CN201305501Y - Biological fluidized bed reactor for water treatment - Google Patents
Biological fluidized bed reactor for water treatment Download PDFInfo
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- CN201305501Y CN201305501Y CNU2008202154875U CN200820215487U CN201305501Y CN 201305501 Y CN201305501 Y CN 201305501Y CN U2008202154875 U CNU2008202154875 U CN U2008202154875U CN 200820215487 U CN200820215487 U CN 200820215487U CN 201305501 Y CN201305501 Y CN 201305501Y
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- water treatment
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Abstract
The utility model relates to an improved biological fluidized bed reactor for water treatment. The improved biological fluidized bed reactor is characterized in that the specific weight of the fluidized biological carrier is similar to that of the treated liquid, therefore fluidized short plastic hollow circular pipes can be suspended, and the apertures of a biological carrier separator is smaller than that of the hollow-wall hollow table body of the carrier. Compared with the prior art, the improved biological fluidized bed reactor has the advantages that the carrier is nontoxic, the film forming performance is good, the specific surface area is large, the biomass is large, the wear resistant property is good, the service life is long, the specific weight is light, the suspension and fluidization properties are good, and the energy consumption for starting and operation is low; the carrier separator has simple structure and low manufacture cost, and can be made of antirot substance such as plastics, the operator can conveniently enter the fluidized bed below from the hollow table body for maintenance, the oblique reflection function can enable the fluidization carrier to return to participate in the fluidization, therefore, the aggregation of the carrier on the carrier stopping surface of the separator is not easy to happen, and the treatment effect of the fluidized bed can be guaranteed.
Description
Technical field
Utility model be to water treatment with the improvement of biological fluidized-bed reactor, it is simple in structure to relate in particular to a kind of carrier separator, convenient to the fluidized-bed maintenance, fluidisation bio-carrier biofilm is good, the biological fluidized-bed reactor of long service life.
Background technology
Biological fluidized-bed reactor, more employing fine particle type carrier, for example haydite, activated carbon, rubber grain are as the fluidisation bio-carrier, as disclosed biological fluidized-bed reactors such as Chinese patent CN1460651, CN1903743, CN200974790, CN201031172, adopting rubber grain is the fluidisation bio-carrier.Haydite, activity carbon carrier exist than great, and wear resisting property is poor, the biofilm difficulty, and startup, operation energy consumption height, thereby substituted by the rubber grain carrier gradually.The rubber grain carrier is as described in Chinese patent CN1155520, CN1339407, the CN1478735 etc., substantially all be that employing is the main raw material manufacturing with the waste rubber, because of containing in the waste rubber to the microorganism growth toxic and harmful substance, cause examples of such carriers to cause easily that in practical application early stage (about 1 year) microorganism is poisoned to death, thereby the carrier attached biomass is little.For this reason, adopt usually the rubber grain carrier is handled through high temperature steaming, with minimizing or reduction toxic substance, but it can increase cost again greatly, will improve about about ten times through pyroprocessing carrier cost.Secondly, the rubber grain carrier also exists specific surface area little, the attached microbial ability, and the caducous deficiency of microbial film also is another reason that causes the carrier surface biomass few.Above-mentioned biomass reduces all can influence the water treatment effect.Besides, rubber grain carrier proportion is relatively large, minimumly also will reach 1.05g/mm
3, behind the attached microbial, the proportion increase causes the fluidisation energy consumption higher relatively, causes the running cost height.In addition, rubber grain carrier wear resistance is not good, particle diameter 5-8mm carrier moves through 1-2, most of wearing and tearing become the 1-2mm fine particle, some in addition become more small particle, it is serious not only to cause carrier to lose with current, the carrier magnitude of recruitment is big, and carrier reduce make specific surface area further reduce, and then cause the minimizing of biomass, influence treatment effect equally.The defective of above-mentioned rubber grain carrier fails effectively to be solved all the time.
