CN101508488B - Sequencing batch biomembrane reaction device and sewage treatment method - Google Patents
Sequencing batch biomembrane reaction device and sewage treatment method Download PDFInfo
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- CN101508488B CN101508488B CN2009100586322A CN200910058632A CN101508488B CN 101508488 B CN101508488 B CN 101508488B CN 2009100586322 A CN2009100586322 A CN 2009100586322A CN 200910058632 A CN200910058632 A CN 200910058632A CN 101508488 B CN101508488 B CN 101508488B
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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
Abstract
The invention discloses a sequencing batch biomembrane reaction device and a sewage treatment method, which belong to the field of biomembrane sewage treatment. The invention aims at overcoming the respective defects of the prior fixed filler type SBBR and the mobile filler type SBBR. The device comprises a reactor consisting of at least three nested barrels. An inner barrel and a middle barrel both have bottom openings, are communicated with the bottom of an outer barrel, and have tops at the same level. A micropore aeration ring is arranged between the inner barrel and the middle barrel. Activated calcium carbonate modified poly(methyl acrylate-vinyl acetate-methyl methacrylate)porous microbe immobilization vectors are arranged in the space between the inner barrel, the middle barrel and the outer barrel. The side wall of the outer barrel is provided with an exchange drainage pipe; the bottomof the outer barrel is provided with a blowdown pipe and is communicated with an air compressor with a time controller through an air pipe. The method comprises the steps of water inlet, aeration, aeration stoppage and drainage.
Description
Technical field
The invention belongs to the biomembrance process sewage treatment area, relate to a kind of novel sequencing batch biofilm reactor process (SBBR) and handle the device and method that contains ammonia nitrogen organic waste water.
Background technology
Aspect biological denitrification process research, (sequencing batchbiofilm reactor SBBR) is a current research focus to sequencing batch biofilm reactor.
SBBR was proposed by Gonzales and Wilderer in nineteen ninety.1992, German scholar Wilderer is problems such as solution water inlet hydraulic load fluctuates excessive and prevent that the little microorganism of growth velocity from eluriating away from reactor assembly, can not handle the present situation of some high loading or toxic trade effluent simultaneously at traditional activated sludge process, the formal sequence batch (operational mode that proposes biofilm reactor, i.e. SBBR technology.
SBBR is on the basis of sequencing batch active sludge (SBR); follow the operating method of sequencing batch active sludge; different fillers is housed in reactor, as adds that gac (powder or particulate state) makes granular sludge or filler is installed in reactor and make active sludge on filler, form microbial film.It is a kind of novel combined biofilm reactor that microbial film and activated sludge process are organically combined.
SBBR technology is by adding the basis of carrier as attached growth of microorganisms in SBR, batch mode of operation is incorporated in the biofilm reactor, can improve the sludge concentration of system on the one hand, increase the contact area of microorganism and sewage, improve the fixed amount and the ability of resisting the external environment variation of nitrifier, denitrifying bacteria, prevent that biomass runs off with suspended sludge; On the other hand, because system has introduced the intermittent operation feature, its operation of periodically operating, filling row's formula makes SBBR possess very strong may command ability.
Using at present more is fixing material filling type SBBR.Haydite, soft fibers filler, polyethylene filler or other stationarity bio-carrier fixedly are housed in the material filling type SBBR, and principle of work and traditional trickling filter and contact-oxidation pool are closely similar.Studies show that using fixedly, the SBBR of filler can obtain wastewater treatment efficiency preferably.Particularly can be in a reactor finish denitrification process, and obtain better effects by the control of anoxic, different operations such as aerobic.But, for solving the fixedly renewal of carrier biofilm and the blockage problem of filler, back-purge system need be set, carry out the back flushing demoulding and eliminate obstruction, make device and operation become complicated.Moreover fixedly filler is limited to the cutting action of bubble, and the mass-transfer efficiency of oxygen is not high, and the mass-transfer efficiency of organic pollutant is not high yet in the whole reactor.In addition, on the filler selection of lightweight, efficient, inexpensive, long service life, also there is certain difficulty.
The report that Moveable packings formula SBBR is also arranged; granular movably bio-carrier (as granulated active carbon etc.) is housed in reactor; the granulated active carbon carrier is irregular turbulent fluctuation state in reactor; be called GAC-SBBR; this method can be removed the difficult degradation substrate, also can reduce volatile organic matter simultaneously and be dispersed in the air, but the fluidization of carrier is not good enough in the reactor; mass transfer effect is undesirable, and carrier is easily broken to run off.
Summary of the invention
The objective of the invention is to solve the deficiency that existing fixedly material filling type and Moveable packings formula SBBR exist separately, a kind of improved sequencing batch biomembrane reaction device and operation method are provided, can effectively solve fixedly static biomembranous replacement problem among the material filling type SBBR, strengthen biomembranous activity greatly, improve mass-transfer efficiency, simultaneously can avoid occurring the filler blockage problem, save the backwash operation operation, simplify the operation, and general relatively Moveable packings formula SBBR, can improve the fluidizing performance of carrier greatly, thereby improve mass-transfer efficiency greatly, treatment effect is better.
Purpose of the present invention can realize by following technical proposals:
A kind of sequencing batch biomembrane reaction device comprises the reactor that at least three nested cylindrical shells constitute, inner core, middle tube bottom opening also all is communicated with outer tube bottom, inner core and middle tube top maintain an equal level, the urceolus top exceeds inner core and middle tube, inner core, be provided with the micro-pore aeration ring between the middle tube, inner core, middle tube, be provided with treated carbonates modified polyacrylic acid methyl esters-vinyl acetate-methyl methacrylate porous microbial fixation support in the urceolus clearance space each other, offer on the sidewall of urceolus and change the appearance water shoot, outer tube bottom offers blow-down pipe, outer tube bottom is communicated with air compressor by tracheae, and the function unit of air compressor is connected with time controller.
Described changing held water shoot and comprised that 1/3rd change and hold water shoot, 2/3rds and change and hold water shoot and change the appearance water shoot entirely.
Between described urceolus and the middle tube, be provided with fixedly voussoir between middle tube and the inner core.
Described tracheae is provided with gas meter.
A kind of sequencing batch biofilm sewage water treatment method comprises the steps:
A. water inlet: sewage is from the instantaneous adding of reactor head;
B. aeration phase: aeration rate is controlled at the level that the carrier fluidisation is got up, the biological particles that this carrier biofilm forms reactor interior, in, be ciculation fluidized state in outer three tubes, the time length is determined according to wastewater property;
Described carrier is treated carbonates modified polyacrylic acid methyl esters-vinyl acetate-methyl methacrylate porous microbial fixation support.
C. stop the stage of exposing to the sun: stop aeration, biological particles begins precipitation, the very fast formation anaerobic environment of while reactor, and the anoxic time that stops exposing to the sun is 1.5～2 hours;
D. draining: the sewage after the processing holds water shoot discharge reactor through changing.
Described step b and step c repeat more than twice.
Every day, a～d carried out 2～3 cycles set by step, and in each cycle, step b and step c repeat more than twice.
The present invention adopts the device of said structure, only adopts nested cylindrical shell to feed gas and then can realize the sequencing batch biofilm reactor process sewage disposal, and the parts of reactor are few, simple in structure, and operational administrative is easy; Carrier is ciculation fluidized state in the reactor, and the biological particles collision is violent, helps biomembranous real-time update, keeps good activity; Secondly, carrier is ciculation fluidized state has increased the chance that pollutant component contacts with microbial film in the sewage, has improved the mass-transfer efficiency of pollutent; Moreover the ciculation fluidized cutting action of also having strengthened bubble of carrier has improved the mass-transfer efficiency of oxygen; The carrier that adopts is suitable for microbial immobilized, and wet density is slightly larger than water, is easy to fluidisation, is difficult for fragmentation, is difficult for running off.
Adopt the method for above-mentioned steps, aeration in each cycle/stop exposing to the sun alternately, aeration aerobic stage control aeration rate, realize nitration denitrification simultaneously, anoxic stage that stops exposing to the sun can strengthen the denitrification effect, and this operation scheme helps energy efficient, and can obtain good denitrification effect, when obtaining fine denitrification effect, the removal effect of COD is also more satisfactory.
