CN203999107U - A kind of MBR denitrification integrated device - Google Patents
A kind of MBR denitrification integrated device Download PDFInfo
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- CN203999107U CN203999107U CN201420403678.XU CN201420403678U CN203999107U CN 203999107 U CN203999107 U CN 203999107U CN 201420403678 U CN201420403678 U CN 201420403678U CN 203999107 U CN203999107 U CN 203999107U
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- denitrification integrated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model discloses a kind of MBR denitrification integrated device and application thereof, comprise a reactor body, at least one connection vacuum pump and manometric MBR plate film assembly, an aerating apparatus and some combined packing strings, this at least one MBR plate film assembly is located at reactor body Nei center, this aerating apparatus is arranged at the bottom in reactor body, these some combined packing strings evenly hang and are distributed in reactor body, and fill the gap between above-mentioned MBR plate film assembly and reactor body.MBR denitrification integrated device of the present utility model is in operation and can has the state of two kinds of active sludge, be attached to an active sludge on packing sheet with outer nitrated internal layer denitrification function, another kind be suspension growth mainly carry out the active sludge of synchronous nitration and denitrification.
Description
Technical field
The utility model belongs to technical field of waste water processing, is specifically related to a kind of MBR denitrification integrated device.
Background technology
Short-cut nitrification and denitrification technique is the focus of the application of bio-denitrification technology research both at home and abroad at present.Traditional denitrification process is generally multiple-stage treatment system, and its technical process is long, equipment is many, investment cost is high, floor space is large, operational management is more complicated.Development and the grasp of people to biotechnology along with neontology, denitride technology by simple technological innovation towards promote the future development of technological innovation with biological characteristics, reached efficient low-consume, occurred take that nitrosification denitrification technology and Anammox technology are the many new bio denitride technologies that indicate.Wherein, short distance nitration-denitrification technology is utilized the different growth velocitys of NOB and ammonia oxidation bacteria in same reactor, reaches denitrification effect, has obvious technical superiority.This technology has been simplified technical process, can save nearly 25% oxygen-supplying amount and 40% organic carbon source, shortens hydraulic detention time, reduce the volume of reactor, reduce excess sludge production, in nitrifying process, can reduce and produce mud 24～33%, in denitrification process, can produce less mud 50%.
Membrane bioreactor (MBR) is a kind of novel, efficient sewage disposal technology, and it can realize the separated of sludge retention time SRT and hydraulic detention time HRT, be conducive to long microorganism of enrichment generation cycle, and effluent quality is better.Synchronous nitration and denitrification technology is combined with MBR, can shortens the synchronous nitration and denitrification reaction times on the one hand, energy efficient and organic consumption, reduce sludge yield; MBR is conducive to control by environment and temperature the enrichment of ammonia oxidation bacteria on the other hand.
Be in operation, DO (dissolved oxygen) is the important factor in order that MBR realizes short-cut nitrification and denitrification.Studies have found that, in biofilm reactor, lower concentration DO has suppressed nitrated phenomenon, and DO is at 0.5～1mg/L, as water inlet NH
3when-N is 250mg/L, water outlet NH
3-N is lower than 5mg/L, and nitration product take nitrous acid as main, and nitrous rate, up to more than 90%, is moved 120d continuously, without considerable change, has shown that under low DO, biofilm system has obtained good short distance nitration effect.
