CN205061694U - Good oxygen of aeration and oxygen biomembrane nitration device - Google Patents
Good oxygen of aeration and oxygen biomembrane nitration device Download PDFInfo
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- CN205061694U CN205061694U CN201520747095.3U CN201520747095U CN205061694U CN 205061694 U CN205061694 U CN 205061694U CN 201520747095 U CN201520747095 U CN 201520747095U CN 205061694 U CN205061694 U CN 205061694U
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Abstract
The utility model discloses a good oxygen of aeration and oxygen biomembrane nitration device, including facultative anaerobic pond, nitration tower and foam processing apparatus. Be equipped with water -locator, aeration equipment, biofilm carrier packing layer and back flow in the body of the tower of this nitration tower, the outlet of this water -locator and body of the tower is located the vertical both sides of packing layer respectively, and this back flow runs through and passes the packing layer. The organic matter to be in order having formed oxygen mud during contact of this packing layer and aeration bubble and reaction, the biomembrane of packing layer were absorbed oxygen and is nitrified sewage, and this good oxygen mud immerses the tower bottom in order clearing up out through the back flow, dissolved the oxygen that has in the bubble in the sewage with realization oxidation. The aeration bubble receives packing layer shear effect contact, adsorb suspended solid in the sewage, and the suspended solid emerges in order to form the foam along with the bubble rising, collects the foam and handles through foam processing apparatus. Sewage flows back to facultative anaerobic pond hold concurrently oxygen reaction and anti - nitration through the outlet to ammonia nitrogen and COD in the degradation sewage.
Description
Technical field
The utility model relates to the aerobic double oxygen microbial film nitration reaction device of a kind of aeration.
Background technology
In the technique that biological method is disposed of sewage, aerobic aeration is the most frequently used and the most extensive and a kind of effective method.Due to the reason of the method Historic Evolution development, what adopt in actual applications is directly in Aerobic Pond, directly install the method that aerating apparatus carries out aeration oxygen replenishing always, in this aeration tank, obtain sufficient aeration oxygen replenishing, make the dissolved oxygen in sewage rise to the desired value (2mg/L) of processing requirement.Then allowing sewage flow into another anoxic pond (oxygen compatibility pool) makes its dissolved oxygen reduce because of dilution, is in a kind of anoxic condition.By the nitrification of aerobic bacteria, the organism in sewage be converted into aerobic sludge form and remove, degrading ammonia nitrogen in sewage by the denitrifying alternating action of the nitrification of aerobic bacteria and anerobe (bacterial growth-nitrated-denitrification-bacterium nitre die-bacterial growth).This technological process has to be arranged to A/O and also to have and be arranged to A2/O, i.e. anoxic/aerobic, the process of anoxic, anoxic/aerobic.The COD of the sewage optionally processed, ammonia and nitrogen components ratio and determining.Need the COD that degrades, then based on aerobic nitrification reaction; Need then nitrated based on double oxygen, the anti-nitration reaction of degradation of ammonia nitrogen.
The major defect that traditional and existing method exists is:
1, direct aeration in pond, the a large amount of foams produced in aeration process cannot be removed or again return in pond or overflow and cause secondary pollution to environment, a large amount of suspended substances gets back to again (COD) in sewage simultaneously, effectively do not removed, both (aeration process can produce a large amount of foam naturally to have wasted large energy, and do not add removal and treat as waste), have impact on environment again.
2, a large amount of mud produced in aeration process easily because of sedimentation blocking aeration head solarization air cap and aeration head was lost efficacy.
3, aerating apparatus (aerated conduit and aeration head) is arranged on middle part or the bottom in pond, is difficult to carry out keeping in repair and safeguard that (will empty whole pond sewage during maintenance, emptying sewage needs standby pool and has enough to meet the need.General sewage works neither possesses).
4, the distance of dried up of aeration head is restricted, and makes oxygen conduction efficiency not high.Because the construction cost in pond becomes geometricprogression direct ratio with the degree of depth, the intensification of the degree of depth in pond can increase the construction cost in pond greatly, so generally its degree of depth is between 3 meters-4 meters, and aeration head is arranged on about 2.5 meters.The distance that air rises from sewage shorter then oxygen conduction efficiency is lower, if reduce the position of aeration head to increase its degree of depth, then certainly will increase the pressure of water and must increase the power of Aeration fan.And the method for oxygenation effect is reached by pool surface area, energy consumption can be improved greatly.
