Small rural domestic sewage anaerobic digestion treatment device

Abstract

The utility model relates to the technical field of domestic sewage treatment, in particular to a small rural domestic sewage anaerobic digestion treatment device which comprises a bottom table, an anaerobic tank is fixed on one side of the upper end of the bottom table, a cover plate covers the upper end of the anaerobic tank, an exhaust connector is fixedly embedded in the cover plate, and a drainage connector and a water supply connector are fixedly embedded in the two sides of the anaerobic tank. A first water pump is fixed on the outer wall of the anaerobic tank through a bracket, the water outlet end of the first water pump is butted with a feeding interface flange, a filter cartridge is fixed at the upper end of the bottom table through a bracket, a water outlet interface butted with a water inlet end flange of the first water pump is fixedly embedded in one side of the filter cartridge, and an end cover is fixed at the upper end of the filter cartridge. According to the utility model, large impurities in water can be filtered through a multi-layer aluminum alloy wire mesh structure in the filter cartridge, and are prevented from being excessively precipitated and deposited in the anaerobic tank.

Description

Technical Field

[0001] The utility model relates to the technical field of domestic sewage treatment, in particular to a small-scale rural domestic sewage anaerobic digestion treatment device. Background Art

[0002] Anaerobic refers to an organism or cell that can grow in the absence or lack of molecular oxygen and does not require free oxygen to grow, such as Desulfovibrio, Shigella, Clostridium butyricum, etc.

[0003] The process by which organic matter is broken down by anaerobic bacteria to produce methane and carbon dioxide under anaerobic conditions. Anaerobic conditions are the removal of CO2 from organic matter in the absence of air.

[0004] Whether it is acidic fermentation or biogas fermentation, the oxygen involved in the biochemical reaction comes from water, organic matter, nitrate or decomposed nitrite.

[0005] Anaerobic digestion treatment is the process in which anaerobic microorganisms degrade and stabilize organic matter in sludge under anaerobic conditions.

[0006] The advantage of anaerobic digestion is that organic matter is digested to produce energy, and the residue can be used as fertilizer. Anaerobic digestion was initially used for waste treatment, and now it has been applied to many fields, such as industrial wastewater treatment, urban garbage treatment, and potential energy development, as fuel and power, and large-scale anaerobic digestion plants have been established.

[0007] Working principle of anaerobic tank:

[0008] 1. Hydrolysis stage: Due to its large molecular volume, high molecular organic matter cannot directly pass through the cell wall of anaerobic bacteria and needs to be decomposed into small molecules by extracellular enzymes outside the microorganism. Typical organic substances in wastewater, such as cellulose, are decomposed into cellobiose and glucose by cellulase, starch is decomposed into maltose and glucose, and protein is decomposed into short peptides and amino acids. After decomposition, these small molecules can pass through the cell wall and enter the body of the cell for the next step of decomposition.

[0009] 2. Acidification stage: The above-mentioned small molecule organic matter enters the cell body and is converted into simpler compounds and distributed outside the cell. The main product of this stage is volatile fatty acids, and some alcohols, lactic acid, carbon dioxide, hydrogen, ammonia, hydrogen sulfide and other products are also produced.

[0010] 3. Acetogenesis stage: In this stage, the product of the previous step is further converted into acetic acid, carbonic acid, hydrogen and new cellular substances.

[0011] 4. Methane production stage: In this stage, acetic acid, hydrogen, carbonic acid, formic acid and methanol are converted into methane, carbon dioxide and new cell substances. This stage is also the most important stage of the entire anaerobic process and the rate-limiting stage of the entire anaerobic reaction process.

[0012] At present, when carrying out anaerobic digestion treatment of sewage, the treatment tank is mainly used as the anaerobic digestion environment. The sewage needs to be transported to the anaerobic tank for reaction treatment. Before transporting the sewage to the anaerobic tank, large impurities in the sewage need to be further filtered to reduce excessive sediment accumulation in the anaerobic tank and avoid frequent cleaning and treatment of the anaerobic tank. Utility Model Content

[0013] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to reduce the excessive sedimentation accumulated in the anaerobic tank and avoid the problem of frequent cleaning and treatment of the anaerobic tank.

[0014] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0015] A small-scale rural domestic sewage anaerobic digestion treatment device is designed, comprising a base, an anaerobic tank is fixed on one side of the upper end of the base, the upper end of the anaerobic tank is covered with a cover plate, an exhaust interface is fixedly embedded in the cover plate, drainage interfaces and water supply interfaces are fixedly embedded on both sides of the anaerobic tank, a first water pump is fixed on the outer wall of the anaerobic tank through a bracket, the water outlet end of the first water pump is connected to the water supply interface flange, a filter cartridge is fixed on the upper end of the base through a bracket, a water outlet interface connected to the water inlet end flange of the first water pump is fixedly embedded on one side of the filter cartridge, and an end cover is fixed on the upper end of the filter cartridge.

[0016] In detail, a flushing interface is fixedly embedded on the end cover, and the first valve is fixedly embedded on the flushing interface.

