CN100480194C - Aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor - Google Patents
Aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor Download PDFInfo
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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 invention discloses an aerobic inner loop reflux typed immobilized microbe fluid-bed reactor, which comprises the following parts: sediment area, reacting area and depositing area, wherein the bottom of depositing area possesses sludge hopper with water distributor on the top, which connects pump through inlet pipe; the support aerating pipe is set on the water distributor, which connects inlet pipe and microhole aerating machine; the reflective board is set on the support aerating pipe; the immobilized microbe fill and inner loop reflux pipe are set in the reacting area with the first and second hopper-shaped sampling holes on the top of inner loop reflux; the bottom of sludge hopper connects the first stop valve and sludge draining pipe; the outer wall of reactor bulk possesses multiple sampling holes; the top of reactor bulk connects U-shaped pipe, outlet pipe, liquid rotor flow gauge, the second stop valve and outlet tank.
Description
Technical field
The present invention relates to a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor.
Background technology
Because environmental pollution is serious day by day, country also more and more payes attention to environmental improvement.Particularly along with the implementation of new socialist countryside construction in the whole nation, strengthen the rural ecological environmental reconstruction, strengthening rural infrastructure development has become the emphasis of national Eleventh Five-Year Plan work, and wherein especially with the improvement of water surrounding, the development of sewage treatment facility and equipment is main.The invention of this country is exactly the practical problems at sewage disposal, and the development of new inner circulating reflux type immobilization microorganism fluidized bed reactor is to improve wastewater treatment efficiency, particularly nitric efficiency.
Earlier 1970s, the aggravation of energy dilemma and becoming increasingly conspicuous of global environment problem in the world wide, and interdisciplinary mutual intersection has promoted people's deepening continuously to biologic treating technique research.Breakthrough progress has appearred in the theory of the biological treatment of waste water and utilisation technology, and reactor becomes one of field wherein with fastest developing speed.From the angle of microorganism growth pattern reactor, the wastewater biological reactor is divided into two kinds of base types: first kind is the apposition growth reactor.With the growth of microbial film form, its shortcoming is filler costliness, relatively low, the easy obstruction (to the filter tank) of processing load, power consumption big (to expanded bed, fluidized-bed) to the microorganism of this class reactor on the solid support thing.Second kind is the suspension growth reactor.This reactor needs to stir (or otherwise) so that microorganism (as granule sludge, granular filler) is in suspended state all the time.Because simple in structure, obvious processing effect, this type of reactor is considered to the most rising wastewater treatment equipment.
At present, common aerobic reactor has sbr reactor device, ICEAS reactor, CASS reactor etc., they are the main working substance in the treatment system mostly with the active sludge, rely on the microorganism metabolic function degradation of contaminant in the active sludge, usually BOD, COD, the SS of sewage can reach very high clearance, ammonia nitrogen removal frank is than the anaerobic treatment height, but because aerobic environment needs the power oxygen supply, maintenance cost is higher, and sludge bulking and sludge loss easily take place in system, administrative skill requires high, and cost of sewage disposal is higher.Therefore, pressing for development of new efficient low-consume reactor disposes of sewage.
Immobilized microorganism technique is to use chemistry or physical means, with the zone that free cell or enzyme are positioned to limit, makes it keep method active and that can recycle.Be mainly used in fermentative production at first, the later stage seventies, be utilized water treatment field, then become the focus of various countries' scholar's research in recent years.It is too little that immobilized microorganism technique has overcome biomass cells, and it is difficult to separate with the aqueous solution, easily cause the shortcoming of secondary pollution, kept efficient height, stability strong, can purifying and keep the advantage of high-efficiency strain, have broad application prospects in field of waste water treatment.Immobilized microorganism technique is compared with other environmental improvement technology, has following characteristics: 1) the microbial immobilized high density and the high reactivity that can keep microorganism in the reactor helps improving the processing load of pollutent and removing efficient; 2) technology of employing immobilized microorganism technique, sludge yield is low, has alleviated the burden of follow-up sludge disposal; 3) microbial immobilized formation particulate form helps the mud-water separation of precipitation process; 4) will have the microbial immobilized of some hardly degraded organic substance characteristic of degraded, can handle some industry waste water effectively; 5) microbial immobilized ability to bear to toxic substance is strong, good stability; 6) technology has been simplified in microbial immobilized processing, saves the investment cost and the working cost of Pollution abatement.Therefore, aspect environmental pollution improvement, carrying out extensive studies and deep discussion over against immobilized microorganism technique.
