CN113480009A

CN113480009A - Membrane aeration sewage treatment system

Info

Publication number: CN113480009A
Application number: CN202110968692.9A
Authority: CN
Inventors: 朱圆圆; 杜平; 林茜茜
Original assignee: Zhejiang Chuangqi Environmental Protection Technology Co ltd
Current assignee: Zhejiang Chuangqi Environmental Protection Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-10-08

Abstract

The invention discloses a membrane aeration sewage treatment system, and relates to the technical field of sewage treatment, wherein a water inlet pipeline is connected with a water inlet of a reactor, a water outlet pipeline is connected with a water outlet of the reactor, an MABR membrane component is arranged in the reactor, an aeration system is arranged below the MABR membrane component, a gas supply pipeline is respectively connected with the MABR membrane component and the aeration system, a sludge discharge system is arranged at the bottom of the reactor, a plurality of water outlets are arranged, and the water outlets are sequentially arranged along the radial direction of the reactor. The reactor has high integration degree, can use the reactor to carry out simple biomembrane test and membrane aeration bioreactor test, can also carry out fixed biomembrane-activated sludge process test, can effectively adjust the treatment process and the treatment capacity of the waste water and the retention time of each reaction process in the waste water treatment process, greatly reduces the occupied area and the water quantity required by the test, and simplifies the test preparation process.

Description

Membrane aeration sewage treatment system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a membrane aeration sewage treatment system.

Background

The Membrane Aeration Bioreactor (MABR) is a bubble-free aeration technology, compared with the traditional biochemical process, the MABR has superior oxygen transfer performance and synchronous nitrification and denitrification advantages, and can improve the effluent quality, effectively reduce the energy consumption and save the carbon source in the wastewater treatment process. However, the MABR technology belongs to a novel biological treatment technology, the research direction mainly comprises the development of membrane materials and membrane components, the development of membrane processes, the development of membrane equipment and the like, and test equipment required in the research and development process often has the problems of simple equipment, large floor area, large water demand for tests and the like.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention provides a membrane aeration sewage treatment system, which can utilize a reactor to carry out a simple biomembrane test and a membrane aeration bioreactor test and also can carry out a fixed biomembrane-activated sludge process test, can effectively adjust the treatment process and the treatment capacity of wastewater and the retention time of each reaction process in the wastewater treatment process, greatly reduces the occupied area and the water quantity required by the test, and simplifies the test preparation process.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows: the utility model provides a membrane aeration sewage treatment system, includes reactor, inlet channel, outlet conduit, gas supply line, aeration systems and row's mud system, the inlet channel is connected with the water inlet of reactor, the outlet conduit is connected with the delivery port of reactor, the inside MABR membrane module that is equipped with of reactor, aeration systems sets up in MABR membrane module below, the gas supply line is connected with MABR membrane module and aeration systems respectively, it sets up the bottom at the reactor to arrange the mud system, the delivery port has a plurality ofly, and a plurality of delivery ports are arranged in proper order along the radial of reactor.

Optionally, still include the stirring subassembly, the stirring subassembly includes driving piece, telescopic puddler and telescopic stirring leaf, the driving piece is connected to puddler one end, and the puddler other end is equipped with the stirring leaf, and the one end that the puddler was equipped with the stirring leaf passes the MABR membrane module and sets up in aeration systems's top.

Optionally, the aeration system includes an aeration disc and a plurality of perforated aeration pipes, the aeration disc and the perforated aeration pipes are respectively connected with the air supply pipe, the perforated aeration pipes are located below the MABR membrane module, and the aeration disc is located below the perforated aeration pipes.

Optionally, the distance between the perforated aeration pipe and the aeration disc is 2-10 cm.

Optionally, the sludge discharge system comprises a sludge hopper and a sludge discharge pipeline connected with the sludge hopper, and the sludge hopper is arranged at the bottom of the reactor.

Optionally, the distance between the sludge hopper and the aeration disc is 2-10 cm.

