CN203613065U - Technical device for preventing built-in type membrane of membrane bio-reactor (MBR) from being blocked - Google Patents
Technical device for preventing built-in type membrane of membrane bio-reactor (MBR) from being blocked Download PDFInfo
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- CN203613065U CN203613065U CN201320416027.XU CN201320416027U CN203613065U CN 203613065 U CN203613065 U CN 203613065U CN 201320416027 U CN201320416027 U CN 201320416027U CN 203613065 U CN203613065 U CN 203613065U
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Abstract
The utility model relates to the field of landfill leachate treatment, and provides a technical device for preventing a built-in type membrane of a membrane bio-reactor (MBR) from being blocked. The technical device comprises a denitrification tank, a nitration tank, a built-in component and a vertical sedimentation basin, wherein the liquid at the upper part of a nitration pool in the nitration tank flows into the sedimentation basin through the upper end of the sedimentation basin; the built-in component is arranged at the middle upper part of the sedimentation basin. A sludge return pump is also arranged under the sedimentation basin, so that the sludge in the middle of the sedimentation basin returns to the outside of the sedimentation basin according to the running condition. The technical device is reasonable in design and compact in structure; after the technical device is adopted, the activated sludge in the tank is held back, the load of the back built-in type membrane is low, and the built-in type membrane of the MBR is prevented from being blocked; the technical device is high in membrane flux, large in water yield and good in water quality.
Description
Technical field
The utility model relates to the percolate process field of urban refuse sanitary landfill, garbage incinerating power plant, garbage transfer station etc., is specifically related to a kind of process unit that prevents that built-in MBR film from stopping up.
Background technology
Percolate is that a kind of Pollutant levels are high, a kind of waste water that water quality is very complicated.According to the requirement of national environmental protection portion, water outlet reaches the emission standard of GB16889-2008 at present, according to national related specifications, and the general treatment process that adopts " pre-treatment+MBR membrane bio-reaction system+advanced treatment ".
MBR technique refers to, film-bioreactor (Membrane Bio-Reactor, MBR) is the Novel state Waste Water Treatment of membrane separation technique and biologic treating technique combination.Replace traditional biological treatment technology end second pond with membrane module, in bio-reactor, keep high reactivity sludge concentration, improve biological treatment organic loading, thereby reduce sewage treatment facility floor space, and by keeping low sludge loading to reduce surplus sludge volume.
MBR technique is divided into two kinds of built-in MBR and built-in MBR, the employing having in garbage leachate treatment process at present be built-in MBR system.
Built-in MBR is made up of denitrification tank, nitrating pot and built-in MBR membrane module three parts exactly.But in the process of operation, pollution has occurred film, pressure raises; aquifer yield reduces; at this time need to clean film, general frequency of cleaning is higher, all needs possible every day to clean; or within 3 days, just need medicament soaking and washing; although general flux also can recover after cleaning, matting is responsible for, and cleaning agent expense is higher; and clean whole system and will shut down, caused whole percolate treatment station normally not run.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of process unit that prevents that built-in MBR film from stopping up, and prevents the obstruction of built-in membrane, improves the water production rate of film.
For solving the problems of the technologies described above, the utility model provides a kind of process unit that prevents that built-in MBR film from stopping up, comprise denitrification tank, nitrating pot and built-in membrane assembly, it is characterized in that, also comprise vertical sedimentation basin, the liquid on the nitrification tank top in nitrating pot flows in settling tank by the upper end of settling tank, and the middle and upper part water outlet of settling tank enters built-in membrane assembly.
Preferably, settling tank bottom is communicated with nitrification tank, and like this, the mud in settling tank can flow in nitrification tank, is unlikely and becomes dead mud.
Further optimize, in order to prevent that the mud of settling tank from becoming dead mud, the bottom of described settling tank is communicated with described denitrification tank by return line, and described return line is provided with sludge reflux pump.
Be more preferably, on described return line, be provided with variable valve, according to the running condition of settling tank, open variable valve and reflux pump, mud is back to denitrification tank.
Most preferred, described settling tank is the open straight-tube shape device of a upper and lower ends, and described straight-tube shape device is vertically positioned at nitrating pot.
The middle and upper part of described settling tank is provided with V-notch weir, and the middle and upper part water outlet of settling tank enters built-in membrane assembly after collecting by described V-notch weir.
Garbage leachate treatment device of the present utility model is reliable, and integrated level is high, has effectively held back active sludge, has prevented the obstruction of built-in membrane, makes again the load reduction of membrane module, has improved the producing water ratio of film.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
Fig. 1 is embodiment structural front view of the present utility model.