5, owing to directly utilizing sewage lagoon to carry out aeration (i.e. aeration tank), the capacity of sewage lagoon is increased exponentially.Add overall cost of investment and floor space.The difficulty of enforcement is brought to the occasion that land area is in short supply.
Utility model content
The utility model provides the aerobic double oxygen microbial film nitration reaction device of a kind of aeration, which overcomes the deficiency existing for aerobic aeration device in background technology.
The technical scheme adopted that the utility model solves its technical problem is:
The aerobic double oxygen microbial film nitration reaction device of aeration, comprises oxygen compatibility pool, nitration reaction tower and foam treatment device; This nitration reaction tower, comprise tower body, the return line being provided with the water distributor for the sewage that distributes, the aerating apparatus for generation of aeration bubbles, biofilm carrier packing layer in this tower body and sinking for mud, the water port of this water distributor and tower body lays respectively at the vertical both sides of packing layer, and this return line runs through through packing layer; In this oxygen compatibility pool, sewage to be distributed sewage by water distributor, and this effluent stream is through packing layer and can discharge from water port, and this water port connects oxygen compatibility pool, and this foam treatment device connects tower body top.
Among one embodiment: establish mud discharging mouth bottom this tower body, this mud discharging mouth is connected to shore pipe, and this shore pipe is provided with opening-closing valve.
Among one embodiment: this tower body top is set to foam collection structure, the section area of this foam collection structure is gradually gone up gradually little and is up-small and down-big pyramidal structure, and the top of this pyramidal structure establishes opening to form row's bubble mouth, and this foam treatment device connects row's bubble mouth.
Among one embodiment: the inwall be positioned under foam collection structure and on packing layer of this tower body is provided with an opening up ring groove, and this ring groove can form overflow groove; This water port is located at annular groove bottom and connects ring groove.
Among one embodiment: this water distributor and water port are arranged in the upper and lower both sides of packing layer, and water distributor is arranged at the bottom of the tower of tower body, and water port is arranged in the top of tower body.
Among one embodiment: this aerating apparatus is between packing layer and water distributor, and this aerating apparatus comprises aeration head, and aeration head comprises the cavity offering multiple pore, and this cavity connects air pump by tracheae, this cavity surrounds annular or multiple cavity is arranged in annular; In upper and lower projection view, water distributor is positioned at annular.
Among one embodiment: this return line upper port is stretched out on packing layer, this return line lower port is stretched out under packing layer, the axis of return line and the annular dead in line of aerating apparatus, and the diameter of return line is less than the diameter of annular, this return line lower port is positioned on aerating apparatus.
Among one embodiment: this foam treatment device comprises a row and steeps pipe, the froth breaker of the row's of connection bubble pipe and the foam dryers of a connection froth breaker; This row steeps pipe Single port and connect tower body down, and another port horizontal cross extends, and then vertically towards downward-extension; This froth breaker is horizontally disposed and pipe another port is steeped by the row of connection, and this foam dryers connects froth breaker.
Among one embodiment: be provided with aspirator pump between this water distributor and oxygen compatibility pool, by aspirator pump, the sewage in oxygen compatibility pool is delivered to water distributor.
The technical program is compared with background technology, and its tool has the following advantages:
1, water distributor, aerating apparatus, packing layer, return line are located in tower body, reaction tower integrates oxygenizement and nitration reaction forms integrated, on the one hand, volume is little, need not separately for sewage lagoon, sewage directly enters oxygen compatibility pool, on the other hand, easily realize full automatic control, make system stability Effec-tive Function.
2, easily dismounting and safeguard aerating apparatus, aeration efficiency is improved greatly.
3, return line can for mud sink, avoid mud easily because of sedimentation blocking aeration head solarization air cap and aeration head was lost efficacy; Foam treatment device ligation tower, effectively can absorb and defoam, and avoids foam again return in pond or overflow.
