MBR (Membrane Bioreactor) with inclined plate sedimentation device additionally arranged between biochemical pool and membrane pool

Abstract

The utility model discloses an MBR (Membrane Biological Reactor) with an inclined plate sedimentation device additionally arranged between a biochemical pool and a membrane pool. The MBR comprises the biochemical pool, a clean water pool, the membrane pool and a filtering piece, the clean water tank is located in the middle of the biochemical tank and the membrane tank, the biochemical tank is located on one side of the clean water tank, the membrane tank is located on the other side of the clean water tank, the filter part is located at the top of the clean water tank, a first partition plate is fixed between the biochemical tank and the clean water tank, a second partition plate is fixed between the clean water tank and the membrane tank, and the filter part comprises a filter pipe, leakage holes and a square groove; wherein the filter pipe is fixed on the inner surface of the top of the clean water tank, and the leak holes are formed in the bottom end of the filter pipe. The utility model aims to solve the problems that the sludge concentration of a membrane pool is in a high-concentration state for a long time (always higher than the sludge concentration of an oxygen pool) because the traditional MBR sewage treatment generally adopts a treatment process that a biochemical pool directly overflows to the membrane pool, and the sludge accumulation between membranes and the intensified membrane pollution are easily caused by long-term operation, so that the water yield is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage and wastewater treatment, in particular to an MBR membrane bioreactor with an inclined plate sedimentation device added between a biochemical pool and a membrane pool. Background Art

[0002] MBR membrane bioreactor, referred to as MBR, is a new water treatment technology that combines membrane separation technology with biological treatment technology. It provides an effective solution for modern sewage treatment and water resource reuse through the combination of membrane technology and biological treatment. It is widely used in industrial wastewater treatment, sewage reuse and other fields, especially in areas with scarce water resources or occasions with high requirements for water quality.

[0003] Traditional MBR wastewater treatment usually adopts a treatment process in which the biochemical pool overflows directly into the membrane pool, causing the sludge concentration in the membrane pool to be in a high concentration state for a long time (always higher than the sludge concentration in the oxygen pool). Long-term operation can easily cause sludge accumulation between membranes and increased membrane pollution, which in turn leads to a significant decrease in water production. Utility Model Content

[0004] The utility model aims to provide an MBR membrane bioreactor with an inclined plate sedimentation device added between the biochemical pool and the membrane pool, so as to solve the problem raised in the above-mentioned background technology that traditional MBR sewage treatment usually adopts a treatment process in which the biochemical pool directly overflows into the membrane pool, resulting in the sludge concentration in the membrane pool being in a high concentration state for a long time (always higher than the sludge concentration in the oxygen pool), and long-term operation is prone to cause sludge accumulation between membranes and aggravated membrane pollution, thereby causing a significant decrease in water production.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an MBR membrane bioreactor with an inclined plate sedimentation device added between a biochemical pool and a membrane pool, comprising:

[0007] Biochemical pools, clean water pools, membrane pools and filters;

[0008] The clean water pool is located in the middle of the biochemical pool and the membrane pool, the biochemical pool is located on one side of the clean water pool, the membrane pool is located on the other side of the clean water pool, and the filter element is located on the top of the clean water pool.

[0009] Furthermore, a first partition is fixed between the biochemical pool and the clean water pool, and a second partition is fixed between the clean water pool and the membrane pool.

[0010] Further, the filter element comprises a filter tube, a leak hole and a square groove;

[0011] The filter tube is fixed on the inner surface of the top of the clear water tank, the leakage hole is opened inside the bottom of the filter tube, and the square groove is opened on the top of one side of the filter tube.

[0012] Furthermore, an inclined groove is provided inside the bottom end of the first partition, an inclined plate is fixed inside the inclined groove, and the inclined plate is located inside the clear water tank.

[0013] Furthermore, the first output pipe is fixed inside the top of the inclined plate, the filter tube and the top end of the second partition plate.

[0014] Furthermore, a module is fixed inside the membrane pool, a second output pipe is fixed on the top of the module, and the top end of the second output pipe penetrates and is connected to the inside of the second partition.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The utility model, through the arranged inclined plate and filter element, when the sewage inside the biochemical pool is discharged into the clean water pool through the inclined trough, the dirt in the sewage moves down with the inclined plate and is thus returned to the biochemical pool, and the sewage is filtered through the filter tube, and then the filtered sewage is discharged from the first output pipe into the membrane pool, and the module works in the membrane pool, so that the filtered water is transmitted to the clean water pool through the second output pipe. This scheme makes the sludge concentration of the biochemical pool independent of the sludge concentration of the membrane pool, and can well control the sludge accumulation problem between the membrane groups, thereby making the membrane pollution controllable, and stabilizing the water production to ensure the long-term and efficient operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of a cross-sectional view of the utility model;

[0019] Figure 2 It is a front view of the cross-sectional surface of the utility model;

[0020] Figure 3 This is a structural diagram of the filter element of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Biochemical pool; 2. Clean water pool; 3. Membrane pool; 4. First baffle; 5. Second baffle; 6. Inclined slot; 7. Inclined plate; 8. Filter element; 81. Filter tube; 82. Leak hole; 83. Square slot; 9. First output pipe; 10. Module; 11. Second output pipe. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] See also Figure 1-Figure 3 As shown, this embodiment is an MBR membrane bioreactor with an inclined plate settling device added between the biochemical pool and the membrane pool, comprising:

[0027] Biochemical pool 1, clean water pool 2, membrane pool 3 and filter element 8;

[0028] The clean water tank 2 is located in the middle of the biochemical tank 1 and the membrane tank 3. The biochemical tank 1 is located on one side of the clean water tank 2, the membrane tank 3 is located on the other side of the clean water tank 2, and the filter element 8 is located on the top of the clean water tank 2.