Existing fluidized bed bio carrier separator for example adopts all that physics such as grid, grizzly bar interception mode runs off with water outlet to stop carrier, and its structure is the plane and blocks the type of carrying.The plane is blocked and is carried a type carrier separator, and for example CN201031175 fluidized-bed carrier separator of applicant's application, and the described organism fluidization reactor bio-carrier separator of CN1453224 is to adopt and blocks the mode of carrying and block a year carrier, and it is run off with water outlet.Yet in actual motion, because of carrier proportion and water difference minimum, thereby can cause the fluidisation carrier to gather on the intercepting and separating device surface, through operation after a while, most of carrier can be collected at separator interception internal surface, and do not participate in ciculation fluidized, thereby the inappropriate fluidisation carrier amount that reduced also can reduce the fluidized bed processing effect; Secondly granule type carrier particle diameter is less relatively, for example usually≤and 8mm, some is littler, runs off with water outlet for preventing carrier, bio-carrier separator is had relatively high expectations, usually adopt the multiple layer combination structure, as described above patent all adopt three layers and more than, cause the cyclone separator arrangement complexity, not only manufacturing cost is higher relatively, and separator benzene is heavy, and necessary total cross section closed reactor, is unfavorable for the maintenance to separator below fluidized-bed reactor.Below fluidized-bed maintenance needs to remove separator, need re-assembly separator again after the maintenance, and dismounting separator workload is very huge, thereby actual fluidized-bed is not overhauled substantially, thereby causes treatment effect to reduce.
Chinese patent CN101244884 discloses a kind of employing magnetic bio-carrier and magnetic separation technique method, adopts density 1.0～1.4g/cm
3Particle diameter is the magnetic bio-carrier of 0.043～0.315mm, realize mud-water separation by forming mud through magnetic separation technique, put it into then in the carrier demoulding separator, realize separating of mud and magnetic carrier, again magnetic carrier is reentered in the reactor, realizes the recovery and reuse of magnetic carrier.This method has increased carrier separable programming and difficulty especially, need tripping device be set separately, and auxiliary facility is many, the cost height, and lack actual application value.
Above-mentioned defective is prevalent in the biological fluidized bed of various structures, and because the existence of above-mentioned many disadvantages, after causing fluidized-bed actual motion for some time, processing efficiency and effect can occur descends, serious may causing has only sewage in fluidisation in the fluidized-bed reactor, lose the fluidized bed bio function vector.Therefore still having is worth improved place.
The utility model content
The utility model purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of bio-carrier attached microbial good, and biomass is big, and cyclone separator arrangement is simple, and anti-vector aggregation is good, and the water treatment biological fluidized-bed reactor of convenient below fluidized-bed maintenance.
The utility model purpose realizes, main improvement one is that the fluidisation bio-carrier adopts proportion and processed liquid specific gravity is similar, the fluidizing plastics ring-type that can suspend short tube, the 2nd, carrier separator adopts the hollow out wall hollow positive stage body of hole less than carrier, thereby overcome above-mentioned the deficiencies in the prior art, realize the utility model order.Specifically, utility model water treatment biological fluidized-bed reactor, comprise the biological fluidized bed reaction tower, the bio-carrier of built-in energy fluidizing, reaction tower top bio-carrier separator, it is characterized in that the fluidizing bio-carrier is that proportion and processed liquid specific gravity are approaching, the fluidizing plastic hollow ring-type that can suspend short tube, the bio-carrier separator positive stage body of hollow that to be hole surround less than the hollow out wall of carrier.
The said biological fluidized bed reaction tower of utility model can be the fluid bed reacting tower of various structures in the prior art, for example two phase flow fluidized-bed reactor, three-phase internal recycle or three-phase external circulation fluidized bed reactor.Internal Circulating Fluidized Bed, inner core can be the monotubular structures, also can be shell and tube or honeycomb construction.The reaction tower body can be structures, also can be mill work, for example steel cylinder.
Carrier proportion and processed liquid specific gravity are approaching, basic identical with the prior art principle, mainly be to consider from helping carrier fluidisation angle processed liquid, be example with common sewage, because of there being certain fluidisation power, carrier proportion can be slightly to overweight for example 1.01-1.05g/cm of water
3, also can slightly be lighter than processed liquid specific gravity.For reducing startup, fluidisation operation power consumption, utility model better is to select proportion to be slightly less than processed liquid specific gravity, and as being example with common sewage, proportion is preferably 0.95-0.99g/cm
3Slightly be lighter than water, like this behind the carrier attached biological film, proportion slightly increases and for example increases to about 1.03-1.05g/cm
3, neither can cause carrier to be lighter than water and to float on liquid level in a large number, influence ciculation fluidized amount, can not increase the fluidisation energy consumption because of quality after the biofilm is too heavy again, this proportion fluidized suspension is good.