Fig. 2 is the vertical view that in embodiment structure of the present utility model, nitrating pot is connected with membrane module.
Embodiment
Shown in Fig. 1,2, first water inlet enters in denitrification tank 10, and the top water outlet of denitrification tank 10 enters nitrating pot 20, and denitrification tank 10 is communicated with by return line with the bottom of nitrating pot 20, and return line is provided with reflux pump 5 and variable valve 6.The aeration tube that is provided with gas blower 4 leads to the bottom of the interior nitrification tank 1 of nitrating pot 20.The interior vertical-flow settling tank 2 that is provided with of nitrating pot 20, settling tank 2 is the open straight cylinder 3 of a upper and lower ends, in straight cylinder 3, be provided with central draft tube 9, the liquid on nitrification tank 1 top flows in settling tank 2 by the upper end of straight cylinder 3, the middle and upper part water outlet of settling tank 2 enters built-in membrane assembly 30 after collecting by V-notch weir 8, and built-in membrane assembly 30 is by vacuum primingpump 10 water outlets.The bottom of settling tank 2 is communicated with nitrification tank 1, and like this, the mud in settling tank 2 can flow in nitrification tank 1, is unlikely and becomes dead mud.In addition, in order to prevent that the mud of settling tank from becoming dead mud, be provided with separately variable valve 7, according to the running condition of settling tank 2, open variable valve 7 and reflux pump 5, mud is back to front end denitrification tank 20.
By settling tank 2, the active sludge in nitrating pot is tentatively collected, to reduce the load that enters film, also allowed a part of mud enter film system simultaneously.Through practice operation testing identity, garbage leachate treatment device of the present utility model is reliable, and integrated level is high, has effectively held back active sludge, has prevented the obstruction of built-in membrane, makes again the load reduction of membrane module, has improved the producing water ratio of film.
Certainly, those skilled in the art will find apparent that settling tank 2 nonessential being located in nitrating pot 20.Settling tank 2 is separately set in outside nitrating pot 20, is communicated with up and down with nitrating pot 20, can reach the technique effect same with above-mentioned embodiment, therefore repeat no more.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (6)
1. a process unit that prevents that built-in MBR film from stopping up, comprise denitrification tank, nitrating pot and built-in assembly, it is characterized in that, also comprise vertical sedimentation basin, the liquid on the nitrification tank top in described nitrating pot flows in settling tank by the upper end of described settling tank, and the middle and upper part water outlet of described settling tank enters described built-in assembly.
2. the process unit that prevents that built-in MBR film from stopping up according to claim 1, is characterized in that, described settling tank bottom is communicated with described nitrification tank.
3. the process unit that prevents that built-in MBR film from stopping up according to claim 1 and 2, is characterized in that, the bottom of described settling tank is communicated with described denitrification tank by return line, and described return line is provided with sludge reflux pump.
4. the process unit that prevents that built-in MBR film from stopping up according to claim 3, is characterized in that, on described return line, is provided with variable valve.
5. the process unit that prevents that built-in MBR film from stopping up according to claim 1, is characterized in that, it is characterized in that, described settling tank is the open straight-tube shape device of a upper and lower ends, and described straight-tube shape device is vertically positioned at nitrating pot.
6. prevent according to claim 1 or 5 the process unit that built-in MBR film stops up, the middle and upper part of described settling tank is provided with V-notch weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416027.XU CN203613065U (en) | 2013-07-12 | 2013-07-12 | Technical device for preventing built-in type membrane of membrane bio-reactor (MBR) from being blocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416027.XU CN203613065U (en) | 2013-07-12 | 2013-07-12 | Technical device for preventing built-in type membrane of membrane bio-reactor (MBR) from being blocked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203613065U true CN203613065U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416027.XU Expired - Lifetime CN203613065U (en) | 2013-07-12 | 2013-07-12 | Technical device for preventing built-in type membrane of membrane bio-reactor (MBR) from being blocked |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743656A (en) * | 2015-04-14 | 2015-07-01 | 江南大学 | Vertical tubular MBR for treating high-sanity high-sludge concentration wastewater |
-
2013
- 2013-07-12 CN CN201320416027.XU patent/CN203613065U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743656A (en) * | 2015-04-14 | 2015-07-01 | 江南大学 | Vertical tubular MBR for treating high-sanity high-sludge concentration wastewater |
| CN104743656B (en) * | 2015-04-14 | 2016-11-23 | 江南大学 | A kind of vertical-type tubular type MBR for processing high saliferous high sludge concentration waste water |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |