CN219885812U - Complete mixing type MBBR reactor - Google Patents
Complete mixing type MBBR reactor Download PDFInfo
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- CN219885812U CN219885812U CN202320421882.3U CN202320421882U CN219885812U CN 219885812 U CN219885812 U CN 219885812U CN 202320421882 U CN202320421882 U CN 202320421882U CN 219885812 U CN219885812 U CN 219885812U
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- Prior art keywords
- reactor
- screen
- water outlet
- mbbr
- reactor body
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- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 title claims abstract 13
- 238000002156 mixing Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000000945 filler Substances 0.000 claims abstract description 49
- 238000005192 partition Methods 0.000 claims abstract description 31
- 238000005276 aerator Methods 0.000 claims abstract description 13
- 238000005243 fluidization Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 239000010865 sewage Substances 0.000 claims description 40
- 244000005700 microbiome Species 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 244000088401 Pyrus pyrifolia Species 0.000 description 1
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 208000014451 palmoplantar keratoderma and congenital alopecia 2 Diseases 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model discloses a complete mixing type MBBR reactor, which comprises a reactor body, a filler, a screen and a flow pushing device, wherein two ends of the body are respectively provided with a water inlet pipeline and a water outlet pipeline; a plurality of baffles are arranged in the reactor body; the baffle plates cover the upper part or the lower part of the section of the reactor on the vertical height of the reactor, and the shielding heights of the adjacent baffle plates are different from each other; the vertical height of the water inlet pipeline is positioned in the shielding height range of the partition board close to the water inlet pipeline; the vertical height of the water outlet pipeline is positioned in the shielding height range of the partition board close to the water outlet pipeline; the filler is filled in the reactor body; the screen is arranged close to the water outlet pipeline and is used for filtering and intercepting fillers in the water outlet; the impeller is positioned at the partition plate near the water outlet pipe for applying a thrust force for flowing the water flow toward the water inlet pipe. The reactor structure of the utility model is beneficial to fluidization of MBBR filler, and simultaneously, the inclined screen and the perforated aerator pipe arranged at the bottom can avoid the filler from blocking the screen.
Description
Technical Field
The utility model relates to a complete mixing type MBBR reactor, and belongs to the technical field of sewage treatment.
Background
Along with the continuous upgrading of domestic sewage discharge standards, the requirements of sewage treatment industries on the denitrification and dephosphorization performances of sewage treatment biochemical systems are continuously improved. In order to improve the sewage treatment volume load rate, biological denitrification and dephosphorization are fully utilized to reduce the treatment cost, and sewage biological treatment processes such as a circulating biological tank (CASS), a moving bed biological membrane tank (MBBR), a membrane biological tank (MBR) and the like are sequentially developed on the basis of the traditional activated sludge and biological membrane processes.
The MBBR moving bed biomembrane reactor is a novel biomembrane reactor which is applied more recently, and the technology and the improvement technology of the MBBR moving bed biomembrane reactor are all to increase the microorganism growth space and increase the microorganism concentration in a pond by adding a suspended biomembrane carrier in an activated sludge biochemical system, thereby improving the biochemical capacity, and achieving the purposes of increasing the impact load of the system, reducing the pond capacity, saving the occupied area and the like.
The current commonly used MBBR filler comprises HDPE filler, polyurethane filler, suspension ball filler and the like, and in order to increase the treatment effect of the MBBR filler, an MBBR filler tank is generally stirred or aerated to enable the MBBR filler to be fully contacted with sewage. In actual engineering, due to the structural problem of a reactor, the MBBR filler has poor fluidization effect, cannot fully contact sewage, and can block a pipeline or cause damage of electromechanical equipment such as a subsequent water pump due to water loss of the MBBR filler. At present, most of the screens commonly used in the MBBR process are simple and straight porous screens, filler often accumulates on the screens, and the problem that the filler cannot be stopped or water is not smooth can occur along with the gradual accumulation of the filler, so that the operation of the whole biochemical tank is affected.
In view of the foregoing, there is a particular need for a fully hybrid MBBR reactor that addresses the shortcomings of the prior art.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the complete mixing type MBBR reactor which can promote the filler to be in a fluidization state in the reactor, avoid the filler from blocking a screen, ensure the stable operation of the MBBR process and simultaneously maintain higher effluent quality.