4, reaction tower is integrated, can realize the intensification of submersion depth easily, and can not strengthen consumed energy in direct ratioly.Deepened the depth of water and utilize biofilm carrier filler be used for improve oxygen conduction efficiency, extend air water dissolution time, extend microbial film and oxygen duration of contact, energy consumption can be reduced greatly and improve oxygen conduction efficiency, minimizing (land area takies) cost of floor space.
5, the effect of the application of integrated tower aerating device and the huge specific surface area of the interior filling bed of material, makes aerating system need not take a bulky aeration tank, thus greatly reduces volume and the input cost of aerobic oxygen compatibility pool.Can by improving height and increasing the effect that the volume of filler reach big area aeration tank, thus traditional aeration tank replace by this nitration reaction tower, and only need build oxygen compatibility pool.Sewage is aerobic reaction in this reaction tower, after sewage backflow to oxygen compatibility pool, because the dissolution of contaminated water oxygen of diluting effect oxygen compatibility pool reduces rapidly, as maintained the 0.2mg/L up and down index of a double oxygen anti-nitration reaction the most applicable (can calculate as required and control), as long as and control the parameter of this nitrator, as dissolved oxygen (2mg/L ± 0.3), just can control the index of correlation of oxygen compatibility pool easily, for Systematical control brings great automatization convenient.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 depicts the structural framing schematic diagram of reaction unit.
Fig. 2 depicts the concrete structure schematic diagram of reaction unit.
Embodiment
Please refer to Fig. 1 and Fig. 2, the aerobic double oxygen microbial film nitration reaction device of aeration, comprises oxygen compatibility pool 10, nitration reaction tower 20 and foam treatment device 30.
This nitration reaction tower 20, comprises tower body 21, and this tower body 21 establishes water port 216.Establish mud discharging mouth bottom this tower body 21, this mud discharging mouth connects shore pipe 211, and opening-closing valve 212 established by this shore pipe 211.This tower body 21 top is set to foam collection structure 213, and the section area of this foam collection structure 213 is gradually gone up gradually little, and as being up-small and down-big conical structure, the top of this pyramidal structure establishes opening to form row's bubble mouth 214.Be provided with the water distributor 22 for the sewage that distributes, the aerating apparatus 23 for generation of aeration bubbles in this tower body 21, aeration bubbles can be made to be subject to the biofilm carrier packing layer 24 of shearing action and the return line 25 for mud sinking.Best, the inwall be positioned under foam collection structure 213 and on packing layer 24 of tower body 21 is provided with an opening up ring groove 215, and this ring groove 215 can form overflow groove; This water port 216 is located to connect ring groove bottom ring groove 215, to be discharged by the water in ring groove.This biofilm carrier packing layer 24 is outer preferably establishes padding support frame and filler barrier, biofilm carrier packing layer 24 to be packed in the fixed position of tower body.
The water port 216 of this water distributor 22 and tower body 21 lays respectively at the vertical both sides of packing layer 24, be arranged in the upper and lower both sides of packing layer 24 for water distributor 22 and water port 216 in the present embodiment, water distributor 22 is arranged at the bottom of the tower of tower body, water port 216 is arranged in the top of tower body, is at least to be positioned on packing layer 24.Certainly as required, water distributor 22 and water port 216 also can be arranged in upper both sides under packing layer 24.
This aerating apparatus 23 is between packing layer 24 and water distributor 22.Best, this aerating apparatus 23 comprises aeration head, and aeration head comprises the cavity offering multiple pore, this cavity connects air pump 232 by tracheae 231, gas to be entered in tower body by tracheae 231, cavity, pore and produces bubble, is enclosed with gas, at least includes oxygen in gas in bubble.This cavity surrounds annular or multiple cavity is arranged in annular, makes aeration head evenly produce bubble.In upper and lower projection view, water distributor 22 is positioned at annular.This water distributor 22 connects oxygen compatibility pool 10 by water inlet pipe 221 by water suction pump 222, water suction pump 222 extracts the sewage of oxygen compatibility pool 10 and delivers to water distributor 22, this water distributor 22 is uniformly distributed sewage, this water distributor 22 is as comprised the water distributor of multiple radial ringed arranged in arrays, water distributor evenly offers posticum, water suction pump connected by water distributor, sewage enters tower body 21 by the even water outlet of the posticum of water distributor, water distributor, this effluent stream is through packing layer 24, to complete reaction and the aerobic nitrification reaction of dissolved oxygen, then discharge from water port 216.Best, this water suction pump coordinates a liquid level meter 218 to use, to avoid water suction pump suction.This packing layer is as adopted baton round, preferably hollow baton round.
