Anaerobic reactor for sewage treatment

Abstract

The utility model discloses an anaerobic reactor for sewage treatment, which mainly comprises a tank body, a water distributor arranged at the bottom of the tank body, a first-stage three-phase separator and a second-stage three-phase separator arranged above the water distributor in the tank body, anaerobic sludge particle layers arranged between the first-stage three-phase separator and the water distributor and between the first-stage three-phase separator and the second-stage three-phase separator, a gas-liquid separator arranged above the tank body, and an anaerobic sludge particle layer arranged between the gas-liquid separator and the water distributor. A water outlet pipe is arranged at the upper end of the tank body, a gas outlet of the gas-liquid separator is connected with an exhaust pipe, a supporting vibration rod is arranged in the anaerobic sludge particle layer, the cross section of the supporting vibration rod is a triangle with a downward sharp corner, and a vibration motor is arranged in the supporting vibration rod; the supporting vibration rod is arranged in the anaerobic sludge particle layer, and the vibration motor is arranged in the supporting vibration rod, so that the vibration motor can drive the supporting rod to vibrate and shake, the hardening of the anaerobic sludge particle layer is reduced, the fluffiness of the anaerobic particle layer is kept, the contact reaction between sewage and the anaerobic particle layer is improved, and the anaerobic reaction effect is improved; therefore, the organic matter purification effect of sewage is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, in particular to an anaerobic reactor for sewage treatment. Background Art

[0002] With the development of science and the continuous deepening of scientific research, many new technologies, new materials, and new concepts have been widely applied to the environmental protection industry, leading to significant progress in my country's environmental protection technology. Most of the wastewater discharged by industries such as food, biology, and chemical industry is high-concentration organic wastewater. The treatment of high-concentration organic wastewater is mostly carried out using anaerobic reactors. The wastewater flows from the bottom to the top of the reactor, where pollutants are adsorbed and degraded by bacteria, and the purified water flows out from the top of the reactor.

[0003] Regarding the anaerobic reactor for sewage treatment, in the prior art, after searching, the utility model patent with the Chinese patent publication number CN113149206B discloses an anaerobic reactor for wastewater treatment, such as Figure 1 As shown, it mainly includes a tank body a, a water distributor b and a water inlet pipe k are provided at the bottom of the tank body a, a primary three-phase separator c and a secondary three-phase separator d are provided above the water distributor b in the tank body a, an anaerobic sludge particle layer e is provided between the primary three-phase separator c and the water distributor b and the secondary three-phase separator d, a gas-liquid separator f is provided above the tank body a, a downcomer g is connected between the gas-liquid separator f and the water distributor b, and a riser h is connected between the gas-liquid separator f and the primary three-phase separator c.

[0004] In the actual implementation process of the existing sewage treatment anaerobic reactor similar to the above technical solution, it was found that there are areas that need to be improved: the fluffiness of the anaerobic sludge particle layer needs to be improved to enhance the contact reaction between the sewage and the anaerobic sludge particle layer and improve the anaerobic reaction effect. Utility Model Content

[0005] In view of the deficiencies and defects in the prior art, the purpose of the present utility model is to provide an anaerobic reactor for sewage treatment, which solves the problem that the fluffiness of the anaerobic sludge particle layer in the prior art anaerobic reactor for sewage treatment needs to be improved, thereby improving the contact reaction between the sewage and the anaerobic sludge particle layer and improving the anaerobic reaction effect.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: an anaerobic reactor for sewage treatment, mainly comprising a tank body, a water distributor is provided at the bottom of the tank body, a first-level three-phase separator and a second-level three-phase separator are provided above the water distributor in the tank body, an anaerobic sludge granule layer is provided between the first-level three-phase separator and the water distributor and the second-level three-phase separator, a gas-liquid separator is provided above the tank body, a downcomer is connected between the gas-liquid separator and the water distributor, and a riser is connected between the gas-liquid separator and the first-level three-phase separator, an outlet pipe is provided on one side of the upper end of the tank body, the outlet pipe is connected to the water reservoir, the air outlet of the gas-liquid separator is connected to the exhaust pipe, a supporting vibration rod is provided in the anaerobic sludge granule layer, the cross-section of the supporting vibration rod is a triangle with the sharp corner facing downward, a vibration motor is provided in the supporting vibration rod, a return pipe is provided on the tank body, the upper end of the return pipe extends into the lower position of the second-level three-phase separator, and the lower end of the return pipe extends into the bottom of the tank body.

[0007] As a further improvement of the present invention, a ladder is provided on one side of the outer side of the tank body, extending from the bottom of the tank body to the top of the tank body, and a fence is provided on the top of the tank body.

[0008] As a further improvement of the present invention, a first medicine adding tube is provided on the tank body.