The technical scheme adopted by the utility model is as follows:
a fully mixed MBBR reactor comprises a reactor body, wherein two ends of the reactor body are respectively provided with a water inlet pipeline and a water outlet pipeline;
a plurality of baffles are arranged in the reactor body; the baffle plates cover the upper part or the lower part of the section of the reactor on the vertical height of the reactor, and the shielding heights of the adjacent baffle plates are different from each other;
the vertical height of the water inlet pipeline is positioned in the shielding height range of the partition board close to the water inlet pipeline;
the vertical height of the water outlet pipeline is positioned in the shielding height range of the partition board close to the water outlet pipeline;
further comprises:
a filler located inside the reactor body;
the screen is close to the water outlet pipeline and is used for filtering and intercepting fillers in water outlet;
and the impeller is positioned at the partition plate close to the water outlet pipeline and is used for applying thrust for enabling water flow to flow towards the water inlet pipeline.
Preferably, the number of the separators is 3 to 10.
Preferably, two baffles positioned at the inner end of the reactor body are arranged at the inner upper part of the reactor body, and a water inlet pipeline and a water outlet pipeline are correspondingly arranged on the outer upper end wall of the reactor body.
Preferably, the screen cloth install in the baffle below that is close to outlet conduit, the top and the baffle bottom of screen cloth link to each other, the bottom slope of screen cloth sets up towards the reactor body one side that keeps away from outlet conduit to link to each other with the bottom of reactor body.
Preferably, the inclination angle of the screen is 30-60 degrees.
Preferably, the reactor further comprises an aerator at the inner bottom of the reactor body at the side of the screen remote from the outlet water pipe for providing dissolved oxygen to microorganisms in the reactor body.
Preferably, the reactor further comprises a perforated aerator pipe located in the reactor body below the screen for promoting filler fluidization in the body of water and flushing the screen to prevent clogging of the screen.
Preferably, the aerator and the perforated aerator pipe are connected with an external fan through a pipeline, and air is supplied through the external fan.
Preferably, the inclination angle of the screen is 45 degrees.
Preferably, the impeller is disposed obliquely above the screen, and the sewage suction end of the impeller is disposed toward the screen.
The utility model has the beneficial effects that:
1. three baffles are arranged to divide the reactor into four areas, and after sewage flows in, the reactor is in an S-shaped flow state to promote the filler to fluidize in the reaction area;
2. the screen is arranged below the third partition board and forms a certain inclination angle with the bottom, so that the filler can be prevented from losing with water;
3. a perforated aeration pipeline is arranged below the screen, so that aeration bubbles are larger, filler fluidization can be promoted, the screen can be washed by air flow, and the screen is prevented from being blocked;
4. a flow impeller with the action direction opposite to the water flow direction is arranged in the second reaction area, so that the fluidization of the filler can be promoted, the filler is enabled to be in contact with sewage fully, and the treatment effect can be improved; the filter screen has a certain suction effect on the filler accumulated on the screen in the sewage suction process, so that the filler is reduced in accumulation.
Drawings
FIG. 1 is a schematic diagram of a fully mixed MBBR reactor;
the main reference numerals in the figures have the following meanings:
1. the reactor comprises a reactor body, 2, a water inlet pipeline, 3, a water outlet pipeline, 4, a partition board, 5, a filler, 6, an aerator, 7, a fan, 8, a flow impeller, 9, a screen, 10 and a perforated aerator pipe.
Detailed Description
The utility model is described in detail below with reference to the drawings and examples.
Example 1
A fully mixed type MBBR reactor is shown in figure 1, and comprises a reactor body 1, wherein three partition plates 4 are vertically and alternately arranged in the reactor body 1, and the reactor body 1 is divided into four areas of a water inlet area, a first reaction area, a second reaction area and a water outlet area which are sequentially communicated through the three partition plates 4; the partition plates 4 positioned at two sides and the bottom of the reactor body 1 are provided with water channels, and the partition plates 4 positioned in the middle and the top of the reactor body 1 are provided with water channels; a water inlet pipeline 2 communicated with the water inlet area and a water outlet pipeline 3 communicated with the water outlet area are correspondingly arranged above the two sides of the reactor body 1.