Immobilized microorganism technique has caused common attention with its unique advantage in field of waste water treatment, carried out extensive studies and application, but will realize its practicability or industrialization, also has many problems further to research and solve.The immobilized microorganism DESIGN OF REACTOR that matches with it is exactly one of them, and the immobilized microorganism reactor has boundless application prospect, yet the data of relevant immobilized microorganism DESIGN OF REACTOR aspect but relatively lacks.Therefore, the problem in conjunction with current sewage-treating reactor exists designs aerobic type immobilized microorganism reactor, and for improving sewage treating efficiency, special ammonia-N removal rate has great importance.
Make a general survey of the domestic and foreign literature data, reactor mainly is made up of five parts usually: water inlet distribution system, reaction zone, triphase separator, outlet system, sludge drainage system and gas gathering system.1) the water inlet distribution system is located at the bottom of reactor, its function mainly is that waste water is assigned to whole reactor uniformly, make organism can be in reaction zone uniform distribution, help fully contacting of waste water and immobilized microorganism filler, make the microorganism in the reactor can fully obtain nutrition, help improving the utilization ratio of reactor volume like this.Simultaneously, the water inlet distribution system also has agitating function.2) reaction zone is the core of whole reactor, comprises immobilized microorganism filler, fluidized layer and sludge settling district.Reaction zone is the zone of enrichment immobilized microorganism filler, and waste water here fully contacts with the immobilized microorganism filler, produces the intensive aerobic reaction, and organism is decomposed by aerobic bacteria.3) function of triphase separator is that gas, solid (immobilized microorganism filler) and liquid are separated, and is made up of settling region, air chamber and sealing gland.Gas is separated laggard air inlet chamber earlier, and the solid-liquid mixed solution separates in the settling region then, and the solid of sinking returns reaction zone by gravity by the seam that refluxes.The separating effect of triphase separator directly affects the treatment effect of reactor.4) effect of outlet system is with the sewage collecting after handling, and discharges reactor.5) effect of sludge drainage system is the excess sludge that regularly discharges in the reaction zone.The effect of gas gathering system is to collect the biogas that produces in the reactor, analyzes its content and composition, for the running status of debugging reactor provides foundation.
According to different wastewater properties, the structure of reactor is different, mainly can be divided into open and closed two kinds.Open characteristics are that the top of reactor is not sealed, not the biogas of collecting precipitation district liquid level release.This reactor mainly is the organic waste water that is used for handling lower concentration, and the waste water of middle lower concentration is after reaction zone is handled, and the organic concentration in the water outlet is lower, so the tolerance that produces in the settling region is less, does not generally need to reclaim.The structure of reactor of this form is fairly simple, is easy to construction and installation and maintenance.Enclosed characteristics are that the top of reactor seals.The structure of triphase separator does not need special collection chamber with open different, but forms a big collection chamber between liquid level and pond face, the biogas that can collect reaction zone and settling region simultaneously.The reactor of this form is applicable to handles high concentrated organic wastewater or the higher organic waste water of sulfur-bearing hydrochlorate.Because when handling high concentrated organic wastewater, the settling region still has more gas evolution, must reclaim.In addition, the shape of reactor has rectangle, square and circular, and circular reactor has that structure is stable, the uniform characteristics of water distribution, but the triphase separator of building circular reactor than rectangle and square reactor complexity many.
Summary of the invention
The purpose of this invention is to provide a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor.
The aerobic inner circulating reflux type immobilization microorganism fluidized bed reacting appliance device body that responds, reactor body is provided with the settling region from top to bottom successively, reaction zone and negative area, the bottom, negative area is provided with sludge bucket, the sludge bucket top is provided with water distributor, water distributor joins by water inlet pipe and water pump, water pump is placed in the water tank inlet, water distributor is provided with the support aeration tube, support aeration tube and inlet pipe, the micro-pore aeration machine joins, support the aeration tube upper end and be provided with reflector, be provided with immobilized microorganism filler and inner circulating reflux pipe in the reaction zone, the inner circulating reflux pipe joins by inner circulating reflux pipe pillar stiffener and reactor body, inner circulating reflux pipe upper end is provided with the second funnel-form baffle plate, second funnel-form baffle plate top is provided with the first funnel-form baffle plate, the reactor body sludge bucket bottom and first stopping valve, shore pipe joins, and the reactor body outer wall is provided with a plurality of thief holes, and reactor body top is by U type pipe and rising pipe, the liquid spinner-type flowmeter, second stopping valve and go out water tank and join.