At present, the research of synchronous nitration and denitrification MBR reactor is mainly contained to two large classes: a class is the in-line reactors of a plurality of reaction chambers, this class reactor is divided into anaerobic zone, aeration zone and membrane filtration district by flow deflector, by forming aerobic-anaerobic environment on space, reach denitrogenation object, the volume of this class reactor is larger, cost is high, and system operation is complicated, and energy consumption is higher; The membrane module of another kind of reactor is placed in aeration region, reaches the environment of synchronous nitration and denitrification by strict control reaction conditions, and this class reactor can be saved a large amount of spaces, reduces cost and system and moves simpler.As utility model patent CN102173510A has proposed a kind of mud with synchronous nitration and denitrification without reflux, reaction tank is divided into guiding region, aeration zone and settling region, membrane module is placed on to settling region, by the aerobic-anoxic region of arranging on aeration tube formation space, bottom, reach the object of synchronous nitration and denitrification, although this utility model has been saved power charge and the working cost of sludge reflux, energy-saving and cost-reducing, but the control difficulty of its operational conditions is larger, and reactor volume is larger.Utility model patent CN101234815A has proposed a kind of membrane bioreactor of realizing synchronous nitration denitrification denitrogenation function, this reactor is columnar structure, in reactor, there is the spherical elastic filler of membrane module and vertical hanging, by the microenvironment in reactor, regulate and control to realize synchronous nitration denitrification denitrogenation function, the floor space of this device is little, operate relatively simple, good to the removal effect of organism and ammonia nitrogen, but shortcoming is film used is hollow-fibre membrane, the problem that film pollutes has limited the sustainability of application and the operation of such device.
Utility model content
The purpose of this utility model is to overcome prior art defect, and a kind of MBR denitrification integrated device is provided.
Another object of the present utility model is to provide a kind of method of applying the processing waste water of above-mentioned MBR denitrification integrated device.
Concrete technical scheme of the present utility model is as follows:
A MBR denitrification integrated device, comprises a reactor body, at least one connection vacuum pump and manometric MBR plate film assembly, an aerating apparatus and some combined packing strings,
This at least one MBR plate film assembly is located at reactor body Nei center, this aerating apparatus is arranged at the bottom in reactor body, these some combined packing strings evenly hang and are distributed in reactor body, and fill the gap between above-mentioned MBR plate film assembly and reactor body;
Aforesaid combination type filler string comprises an axial cord and is connected on from top to bottom a plurality of described packing sheet on this axial cord; This packing sheet comprises an annulus and some hydroformylation fibrous bundles, these some hydroformylation fibrous bundle annular arrays are distributed on the ring of this annulus, the inside of this annulus is provided with the some king spokes that distribute along circle ring center's annular array, and every king spoke is provided with at least one pair of inferior spoke of this spoke symmetry relatively.
In a preferred embodiment of the present utility model, described every king spoke is provided with the inferior spoke of at least two pairs of relative these spoke symmetries, and the length that is positioned at the inferior spoke of described annulus radial outside is greater than the length of the inferior spoke that is positioned at annulus radially inner side.
In a preferred embodiment of the present utility model, the diameter of described packing sheet is 12～15cm.
In a preferred embodiment of the present utility model, described MBR plate film assembly comprise a thickness be 1～1.5mm intermediate flow channel grid, be positioned at the hydrophilic nonwoven fabrics supporting layer of intermediate flow channel both sides and be positioned at the diaphragm of hydrophilic nonwoven fabrics supporting layer outer side, intermediate flow channel grid and hydrophilic nonwoven fabrics supporting layer surround dialyzate runner.
Further preferred, between described diaphragm and hydrophilic nonwoven fabrics supporting layer, between intermediate flow channel grid and hydrophilic nonwoven fabrics supporting layer, all adopt hot melting way to bond, form the film bag of Integral sealing structure.
Further preferred, the thickness of described MBR plate film assembly is 3～5mm, and tamped density is 200～300m
2/ m
3.
In a preferred embodiment of the present utility model, the unit string number of described combined packing string in reactor body is 40～80 strings/m
3, specific surface area is 250～400m
2/ m
3.
In a preferred embodiment of the present utility model, described aerating apparatus comprises some microporous aeration discs that are uniformly distributed in reactor body inner bottom part, and the service area of this microporous aeration disc is 0.25～0.50m
2/, the spacing of adjacent microporous aeration disc is 1～1.5m.
In a preferred embodiment of the present utility model, the top of described reactor body is provided with water-in, and its inside is provided with dissolved oxygen, pH and on-line temperature monitoring element.