As shown in fig. 1, sewage enters a water inlet area formed by a leftmost partition plate 4 and a pool wall where the water inlet pipe 2 is positioned through a water inlet pipe 2, and a first water passing channel is reserved below the leftmost partition plate 4; the sewage enters a first reaction zone formed by a leftmost partition board 4, an intermediate partition board 4 and a pool wall from a first water passing channel, and a second water passing channel is reserved above the intermediate partition board 4; the sewage enters a second reaction zone formed by a middle partition plate 4, a rightmost partition plate 4 and a pool wall from a second water passing channel; a third water passing channel is reserved below the rightmost partition board 4; the sewage enters a water outlet area formed by the rightmost partition plate 4 and the tank wall from the third water passing channel and is discharged from the water outlet pipeline 3; the reactor body 1 is divided into four areas by three partition boards 4, and after sewage flows in, the reactor body 1 is in an S-shaped flow state so as to promote the filler 5 to fluidize in the reaction area.
The first reaction area and the second reaction area are filled with the fillers 5, the outside and the inside of each filler 5 are respectively provided with different biological species, anaerobic bacteria or facultative bacteria grow in the inside, and good bacteria grow in the outside, so that each filler 5 can be used as a micro-reactor to enable the nitrification reaction and the denitrification reaction to exist at the same time, thereby improving the treatment effect; a plurality of aerators 6 are arranged at the bottoms of the first reaction zone and the second reaction zone, and the aerators 6 are connected with a fan 7 through a gas pipeline to provide dissolved oxygen for microorganisms in the reaction zones. In order to prevent the MBBR packing 5 from running off along with sewage, a screen 9 for preventing the packing 5 from running off is also arranged at the third water passing channel, one side of the screen 9 is connected with the right-most partition plate 4, and the other side is connected with the bottom of the second reaction zone and forms an angle of 30-60 degrees, preferably 45 degrees with the bottom of the tank; the sewage can enter the water outlet area after passing through the screen mesh 9, so that the filler 5 can be prevented from running off along with water.
The submersible type impeller 8 is erected on the inner side of the partition wall close to the water outlet pipeline through the support rod, the suction direction of the impeller 8 faces the screen 9, and then acting force opposite to the water flow direction can be generated, so that fluidization of the filler 5 is further promoted, the filler 5 is fully contacted with sewage, and the sewage treatment effect is improved.
Meanwhile, a perforated aerator pipe 10 is also arranged in the area below the screen 9; the perforated aeration pipe 10 is connected with the fan 7 through a gas pipeline, bubbles exposed through the perforated aeration pipe 10 are large, the function of promoting fluidization of the filler 5 can be achieved, and on the other hand, the screen 9 can be flushed through air flow to prevent the screen 9 from being blocked.
The sewage treatment steps are as follows:
1. sewage enters a water inlet area through a water inlet pipeline;
2. the sewage in the water inlet zone flows to a first reaction zone through a first water channel, and ammonia nitrogen in the sewage is removed in the first reaction zone through microorganisms attached to the filler; wherein the residence time of the sewage in the first reaction zone is 3.5h;
3. the sewage treated in the first reaction zone flows into the second reaction zone through the second water passage, ammonia nitrogen in the sewage is further removed in the second reaction zone through microorganisms attached to the filler, and water flow is pushed to flow in the opposite direction through the impeller, so that fluidization of the filler is promoted; wherein the residence time of the sewage in the second reaction zone is 2h;
4. the treated water body enters the water outlet area after passing through the screen mesh and overflows out of the reactor body through the water outlet pipeline; wherein, the inclination angle of the screen is 45 degrees.
Wherein the filling rate of the MBBR in the reactor body is 30-40%, and the biomass is 60-70mgVSS/g. In the steps 2 and 3, oxygen is supplied to the reaction zone by intermittent aeration.
Comparative example 1
The difference from example 1 is that no intermediate partition is provided in the MBBR reactor of comparative example 1, i.e. only one reaction zone is present in the reactor body 1.
Comparative example 2
The difference from example 1 is that in the MBBR reactor of comparative example 2, the direction of suction and plug flow of the plug flow device 8 is horizontal.
The tested water is town domestic sewage. The analysis method of the main pollutants of the inlet water and the outlet water during the test is shown in table 1, the concentration is shown in table 2, and the pollutant removal rate is shown in table 3.