Described immobilized microorganism filler is a bamboo charcoal immobilization aerobic microbiological filler, and its material grain is 3～8mm.The aspect ratio of settling region, reaction zone and negative area is 36:54:31～40:54:31.The first funnel-form baffle plate is connected angle with the reactor body wall be 45 °～60 °, and bus length is 100～122mm, and the first funnel-form baffle plate and inner circulating reflux pipe clamp angle are 120 °～135 °, and bus length is 50～75mm.The mouth of pipe of rising pipe, thief hole is provided with filter screen, and the filter screen aperture is 1～5mm.The tube wall that supports aeration tube is provided with the equally distributed micropore of four rows, and the aperture is 1～3mm, the aperture space 5～8mm among each row.Thief hole is 6 thief holes, and the thief hole of foot is apart from reaction zone bottom 160～180mm, six thief hole space 140～160mm, thief hole diameter 10～30mm.
The beneficial effect that the present invention has mainly shows the following aspects: the design of two funnel-form plate washers of (1) inner circulating reflux pipe and top, make that a part can reflux by the inner circulating reflux pipe in the ascending liquid, realized unpowered backflow, and settled immobilized microorganism filler also can enter reaction zone once more by the inner circulating reflux pipe and participate in reaction in the settling region, thereby increase hydraulic detention time, improve the utilising efficiency of filler, increase wastewater treatment efficiency.(2) compare with the conventional plastic filler, adopt homemade New-type bamboo charcoal immobilized microorganism filler, the immobilization denitrification microorganism can be brought into play the Degradation of microorganism and the adsorption of entrapment media simultaneously, improves the denitrogenation ability of system.And bamboo charcoal immobilized microorganism packing density is more bigger than water, can form fluidized-bed by regulating flooding velocity and flow velocity, help fully contacting of sewage and immobilized microorganism filler, make the microorganism in the reactor can fully obtain nutrition, maximize degradation of contaminant simultaneously.(3) support the design of aeration tube, can support the reflector on top, help sewage backflow, tube wall is provided with solarization air cap simultaneously, can carry out abundant aeration to reaction zone, and the structure aerobic environment is of value to immobilized microorganism metabolism, brings into play Degradation better.(4) existence of reflector had both helped phegma and immobilized microorganism filler and had flowed to reaction zone, and uniform distribution, can effectively prevent the influence of bottom upwelling to refluxing again.(5) adopt the design philosophy that increases the settling region height, can reach the purpose of abundant precipitated outlet water, backflow sewage and sedimentation immobilized microorganism filler.(6) reactor head is provided with filler and adds the inlet capping, and generally speaking, filler adds the inlet capping closes, and prevents that extraneous dust etc. from entering and biogas escapes.When need add the immobilized microorganism filler, can open filler and add the inlet capping, add the immobilized microorganism filler.(7) designed 6 thief holes at the reactor outer wall, can gather the sewage sample at different depths place easily, so that in time understand the operation conditions of reactor.In addition, rising pipe and thief hole are respectively equipped with filter screen, and purpose is in order to prevent the loss of immobilized microorganism filler.(8) rising pipe is designed to the U type, purpose is in order to prevent that gas from entering rising pipe, to play the effect of water seal.(9) whole reactor is a right cylinder, is convenient to waterpower and flows, thereby avoided traditional reactor to have reaction dead angle problem.
Description of drawings
Accompanying drawing is aerobic inner circulating reflux type immobilization microorganism fluidized bed structure of reactor synoptic diagram; Among the figure: inner circulating reflux pipe pillar stiffener 1, reaction zone 2, immobilized microorganism filler 3, water inlet pipe 4, production well capping 5, U type pipe 6, settling region 7, valve 8, thief hole 9, the first funnel-form baffle plate 10, the second funnel-form baffle plate 11, inner circulating reflux pipe 12, reflector 13, supporting tube 14, water distributor 15, negative area 16, sludge bucket 17, first stopping valve 18, shore pipe 19, rising pipe 20, liquid spinner-type flowmeter 21, second stopping valve 22, go out water tank 23, inlet pipe 24, water tank inlet 25, water pump 26, micro-pore aeration machine 27.
