System for preventing MBR (Membrane Bioreactor) sludge from overexaeration decomposition

Abstract

The utility model particularly relates to a system for preventing MBR (Membrane Biological Reactor) sludge from overexposed decomposition, which comprises an MBR tank, a biological tank, a sedimentation tank, an MBR membrane tank and a transfer tank are sequentially arranged in the MBR tank, the system further comprises a sludge concentration tank, the sludge concentration tank is connected with a sludge reflux pump, the input end of the sludge reflux pump is connected with a sludge conveying pipe, and the output end of the sludge conveying pipe is connected with a sludge pump. The sludge conveying pipe is respectively connected to the bottoms of the biological tank, the sedimentation tank and the MBR membrane tank, the transfer tank is respectively connected with a filter pump and an adjusting tank, the filter pump is connected with a multi-medium filter device, and the multi-medium filter device is also respectively connected to the connecting point of the adjusting tank and the steam pipeline. The sludge reflux pump has the beneficial effects that the sludge reflux pump with the structure conveys sludge at the bottoms of the biological tank, the sedimentation tank and the MBR membrane tank to the sludge concentration tank, so that the problem that the sludge is accumulated for a long time and needs to be cleaned regularly to cause inconvenience in use is solved.

Description

Technical Field

[0001] The utility model particularly relates to a system for preventing MBR sludge from being over-aerated and disintegrated. Background Art

[0002] As a special sewage treatment device that uses membrane bioreactor as the main filtration and purification method, MBR sewage treatment device can efficiently remove most of the suspended matter and corresponding bacteria in sewage through special reaction membranes of different specifications, making the turbidity of sewage close to zero after purification.

[0003] To this end, the patent specification with publication number CN206872519U discloses an integrated MBR sewage treatment device, which includes a shell, the interior of which is separated into an anoxic zone and an aerobic MBR zone by a first partition; the second partition and the third partition each have a through hole, the inner diameter of the through hole being smaller than the outer diameter of the filler; the filler is arranged in the second zone, and the second and third partitions arranged above and below separate the anoxic zone into the first zone, the second zone, and the third zone from top to bottom; the inlet end of the conveying unit is arranged in the aerobic MBR zone, and the outlet end is arranged in the anoxic zone; the MBR membrane assembly is arranged in the aerobic MBR zone; a pipeline transmits the treated sewage output by the MBR membrane assembly and discharges it from the shell; and an aeration unit is respectively arranged in the anoxic zone and the aerobic MBR zone. The present invention has the advantages of good treatment effect and small floor space. The above-mentioned MBR sewage treatment device has good treatment effect when used.

[0004] However, there are still problems: sludge accumulates in the aerobic MBR area for a long time, requiring regular cleaning, which is inconvenient to use. In addition, the sludge is over-aerated and disintegrated in the aerobic MBR area, which can easily cause clogging of the MBR membranes within the MBR unit, resulting in frequent replacement of the MBR membranes and increased operating costs. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a system for preventing over-aeration and disintegration of MBR sludge, which is easy to use and reduces the cost of use.

[0006] According to the utility model, a system for preventing MBR sludge from being overaerated and disintegrated includes an MBR pool, wherein a biological pool, a sedimentation tank, an MBR membrane pool and a transfer tank are sequentially arranged in the MBR pool, and the MBR pool also includes a sludge concentration pool, the sludge concentration pool is connected to a sludge return pump, the input end of the sludge return pump is connected to a sludge delivery pipe, the sludge delivery pipe is respectively connected to the bottom of the biological pool, the sedimentation tank and the MBR membrane pool, the transfer pool is respectively connected to a filter pump and a regulating tank, the filter pump is connected to a multi-media filter device, and the multi-media filter device is also respectively connected to the regulating tank and a steam pipeline connection point.

[0007] Specifically, an MBR membrane device is provided in the MBR membrane pool.

[0008] Specifically, the biological pool is connected to a water intake pool.

[0009] Specifically, a water supply pump is provided in the water intake pool, and the output port of the water supply pump extends into the biological pool 101 .

[0010] Specifically, the water intake tank is connected to an aeration tank.

[0011] Specifically, a second fan is further included, and the air outlet end of the second fan is placed in the water intake pool.

[0012] Specifically, it further includes a first fan connected to the MBR membrane device.

[0013] The beneficial effects of the present invention are as follows: the sludge return pump of this structure transports the sludge on the bottom of the biological pool, sedimentation tank and MBR membrane pool to the sludge concentration pool, thereby solving the problem of long-term accumulation of sludge and the need for regular cleaning, and making it convenient to use; in addition, the sludge is discharged uniformly to prevent the sludge from entering the MBR membrane pool, causing clogging of the MBR membrane, resulting in the need for frequent replacement of the MBR membrane and increased use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] The markings shown in the figure are as follows:

[0017] MBR tank 1, biological tank 101, sedimentation tank 102, MBR membrane tank 103, transfer tank 104, MBR membrane device 105, aeration tank 2, water intake tank 3, water supply pump 301, regulating tank 4, steam pipe connection point 5, multi-media filtration equipment 6, sludge return pump 7, filter pump 8, sludge thickening tank 9, first fan 10, second fan 11. DETAILED DESCRIPTION

