MABR (Membrane Aerated Baffled Reactor) membrane biological reaction system for river overflow pollution abatement

Abstract

The utility model discloses an MABR membrane biological reaction system for river overflow pollution treatment. The MABR membrane biological reaction system comprises coastal foundation soil, a water body is arranged on one side of the coastal foundation soil, a consolidated foundation is installed at the water bottom of the water body, a plurality of telescopic rods are arranged on the top surface of the consolidated foundation, and suspension blocks are arranged on the top surfaces of the telescopic rods; the device has the beneficial effects that organic pollutants can be effectively removed, COD and ammonia nitrogen indexes in overflow sewage are reduced, black and odorous water bodies are prevented from being generated, meanwhile, the MABR integrated module is composed of multiple bundles of membrane filaments of a double-layer structure with modified hydrophobic polytetrafluoroethylene hollow fibers externally woven with nanofiber filler, and the device has the advantages of being large in tensile strength, high in compressive strength, high in water quality and the like. The MABR integrated module has the characteristics of strong acid resistance, strong alkali resistance and strong oxidizability, the service life is long, ecological plants arranged above the MABR integrated module can play a role in auxiliary treatment and a part of the landscape environment, and the ecological environment is good.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a MABR membrane bioreactor system for river overflow pollution control. Background Art

[0002] With the rapid development of industrialization and urbanization, water pollution control and water environment management have become major issues of global concern. Due to the narrow streets and alleys in some old urban areas, most of them adopt the form of interception combined sewer system. On sunny days, all sewage is collected and transported to sewage treatment plants for treatment. On rainy days, due to the limitation of the treatment scale of sewage treatment plants, some mixed sewage will overflow into the river.

[0003] Despite the dilution effect of rainwater, overflow water still contains a large part of pollutants. In order to minimize water pollution, more and more regions have begun to treat overflow water. Due to the unstable amount of overflow water, it is difficult to use biological treatment. The coagulation and sedimentation process is basically used, which only removes SS (suspended solids) and some organic matter attached to it. Most of the pollutants in the overflow pollution, including COD, NH3-N, TP, etc., are still discharged into the river, causing the river to be black and smelly.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a MABR membrane bioreactor system for river overflow pollution control to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A MABR membrane biological reactor system for river overflow pollution control includes coastal base soil, a water body is provided on one side of the coastal base soil, a reinforced foundation is installed on the bottom of the water body, a plurality of telescopic rods are provided on the top surface of the reinforced foundation, a suspended block is provided on the top surface of the telescopic rods, an outer shell is connected between the plurality of telescopic rods for upward and downward sliding, an air bag is provided inside the outer shell, a MABR integrated module is installed on the top surface of the outer shell, a receiving groove is provided on the top surface of the coastal base soil, a fan is installed inside the receiving groove, a regulating valve is installed on the fan, a first connecting pipe and a second connecting pipe are connected to the regulating valve, the first connecting pipe is connected to the MABR integrated module, and the second connecting pipe is connected to the air bag.

[0008] Preferably, a sealing cover matching with the storage groove is installed on the top surface of the storage groove, and a connecting long groove is opened on one side of the storage groove, and the first connecting tube and the second connecting tube both pass through the connecting long groove accordingly.

[0009] Preferably, the upper and lower surfaces of the shell are both provided with a plurality of elongated spacers fixedly connected thereto, and the airbag is located between the upper and lower groups of the elongated spacers.

[0010] Preferably, the telescopic rod is composed of a sleeve and a sleeve sliding rod, and the top surface of the sleeve is chamfered.

[0011] Preferably, the surface of the airbag is wrapped with scratch-resistant cloth, and the second connecting pipe is provided with an air release valve.

[0012] Preferably, the suspension block is a box structure, a plurality of air holes are provided on the top surface of the suspension block, and ecological plants are arranged on the suspension block.

[0013] The beneficial effects of the utility model are:

[0014] 1. The MABR membrane bioreactor system for river overflow pollution control in this application can effectively remove organic pollutants, reduce COD and ammonia nitrogen indicators in overflow sewage, and prevent the generation of black and smelly water bodies. At the same time, the MABR integrated module is composed of a multi-bundle membrane filament with a double-layer structure of modified hydrophobic polytetrafluoroethylene hollow fiber and outer woven nanofiber filler, which has the characteristics of high tensile strength, high compressive strength, strong acid, strong alkali and strong oxidation resistance, and long service life. The ecological plants arranged above the MABR integrated module can play an auxiliary treatment role and a part of the landscape environment, and the ecological environment is good;

[0015] 2. Membrane aeration can not only efficiently transfer oxygen to the water body, but also achieve an oxygen utilization rate of more than 60%, which is much higher than the 20% oxygen utilization rate of the microporous aeration system in the traditional biological treatment process, and has low operating energy consumption. The external woven nanofiber filler can also be used as a carrier for microbial growth and attachment, which can efficiently and stably degrade and remove organic pollutants.