Embodiment
Emphasis of the present invention has been considered following some factor.1) insufficient height height in settling region in the reactor, the solid-liquid mixed solution was fallen short of in the settling region residence time, cause sedimentation effect not good, be unfavorable for Solid-Liquid Separation, and when utilizing the immobilized microorganism filler to dispose of sewage, the immobilized microorganism filler easily runs off with current under the situation of settling region insufficient height.Therefore, this DESIGN OF REACTOR has suitably strengthened the settling region height, has both helped Solid-Liquid Separation, can effectively prevent the loss of immobilized microorganism filler again.2) backflow of general reactor must connect a reflux outside reactor, and the employing of reflux can cause the one-piece construction of reaction unit compact inadequately, and power need be provided, and the access of return line also can make current inequality in the reactor, and reaction is unstable.Therefore, the inner circulating reflux type structure has been adopted in this design, has both improved treatment effect, has avoided power consumption again.3) general reactor adopts plastic filler, biofilm is easy, but flowing property is bad, adopt homemade bamboo charcoal immobilized microorganism filler bead in this design, control bamboo charcoal and microbial numbers, both bring into play the absorption property of bamboo charcoal, utilized the degradation function of microorganism again, and can improve the current kenel.4) in the general anerobic sowage treating processes, ammonia-N removal rate is not high, and the water outlet nitrogen content is difficult to up to standard.Therefore, adopted the aerator micro-pore aeration in this design, purpose is under the situation of economical rationality, constructs aerobic reaction environment, thereby improves the processing efficiency of reactor.And if the aerator intermittent operation, can also form aerobic and anaerobism alternative reaction environment.5) the general reactor triphase separator of considering circular reactor than rectangle and square reactor complexity many, so normal rectangle or square reactor of adopting, but can cause the structure of reactor stable inadequately like this, the reaction dead angle occur, cause current kenel shakiness at regional area.Therefore, in this design, reactor adopts circular configuration, improves the current kenel, avoids reacting the dead angle.6) seldom consider the subsequent sampling problem during general reactor design, cause relatively difficulty of sampling, and can not collect the sample at different depths place in the reactor that the degree of treatment of sewage in the reactor is in time understood in inconvenience.Therefore, in this design, on reactor wall, evenly be provided with six thief holes, can gather the sewage sample at different depths place easily, be convenient in time understand the sewage disposal situation.
As shown in drawings, the aerobic inner circulating reflux type immobilization microorganism fluidized bed reacting appliance device body that responds, reactor body is provided with settling region 7 from top to bottom successively, reaction zone 2 and negative area 16,16 bottoms, negative area are provided with sludge bucket 17, sludge bucket 17 tops are provided with water distributor 15, water distributor 15 joins by water inlet pipe 4 and water pump 26, water pump 26 is placed in the water tank inlet 25, water distributor is provided with and supports aeration tube 14, support aeration tube 14 and inlet pipe 24, micro-pore aeration machine 27 joins, support the aeration tube upper end and be provided with reflector 13, be provided with immobilized microorganism filler 3 and inner circulating reflux pipe 12 in the reaction zone 2, inner circulating reflux pipe 12 joins by inner circulating reflux pipe pillar stiffener 1 and reactor body, inner circulating reflux pipe 12 upper ends are provided with the second funnel-form baffle plate 11, the second funnel-form baffle plate, 11 tops are provided with the first funnel-form baffle plate 10, reactor body sludge bucket 17 bottoms and first stopping valve 18, shore pipe 19 joins, the reactor body outer wall is provided with a plurality of thief holes 9, and reactor body top is by U type pipe 6 and rising pipe 20, liquid spinner-type flowmeter 21, second stopping valve 22 and go out water tank 25 and join.Described immobilized microorganism filler 3 is a bamboo charcoal immobilization aerobic microbiological filler, and its material grain is 3～8mm.The aspect ratio of settling region 7, reaction zone 2 and negative area 16 is: 36:54:31～40:54:31.The first funnel-form baffle plate 10 is connected angle with the reactor body wall be 45 °～60 °, the long 100～122mm of bus, and the first funnel-form baffle plate 10 is 120 °～135 ° with inner circulating reflux pipe 12 angles, bus length is 50～75mm.The mouth of pipe of rising pipe 20, thief hole 9 is provided with filter screen, and the filter screen aperture is 1～5mm.The tube wall that supports aeration tube 14 is provided with the equally distributed micropore of four rows, and the aperture is 1～3mm, the aperture space 5～8mm among each row.Thief hole 9 is 6 thief holes, and the thief hole of foot is apart from reaction zone bottom 160～180mm, six thief hole space 140～160mm, thief hole diameter 10～30mm.
Aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor is on the basis of inner circulating reflux type immobilization microorganism fluidized bed reactor, reactor is carried out micro-pore aeration, constitute aerobic environment, being beneficial to aerobic microbiological immobilization filler reacts therein, in conjunction with himself characteristic, cast out vapor pipe simultaneously.The aerator of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor comprises aeration tube, inlet pipe and the micro-pore aeration machine of supporting.Supporting aeration tube vertically stands between reflector and the water distributor, the advantage of comparing horizontal support aeration tube is to be difficult for by sludge blockage solarization air cap, conserve space, minimizing resistance, and owing to support the bottom centre that aeration tube is positioned at reactor, so aeration is more even.
Mud is the inevitable outcome of microorganism treating sewage, so sludge drainage system aims at sedimentation mud and design, and it is made up of sludge bucket, shore pipe and stopping valve.The design of sludge bucket is main, and parameters such as the flooding quantity of appropriate design, sludge yield coefficient, moisture percentage in sewage sludge calculate sludge yield according to the character of disposing of sewage, thereby determine the volume and the sludge discharging period of sludge bucket.Because the effect of micro-pore aeration machine is aerobic environment in the reactor, do not produce anaerob gas, so aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor head perforate does not need gas gathering system.
Be provided with water tank inlet in the inlet and outlet system, its volume is in 1.2～1.5 times of reactor volume, so the design water tank inlet is of a size of 500mm * 400mm * 500mm～560mm * 400mm * 500mm, built-in water pump water inlet, water inlet pipe adopts 20～50mmPVC pipe, water distributor is that caliber is the cruciform water distributor of 15～30mm, is beneficial to water distribution uniformity, has a 20～50mmPVC who is used for the supporting reflex plate to manage in the middle of the water distributor.Effluent adopting overflow water outlet, rising pipe connects stopping valve and liquid spinner-type flowmeter successively, the control aquifer yield, and water outlet flows into out water tank, its volume is designed water tank and is of a size of 500mm * 400mm * 500mm～560mm * 400mm * 500mm in 1.2～1.5 times of reactor volume.
The core of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor is the inner circulating reflux system, inner circulating reflux pipe range 300～350mm, diameter 75～100mm, the long 50～75mm of the funnel-form baffle plate bus of upper end, bus and inner circulating reflux pipe bus angle are 120～135 °.The inner circulating reflux pipe fixedly be by three in cylindrical reactor, be in 120 ° of uniform distribution, with inner circulating reflux pipe bus angle be 45 °～60 °, the pillar stiffener of material identical with reactor body (for thickening synthetic glass).Wherein, the point of suppon of upper end is in funnel-form plate washer and inner circulating reflux pipe intersection, and the point of suppon of lower end is in hydraucone bottom, inner circulating reflux pipe bottom.
Specify as follows:
1) preparation of immobilized microorganism filler: gac and microbial strains mixing and absorption certain hour, in certain density PVA, add a spot of extra large bath acid sodium, then above-mentioned two kinds of solution are mixed back splashing into dropper and contain certain density CaCl
2Boric acid solution (boric acid concentration 4%, regulate pH=6.7) in, the crosslinked certain hour of immobilization at a certain temperature takes out immobilization filler bead, washes 2～3 times with deionized water.Thereby obtained immobilized microorganism filler bead.
2) packing into of immobilized microorganism filler: before disposing of sewage,, open the capping of reactor head production well earlier, the immobilized microorganism filler is packed in the reactor for aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor.By measuring every physical behavior of immobilized microorganism filler, calculate the minimum ascending current flow velocity that the immobilized microorganism filler of sening as an envoy to just in time is suspended state; Open water inlet pipe stopping valve and micro-pore aeration machine switch, making the aperture is that the four manifold assemblies formula water distributors of 15～30mm begin water distribution uniformity, supports aeration tube and begins air feed, regulates flow velocity to being slightly larger than this minimum ascending current flow velocity; The immobilized microorganism filler reaches suitable density degree in reactor, and flow stable after, make that the immobilized microorganism filler just is in fluidized state in the reactor.
