Anaerobic reactor for providing sludge interception and microorganism attachment growth conditions

Abstract

The utility model discloses an anaerobic reactor for providing sludge interception and microorganism attachment growth conditions, and relates to the technical field of anaerobic reactors in the fields and industries such as wastewater treatment, biological energy generation, agricultural waste treatment, the brewing industry and the paper pulp and paper industry. Six second-stage water segregators are uniformly distributed on the circumference of the first-stage water segregator, six water distribution branch pipes are uniformly arranged on the six second-stage water segregators, and the six water distribution branch pipes are all provided with water distribution pipe openings. Sludge discharged into the reactor through the first-stage water distributor and the second-stage water distributor forms continuous one-way stirring in the reactor, so that the hydraulic condition is improved, water distribution is uniform, the sludge-water mixing effect is good, and chemicals are saved.

Description

Technical Field

[0001] The utility model relates to the field of anaerobic reactors in the fields and industries of wastewater treatment, bioenergy generation, agricultural waste treatment, brewing and pulp and paper industry, and in particular to an anaerobic reactor providing conditions for intercepting sludge and microbial attachment and growth. Background Art

[0002] Traditional wastewater treatment methods have the problems of high energy consumption and high chemical consumption, and also require the treatment of a large amount of sludge. Anaerobic reactor technology achieves energy self-sufficiency and waste reduction in wastewater treatment by utilizing the degradation ability of anaerobic microorganisms, thereby reducing treatment costs. The EGSB (Expanded Granular Sludge Bed) reactor is a bioreactor used for wastewater treatment. It is a fixed bed reactor that uses microorganisms attached to granular sludge for wastewater treatment. The main features of the EGSB reactor are high organic load treatment capacity, low anaerobic sludge production, and high gas and liquid separation efficiency. The reactor is filled with a special granular sludge to form a granular sludge bed. The wastewater flows upward through the bed, and the microorganisms in the bed attach to the granular sludge, using the organic matter in the wastewater for biodegradation reactions. The anaerobic sludge particles in the EGSB reactor are key components. They have highly active anaerobic microorganisms that can effectively decompose organic matter and can efficiently remove organic pollutants. However, the EGSB reactor is sensitive to changes in influent water quality. If the influent water quality changes drastically, such as the presence of toxic substances or sudden pH changes, it may have an adverse effect on the microbial community and reduce the treatment effect. In addition, due to the need to cultivate a microbial community that adapts to the characteristics of the wastewater, the reactor may take weeks or even months to achieve a stable treatment effect during the initial operation stage.

[0003] When traditional anaerobic reactors transport sewage into the reactor, there is only one or several pipes to supply water, resulting in uneven distribution of water entering the reactor. The load on the biological particle bed is unbalanced, which will affect the microbial community in the bed, causing compression or accumulation of the biological particle bed, reducing the aeration and mass transfer performance of the reactor, and further affecting the performance of the reactor. Utility Model Content

[0004] The utility model aims to solve the disadvantage of improper water distribution of the anaerobic reactor in the prior art and proposes an anaerobic reactor which provides conditions for intercepting sludge and attaching and growing microorganisms.

[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] An anaerobic reactor that provides conditions for intercepting sludge and attaching and growing microorganisms comprises a box body, wherein a primary water distributor is arranged at the center of the bottom of the box body, six secondary water distributors are evenly distributed on the circumference of the primary water distributor, six water distribution branches are evenly arranged on the six secondary water distributors, and the six water distribution branches are all provided with water distribution pipe openings.

[0007] Preferably, a three-phase separator is provided in the box body, and the three-phase separator is located above the suspended sludge layer.

[0008] Preferably, a three-phase separator is provided in the box body, and the three-phase separator is located above the suspended sludge layer.

[0009] Preferably, one side of the box body is also provided with an internal circulation pump located between the three-phase separator and the sludge retention plate, and the input end of the internal circulation pump is connected to, and the other output end is connected to the box body on one side of the granular sludge layer through a water pipe.

[0010] Preferably, a water outlet is provided on one side of the top of the box body.

[0011] Preferably, a mud discharge port is provided on one side of the bottom of the box body.