Plastic hollow ring-type short tube carrier, its structure can be as described in Chinese patent CN1030029, CN2583084, CN2647848, the CN201046931 etc., and is relatively large because of its volume, has inside and outside at least two attaching surfaces again simultaneously, thereby specific surface area is big, and do not contain the microorganism objectionable impurities, be easy to microbial film and adhere to, strong adhesion, wear resistance is good, the intensity height substantially can damaged and wearing and tearing in the use, have overcome the deficiency of rubber grain carrier fully.Wherein more preferably adopt as honeycomb ring texture short tube as described in the Chinese patent CN201046931, it is honeycomb dowel and suitable aspect ratio radially, make carrier when fluidisation, have the good effect of rolling, can produce cutting action, thereby improved the oxygenation utilization ratio bubble.Hollow and annular short tube carrier, its surface, outer ring is the system indentation better, this structure not only can improve the carrier specific surface area, and more helping the microbial film firm attachment, anti-demoulding is good, when carrier collides mutually, can all not come off simultaneously, help the carrier biofilm fast updating, and can improve carrier organism film carrier tape amount, to improve biological treatment effect.
The positive stage body separator of the hollow that the hollow out wall surrounds is this patent fluidized-bed carrier separator one big characteristic, has broken through conventional separator and has depended merely on the anti-carrier loss of year effect of blocking, and has proposed a kind of carrier separator of novel concept.Hollow stage body structure, be not that simple carrier separator usually only is the interception Anti-lost, its hollow out skew wall face can make vapour, liquid pass through, can make fluidisation carrier and the inclined-plane collision so far of rising again, produce reflecting effect and make continuation circulation in the carrier Returning fluid, thereby effectively avoided carrier under flush type separator interception face, to assemble, the defective that causes the carrier internal circulating load to reduce.Secondly, hollow stage body structure, the fluidized-bed tower does not bind, and can overhaul, change operation to fluidized-bed under the vacancy from stage body, has overcome existing fluidized-bed and has been difficult to the deficiency that the fluidized-bed to the below overhauls because of separator binds.The hollow out wall, its form is not limit, and such as but not limited to being grid, polygonal hole, circular port, grizzly bar shape etc., can both play same function.The stage body shape is not limit yet, and can be Rotary-table, can be the multiaspect stage body yet.Stage body wall oblique angle is preferably the 30-65 degree, is preferably the 45-65 degree, if the oblique angle is too small, then separator obviously can produce the defective of flush type separator near flush type, and carrier is difficult to circulate in whole usable reflection backwater, can cause carrier to assemble at the separator inner face, it is ciculation fluidized to influence carrier; If the oblique angle is excessive, be unfavorable for carrier collision reflection equally, can because of wall attachment effect take place, and carrier is gathered along the attached wall of face that inclines, it is ciculation fluidized also can to influence carrier.In addition, for the large section fluidization column,, can also adopt multilayer hollow out wall hollow stage body separator alternate fit up and down for reducing the separator height.The setting of separator and prior art are similar substantially, are located near the water outlet, and a kind of being preferably of utility model makes separator be the semi-immersed setting, and promptly partly not in water, part exceeds the water surface to the separator short transverse, and reflecting effect is more excellent like this.
Utility model water treatment biological fluidized-bed reactor, owing to adopt the fluidizing plastic hollow ring-type short tube carrier that can suspend, and the carrier separator positive stage body of hollow that adopts hole to surround less than the hollow out wall of carrier, have than prior art: the carrier nontoxicity, biofilm is good, and specific surface area is big, and biomass is big, wear resisting property is good, long service life, proportion is lighter, less than treatment liq, suspension and fluidisation are good, and startup and operation energy consumption are low.The positive stage body separator of hollow out wall hollow, simple in structure, low cost of manufacture, and can adopt impregnating material such as plastics to make, and it is anticorrosion to adopt metal to add in addition, being used for fluidized-bed neither binds, can conveniently enter below fluidized-bed maintenance from the hollow stage body, its inclined-plane reflex action, not only have well anti-carrier loss effect, and the fluidisation carrier makes the fluidisation carrier can return the participation fluidisation through the reflex action of inclined-plane collision, be difficult for causing carrier to block section and assemble, can guarantee the fluidized bed processing effect at separator.The utility model technical scheme, can be used for the two phase flow biological fluidized bed, also can be used for three-phase stream biological fluidized bed (comprising internal recycle and outer circulation), and be specially adapted to height/footpath than (〉=4) greatly as honeycomb section or shell and tube internal recycle organism fluidization reactor as described in Chinese patent CN1460651, the CN201031172.
Below in conjunction with two specific embodiments; utility model is further understood in exemplary illustration and help; but the embodiment detail only is in order to illustrate that utility model do not represent utility model design whole technical schemes down; therefore should not be construed as the total technical scheme of utility model is limited; some are In the view of the technician; do not depart from the unsubstantiality of utility model design and change, for example change or replace, all truely use novel protected scope so that technical characterictic with same or similar technique effect is simple.