This return line about 25 runs through through packing layer 24, this return line 25 upper port is stretched out on packing layer 24, this return line 25 lower port is stretched out under packing layer 24, the axis of return line 25 and the annular dead in line of aerating apparatus 23, and the diameter of return line 25 is less than the diameter of annular.This return line 25 lower port is positioned on aerating apparatus 23.
This foam treatment device 30 comprises a row and steeps the froth breaker 32 of pipe 31, connection row bubble pipe 31 and the foam dryers 33 of a connection froth breaker 32.This row steeps pipe 31 Single port and the row of conical top connecting tower body steeps mouth 214 down, and another port horizontal cross extends, and then vertically towards downward-extension; Horizontally disposed and the row's of connection bubble pipe 31 another port of this froth breaker 32, foam from vertical duction level time foam between mutually extruding realize nitre bubble.This foam dryers 33 connects froth breaker 32, is used with dried foam and removes to change into powder.When foam is bullied and is extruded pressure, can extrude water outlet, water flow in ring groove.
Among the present embodiment, water distributor 22, aerating apparatus 23, packing layer 24 and return line 25 are all located in tower body, therefore the aerobic reaction of aeration tank, nitration reaction can be integrated in a tower reactor and carry out, make sewage in integrated form nitration reaction tower, complete reaction and the aerobic nitrification reaction of dissolved oxygen.Specifically:
1, this packing layer contacts with aeration bubbles and reacts, the microbial film of packing layer absorb oxygen and nitrated dirty Organic substance in water with is formed aerobic sludge (this aerobic sludge through return line sink to tower bottom with energy cleaned go out), and sewage oxygen dissolved in sewage in bubble after nitration reaction reaches aerobic reaction requirement, realizes oxygenizement.It can produce following advantage: a, carrier can accept larger aeration and impact, and have comparatively bigger serface, can carry microbial film attachment in a large number; B, carrier also have a large amount of interstitial channels that gas complications can be allowed roundabout, the air micro-bubbles that aeration is produced extends its lift velocity in carrier, thus lengthen its residence time, the duration of contact of increasing and microbial film and sewage and contact area, improve oxygen dissolved efficiency, make gas, as air (oxygen mainly in air) obtains maximum effective utilization in reactor.
2, at the contact of shearing action bubble, suspended substance in absorption effluent, suspended substance to rise the formation foam that emerges with bubble, collects foam and by foam treatment device process.It can produce following advantage: a, because of carrier shearing action, then reduce bobble rise velocity, makes bubble slowly increase, emerges again, form a large amount of foam in reactor head space can adsorb a large amount of suspended substances; B, this foam are under aeration head endlessly air feed, make the air mineralization pressure entering reactor, force foam to be extruded along row's bubble mouth and row's bubble pipe, and through froth breaker and drying installation, a large amount of suspended substances be transformed into powder and remove, thus significantly reduce the COD in sewage; C, due to the application of integrated tower aerating device and the use of filler, the invalid side reaction of aeration is made to be transformed into effective positive reaction, namely a large amount of foams is produced by the shearing action of filler and integrated tower reactor can make the easy natural removal of foam, thus the suspended substance greatly reduced in sewage and COD, according to example, energy consumption 50% can be reduced and raise the efficiency 50% in other words.
Separately establish water shoot 217, water port 216 is connected in this water shoot 217 one end, and the other end connects oxygen compatibility pool 10, and this sewage flows back to oxygen compatibility pool 10 carry out double oxygen reaction, anti-nitration reaction, with the ammonia nitrogen in degradation of sewage and COD through water port 216, water shoot 21.