[0012] Preferably, a water inlet pipe is provided on one side of the lower end of the box body, and the water inlet pipe is connected to the primary water distributor.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the water inlet pipe delivers sewage to the anaerobic reactor, and the sewage is discharged into the sludge of the reactor through the primary water divider and the secondary water divider. Due to the arrangement of six secondary water dividers and six water distribution branches located on the secondary water dividers, when the sewage is transported to the reactor, a vortex shape is generated, forming a continuous unidirectional stirring in the reactor, so that the water distribution is uniform, and the performance of the reactor is improved;

[0015] 2. In the utility model, the internal circulation pump sucks out the sewage mud in the suspended sludge layer and returns the suspended sludge to the granular sludge layer. The internal circulation pump uses the return water to neutralize the pH value of the inlet water, thereby saving pH adjusting agents. The sludge is circulated through the internal circulation pump to reduce the loss of sludge particles. When the internal reflux pump is turned on, the reaction conditions during normal operation can be close to each other, which is conducive to bacterial acclimation and reactor restart. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the water distribution cross-section structure of the utility model.

[0019] Serial numbers in the figure: 1. water outlet; 2. three-phase separator; 3. suspended sludge layer; 4. sludge retention plate; 5. granular sludge layer; 6. sludge discharge port; 7. water intake port; 8. internal circulation pump; 9. water inlet pipe; 10. box; 11. primary water separator; 12. secondary water separator. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1: This example provides an anaerobic reactor that provides conditions for intercepting sludge and microbial attachment and growth, see Figure 1-2 Specifically, it includes a box body 10, a primary water distributor 11 is provided at the center of the bottom of the box body 10, six secondary water distributors 12 are evenly distributed on the circumference of the primary water distributor 11, six water distribution branches are evenly provided on the six secondary water distributors 12, and the six water distribution branches are all provided with water distribution pipe ports, and a water inlet pipe 9 is provided on one side of the lower end of the box body 10, and the water inlet pipe 9 is connected to the primary water distributor 11;

[0022] The difference between the outlet pressure of the water distribution point pipe and the pressure in the water inlet main pipe of the first-level water distributor 11 is equal (or approximately equal), thereby ensuring that the water distribution per unit area in the anaerobic reactor is as uniform and constant as possible; the water inlet pipe 9 sends the sewage to the first-level water distributor 11, and is discharged into the sludge of the reactor through the first-level water distributor 11 and the second-level water distributor 12, forming a continuous unidirectional stirring in the reactor, so that the hydraulic conditions are improved, the water distribution is uniform, and the mud-water mixing effect is good. The agent added in the anaerobic reactor for treating the sludge is completely broken up and merged with the sludge, thereby achieving the effect of saving agents.

[0023] Embodiment 2: Based on Embodiment 1, this embodiment further includes:

[0024] In the specific implementation process, Figure 1 and Figure 2As shown, a granular sludge layer 5 is formed in the box body 10, a sludge retention plate 4 is provided above the granular sludge layer 5, a suspended sludge layer 3 is provided above the sludge retention plate 4, a three-phase separator 2 is provided in the box body 10, and the three-phase separator 2 is located above the suspended sludge layer 3. A water suction port 7 located between the three-phase separator 2 and the sludge retention plate 4 is also provided on one side of the box body 10. An internal circulation pump 8 is also provided on one side of the box body 10, and the input end of the internal circulation pump 8 is connected to the water suction port 7, and the output end is connected to the box body 10 on the side of the granular sludge layer 5 through a water pipe. A water outlet 1 is provided on one side of the top of the box body 10, and a mud discharge port 6 is provided on one side of the bottom of the box body 10;

[0025] As the microorganisms in the sludge decompose the organic matter in the sewage and convert it into biogas, the stirring of the biogas forms a sludge with a relatively thin sludge concentration, and the sludge rises together with water into the three-phase separator 2. When the biogas hits the reflector plate at the bottom of the separator, it bends to the surroundings of the reflector plate, and then passes through the water layer into the air chamber above, where the biogas is concentrated and discharged through a conduit. The solid-liquid mixture enters the sedimentation area of ​​the three-phase separator 2 after reflection, and the sludge in the sewage flocculates, and the particles gradually increase in size and settle under the action of gravity, and are blocked by the sludge retention plate 4. The internal circulation pump 8 sucks out the sewage water in the suspended sludge layer 3 and returns the suspended sludge to the granular sludge layer 5. The internal circulation pump 8 uses the reflux water to neutralize the pH value of the inlet water, thereby saving pH adjusting agents. The sludge is circulated through the internal circulation pump 8 to reduce the loss of sludge particles. As the particles become larger and a large amount of sludge accumulates, the treated effluent separated from the sludge will rise, and then be discharged from the outlet 1, and finally the sludge may be discharged from the sludge outlet 6.