3) water sample monitoring: after reactor moves for some time, by thief hole sampling successively from top to bottom, Pollutant levels to each thief hole water sample detect, whether dosage and the sewage hydraulic detention time of analyzing the immobilized microorganism filler be reasonable, if the ammonia nitrogen concentration of water outlet water sample and COD concentration value are undesirable, then should consider to continue to increase the dosage of immobilized microorganism filler, adjust hydraulic detention time simultaneously, till water outlet meets the requirements.After reactor moves longer for some time, also tackling the water outlet water sample detects, because the immobilized microorganism filler can part run off in reaction process, simultaneously, because metabolism and the mutual extrusion effect of filler in fluidized-bed of microorganism in the immobilized microorganism filler, part can be broken, so reactor is after longer for some time of operation, if ammonia nitrogen concentration and COD concentration value are higher in the water outlet water sample, then need the additional immobilized microorganism filler that adds in reactor, to guarantee sewage treatment effect.
4) release of reactor head gas: reactor head has aperture, need open the production well capping of reactor upper end, in time discharges gas, prevents gas build, influences water outlet.Simultaneously, the top aperture also is convenient to add the immobilized microorganism filler in reactor.
5) discharge of mud: according to design, regularly mud in the sludge bucket is discharged, concrete grammar is to close inlet valve and micro-pore aeration machine earlier, stop to reactor water inlet and aeration, open the reactor top filler and add the inlet capping, open the stopping valve of shore pipe then, utilize action of gravity that mud in the sludge bucket is discharged.But should note during operation observing, control spoil disposal speed tries not the immobilized microorganism filler is discharged reactor with mud, causes the unnecessary loss of immobilized microorganism filler.
6) micro-pore aeration: the microorganism in the immobilized microorganism filler is an aerobic microbiological, so need reactor is carried out micro-pore aeration, the structure aerobic environment is beneficial to bring into play the Degradation of microorganism.Because the reflector in the aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor is to be the pvc pipe fixed of 20～50mm with a diameter, for making structure of reactor compact, and the saving space.So when considering aeration, make full use of this supporting tube, lay solarization air cap thereon, make it become the support aeration tube, and this design have difficult by sludge blockage and gas distribution advantage of uniform than accumbency type aeration tube.
Claims (6)
1. aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor, it is characterized in that, it has reactor body, reactor body is provided with settling region (7) from top to bottom successively, reaction zone (2) and negative area (16), bottom, negative area (16) is provided with sludge bucket (17), sludge bucket (17) top is provided with water distributor (15), water distributor (15) joins by water inlet pipe (4) and water pump (26), water pump (26) is placed in the water tank inlet (25), water distributor is provided with and supports aeration tube (14), support aeration tube (14) and inlet pipe (24), micro-pore aeration machine (27) joins, support the aeration tube upper end and be provided with reflector (13), be provided with immobilized microorganism filler (3) and inner circulating reflux pipe (12) in the reaction zone (2), inner circulating reflux pipe (12) joins by inner circulating reflux pipe pillar stiffener (1) and reactor body, inner circulating reflux pipe (12) upper end is provided with the second funnel-form baffle plate (11), the second funnel-form baffle plate (11) top is provided with the first funnel-form baffle plate (10), reactor body sludge bucket (17) bottom and first stopping valve (18), shore pipe (19) joins, the reactor body outer wall is provided with a plurality of thief holes (9), reactor body top is by U type pipe (6) and rising pipe (20), liquid spinner-type flowmeter (21), second stopping valve (22) and go out water tank (25) and join, the tube wall that supports aeration tube (14) is provided with the equally distributed micropore of four rows, the aperture is 1～3mm, the aperture space 5～8mm among each row.
2. a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor according to claim 1 is characterized in that, described immobilized microorganism filler (3) is a bamboo charcoal immobilization aerobic microbiological filler, and its material grain is 3～8mm.
3. a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor according to claim 1 is characterized in that, the aspect ratio of described settling region (7), reaction zone (2) and negative area (16) is: 36:54:31～40:54:31.
4. a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor according to claim 1, it is characterized in that, the described first funnel-form baffle plate (10) is connected angle with the reactor body wall be 45 °～60 °, long 100～the 122mm of bus, with inner circulating reflux pipe (12) angle be 120 °～135 °, bus length is 50～75mm.
5. a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor according to claim 1 is characterized in that, the mouth of pipe of described rising pipe (20), thief hole (9) is provided with filter screen, and the filter screen aperture is 1～5mm.
6. a kind of aerobic inner circulating reflux type immobilization microorganism fluidized bed reactor according to claim 1, it is characterized in that, described thief hole (9) is 6 thief holes, the thief hole of foot is apart from reaction zone bottom 160～180mm, six thief hole space 140～160mm, thief hole diameter 10～30mm.
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