A method of applying the processing waste water of above-mentioned MBR denitrification integrated device, comprises the steps:
(1) with hydrochloric acid or sodium hydroxide, regulate pH to 6.5～8.5 of waste water;
(2) waste water that regulates pH is passed in reactor body, at the temperature of 15～35 ℃, reacts, the start and stop by aerating apparatus simultaneously by the Dissolved Oxygen concentration Control in reactor body at 0.5～2mg/L;
(3) by vacuum pump control MBR plate film assembly effluent flux to 15～30L/m
2h, and every operation 7～9min, suspend 1～3min, continues to be circulated to working pressure and be greater than 40kPa, and MBR plate film assembly is carried out to matting;
(4), after matting, continue operation.
In a preferred embodiment of the present utility model, described step (3) is: by vacuum pump control MBR plate film assembly effluent flux to 20～30L/m
2h, and every operation 8min, suspend 2min, continues to be circulated to working pressure and be greater than 40kPa, and MBR plate film assembly is carried out to matting.
The beneficial effects of the utility model are:
1, MBR denitrification integrated device of the present utility model comprises a reactor body, at least one connection vacuum pump and manometric MBR plate film assembly, one aerating apparatus and some combined packing strings, this at least one MBR plate film assembly is located at reactor body Nei center, this aerating apparatus is arranged at the bottom in reactor body, these some combined packing strings evenly hang and are distributed in reactor body, and fill the gap between above-mentioned MBR plate film assembly and reactor body, high ammonia-nitrogen wastewater is entered in the reactor body of MBR denitrification integrated device of the present utility model by water inlet pipe after pre-treatment, by aerating apparatus, in reactor body bottom, carry out aeration, the organism that the microorganism adhering on combined packing string be take in water inlet is nutritive substance, along with biomembranous continuous growth, dissolved oxygen and organic transmission are subject to resistance to mass transfer impact, formed the concentration gradient of dissolved oxygen, biofilm surface dissolved oxygen is higher, main enrichment aerobic bacteria and nitrifier, the microbial film of internal layer is because a large amount of consumption that oxygen transmission is obstructed and skin is biological cause dissolved oxygen lower, produce oxygen-starved area, so microorganism be take denitrifying bacteria as main, in this external system, also has the active sludge of suspension growth, these mud are exactly nitrifier and the denitrification flora of realizing synchronous nitration and denitrification, by the integral body to dissolved oxygen, control the function that has reached efficient denitrification, water inlet realizes mud-water separation by the MBR plate film assembly at reaction tank middle part after by the Degradation of microorganism, microorganism is trapped in reactor body, maintain sludge concentration in reactor, extend sludge age, make the less zero release that even reaches mud of sludge quantity producing, and the SS of water outlet can reach below 2mg/L,
2, the combined packing string of MBR denitrification integrated device of the present utility model comprises an axial cord and is connected on from top to bottom a plurality of packing sheets on this axial cord, this packing sheet comprises an annulus and some hydroformylation fibrous bundles, these some hydroformylation fibrous bundle annular arrays are distributed on the ring of this annulus, the inside of this annulus is provided with the some king spokes that distribute along circle ring center's annular array, every spoke is provided with at least one pair of inferior spoke of this spoke symmetry relatively, such structure is not stopped up, do not unite, specific surface area is large, biofilm is fast, the biological membranous layer of growth has certain thickness, intrasystem sludge concentration is high, king spoke and time spoke can effectively cut bubble, improve dissolved oxygen efficiency, adapt to multiple sewage disposal,
3, aerating apparatus of the present utility model comprises some microporous aeration discs that are uniformly distributed in reactor body inner bottom part, and the service area of this microporous aeration disc is 0.25～0.50m
2/, the spacing of adjacent microporous aeration disc is 1～1.5m, is conducive to control the dissolved oxygen effect of aeration plate, maintains DO between 1～2mg/L, forms the dissolved oxygen environment of synchronous nitration and denitrification;
The monolithic diaphragm thickness of the MBR plate film assembly that 4, the utility model adopts is reduced to 3～5mm by traditional 7mm, and tamped density increases more than 40% compared with classic flat-plate MBR product, and membrane flux is at 20-30L/m
2h, by the adjustment of operating parameter, can effectively improve its contamination resistance;
Accompanying drawing explanation
Fig. 1 is the structural representation of MBR denitrification integrated device of the present utility model;
Fig. 2 is the structural representation of the packing sheet of MBR denitrification integrated device of the present utility model.