[0009] As a further improvement of the present invention, a maintenance manhole is provided on one side of the lower end of the tank body.

[0010] As a further improvement of the present invention, a second reagent adding pipe is provided on the reflux pipe.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. A supporting vibration rod is provided in the anaerobic sludge granule layer. The cross-section of the supporting vibration rod is a triangle with the pointed corner facing downward. A vibration motor is provided in the supporting vibration rod. The vibration motor can regularly drive the supporting rod to vibrate and shake, thereby reducing the compaction of the anaerobic sludge granule layer and keeping the anaerobic granule layer fluffy, thereby improving the contact reaction between the sewage and the anaerobic granule layer, improving the anaerobic reaction effect, and thus improving the organic matter purification effect of the sewage;

[0013] In addition, the cross-sectional shape of the supporting vibration rod is triangular. During the upward ascent of the biogas produced by the anaerobic reaction, the biogas is guided by the supporting vibration rod and separated outward along the two inclined surfaces of the triangular supporting vibration rod, so that the biogas diffuses relatively and further fills and expands the anaerobic granular layer, thereby improving the organic matter purification effect of the sewage. In addition, the triangular supporting vibration rod can support the anaerobic granular layer to a certain extent, reduce the compaction and adhesion of the anaerobic granular layer, thereby improving the contact reaction between the sewage and the anaerobic granular layer, and improving the organic matter purification effect of the sewage.

[0014] A return pipe is provided on the tank body, the upper end of the return pipe extends into the lower position of the secondary three-phase separator, and the lower end of the return pipe extends into the bottom of the tank body. Part of the sewage sludge mixture below the secondary three-phase separator can flow back into the bottom of the tank body, thereby forming a mixing zone at the bottom of the tank body, adjusting the pH value of the incoming sewage, and mixing with the sewage coming in from the water inlet pipe for anaerobic degradation reaction, thereby improving the sewage purification effect.

[0015] 2. By setting a ladder from the bottom of the tank to the top of the tank on the outside side of the tank and setting a fence on the top of the tank, it is convenient to climb the ladder to the top of the tank for maintenance. In addition, a fence is set on the top of the tank to improve the safety of personnel repairing the top of the tank.

[0016] 3. By providing a first reagent adding pipe on the tank body, biological reagents can be added to the sewage as needed to remove some substances in the sewage. In addition, a scale removal agent that removes or prevents the formation of scale can also be added to reduce the formation of scale on the inner wall of the tank.

[0017] 4. A maintenance manhole is provided on one side of the lower end of the tank body, so that maintenance personnel can enter the maintenance manhole for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 It is a structural diagram of the prior art;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model (excluding ladders and fences);

[0022] Figure 4 for Figure 3 Enlarged view at point A;

[0023] In the figure: 1. Tank body; 2. Water distributor; 3. Primary three-phase separator; 4. Secondary three-phase separator; 5. Anaerobic sludge granular layer; 6. Gas-liquid separator; 7. Downcomer; 8. Riser; 9. Outlet pipe; 10. Reservoir; 11. Exhaust pipe; 12. Supporting vibration rod; 13. Vibration motor; 14. Return pipe; 15. Ladder; 16. Fence; 17. First reagent addition pipe; 18. Inspection manhole; 19. Second reagent addition pipe. DETAILED DESCRIPTION

[0024] The following is combined with Figure 2-4 The present invention will be described in further detail. For a clearer illustration, only the structures related to the present invention are shown in the figures.

[0025] For the convenience of description, the coordinate system is defined as follows Figure 2 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0026] The present invention discloses an anaerobic reactor for treating sewage. Figure 2 and Figure 3 , mainly includes a tank body 1, a water distributor 2 is provided at the bottom of the tank body 1, a first-level three-phase separator 3 and a second-level three-phase separator 4 are provided above the water distributor 2 in the tank body 1, an anaerobic sludge granular layer 5 is provided between the first-level three-phase separator 3 and the water distributor 2 and the second-level three-phase separator 4, a gas-liquid separator 6 is provided above the tank body 1, a downcomer 7 is connected between the gas-liquid separator 6 and the water distributor 2, and a riser 8 is connected between the gas-liquid separator 6 and the first-level three-phase separator 3. The above structural arrangement and technical principles are the same as those of the prior art. In this embodiment, a maintenance manhole 18 is provided on one side of the lower end of the tank body 1, so that maintenance people can enter the maintenance manhole 18 for easy maintenance.

[0027] like Figure 3 and Figure 4 As shown, a water outlet pipe 9 is provided on one side of the upper end of the tank body 1, and the water outlet pipe 9 is connected to the water reservoir 10. The air outlet of the gas-liquid separator 6 is connected to the exhaust pipe 11. A supporting vibration rod 12 is provided in the anaerobic sludge granular layer 5. The cross-sectional shape of the supporting vibration rod 12 is a triangle with the pointed corner facing downward. A vibration motor 13 is provided in the supporting vibration rod 12. A return pipe 14 is provided on the tank body 1. The upper end of the return pipe 14 extends into the lower position of the secondary three-phase separator 4, and the lower end of the return pipe 14 extends into the bottom of the tank body 1.