[0026] Specifically, the working principle and operation method of the utility model are as follows:

[0027] The water inlet pipe 9 sends the sewage to the primary water separator 11, and then it is discharged into the sludge of the reactor through the primary water separator 11 and the secondary water separator 12, forming a continuous unidirectional agitation in the reactor;

[0028] As the microorganisms in the sludge decompose the organic matter in the sewage and convert it into biogas, the stirring of the biogas forms a sludge with a relatively thin sludge concentration, and the sludge rises together with water into the three-phase separator 2. When the biogas hits the reflector plate at the bottom of the separator, it bends to the surroundings of the reflector plate, and then passes through the water layer into the air chamber above, where the biogas is concentrated and discharged through a conduit. The solid-liquid mixture enters the sedimentation area of ​​the three-phase separator 2 after reflection, and the sludge in the sewage flocculates, and the particles gradually increase in size and settle under the action of gravity, and are blocked by the sludge retention plate 4. The internal circulation pump 8 sucks out the sewage water in the suspended sludge layer 3 and returns the suspended sludge to the granular sludge layer 5. The internal circulation pump 8 uses the reflux water to neutralize the pH value of the inlet water, thereby saving pH adjusting agents. The sludge is circulated through the internal circulation pump 8 to reduce the loss of sludge particles. As the particles become larger and a large amount of sludge accumulates, the treated effluent separated from the sludge will rise, and then be discharged from the outlet 1, and finally the sludge may be discharged from the sludge outlet 6.

[0029] 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. An anaerobic reactor providing conditions for sludge retention and microbial attachment and growth, comprising a housing (10), characterized in that: A primary water distributor (11) is provided at the center of the bottom of the box body (10), six secondary water distributors (12) are evenly distributed on the circumference of the primary water distributor (11), six water distribution branch pipes are evenly provided on the six secondary water distributors (12), and the six water distribution branch pipes are all provided with water distribution pipe openings.

2. The anaerobic reactor for providing conditions for sludge retention and microbial attachment and growth according to claim 1, characterized in that: A granular sludge layer (5) is formed in the box body (10), a sludge retention plate (4) is provided above the granular sludge layer (5), and a suspended sludge layer (3) is provided above the sludge retention plate (4).

3. The anaerobic reactor for providing conditions for sludge retention and microbial attachment and growth according to claim 2, characterized in that: A three-phase separator (2) is arranged in the box (10), and the three-phase separator (2) is located above the suspended sludge layer (3).

4. The anaerobic reactor for providing conditions for sludge retention and microbial attachment and growth according to claim 3, characterized in that: One side of the box body (10) is also provided with a water suction port (7) located between the three-phase separator (2) and the sludge retention plate (4), and one side of the box body (10) is also provided with an internal circulation pump (8), and the input end of the internal circulation pump (8) is connected to the water suction port (7), and the other output end is connected to the box body (10) on one side of the granular sludge layer (5) through a water pipe.

5. The anaerobic reactor for providing conditions for sludge retention and microbial attachment and growth according to claim 1, characterized in that: A water outlet (1) is provided on one side of the top of the box body (10).

6. The anaerobic reactor for providing conditions for sludge retention and microbial attachment and growth according to claim 1, characterized in that: A mud discharge port (6) is provided on one side of the bottom of the box body (10).

7. The anaerobic reactor for providing conditions for intercepting sludge and attaching and growing microorganisms according to claim 1, characterized in that: A water inlet pipe (9) is provided on one side of the lower end of the box body (10), and the water inlet pipe (9) is connected to the primary water distributor (11).

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