Optionally, the MABR membrane module is adjustably mounted on the inner wall of the reactor, and the MABR membrane module is of a detachable structure.

Optionally, the reactor is provided with an overflow port, the overflow port is connected with an overflow pipeline, the height of the overflow port on the reactor is less than or equal to the height of the water inlet on the reactor, and the diameter of the overflow port is greater than or equal to the diameter of the water inlet.

Optionally, the gas supply pipeline is provided with a gas supply valve, a gas flowmeter and a gas pressure gauge.

Optionally, a sludge discharge valve and a sludge discharge flowmeter are arranged on the sludge discharge pipeline.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) the membrane aeration sewage treatment system provided by the embodiment of the application has high integration degree of the reactor, and can be used for carrying out a simple biofilm test by using the reactor and also can be used for carrying out an IFAS (fixed biofilm-activated sludge process) test by using the reactor and an activated sludge system.

(2) The membrane aeration sewage treatment system that this application embodiment provided, the design of different delivery ports on the reactor, every outlet conduit all is equipped with outlet valve and play water flowmeter, can effectively adjust the handling capacity of waste water and the dwell time of waste water treatment process, very big reduction area and the experimental required water yield, simplified experimental preparation process, can also study the treatment effect of MABR different positions.

(3) The membrane aeration sewage treatment system that this application embodiment provided, aeration disc provides oxygen to reaction liquid, and the perforation aeration pipe erodees the MABR membrane module, reaches the effect of control biofilm thickness.

Drawings

FIG. 1 is a schematic structural view of a membrane aeration wastewater treatment system according to an embodiment of the present invention.

The labels in the various figures are: 1. a reactor; 11. a water inlet; 12. a water outlet; 13. a diaphragm assembly; 14. an overflow port; 15. an overflow conduit; 2. a water inlet pipe; 3. a water outlet pipeline; 31. a water outlet valve; 32. a water outlet flow meter; 4. a gas supply duct; 41. an air supply valve; 42. a gas flow meter; 43. a gas pressure gauge; 5. an aeration system; 51. an aeration disc; 52. perforating an aeration pipe; 6. a sludge discharge system; 61. a sludge hopper; 62. a sludge discharge pipeline; 621. a mud valve; 622. a sludge discharge flowmeter; 7. a stirring assembly; 71. a drive member; 72. a stirring rod; 73. stirring blades; 8. a base.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

With reference to fig. 1, the membrane aeration sewage treatment system of this embodiment, its characterized in that includes reactor 1, inlet channel 2, outlet conduit 3, gas supply line 4, aeration systems 5 and row's mud system 6, inlet channel 2 is connected with reactor 1's water inlet 11, outlet conduit 3 is connected with reactor 1's delivery port 12, reactor 1 is inside to be equipped with MABR membrane module 13, aeration systems 5 sets up in MABR membrane module 13 below, gas supply line 4 is connected with MABR 13 and aeration systems 5 respectively, row's mud system 6 sets up in reactor 1's bottom, delivery port 12 has a plurality ofly, and a plurality of delivery ports 12 are arranged in proper order along reactor 1's radial. The reactor 1 has high integration degree, and can be used for carrying out a simple biofilm test by utilizing the reactor 1, and also can be used for carrying out an Integrated filtered Activated Sludge Technology (IFAS) Fixed biofilm-Activated Sludge process test by utilizing the reactor 1 and a Sludge discharge system 6; the water outlet 12 is arranged at the opposite side of the water inlet 11, the water outlet 12 is located at the same radial position of the reactor 1, the positions of 1/4, 1/3, 1/2 and 3/4 of the effective volume of the reactor 1 are arranged from top to bottom, each water outlet pipeline 3 is provided with a water outlet valve 31 and a water outlet flow meter 32, the design of different water outlets 12 on the reactor 1 can effectively adjust the treatment capacity of wastewater and the retention time of the wastewater treatment process, the floor area and the water quantity required by the test are greatly reduced, the test preparation process is simplified, and the treatment effects of different positions of MABR can be researched. The MABR membrane module 13 may also be used as a separate aeration structure. The base 8 of taking the pulley can be installed to 1 bottom of reactor, is convenient for remove, reactor 1 is square or circular structure, and when reactor 1 was square structure, the sludge fill 61 of 1 bottom of reactor was the chamfered table structure, and the upper and lower bottom of the chamfered table is square, can be with the fine combination of square reactivity, and when reactor 1 was circular structure, the sludge fill 61 of 1 bottom of reactor was circular structure.