[0028] like Figure 2 As shown, a ladder 15 is provided on one side of the outer side of the tank body 1 from the bottom of the tank body 1 to the top of the tank body 1, and a fence 16 is provided on the top of the tank body 1. The top of the tank body 1 can be climbed by climbing the ladder 15 to facilitate maintenance. In addition, the fence 16 is provided on the top of the tank body 1 to improve the safety of the personnel performing maintenance on the top of the tank body 1.

[0029] In addition, the tank body 1 is provided with a first agent addition pipe 17, which can be used to add biological agents to the sewage as needed to remove some substances in the sewage. In addition, a scale removal agent that removes or prevents the formation of scale can also be added to reduce the formation of scale on the inner wall of the tank body 1. Similarly, the return pipe 14 is provided with a second agent addition pipe 19.

[0030] The utility model provides a supporting vibration rod 12 in the anaerobic sludge granular layer 5. The cross-sectional shape of the supporting vibration rod 12 is a triangle with the pointed corner facing downward. The supporting vibration rod 12 is provided with a vibration motor 13. The vibration motor 13 can regularly drive the supporting rod to vibrate and shake, thereby reducing the compaction of the anaerobic sludge granular layer 5 and keeping the anaerobic granular layer fluffy, thereby improving the contact reaction between the sewage and the anaerobic granular layer, improving the anaerobic reaction effect, and thus improving the organic matter purification effect of the sewage.

[0031] In addition, the cross-sectional shape of the supporting vibration rod 12 is triangular. During the upward ascent of the biogas produced by the anaerobic reaction, the biogas is guided by the supporting vibration rod 12 and separated outward along the two inclined surfaces of the triangular supporting vibration rod 12, so that the biogas diffuses relatively and further fills and expands the anaerobic granular layer, thereby improving the organic matter purification effect of the sewage. In addition, the triangular supporting vibration rod 12 can support the anaerobic granular layer to a certain extent, reduce the compaction and adhesion of the anaerobic granular layer, thereby improving the contact reaction between the sewage and the anaerobic granular layer, and improving the organic matter purification effect of the sewage.

[0032] A return pipe 14 is provided on the tank body 1, the upper end of the return pipe 14 extends into the lower position of the secondary three-phase separator 4, and the lower end of the return pipe 14 extends into the bottom of the tank body 1, so that part of the sewage sludge mixture below the secondary three-phase separator 4 can flow back into the bottom of the tank body 1, thereby forming a mixing zone at the bottom of the tank body 1, adjusting the pH value of the incoming sewage, and mixing with the sewage coming in from the water inlet pipe for anaerobic degradation reaction, thereby improving the sewage purification effect.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. It should be understood that the specific embodiments described here are only used to understand the present utility model and are not used to limit the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

Claims

1. An anaerobic reactor for sewage treatment, mainly comprising a tank body, a water distributor at the bottom of the tank body, a primary three-phase separator and a secondary three-phase separator above the water distributor in the tank body, an anaerobic sludge particle layer between the primary three-phase separator and the water distributor and the secondary three-phase separator, a gas-liquid separator above the tank body, a downcomer connected between the gas-liquid separator and the water distributor, a riser connected between the gas-liquid separator and the primary three-phase separator, and a water outlet pipe provided on one side of the upper end of the tank body, characterized in that: The outlet pipe is connected to the water tank, the air outlet of the gas-liquid separator is connected to the exhaust pipe, a supporting vibration rod is provided in the anaerobic sludge granular layer, the cross-sectional shape of the supporting vibration rod is a triangle with the pointed corner facing downward, a vibration motor is provided in the supporting vibration rod, a return pipe is provided on the tank body, the upper end of the return pipe extends into the lower position of the secondary three-phase separator, and the lower end of the return pipe extends into the bottom of the tank body.

2. The anaerobic reactor for sewage treatment according to claim 1, characterized in that: A ladder is provided on one side of the outer side of the tank body, extending from the bottom of the tank body to the top of the tank body, and a fence is provided on the top of the tank body.

3. The anaerobic reactor for sewage treatment according to claim 1, characterized in that: The tank body is provided with a first medicine adding pipe.

4. The anaerobic reactor for sewage treatment according to claim 1, characterized in that: A maintenance manhole is provided on one side of the lower end of the tank body.

5. The anaerobic reactor for sewage treatment according to claim 1, characterized in that: The reflux pipe is provided with a second reagent adding pipe.

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