Fig. 3 is the part-structure sectional view of the MBR plate film assembly of MBR denitrification integrated device of the present utility model.
Embodiment
By embodiment, by reference to the accompanying drawings the technical solution of the utility model is further detailed and is described below.
As shown in Figure 1, a kind of MBR denitrification integrated device 1, comprise a reactor body 11, the MBR plate film assembly 12 of at least one connection vacuum pump 15 and tensimeter 16, one aerating apparatus 13 and some combined packing strings 14, the top of described reactor body 11 is provided with water-in, its inside is provided with dissolved oxygen, pH and on-line temperature monitoring element (comprise that dissolved oxygen is at line electrode 17, online thermometer 18 and online pH electrode 19), described at least one MBR plate film assembly 12 is located at reactor body 11Nei center, described aerating apparatus 13 is arranged at the bottom in reactor body 11, described some combined packing strings 14 evenly hang and are distributed in reactor body 11, and fill the gap between above-mentioned MBR plate film assembly 12 and reactor body 11.
The unit string number of described combined packing string 14 in reactor body 11 is 40～80 strings/m
3, specific surface area is 250～400m
2/ m
3, aforesaid combination type filler string 14 comprises an axial cord 141 and is connected on from top to bottom the packing sheet 142 that a plurality of diameters on this axial cord 141 are 12～15cm, as shown in Figure 2, this packing sheet 142 comprises an annulus 1420 and six hydroformylation fibrous bundles 1421, these six hydroformylation fibrous bundle 1421 annular arrays are distributed on the ring of this annulus 1420, the inside of this annulus 1420 is provided with along the six roots of sensation king spoke 1422 of annulus 1420 center annular array distribution, every king spoke 1422 is provided with the inferior spoke 1423 of two pairs of relative these spoke symmetries, and the length that is positioned at the inferior spoke 1423 of described annulus 1420 radial outsides is greater than the such structure of length of the inferior spoke 1423 that is positioned at annulus 1420 radially inner sides and does not stop up, do not unite, specific surface area is large, biofilm is fast, the biological membranous layer of growth has certain thickness, intrasystem sludge concentration is high, king spoke 1422 and time spoke can effectively cut bubble, improve dissolved oxygen efficiency, adapt to multiple sewage disposal.
As shown in Figure 3, described MBR plate film assembly 12 comprise a thickness be 1～1.5mm intermediate flow channel grid 121, be positioned at the hydrophilic nonwoven fabrics supporting layer 122 of intermediate flow channel both sides and be positioned at the diaphragm 123 of hydrophilic nonwoven fabrics supporting layer 122 outer sides, intermediate flow channel grid 121 surrounds dialyzate runner with hydrophilic nonwoven fabrics supporting layer 122.Between described diaphragm 123 and hydrophilic nonwoven fabrics supporting layer 122, between intermediate flow channel grid 121 and hydrophilic nonwoven fabrics supporting layer 122, all adopt hot melting way to bond, form the film bag of Integral sealing structure.Monolithic diaphragm 123 thickness of this MBR plate film assembly 12 are reduced to 3～5mm by traditional 7mm, and tamped density increases more than 40% compared with classic flat-plate MBR product, and membrane flux is at 20-30L/m
2h, by the adjustment of operating parameter, can effectively improve its contamination resistance
Described aerating apparatus 13 comprises some microporous aeration discs 131 that are uniformly distributed in reactor body 11 inner bottom parts, and the service area of this microporous aeration disc 131 is 0.25～0.50m
2/, the spacing of adjacent microporous aeration disc 131 is 1～1.5m, is conducive to control the dissolved oxygen effect of aeration plate, maintains DO between 1～2mg/L, forms the dissolved oxygen environment of synchronous nitration and denitrification