Example 2

With reference to fig. 1, compared with the technical solution of embodiment 1, the membrane aeration sewage treatment system of the present embodiment can be improved as follows: the aeration device further comprises a stirring assembly 7, wherein the stirring assembly 7 comprises a driving piece 71, a telescopic stirring rod 72 and a telescopic stirring blade 73, one end of the stirring rod 72 is connected with the driving piece 71, the other end of the stirring rod 72 is provided with the stirring blade 73, and one end of the stirring rod 72, which is provided with the stirring blade 73, penetrates through the MABR membrane assembly 13 and is arranged above the perforated aeration pipe 52. The stirring assembly 7 makes the gas and the liquid fully contacted, wherein the length of the stirring rod 72 can be adjusted, and the stirring blade 73 can be retracted.

Example 3

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with the technical solutions of embodiments 1 or 2: the aeration system 5 comprises an aeration disc 51 and a plurality of perforated aeration pipes 52, the aeration disc 51 and the perforated aeration pipes 52 are respectively connected with an air supply pipe, the perforated aeration pipes 52 are positioned below the MABR membrane module 13, and the aeration disc 51 is positioned below the perforated aeration pipes 52. The aeration disc 51 supplies oxygen to the reaction liquid, and the perforated aeration pipe 52 flushes the MABR membrane module 13, so that the effect of preventing the flow passage of the MABR membrane module from being blocked is achieved. Aeration disc 51 is also called as the piece dish formula micropore aerator, produces the microbubble, has characteristics such as gas, liquid contact surface are big, the oxygen utilization ratio is high, and perforation aeration pipe 52 belongs to mesopore aerator, simple structure, and aeration resistance is little, can carry out effectual washing to MABR membrane module 13, reaches the effect that prevents MABR membrane module rivers passageway from blockking up.

Example 4

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 3: the distance between the perforated aeration pipe 52 and the aeration disc 51 is 2-10 cm. The air bubbles in the perforated aeration pipe 52 have a large influence on the scrubbing effect, if the distance between the perforated aeration pipe 52 and the aeration disc 51 is less than 2cm, the output of the air bubbles in the perforated aeration pipe 52 is influenced, and if the distance between the perforated aeration pipe 52 and the aeration disc 51 is more than 10cm, the production cost of the reactor 1 is increased, the perforated aeration pipe 52 is detachably installed inside the reactor 1, so that the position of the perforated aeration pipe 52 can be adjusted on the reactor 1.

Example 5

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 4: the sludge discharge system 6 comprises a sludge hopper 61 and a sludge discharge pipeline 62 connected with the sludge hopper 61, and the sludge hopper 61 is arranged at the bottom of the reactor 1.

Example 6

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 5: the distance between the sludge hopper 61 and the aeration disc 51 is 2-10 cm. The specific distance between the sludge bucket 61 and the aeration tray 51 is determined according to the height of the reactor 1, and if the distance between the sludge bucket 61 and the aeration tray 51 is less than 2cm, difficulty in sludge sedimentation is caused, and if the distance between the sludge bucket 61 and the aeration tray 51 is more than 10cm, the production cost of the reactor 1 is increased.