[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0019] Reference below Figure 1A system for preventing MBR sludge from being overaerated and disintegrated according to an embodiment of the present invention is described, comprising an MBR tank 1, wherein the MBR tank 1 is provided with a biological tank 101, a sedimentation tank 102, an MBR membrane tank 103 and a transfer tank 104 in sequence, and further comprising a sludge thickening tank 9, the sludge thickening tank 9 being connected to a sludge return pump 7, the input end of the sludge return pump 7 being connected to a mud delivery pipe, the mud delivery pipe being respectively connected to the bottom of the biological tank 101, the sedimentation tank 102 and the MBR membrane tank 103, the transfer tank 104 being respectively connected to a filter pump 8 and a regulating tank 4, the filter pump 8 being connected to a multi-media filter device 6, the multi-media filter device 6 being further respectively connected to the regulating tank 4 and the steam pipe connection point 5.

[0020] The sludge return pump 7 of this structure transports the sludge on the bottom of the biological pool 101, the sedimentation pool 102 and the MBR membrane pool 103 to the sludge thickening pool 9, which solves the problem of long-term accumulation of sludge, which requires regular cleaning and causes inconvenience in use. The sludge thickening pool 9 is used to collect sludge. In addition, an MBR membrane device 105 is provided in the MBR membrane pool 103 of this structure. This structure effectively prevents the over-aeration and disintegration of sludge, avoids frequent replacement of MBR membranes, and reduces costs. Furthermore, the "biological pool" is also commonly called an anaerobic pool or an aerobic pool or a biological contact oxidation pool. The biological contact oxidation pool includes a pool body, filler and a water distribution device.

[0021] The biological pool 101 of this structure is connected to the water intake pool 3. The water intake pool 3 of this structure is provided with a water supply pump 301, and the output port of the water supply pump 301 extends into the biological pool 101.

[0022] In this structure, the water intake tank 3 is connected to the aeration tank 2. The aeration tank 2 not only provides oxygen but also agitation. Oxygen supply is used to provide oxygen to the flocs or biofilms. By properly controlling the oxygen content and other conditions suitable for microbial survival, the microorganisms can maximize their aerobic respiration, achieving the goal of removing pollutants.

[0023] The present structure further comprises a second fan 11, the air outlet of which is placed in the water intake pool 3. The present structure further comprises a first fan 10, which is connected to the MBR membrane device 105. The first fan 10 can deliver air to the MBR membrane device 105.

[0024] Raw water enters the water intake tank 3 and is pumped into the biochemical tank 101 via the water supply pump 301. The biochemical tank 101 is equipped with a liftable aeration pipe and biological fillers for biochemical treatment to remove organic matter. The water then enters the intermediate sedimentation tank 102 for sludge sedimentation. The supernatant enters the MBR membrane tank 103. The MBR membrane tank 103 is equipped with aeration and an MBR membrane device 105. The clean water filtered by the MBR membrane device 105 is discharged into the transfer tank, and the sludge is discharged into the front biochemical tank 101. The water in the transfer tank 104 enters the multi-media filter device 6 and the activated carbon filter through the filter pump 8, and then enters the miscellaneous water tank, and is then pumped to various water use points.

[0025] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A system for preventing over-aeration and disintegration of MBR sludge, comprising an MBR tank (1), characterized in that: The MBR tank (1) is provided with a biological tank (101), a sedimentation tank (102), an MBR membrane tank (103) and a transfer tank (104) in sequence, and also includes a sludge concentration tank (9). The sludge concentration tank (9) is connected to a sludge return pump (7). The input end of the sludge return pump (7) is connected to a sludge delivery pipe, and the sludge delivery pipe is respectively connected to the bottom of the biological tank (101), the sedimentation tank (102) and the MBR membrane tank (103). The transfer tank (104) is respectively connected to a filter pump (8) and a regulating tank (4). The filter pump (8) is connected to a multi-media filter device (6). The multi-media filter device (6) is also respectively connected to the regulating tank (4) and the steam pipeline connection point (5).

2. The system for preventing MBR sludge from over-aeration and disintegration according to claim 1, characterized in that: An MBR membrane device (105) is provided in the MBR membrane pool (103).

3. The system for preventing MBR sludge from over-aeration and disintegration according to claim 1, characterized in that: The biological pool (101) is connected to a water intake pool (3).

4. The system for preventing MBR sludge from over-aeration and disintegration according to claim 3, characterized in that: A water supply pump (301) is provided in the water intake pool (3), and an output port of the water supply pump (301) extends into the biological pool (101).

5. The system for preventing over-aeration and disintegration of MBR sludge according to claim 3, characterized in that: The water intake tank (3) is connected to the aeration tank (2).

6. The system for preventing over-aeration and disintegration of MBR sludge according to claim 3, characterized in that: It also includes a second fan (11), and the air outlet end of the second fan (11) is placed in the water intake pool (3).

7. The system for preventing over-aeration and disintegration of MBR sludge according to claim 3, characterized in that: It also includes a first fan (10), which is connected to the MBR membrane device (105).

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