As seen, adopt the device of said structure and adopt the method for above-mentioned steps, can effectively solve fixedly static biomembranous replacement problem among the material filling type SBBR, strengthen biomembranous activity greatly, improve mass-transfer efficiency, simultaneously can avoid the filler blockage problem occurring, save the backwash operation operation, simplify the operation, and general relatively Moveable packings formula SBBR, can improve the fluidizing performance of carrier greatly, thereby improve mass-transfer efficiency greatly, treatment effect is better.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of reaction unit of the present invention;
Fig. 2 is the change in concentration figure that the present invention uses dissolved oxygen in the one-period reactor;
Fig. 3 is the variation diagram that the present invention uses various forms nitrogen concentration in the one-period;
Fig. 4 is the variation diagram that the present invention uses COD concentration in the one-period;
Number in the figure: the 1st, reactor, the 2nd, fixing voussoir, 3 is 1/3rd to change the appearance water shoot, 4 is 2/3rds to change the appearance water shoot, the 5th, change the appearance water shoot entirely, the 6th, micro-pore aeration ring, the 7th, blow-down pipe, the 8th, gas meter, the 9th, air compressor, the 10th, time controller.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiments and the drawings.
As shown in Figure 1, sequencing batch biomembrane reaction device comprises the reactor 1 that three nested cylindrical shells constitute, inner core, middle tube bottom opening also all are communicated with outer tube bottom, inner core and middle tube top maintain an equal level, the urceolus top exceeds inner core and middle tube, be provided with micro-pore aeration ring 6 between inner core, the middle tube, be provided with treated carbonates modified polyacrylic acid methyl esters-vinyl acetate-methyl methacrylate porous microbial fixation support in inner core, middle tube, the urceolus clearance space each other.Offering 1/3rd on the sidewall of urceolus changes and holds water shoot 3,2/3rds and change and hold water shoot 4 and change appearance water shoot 5 entirely, outer tube bottom offers blow-down pipe 7, outer tube bottom is communicated with 9 by tracheae with air compressor, and the function unit of air compressor 9 is connected with time controller 10.
Be to strengthen firmness, between urceolus and the middle tube, be provided with fixedly voussoir 2 between middle and the inner core.
Above-mentioned tracheae is provided with gas meter 8.
It is as follows to utilize said apparatus to carry out the method for sequencing batch biofilm reaction treatment sewage:
Earlier artificial synthetic wastewater is to verify, this synthetic wastewater is mainly formed by glucose, ammonium chloride, dipotassium hydrogen phosphate, potassium primary phosphate, sodium bicarbonate and a small amount of trace element configuration.The operation of employing sequence batch (moves 3 cycles every day, each periodic duty 8 hours, and each period treatment method comprises the steps:
A. water inlet: sewage is from the instantaneous adding of reactor head;
B. aeration phase: aeration rate is controlled at the level that the carrier fluidisation is got up, the biological particles that the carrier biofilm forms reactor interior, in, be ciculation fluidized state in outer three tubes, carried out aeration 2.5 hours by time controller 10 control air compressors 9;
C. stop the stage of exposing to the sun: stop aeration, biological particles begins precipitation, the very fast formation anaerobic environment of while reactor, and the anoxic time that stops exposing to the sun is 1.5 hours;
Repeating step b aeration 2.5h, repeating step c stops the 1.5h that exposes to the sun then.
D. draining: the sewage after the processing changes through 1/3rd and holds water shoot 3 discharge reactors.
The phase processing water yield is 8L weekly, and reactor useful volume 24L, the sewage after the processing change through 1/3rd and hold water shoot 3 from density current discharge reactor.During operation, aeration rate is adjusted to the level that the carrier fluidisation is got up, and is stabilized in this level, and under this aeration condition, the change in concentration of dissolved oxygen is seen Fig. 2 in the one-period internal reaction device.At aeration phase, DO concentration maintains about 2.5mg/L substantially, is stopping the stage of exposing to the sun, and the DO density loss is rapid, and DO concentration can drop to about 0.4mg/L.
Fig. 3 has shown the changing conditions of an interior various forms nitrogen concentration of the cycle of operation, when influent ammonia nitrogen and total nitrogen concentration are respectively 41.3mg/L and 42.0mg/L, the water inlet data have been considered the non-former water dilution that appearance causes of changing entirely, after one-period is handled, the concentration of water outlet ammonia nitrogen and total nitrogen is respectively 2.4mg/L and 3.3mg/L, ammonia-N removal rate reaches 94.2%, and the clearance of total nitrogen reaches 92.1%.Analyze denitrogenation mechanism, can find out obviously that from the nitrite nitrogen of Fig. 3 and the change in concentration of nitric nitrogen there is the nitration denitrification phenomenon in the aeration aerobic stage, and effect is remarkable, there is denitrification in the anoxic stage that stops exposing to the sun, and effect is also more obvious.