Example 7

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 6: the MABR membrane module 13 is adjustably mounted on the inner wall of the reactor 1, and the MABR membrane module 13 is of a detachable structure. The MABR membrane component 13 is a hydrophobic gas separation membrane which can be a compact membrane, a composite membrane or a microporous membrane, and the position of the MABR membrane component 13 in the reactor 1 can be adjusted, so that the height from the top end of the MABR membrane component 13 to the water surface is not less than 5 cm. And the MABR membrane module 13 itself is also of a detachable structure. The position of perforated aeration tube 52 is also correspondingly adjustable.

Example 8

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 7: the reactor 1 is provided with an overflow port 14, the overflow port 14 is connected with an overflow pipeline 15, the height of the overflow port 14 on the reactor 1 is less than or equal to the height of the water inlet 11 on the reactor 1, and the diameter of the overflow port 14 is greater than or equal to the diameter of the water inlet 11. The overflow 14 prevents the water inlet 11 from being filled too much to overflow the reactor 1.

Example 9

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 8: the gas supply pipeline 4 is provided with a gas supply valve 41, a gas flowmeter 42 and a gas pressure gauge 43.

Example 10

With reference to fig. 1, the membrane aeration wastewater treatment system of the present embodiment can be improved as follows compared with any of the technical solutions of embodiments 1 to 9: and a sludge discharge valve 621 and a sludge discharge flowmeter 622 are arranged on the sludge discharge pipeline. The sludge discharge valve 621 can control the opening and closing of the sludge discharge according to the sludge amount display of the sludge discharge flowmeter 622.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides a membrane aeration sewage treatment system, its characterized in that, includes reactor, inlet channel, outlet conduit, gas supply line, aeration systems and row's mud system, the inlet channel is connected with the water inlet of reactor, the outlet conduit is connected with the delivery port of reactor, the inside MABR membrane module that is equipped with of reactor, aeration systems sets up in MABR membrane module below, the gas supply line is connected with MABR membrane module and aeration systems respectively, it sets up the bottom at the reactor to arrange the mud system, the delivery port has a plurality ofly, and a plurality of delivery ports are arranged in proper order along the radial of reactor.

2. The membrane aeration sewage treatment system according to claim 1, further comprising a stirring assembly, wherein the stirring assembly comprises a driving member, a telescopic stirring rod and a telescopic stirring blade, one end of the stirring rod is connected with the driving member, the other end of the stirring rod is provided with the stirring blade, and the end of the stirring rod provided with the stirring blade penetrates through the MABR membrane assembly and is arranged above the aeration system.

3. The membrane aerated wastewater treatment system of claim 1, wherein the aeration system comprises an aeration disc and a plurality of perforated aeration pipes, the aeration disc and the perforated aeration pipes are respectively connected with an air supply pipe, the perforated aeration pipes are positioned below the MABR membrane module, and the aeration disc is positioned below the perforated aeration pipes.

4. The membrane aeration sewage treatment system of claim 3, wherein the distance between the perforated aeration pipe and the aeration disc is 2-10 cm.

5. The membrane aerated wastewater treatment system of claim 1, wherein the sludge discharge system comprises a sludge hopper and a sludge discharge pipeline connected with the sludge hopper, and the sludge hopper is arranged at the bottom of the reactor.

6. The membrane aeration sewage treatment system according to claim 5, wherein the distance between the sludge hopper and the aeration disc is 2-10 cm.

7. The membrane-aerated wastewater treatment system of claim 1, wherein the MABR membrane module is adjustably mounted on the inner wall of the reactor and is of a detachable construction.

8. The membrane aeration wastewater treatment system according to claim 1, wherein the reactor is provided with an overflow port, the overflow port is connected with an overflow pipeline, the height of the overflow port on the reactor is less than or equal to the height of the water inlet on the reactor, and the diameter of the overflow port is greater than or equal to the diameter of the water inlet.

9. The membrane aeration sewage treatment system according to claim 1, wherein a gas supply valve, a gas flow meter and a gas pressure gauge are provided on the gas supply pipeline.

10. A membrane aeration wastewater treatment system according to claim 5, wherein a sludge discharge valve and a sludge discharge flowmeter are provided on the sludge discharge pipeline.