system on refractory substances. The effluent is disinfected by a chlorine dioxide generator 123 to kill the residual bacteria in the sewage and then enters the clear water pool 106.

[0046] The mixed liquid in the MBR tank 104 is refluxed to the anoxic tank 103 by a lift pump to provide nitrate for the anoxic tank 103, so as to achieve the purpose of denitrification. The excess sludge is lifted to the sludge tank by a sludge pump for sludge digestion, and then the excess sludge is periodically pumped, dried and cleaned. The supernatant of the sludge digestion tank 105 is refluxed to the adjustment tank 102 for re-treatment, so as to complete better treatment of the sewage. The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the embodiments of the present disclosure with similar functions.

Claims

1. A domestic sewage treatment device, comprising: Fence tanks, regulating tanks, anoxic tanks, MBR tanks, sludge digestion tanks and clear water tanks; Features: The domestic sewage treatment device also includes: A fixed plate, fixedly connected to the regulating tank; A connecting rod, fixedly connected to the fixing plate; A first rotating shaft, rotatably connected to the connecting rod; A first gear, fixedly connected to the first rotating shaft; A guide block fixedly connected to the connecting rod; The first rack is horizontally slidably connected to the guide block and meshed with the first gear; the first rotating block is fixedly connected to the first rotating shaft; A connecting pipe, fixedly connected to the first rotating block; an aeration pipe, fixedly connected to the connecting pipe and communicated with the connecting pipe; The protective cover has two ends fixedly connected to the aeration pipe and the connecting rod respectively; The driving assembly is used for driving the first rack to move.

2. The domestic sewage treatment device according to claim 1, characterized in that: The connecting rod is provided with a first avoidance groove; The first avoidance groove is used for the first rotating block to rotate.

3. The domestic sewage treatment device according to claim 2, characterized in that: The first rotating block is provided with a second air-avoiding groove; The first gear is located in the second avoidance groove.

4. The domestic sewage treatment device according to claim 3, characterized in that: The guide block is provided with a guide groove extending along the length direction of the guide block; The first rack moves along the guide groove.

5. The domestic sewage treatment device according to claim 4, characterized in that: The drive assembly comprises: A fixed plate, fixedly connected to the connecting rod; A lead screw, rotatably connected to the fixed plate; The first sliding block is horizontally slidably connected with the connecting rod and is internally threadedly connected with the lead screw; the motor is fixedly connected with the fixing plate, and its driving shaft is fixed with the lead screw.

6. The domestic sewage treatment device according to claim 5, characterized in that: There are two fixing plates, which are respectively located at two ends of the lead screw.

7. The domestic sewage treatment device according to claim 6, characterized in that: A first sliding groove is provided inside the connecting rod and extends along the length direction of the connecting rod; the first sliding block moves along the first sliding groove.

8. The domestic sewage treatment device according to claim 7, characterized in that: The guide block, the first rack and the driving assembly are all located in the first sliding groove.

9. The domestic sewage treatment device according to claim 8, characterized in that: The aeration pipe is provided with a plurality of them; The plurality of aeration tubes are evenly distributed along the length direction of the connecting rod.

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