[0017] In detail, a waste discharge interface is fixedly embedded in the lower end of the filter cartridge, and a second valve is fixedly embedded in the waste discharge interface.

[0018] In detail, a second water pump is fixed on the base platform through a bracket, and a water inlet interface that is connected to a flange at the water outlet end of the second water pump is fixedly embedded on the other side of the filter cartridge.

[0019] In detail, an inner cylinder is slidably sleeved on the inner wall of the filter cylinder, support blocks arranged upright with the inner cylinder are fixed on both sides of the inner wall of the filter cylinder, and a multi-layer aluminum alloy wire mesh is fixedly embedded on the inner wall of the inner cylinder.

[0020] In detail, a threaded ring is fixed on the upper end of the inner tube, a threaded knob is arranged on the inner thread of the threaded ring, and a threaded groove which is threadably connected with the threaded knob is arranged on the inner wall of the filter tube.

[0021] In detail, an annular groove is arranged on the outer wall of the inner cylinder, and a rubber sealing ring which is in close contact with the inner wall of the filter cylinder is bonded on the inner wall of the annular groove.

[0022] When the sewage is introduced into the anaerobic tank for anaerobic treatment, the sewage is first sent into the filter cartridge through the second water pump, and then sent from bottom to top to the first water pump through the water outlet interface, and then sent into the anaerobic tank through the first water pump. At this time, large impurities can be filtered through multi-layer aluminum alloy wire mesh to avoid excessive precipitation of large impurities in the anaerobic tank.

[0023] When cleaning the aluminum alloy wire mesh, open the first valve and the second valve respectively, let clean water in through the flushing interface, then flush the aluminum alloy wire mesh from top to bottom, and finally discharge it through the waste discharge interface.

[0024] The design scheme proposed by the utility model has the following beneficial effects during application:

[0025] 1. The utility model can filter large impurities in water through the multi-layer aluminum alloy wire mesh structure in the filter cartridge to avoid excessive precipitation and siltation in the anaerobic tank.

[0026] 2. The utility model can let clean water in from top to bottom through the flushing interface, and open the waste discharge interface to flush the aluminum alloy wire mesh, and regularly treat it to ensure the filtration smoothness of the aluminum alloy wire mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is an enlarged schematic diagram of point a of the utility model;

[0029] Figure 3 It is a top view schematic diagram of the rubber sealing ring of the utility model.

[0030] In the figure: 1. base; 11. anaerobic tank; 12. cover plate; 13. exhaust interface; 14. drainage interface; 15. water supply interface; 16. first water pump; 17. filter cartridge; 18. water outlet interface; 19. end cover; 2. flushing interface; 21. first valve; 22. waste discharge interface; 23. second valve; 3. second water pump; 31. water inlet interface; 4. built-in cylinder; 41. aluminum alloy wire mesh; 42. threaded ring; 43. threaded knob; 44. threaded groove; 45. support block; 5. annular groove; 51. rubber sealing ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] See also Figure 1-Figure 3 A small-scale rural domestic sewage anaerobic digestion treatment device comprises a base 1, an anaerobic tank 11 is fixed on one side of the upper end of the base 1, the upper end of the anaerobic tank 11 is covered with a cover plate 12, an exhaust interface 13 is fixedly embedded on the cover plate 12, drainage interfaces 14 and water supply interfaces 15 are fixedly embedded on both sides of the anaerobic tank 11, a first water pump 16 is fixed on the outer wall of the anaerobic tank 11 through a bracket, the water outlet end of the first water pump 16 is flange-connected to the water supply interface 15, a filter cartridge 17 is fixed on the upper end of the base 1 through a bracket, a water outlet interface 18 that is flange-connected to the water inlet end of the first water pump 16 is fixedly embedded on one side of the filter cartridge 17, and an end cover 19 is fixed on the upper end of the filter cartridge 17.

[0033] It should be further explained that a flushing interface 2 is fixedly embedded in the end cover 19 , and a first valve 21 is fixedly embedded in the flushing interface 2 , so that the flushing interface 2 can be opened and closed.

[0034] It should be further explained that a waste discharge interface 22 is fixedly embedded in the lower end of the filter cartridge 17 , and a second valve 23 is fixedly embedded in the waste discharge interface 22 , so that the waste discharge interface 22 can be opened and closed.

[0035] It should be further explained that a second water pump 3 is fixed to the base 1 through a bracket, and a water inlet interface 31 that is connected to the water outlet flange of the second water pump 3 is fixedly embedded on the other side of the filter cartridge 17. Both the first water pump 16 and the second water pump 3 are vortex booster pumps, which can improve the water flow transmission efficiency.

[0036] It should be further explained that an internal cylinder 4 is slidably sleeved on the inner wall of the filter cylinder 17, and support blocks 45 are fixed on both sides of the inner wall of the filter cylinder 17 to be erected with the internal cylinder 4. A multi-layer aluminum alloy wire mesh 41 is fixedly embedded on the inner wall of the internal cylinder 4, and the aluminum alloy wire mesh 41 is a filter structure that can block and filter large impurities.