Fig. 4 has represented the changing conditions of an interior COD concentration of the cycle of operation, when water inlet COD concentration is 1062.8mg/L, the water inlet data have been considered the non-former water dilution that appearance causes of changing entirely, after one-period is handled, effluent COD concentration is 219.2mg/L, the COD clearance reaches 79.4%, and the removal of COD mainly is at first aeration aerobic stage.
In other embodiments, steps d can also be changed the sewage after handling and be held water shoot 4 or change 5 discharges of appearance water shoot entirely through 2/3rds, to realize the capacitance type that changes of different volumetric quantitys.
Reaction unit maybe needs to safeguard, when repairing, can sewage all be discharged emptying by blow-down pipe 7 not using.
Disclosed all features in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (8)
1. sequencing batch biomembrane reaction device, it is characterized in that, comprise the reactor that at least three nested cylindrical shells constitute, inner core, middle tube bottom opening also all is communicated with outer tube bottom, inner core and middle tube top maintain an equal level, the urceolus top exceeds inner core and middle tube, inner core, be provided with the micro-pore aeration ring between the middle tube, inner core, middle tube, be provided with treated carbonates modified polyacrylic acid methyl esters-vinyl acetate-methyl methacrylate porous microbial fixation support in the urceolus clearance space each other, offer on the sidewall of urceolus and change the appearance water shoot, outer tube bottom offers blow-down pipe, outer tube bottom is communicated with air compressor by tracheae, and the function unit of air compressor is connected with time controller.
2. a kind of sequencing batch biomembrane reaction device as claimed in claim 1 is characterized in that, described changing held water shoot and comprised that 1/3rd change and hold water shoot, 2/3rds and change and hold water shoot and change the appearance water shoot entirely.
3. a kind of sequencing batch biomembrane reaction device as claimed in claim 1 or 2 is characterized in that, between described urceolus and the middle tube, be provided with fixedly voussoir between middle tube and the inner core.
4. a kind of sequencing batch biomembrane reaction device as claimed in claim 1 or 2 is characterized in that described tracheae is provided with gas meter.
5. a kind of sequencing batch biomembrane reaction device as claimed in claim 3 is characterized in that described tracheae is provided with gas meter.
6. a sequencing batch biofilm sewage water treatment method is characterized in that, comprises the steps:
A. water inlet: sewage is from the instantaneous adding of reactor head;
B. aeration phase: aeration rate is controlled at and can just makes the level that treated carbonates modified polyacrylic acid methyl esters-vinyl acetate-methyl methacrylate porous microbial fixation support fluidisation is got up, the biological particles that this carrier biofilm forms reactor interior, in, be ciculation fluidized state in outer three tubes, the time length is determined according to wastewater property;
C. stop the stage of exposing to the sun: stop aeration, biological particles begins precipitation, the very fast formation anaerobic environment of while reactor, and the anoxic time that stops exposing to the sun is 1.5～2 hours;
D. draining: the sewage after the processing holds water shoot discharge reactor through changing.
7. a kind of sequencing batch biofilm sewage water treatment method as claimed in claim 6 is characterized in that, described step b and step c repeat more than twice.
8. a kind of sequencing batch biofilm sewage water treatment method as claimed in claim 6 is characterized in that, every day, a～d carried out 2～3 cycles set by step, and in each cycle, step b and step c repeat more than twice.
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| CN101508488B true CN101508488B (en) | 2011-07-20 |
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| CN102134149B (en) * | 2011-05-10 | 2012-07-04 | 山东建筑大学 | Composite moving bed bio-film reactor |
| CN103361264B (en) * | 2012-03-30 | 2014-12-31 | 北京愿景宏能源环保科技发展有限公司 | Volume-adjustable fermentation tank, control device thereof and control method thereof |
| CN103508555B (en) * | 2013-10-08 | 2015-04-29 | 中国石油天然气集团公司 | Reactor for realizing suspension of biofilm carriers under low aeration quantity |
| CN104310582B (en) * | 2014-11-10 | 2016-03-09 | 哈尔滨工业大学 | A kind of integrated membrane coupled anaerobic bioreactor of effective reduction fouling membrane |
| CN104478078A (en) * | 2014-12-09 | 2015-04-01 | 符惠 | Immobilized microbial tank for aeration |
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