TABLE 1
| Detecting items | Test method |
| COD | Potassium dichromate process |
| BOD 5 | Dilution inoculation method |
| TN | Potassium persulfate oxidation-ultraviolet spectrophotometry |
| Ammonia nitrogen | Nashi reagent colorimetric method |
| TP | Potassium persulfate oxidation-stannous chloride reduction photometry |
Table 2 units: mg/L
Table 3 units: % of (B)
From the above results, the treatment effect of example 1 on sewage was more excellent, which is because: 1. the existence of the middle partition plate can enable sewage to be in an S-shaped flow state in the reactor, promote the fluidization of the filler in the reaction zone, increase the residence time of the sewage, enable the MBBR filler to be in full contact with the sewage, and further improve the sewage treatment effect; 2. the direction of the sewage sucked by the impeller is towards the position of the screen, and the pushed sewage and the filler are inclined upwards, so that the impeller can have a certain suction effect on the filler accumulated on the screen in the sewage sucking process, the filler is reduced to be accumulated, and the sewage treatment effect is improved.
The foregoing is merely illustrative of the preferred embodiments of this utility model, and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of this utility model, and such variations and modifications are to be regarded as being within the scope of this utility model.
Claims (10)
1. A fully mixed MBBR reactor is characterized by comprising a reactor body, wherein two ends of the reactor body are respectively provided with a water inlet pipeline and a water outlet pipeline;
a plurality of baffles are arranged in the reactor body; the baffle plates cover the upper part or the lower part of the section of the reactor on the vertical height of the reactor, and the shielding heights of the adjacent baffle plates are different from each other;
the vertical height of the water inlet pipeline is positioned in the shielding height range of the partition board close to the water inlet pipeline;
the vertical height of the water outlet pipeline is positioned in the shielding height range of the partition board close to the water outlet pipeline;
further comprises:
a filler located inside the reactor body;
the screen is close to the water outlet pipeline and is used for filtering and intercepting fillers in water outlet;
and the impeller is positioned at the partition plate close to the water outlet pipeline and is used for applying thrust for enabling water flow to flow towards the water inlet pipeline.
2. The fully mixed MBBR reactor according to claim 1, wherein the number of baffles is 3-10.
3. A fully mixed MBBR reactor according to claim 1 or 2, wherein two baffles at the inner end of the reactor body are both arranged above the inside of the reactor body, and the water inlet and outlet conduits are also correspondingly arranged on the outer upper end wall of the reactor body.
4. A completely mixed MBBR reactor according to claim 3, wherein the screen is installed below the partition board near the water outlet pipe, the top end of the screen is connected to the bottom end of the partition board, and the bottom end of the screen is inclined toward the side of the reactor body far from the water outlet pipe and is connected to the bottom end of the reactor body.
5. The fully mixed MBBR reactor according to claim 4, wherein the inclination of the screen is 30 ° to 60 °.
6. The completely mixed MBBR reactor according to claim 1, further comprising an aerator at the inner bottom of the reactor body on the side of the screen remote from the outlet conduit for providing dissolved oxygen to microorganisms in the reactor body.
7. The MBBR reactor of claim 6, further comprising perforated aeration tubes located in the reactor body below the screen for promoting filler fluidization in the body of water and flushing the screen to prevent clogging of the screen.
8. The fully mixed MBBR reactor according to claim 7, wherein the aerator and the perforated aerator pipe are connected with an external fan through a pipeline, and air is supplied through the external fan.
9. A fully mixed MBBR reactor according to claim 4 or 5, wherein said screen is inclined at 45 °.
10. A fully mixed MBBR reactor according to claim 9, wherein the impeller is arranged obliquely above the screen and the sewage suction end of the impeller is arranged towards the screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320421882.3U CN219885812U (en) | 2023-03-08 | 2023-03-08 | Complete mixing type MBBR reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320421882.3U CN219885812U (en) | 2023-03-08 | 2023-03-08 | Complete mixing type MBBR reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219885812U true CN219885812U (en) | 2023-10-24 |
Family
ID=88397728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320421882.3U Active CN219885812U (en) | 2023-03-08 | 2023-03-08 | Complete mixing type MBBR reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219885812U (en) |
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2023
- 2023-03-08 CN CN202320421882.3U patent/CN219885812U/en active Active
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