Best, be also provided with automatic control system 40, it is as being PLC, and automatic control system 40 signal connects air pump, aspirator pump.As required, separately can establish dissolved oxygen sensor, this dissolved oxygen sensor is located at oxygen compatibility pool 10 or/and water port 216, or oxygen compatibility pool 10 is or/and water shoot 217 end port.Wherein: 1, automatic control system 40 controls the dissolved oxygen parameter of reaction tower by the power controlling aeration air pump; 2, height and volume by designing reaction tower reach the object of saving energy consumption.Effective affecting acreage is controlled, to reach the object reducing volume and raise the efficiency by the loading level of biofilm carrier filler in reaction tower.Aeration rate and aeration time is controlled by the oxygen level (dissolved oxygen parameter) of reaction tower and oxygen compatibility pool.Dissolved oxygen and water yield index input two-position controller (PLC) are controlled whole system steady running to reach the object of automatization.This reaction controlling and dissolved oxygen parameter, can carry out design implementation according to the volume size of the size of reaction tower and oxygen compatibility pool, and easily realize Automated condtrol.The design parameter of a specific embodiment of the present utility model as:
Nitration reaction tower parameter: highly (degree of depth)>=2.5m; Volume>=1m
3; Floorage>=2.5m
2; Shape: post, square column, rectangular column; Biofilm packing parameter: the specific surface area>=150m of filler
2/ m
3; The specific surface of filler and the relation>=100m of capacity
2/ m
3; Proportion>=the 0.5g/cm of filler
3and≤1.2g/cm
3; Granularity>=5000 of filler/m
3; The parameter of air quantity: wind supply quantity>=100m
3/ hm
3; Micro porous aeration head quantity: 0.5/m
3; Dissolved oxygen parameter: dissolved oxygen content 2mg/L ± 0.3 in reaction tower; Dissolved oxygen content 0.2mg/L ± 0.03 in oxygen compatibility pool; Water inlet water distribution point quantity>=4; Cloth water spot distribution mode: uniform plane distributes.
The aerobic double oxygen microbial film nitration reaction method of aeration, comprising:
A. sewage completes aerobic nitrification reaction in reaction tower, and aerobic nitrification reaction comprises nitrification and oxygenizement.Wherein: water suction pump sucks sewage from oxygen compatibility pool, again sewage is delivered to water distributor and through the uniform sewage of water distributor, sewage flows into reaction tower bottom reaction tower, flow through packing layer, the micro-bubble that sewage and aeration head input in packing layer fully contacts and reacts, the microbial film of packing layer absorb oxygen and organism in nitrated sewage to form aerobic sludge (aerobic bacteria nitre die after product).The sinking return line of this mud through being located at reaction tower centre sinks to tower bottom, regularly can clean out mud from mud discharging mouth.And sewage oxygen dissolved in sewage in bubble after nitration reaction reaches aerobic reaction requirement, realizes oxygenizement.
B. sewage completes the efficient product bubble and the work of row's bubble of removing suspended substance in reaction tower.Wherein: with the suspended substance bump contact in sewage under the shearing action of micro-bubble at packing layer of aeration head input, suspended substance is adsorbed on bubble, suspended substance rises with bubble and emerges and form a large amount of foams, foam concentrations is in nitration reaction top of tower pyramidal structure, and the foam of the row's of being collected in bubble mouth is depressed into row's bubble pipe by the pressure of the air inputted by aeration head.Foam is discharged to froth breaker through row's bubble pipe, then is used through the drying of foam mat drying device to change into powder and removes.
C. in oxygen compatibility pool, complete the reaction of double oxygen, anti-nitration reaction and sludge settling after sewage backflow enters oxygen compatibility pool.Wherein: sewage is through the aerobic reaction in reaction tower with after absorbing dissolved oxygen, dissolved oxygen reaches aerobic reaction requirement, when it passes back into oxygen compatibility pool from return line, the molten amount of oxygen is diluted because oxygen compatibility pool volume is greater than reaction tower, therefore denitrification and the reaction of double oxygen can be carried out in pond, with the ammonia nitrogen in degradation of sewage and COD, effectively to remove ammonia nitrogen and COD, and by sludge settling precipitating sludge.After oxygen compatibility pool anti-nitration reaction, sewage is again inhaled in reaction tower and processes, and so moves in circles and carries out, and to play the continuous circulation nitration reaction of aerobic-anoxic, reaches the effect removing COD and ammonia nitrogen.