High ammonia-nitrogen wastewater is entered in the reactor body 11 of MBR denitrification integrated device 1 of the present utility model by water inlet pipe after pre-treatment, air carries out aeration by microporous aeration disc 131 in reactor body 11 bottoms, simultaneously the parameter of this waste water by dissolved oxygen at line electrode 17, online thermometer 18 and online pH electrode 19 carry out Real-Time Monitoring, the organism that the microorganism adhering on combined packing string 14 be take in water inlet is nutritive substance, along with biomembranous continuous growth, dissolved oxygen and organic transmission are subject to resistance to mass transfer impact, formed the concentration gradient of dissolved oxygen, the concentration gradient of this dissolved oxygen is coordinated to control in line electrode 17 monitorings by dissolved oxygen and is maintained, biofilm surface dissolved oxygen is higher, main enrichment aerobic bacteria and nitrifier, the microbial film of internal layer is because a large amount of consumption that oxygen transmission is obstructed and skin is biological cause dissolved oxygen lower, produce oxygen-starved area gathering denitrifying bacterium, in this external system, also has the active sludge of suspension growth, these mud are exactly nitrifier and the denitrification flora of realizing synchronous nitration and denitrification, by the integral body to dissolved oxygen, control the function that has reached efficient denitrification, water inlet realizes mud-water separation by the MBR plate film assembly 12 at reaction tank middle part after by the Degradation of microorganism, microorganism is trapped in reactor body 11, maintain sludge concentration in reactor, extend sludge age, make the less zero release that even reaches mud of sludge quantity producing, and the SS of water outlet can reach below 2mg/L,
Apply above-mentioned MBR denitrification integrated device 1 and process a method for waste water, comprise the steps:
(1) with hydrochloric acid or sodium hydroxide, regulate pH to 6.5～8.5 of waste water;
(2) waste water that regulates pH is passed in reactor body 11, at the temperature of 15～35 ℃, react, if temperature reduces lower than 15 ℃ of rates of nitrification, need to take suitable Insulation, start and stop by aerating apparatus 13 simultaneously by the Dissolved Oxygen concentration Control in reactor body 11 at 0.5～2mg/L;
(3) by vacuum pump 15 (can control by automatic system) control MBR plate film assembly 12 effluent flux to 20～30L/m
2h, and every operation 8min, suspend 2min, continues to be circulated to flux and obviously decline, and working pressure is greater than 40kPa, and MBR plate film assembly 12 is carried out to matting;
(4), after matting, continue operation.
The above, it is only preferred embodiment of the present utility model, therefore can not limit according to this scope that the utility model is implemented, the equivalence of doing according to the utility model the scope of the claims and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (9)
1. a MBR denitrification integrated device, is characterized in that: comprise a reactor body, at least one connection vacuum pump and manometric MBR plate film assembly, an aerating apparatus and some combined packing strings,
This at least one MBR plate film assembly is located at reactor body Nei center, this aerating apparatus is arranged at the bottom in reactor body, these some combined packing strings evenly hang and are distributed in reactor body, and fill the gap between above-mentioned MBR plate film assembly and reactor body;
Aforesaid combination type filler string comprises an axial cord and is connected on from top to bottom a plurality of described packing sheet on this axial cord; This packing sheet comprises an annulus and some hydroformylation fibrous bundles, these some hydroformylation fibrous bundle annular arrays are distributed on the ring of this annulus, the inside of this annulus is provided with the some king spokes that distribute along circle ring center's annular array, and every king spoke is provided with at least one pair of inferior spoke of this spoke symmetry relatively.
2. a kind of MBR denitrification integrated device as claimed in claim 1, it is characterized in that: described every king spoke is provided with the inferior spoke of at least two pairs of relative these spoke symmetries, and the length that is positioned at the inferior spoke of described annulus radial outside is greater than the length of the inferior spoke that is positioned at annulus radially inner side.