[0029] The biochemical pool 1 is the main place for biodegradation in the MBR system, where the microorganisms in the activated sludge decompose and transform the organic pollutants, thereby achieving the initial purification of the sewage; the clear water pool 2 receives the treated water from the membrane pool 3, where the water has been degraded by microorganisms, and the water quality has been improved to a certain extent; the membrane pool 3 is the core part of the MBR process, and the ultrafiltration and microfiltration membrane components therein serve as mud-water separation units, which can completely intercept the microorganisms and particulate matter in the reaction pool, so that the effluent reaches a higher water quality standard, and the filter element 8 is used to filter the sewage inside the biochemical pool 1 and discharge it into the membrane pool 3;

[0030] A first partition plate 4 is fixed between the biochemical pool 1 and the clean water pool 2, and a second partition plate 5 is fixed between the clean water pool 2 and the membrane pool 3;

[0031] The first partition plate 4 is used to isolate the space between the biochemical pool 1 and the clean water pool 2, and the second partition plate 5 is used to isolate the space between the biochemical pool 1 and the clean water pool 2;

[0032] The filter element 8 includes a filter tube 81, a leak hole 82 and a square groove 83;

[0033] The filter tube 81 is fixed to the inner surface of the top of the clean water tank 2, the leak hole 82 is opened inside the bottom of the filter tube 81, and the square groove 83 is opened on the top of one side of the filter tube 81;

[0034] The filter tube 81 is used to filter dirt from the sewage, the leak hole 82 is used to keep the dirt inside the filter tube 81, and the square groove 83 is used to reduce the load on the filter tube 81, so that the sewage has stronger fluidity;

[0035] An inclined groove 6 is provided inside the bottom end of the first partition plate 4, an inclined plate 7 is fixed inside the inclined groove 6, and the inclined plate 7 is located inside the clear water tank 2;

[0036] The chute 6 is provided for draining sewage to the top of the inclined plate 7, and the inclined plate 7 is used to return the dirt to the inside of the biochemical pool 1;

[0037] The first output pipe 9 is fixed inside the top of the inclined plate 7, the filter tube 81 and the top of the second partition plate 5;

[0038] The first output pipe 9 is used to discharge the pretreated sewage into the membrane pool 3;

[0039] A module 10 is fixed inside the membrane pool 3, a second output pipe 11 is fixed on the top of the module 10, and the top end of the second output pipe 11 penetrates and connects to the inside of the second partition plate 5;

[0040] The module 10 refers to the membrane component part of the MBR system, which is the key to achieve mud-water separation, and the second output pipe 11 is used to discharge the treated clean water into the clean water tank 2;

[0041] When the sewage in the biochemical pool 1 is discharged into the clean water pool 2 through the chute 6, the dirt in the sewage moves down along the inclined plate 7 and returns to the biochemical pool 1, and the sewage is filtered through the filter pipe 81, and then the filtered sewage is discharged from the first output pipe 9 into the membrane pool 3, and the module 10 works in the membrane pool 3, so as to pass the filtered water into the clean water pool 2 through the second output pipe 11;

[0042] This step makes the sludge concentration in the biochemical pool 1 independent of the sludge concentration in the membrane pool 3, and can effectively control the sludge accumulation problem between the membrane groups, thereby making the membrane pollution controllable, stabilizing the water production and ensuring the long-term efficient operation of the system.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An MBR membrane bioreactor with an inclined plate settling device added between the biochemical pool and the membrane pool, characterized in that: include: A biochemical pool (1), a clean water pool (2), a membrane pool (3) and a filter element (8); The clean water tank (2) is located in the middle of the biochemical tank (1) and the membrane tank (3), the biochemical tank (1) is located on one side of the clean water tank (2), the membrane tank (3) is located on the other side of the clean water tank (2), and the filter element (8) is located on the top of the clean water tank (2); A first partition plate (4) is fixed between the biochemical pool (1) and the clean water pool (2), and a second partition plate (5) is fixed between the clean water pool (2) and the membrane pool (3); The filter element (8) comprises a filter tube (81), a leak hole (82) and a square groove (83); The filter tube (81) is fixed to the inner surface of the top of the clean water tank (2), the leakage hole (82) is opened inside the bottom of the filter tube (81), and the square groove (83) is opened on the top of one side of the filter tube (81); An inclined groove (6) is provided inside the bottom end of the first partition plate (4), an inclined plate (7) is fixed inside the inclined groove (6), and the inclined plate (7) is located inside the clear water tank (2).

2. The MBR membrane bioreactor according to claim 1, wherein an inclined plate settling device is added between the biochemical pool and the membrane pool, characterized in that: The first output pipe (9) is fixed inside the top of the inclined plate (7), the filter pipe (81) and the top end of the second partition plate (5).

3. The MBR membrane bioreactor according to claim 1, wherein an inclined plate settling device is added between the biochemical pool and the membrane pool, characterized in that: A module (10) is fixed inside the membrane pool (3), a second output pipe (11) is fixed on the top of the module (10), and the top end of the second output pipe (11) penetrates and is connected to the inside of the second partition plate (5).

Images