[0016] 3. A telescopic rod and an air bag are set up, and in conjunction with an existing fan, gas can be delivered to the air bag, so that the outer shell can be suspended, thereby driving the MABR integrated module to move up automatically, thereby facilitating the inspection and replacement of the MABR integrated module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be 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 paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a MABR membrane bioreactor system for river overflow pollution control according to an embodiment of the utility model;

[0019] Figure 2 The invention is a MABR membrane bioreactor system for river overflow pollution control according to an embodiment of the utility model. Figure 1 A magnified view of middle;

[0020] Figure 3 The invention is a MABR membrane bioreactor system for river overflow pollution control according to an embodiment of the utility model. Figure 1 Enlarged view of middle B;

[0021] Figure 4 It is a structural schematic diagram of a MABR integrated module in a MABR membrane biological reactor system for river overflow pollution control according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Coastal base soil; 2. Water body; 3. Reinforced foundation; 4. Telescopic rod; 5. Suspension block; 6. Shell; 7. Air bag; 8. MABR integrated module; 9. Storage tank; 10. Fan; 11. Regulating valve; 12. First connecting pipe; 13. Second connecting pipe; 14. Sealing cover; 15. Connecting long groove; 16. Long spacer; 17. Air release valve. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the utility model, a MABR membrane bioreactor system for river overflow pollution control is provided.

[0026] Embodiment 1;

[0027] like Figure 1-4As shown, the MABR membrane biological reactor system for river overflow pollution control according to the embodiment of the utility model includes a coastal base soil 1, a water body 2 is arranged on one side of the coastal base soil 1, a reinforced foundation 3 is installed on the bottom of the water body 2, which is made of concrete and has high strength, a plurality of telescopic rods 4 are arranged on the top surface of the reinforced foundation 3, a suspension block 5 is arranged on the top surface of the telescopic rod 4, which plays a role of suspension, a shell 6 is connected to the multiple telescopic rods 4 by sliding up and down, an air bag 7 is arranged inside the shell 6, a MABR integrated module 8 is installed on the top surface of the shell 6, and a single MAB The R integrated module 8 is composed of multiple bundles of membrane filaments with a double-layer structure of modified hydrophobic polytetrafluoroethylene hollow fibers and outer woven nanofiber fillers. The average pore size of the membrane filaments is 0.1 microns and the porosity is not less than 70%. A receiving groove 9 is opened on the top surface of the coastal base soil 1 near the overflow water discharge inlet. A fan 10 is installed inside the receiving groove 9. A regulating valve 11 is installed on the fan 10. The regulating valve 11 is connected to a first connecting pipe 12 and a second connecting pipe 13. The first connecting pipe 12 is connected to the MABR integrated module 8, and the second connecting pipe 13 is connected to the airbag 7.

[0028] Embodiment 2:

[0029] like Figure 1-4 As shown, according to the MABR membrane biological reactor system for river overflow pollution control according to the embodiment of the utility model, a sealing cover 14 matching with the receiving tank 9 is installed on the top surface thereof, and a connecting long groove 15 is opened on one side of the receiving tank 9, and the first connecting pipe 12 and the second connecting pipe 13 both pass through the connecting long groove 15 correspondingly, so as to facilitate the penetration of the first connecting pipe 12 and the second connecting pipe 13.

[0030] Embodiment three;

[0031] like Figure 1-4 As shown, according to the MABR membrane biological reactor system for river overflow pollution control according to the embodiment of the utility model, the upper and lower surfaces of the outer shell 6 are provided with a plurality of long spacers 16 fixedly connected thereto, which play a good role in storing and limiting the airbag 7, and can ensure that the airbag 7 plays a good suspension role. The airbag 7 is located between the upper and lower groups of long spacers 16. The surface of the airbag 7 is wrapped with anti-scratch cloth made of nylon, which can play a good anti-scratch role. The second connecting pipe 13 is installed with a deflation valve 17, which has a deflation effect. The telescopic rod 4 is composed of a sleeve and a sleeve sliding rod, and the top surface of the sleeve is chamfered, which will not affect the up and down sliding of the outer shell 6.