[0037] The multi-layer aluminum alloy wire mesh structure in the filter cartridge 17 can filter large impurities in the water to prevent them from causing excessive precipitation and siltation in the anaerobic tank 11 .

[0038] Through the flushing interface, clean water can be introduced from top to bottom, and the waste discharge interface can be opened to flush the aluminum alloy wire mesh. Regular treatment can ensure the filtration smoothness of the aluminum alloy wire mesh.

[0039] It should be further explained that a threaded ring 42 is fixed to the upper end of the built-in cylinder 4, and a threaded knob 43 is provided on the inner thread of the threaded ring 42. A threaded groove 44 that is threadedly connected to the threaded knob 43 is provided on the inner wall of the filter cylinder 17. When the built-in cylinder 4 needs to be removed, the end cover 19 is opened, and the threaded knob 43 is rotated to separate the threads from the threaded ring 42 and the threaded groove 44 respectively, so that the built-in cylinder 4 can be disengaged from the filter cylinder 17.

[0040] It should be further explained that an annular groove 5 is provided on the outer wall of the built-in cylinder 4, and a rubber sealing ring 51 is bonded to the inner wall of the annular groove 5, which is tightly attached to the inner wall of the filter cylinder 17, so as to fill the gap between the built-in cylinder 4 and the filter cylinder 17. The rubber sealing ring 51 is made of water-swellable rubber material.

[0041] Working method: When it is necessary to perform anaerobic treatment on the sewage introduced into the anaerobic tank 11, the sewage is first sent into the filter cartridge 17 through the second water pump 3, and then sent from bottom to top to the first water pump 16 through the water outlet interface 18, and then sent into the anaerobic tank 11 through the first water pump 16. At this time, large impurities can be filtered through the multi-layer aluminum alloy wire mesh 41 to avoid excessive precipitation of large impurities in the anaerobic tank 11.

[0042] When the aluminum alloy wire mesh 41 needs to be cleaned, the first valve 21 and the second valve 23 are opened respectively, and clean water is introduced through the flushing interface 2, and then the aluminum alloy wire mesh 41 is flushed from top to bottom, and finally, discharged through the waste discharge interface 22.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A small-scale rural domestic sewage anaerobic digestion treatment device, comprising a base (1), characterized in that: An anaerobic tank (11) is fixed to one side of the upper end of the base (1), the upper end of the anaerobic tank (11) is covered with a cover plate (12), an exhaust port (13) is fixedly embedded in the cover plate (12), drainage ports (14) and water supply ports (15) are fixedly embedded on both sides of the anaerobic tank (11), a first water pump (16) is fixed to the outer wall of the anaerobic tank (11) via a bracket, the water outlet end of the first water pump (16) is flange-jointed with the water supply port (15), and the upper end of the base (1) is fixedly connected to the upper end of the base (1). A filter cartridge (17) is fixed by a bracket, a water outlet interface (18) fixedly embedded in one side of the filter cartridge (17) and connected to the water inlet flange of the first water pump (16), an end cover (19) fixedly disposed on the upper end of the filter cartridge (17), an internal cartridge (4) slidably sleeved on the inner wall of the filter cartridge (17), support blocks (45) arranged to stand on the internal cartridge (4) are also fixedly disposed on both sides of the inner wall of the filter cartridge (17), and a multi-layered aluminum alloy wire mesh (41) is fixedly embedded in the inner wall of the internal cartridge (4).

2. A small-scale rural domestic sewage anaerobic digestion treatment device according to claim 1, characterized in that: A flushing interface (2) is fixedly embedded in the end cover (19), and a first valve (21) is fixedly embedded in the flushing interface (2).

3. A small-scale rural domestic sewage anaerobic digestion treatment device according to claim 2, characterized in that: A waste discharge interface (22) is fixedly embedded in the lower end of the filter cartridge (17), and a second valve (23) is fixedly embedded in the waste discharge interface (22).

4. A small-scale rural domestic sewage anaerobic digestion treatment device according to claim 3, characterized in that: A second water pump (3) is fixed on the base (1) via a bracket, and a water inlet interface (31) that is connected to a flange at the water outlet end of the second water pump (3) is fixedly embedded on the other side of the filter cartridge (17).

5. A small-scale rural domestic sewage anaerobic digestion treatment device according to claim 4, characterized in that: A threaded ring (42) is fixed to the upper end of the built-in cylinder (4), a threaded knob (43) is provided on the inner thread of the threaded ring (42), and a threaded groove (44) threadably connected to the threaded knob (43) is provided on the inner wall of the filter cylinder (17).

6. A small-scale rural domestic sewage anaerobic digestion treatment device according to claim 5, characterized in that: An annular groove (5) is provided on the outer wall of the built-in cylinder (4), and a rubber sealing ring (51) is bonded to the inner wall of the annular groove (5) and is in close contact with the inner wall of the filter cylinder (17).

Images