The above, be only the utility model preferred embodiment, therefore the scope that the utility model implements can not be limited according to this, the equivalence namely done according to the utility model the scope of the claims and description change with modify, all should still belong in scope that the utility model contains.
Claims (9)
1. the aerobic double oxygen microbial film nitration reaction device of aeration, is characterized in that: comprise oxygen compatibility pool, nitration reaction tower and foam treatment device; This nitration reaction tower, comprise tower body, the return line being provided with the water distributor for the sewage that distributes, the aerating apparatus for generation of aeration bubbles, biofilm carrier packing layer in this tower body and sinking for mud, the water port of this water distributor and tower body lays respectively at the vertical both sides of packing layer, and this return line runs through through packing layer; In this oxygen compatibility pool, sewage to be distributed sewage by water distributor, and this effluent stream is through packing layer and can discharge from water port, and this water port connects oxygen compatibility pool, and this foam treatment device connects tower body top.
2. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, it is characterized in that: establish mud discharging mouth bottom this tower body, this mud discharging mouth is connected to shore pipe, and this shore pipe is provided with opening-closing valve.
3. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, it is characterized in that: this tower body top is set to foam collection structure, the section area of this foam collection structure is gradually gone up gradually little and is up-small and down-big pyramidal structure, the top of this pyramidal structure establishes opening to form row's bubble mouth, and this foam treatment device connects row's bubble mouth.
4. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 3, is characterized in that: the inwall be positioned under foam collection structure and on packing layer of this tower body is provided with an opening up ring groove, and this ring groove can form overflow groove; This water port is located at annular groove bottom and connects ring groove.
5. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, is characterized in that: this water distributor and water port are arranged in the upper and lower both sides of packing layer, and water distributor is arranged at the bottom of the tower of tower body, and water port is arranged in the top of tower body.
6. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, it is characterized in that: this aerating apparatus is between packing layer and water distributor, this aerating apparatus comprises aeration head, aeration head comprises the cavity offering multiple pore, this cavity connects air pump by tracheae, and this cavity surrounds annular or multiple cavity is arranged in annular; In upper and lower projection view, water distributor is positioned at annular.
7. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 6, it is characterized in that: this return line upper port is stretched out on packing layer, this return line lower port is stretched out under packing layer, the axis of return line and the annular dead in line of aerating apparatus, and the diameter of return line is less than the diameter of annular, this return line lower port is positioned on aerating apparatus.
8. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, is characterized in that: this foam treatment device comprises a row and steeps pipe, the froth breaker of the row's of connection bubble pipe and the foam dryers of a connection froth breaker; This row steeps pipe Single port and connect tower body down, and another port horizontal cross extends, and then vertically towards downward-extension; This froth breaker is horizontally disposed and pipe another port is steeped by the row of connection, and this foam dryers connects froth breaker.
9. the aerobic double oxygen microbial film nitration reaction device of aeration according to claim 1, is characterized in that: be provided with aspirator pump between this water distributor and oxygen compatibility pool, by aspirator pump, the sewage in oxygen compatibility pool is delivered to water distributor.
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| CN201520747095.3U CN205061694U (en) | 2015-09-24 | 2015-09-24 | Good oxygen of aeration and oxygen biomembrane nitration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461055A (en) * | 2015-09-24 | 2016-04-06 | 福建方明环保科技股份有限公司 | Aeration aerobic facultative biomembrane digestion reaction apparatus and method thereof |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461055A (en) * | 2015-09-24 | 2016-04-06 | 福建方明环保科技股份有限公司 | Aeration aerobic facultative biomembrane digestion reaction apparatus and method thereof |
| CN105461055B (en) * | 2015-09-24 | 2017-12-19 | 福建方明环保科技股份有限公司 | It is aerated aerobic and oxygen biomembrane digestion reaction device and method |
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