[0032] Embodiment 4:

[0033] like Figure 1-4As shown, according to the MABR membrane biological reactor system for river overflow pollution control according to the embodiment of the utility model, the suspended block 5 is a box structure, and a plurality of air holes are opened on the top surface of the suspended block 5. Ecological plants are arranged on the suspended block 5, which can improve the sensory effect on the one hand, and further remove pollutants to the greatest extent through plants at different nutrient levels of water on the other hand.

[0034] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0035] In actual application, the MABR integrated module 8 is composed of a multi-bundle membrane filament with a double-layer structure of modified hydrophobic polytetrafluoroethylene hollow fiber and outer woven nanofiber filler. The average pore size of the membrane filament is 0.1 micron, the porosity is not less than 70%, and it is arranged near the overflow water discharge inlet. After debugging and cultivation, various microorganisms adhere to and grow on the surface of the membrane filament to form a biofilm. At the same time, the fan 10 can transport gas to the first connecting pipe 12. The gas is connected to the MABR integrated module 8 and then transmitted to the biofilm on the surface of the membrane filament through the tiny holes on the membrane filament, which can provide sufficient oxygen for the aerobic respiration of microorganisms. A large number of nano-micro bubbles are generated during the oxygen transfer process, which prolongs the residence time of oxygen in the water body 2 and improves the utilization rate of oxygen by the water body 2, thereby greatly reducing energy consumption. At the same time, the outer layer The fiber filler layer can enhance the ability of biofilm adhesion and increase the area of ​​biofilm. The biofilm has a reverse distribution of defect outside and good inside, which greatly improves the effective utilization rate of carbon source. Most aerobic heterotrophic microorganisms will be enriched on the outside of the membrane fibers. The effective carbon source in the sewage must diffuse through the anoxic biofilm on the outside of the biofilm system before it can contact it. Most of the carbon sources are first utilized by denitrification and will not be consumed too much by aerobic heterotrophic microorganisms, thereby achieving efficient denitrification. When the MABR integrated module 8 needs to be replaced or repaired, the regulating valve 11 can be adjusted at this time to connect the second connecting pipe 13 with the fan 10, and gas is delivered to the second connecting pipe 13. The gas enters the air bag 7, the air bag 7 expands, and the outer shell 6 is suspended, driving the MABR integrated module 8 to move up to the water surface.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A MABR membrane bioreactor system for river overflow pollution control, characterized in that: The invention comprises a coastal foundation soil (1), a water body (2) is provided on one side of the coastal foundation soil (1), a reinforced foundation (3) is installed at the bottom of the water body (2), a plurality of telescopic rods (4) are provided on the top surface of the reinforced foundation (3), a suspension block (5) is provided on the top surface of the telescopic rods (4), a shell (6) is slidably connected between the plurality of telescopic rods (4), an air bag (7) is provided inside the shell (6), a MABR integrated module (8) is installed on the top surface of the shell (6), a receiving groove (9) is provided on the top surface of the coastal foundation soil (1), a fan (10) is installed inside the receiving groove (9), a regulating valve (11) is installed on the fan (10), a first connecting pipe (12) and a second connecting pipe (13) are connected to the regulating valve (11), the first connecting pipe (12) is connected to the MABR integrated module (8), and the second connecting pipe (13) is connected to the air bag (7).

2. The MABR membrane bioreactor system for river overflow pollution control according to claim 1 is characterized in that: A sealing cover (14) matching the storage groove (9) is installed on the top surface thereof, and a connecting long groove (15) is provided on one side of the storage groove (9), and the first connecting tube (12) and the second connecting tube (13) both pass through the connecting long groove (15) accordingly.

3. The MABR membrane bioreactor system for river overflow pollution control according to claim 1 is characterized in that: The upper and lower surfaces of the shell (6) are both provided with a plurality of elongated spacers (16) fixedly connected thereto, and the airbag (7) is located between the upper and lower groups of the elongated spacers (16).

4. The MABR membrane bioreactor system for river overflow pollution control according to claim 1 is characterized in that: The telescopic rod (4) is composed of a sleeve and a sleeve sliding rod, and the top surface of the sleeve is provided with a chamfer.

5. The MABR membrane bioreactor system for river overflow pollution control according to claim 1 is characterized in that: The surface of the airbag (7) is wrapped with anti-scratch cloth, and the second connecting pipe (13) is equipped with an air release valve (17).

6. The MABR membrane bioreactor system for river overflow pollution control according to claim 1 is characterized in that: The suspension block (5) is a box structure, a plurality of air holes are provided on the top surface of the suspension block (5), and ecological plants are arranged on the suspension block (5).

Images