3. a kind of MBR denitrification integrated device as claimed in claim 1, is characterized in that: the diameter of described packing sheet is 12～15cm.
4. a kind of MBR denitrification integrated device as claimed in claim 1, it is characterized in that: described MBR plate film assembly comprise a thickness be 1～1.5mm intermediate flow channel grid, be positioned at the hydrophilic nonwoven fabrics supporting layer of intermediate flow channel both sides and be positioned at the diaphragm of hydrophilic nonwoven fabrics supporting layer outer side, intermediate flow channel grid and hydrophilic nonwoven fabrics supporting layer surround dialyzate runner.
5. a kind of MBR denitrification integrated device as claimed in claim 4, it is characterized in that: between described diaphragm and hydrophilic nonwoven fabrics supporting layer, between intermediate flow channel grid and hydrophilic nonwoven fabrics supporting layer, all adopt hot melting way to bond, form the film bag of Integral sealing structure.
6. a kind of MBR denitrification integrated device as claimed in claim 5, it is characterized in that: the thickness of described MBR plate film assembly is 3～5mm, and tamped density is 200～300m
2/ m
3.
7. a kind of MBR denitrification integrated device as claimed in claim 1, is characterized in that: the unit string number of described combined packing string in reactor body is 40～80 strings/m
3, specific surface area is 250～400m
2/ m
3.
8. a kind of MBR denitrification integrated device as claimed in claim 1, is characterized in that: described aerating apparatus comprises some microporous aeration discs that are uniformly distributed in reactor body inner bottom part, and the service area of this microporous aeration disc is 0.25～0.50m
2/, the spacing of adjacent microporous aeration disc is 1～1.5m.
9. a kind of MBR denitrification integrated device as described in arbitrary claim in claim 1 to 8, is characterized in that: the top of described reactor body is provided with water-in, and its inside is provided with dissolved oxygen, pH and on-line temperature monitoring element.
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| CN201420403678.XU CN203999107U (en) | 2014-07-21 | 2014-07-21 | A kind of MBR denitrification integrated device |
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| CN201420403678.XU CN203999107U (en) | 2014-07-21 | 2014-07-21 | A kind of MBR denitrification integrated device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229979A (en) * | 2014-07-21 | 2014-12-24 | 三达膜环境技术股份有限公司 | MBR denitrification integrated device and application thereof |
| CN104828935A (en) * | 2015-06-01 | 2015-08-12 | 哈尔滨工业大学 | Method for realizing quick reduction of contaminants in domestic sewage within short time based on variable pressure gradient |
| WO2017035891A1 (en) * | 2015-09-01 | 2017-03-09 | Jiangxi Jdl Environmental Protection Co., Ltd. | Method and system of wastewater treatment with zero discharge of sludge |
-
2014
- 2014-07-21 CN CN201420403678.XU patent/CN203999107U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229979A (en) * | 2014-07-21 | 2014-12-24 | 三达膜环境技术股份有限公司 | MBR denitrification integrated device and application thereof |
| CN104229979B (en) * | 2014-07-21 | 2017-01-11 | 三达膜环境技术股份有限公司 | MBR denitrification integrated device and application thereof |
| CN104828935A (en) * | 2015-06-01 | 2015-08-12 | 哈尔滨工业大学 | Method for realizing quick reduction of contaminants in domestic sewage within short time based on variable pressure gradient |
| CN104828935B (en) * | 2015-06-01 | 2017-03-08 | 哈尔滨工业大学 | A kind of method realizing the quick abatement of pollutant in sanitary sewage under the gradient based on pressure changeable in short-term |
| WO2017035891A1 (en) * | 2015-09-01 | 2017-03-09 | Jiangxi Jdl Environmental Protection Co., Ltd. | Method and system of wastewater treatment with zero discharge of sludge |
| AU2015407432B2 (en) * | 2015-09-01 | 2018-12-06 | Jiangxi Jdl Environmental Protection Co., Ltd. | Method and system of wastewater treatment with zero discharge of sludge |
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