Description of drawings
Fig. 1 is a utility model embodiment biological fluidized-bed reactor structural representation.
Fig. 2 is A-A sectional structure synoptic diagram of Fig. 1.
Fig. 3 is the carrier separator structural representation.
Fig. 4 is another embodiment carrier separator structural representation.
Fig. 5 is an embodiment bio-carrier schematic perspective view.
Fig. 6 is Fig. 5 side-view.
Embodiment
Embodiment 1: referring to Fig. 1,2,3,5,6, with common sewage is example, the utility model water treatment is with having honeycomb section, aerobic internal recycle three-phase stream biological fluidized-bed reactor, comprise fluidized-bed tower outer cylinder body 1, highly be lower than the center inner core 6 of urceolus, some even number dividing plates 5 of dividing equally setting between inner/outer tube will be divided into some sectors between the inner/outer tube annular space, adjacent region is respectively up-flow district (aerating apparatus (not providing among the figure) is arranged at the bottom) and falls stream district, and makes and respectively distinguish cross section height/footpath than 〉=4.There is water-in 4 inner core top, center, extends lower bottom part by under the central tube, and water outlet 3.The positive stage body carrier separator 2 of hollow circle, top, liquid bed top is located in half submergence, separator skew wall face constitutes plastics hollow out wall by hole less than the grizzly bar crack or the grid 2.1 of carrier, and wall oblique angle α (decides on tower tube diameter) between the 45-65 degree, and it is excellent with Canon carrier to be reflected into.Bio-carrier 8 is the short tube plastic carrier of the about 25mm honeycomb of diameter cross section, height 10mm, proportion 0.95-0.99g/mm
3, outmost turns is spination 8.1 convex-concave surfaces, the honeycomb cross section is connected and composed by some ribs 8.2.
Embodiment 2: referring to Fig. 4, as embodiment 1, for the bigger fluidisation cylindrical shell of diameter, Qi Ding top half submergence carrier separator 7 can be that the positive stage body 7.1,72. of hollow and 7.3 that some diameters reduce one by one overlaps composition between the upper and lower.
To those skilled in the art; under this patent design and embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example the fluidisation carrier can also adopt the hollow and annular short tube of other structures; fluidized-bed can also adopt other structure formations such as two-phase flow; outer circulation three-phase stream etc.; separator hollow out wall adopts other forms and material; the positive stage body of separator hollow is other shapes; or the like unsubstantiality change; can be employed equally; can both realize and basic identical function of the foregoing description and effect, launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Claims (10)
1, water treatment biological fluidized-bed reactor, comprise the biological fluidized bed reaction tower, the bio-carrier of built-in energy fluidizing, reaction tower top bio-carrier separator, it is characterized in that the fluidizing bio-carrier is that proportion and processed liquid specific gravity are approaching, the fluidizing plastic hollow ring-type that can suspend short tube, the bio-carrier separator positive stage body of hollow that to be hole surround less than the hollow out wall of carrier.
2,, it is characterized in that bio-carrier proportion slightly is lighter than treatment liq according to the described water treatment biological fluidized-bed reactor of claim 1.
3,, it is characterized in that bio-carrier proportion is 0.95-0.99g/cm according to the described water treatment biological fluidized-bed reactor of claim 2
3
4,, it is characterized in that surface, hollow and annular short tube bio-carrier outer ring indentation according to the described water treatment biological fluidized-bed reactor of claim 1.
5,, it is characterized in that hollow and annular short tube bio-carrier is a honeycomb cross section ring-type short tube according to claim 1,2,3 or 4 described water treatment biological fluidized-bed reactors.
6,, it is characterized in that carrier separator hollow out wall oblique angle 30-65 degree according to the described water treatment biological fluidized-bed reactor of claim 1.
7,, it is characterized in that carrier separator hollow out wall oblique angle 45-65 degree according to the described water treatment biological fluidized-bed reactor of claim 6.
8, according to claim 1,6 or 7 described water treatment biological fluidized-bed reactors, it is characterized in that carrier separator is the semi-immersed setting.
9,, it is characterized in that biological fluidized-bed reactor is internal recycle three-phase stream biological fluidized-bed reactor according to claim 1,2,3,4,6 or 7 described water treatment biological fluidized-bed reactors.
10,, it is characterized in that biological fluidized-bed reactor is honeycomb or shell and tube cross section fluidized bed bio reactor according to the described water treatment biological fluidized-bed reactor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202154875U CN201305501Y (en) | 2008-12-03 | 2008-12-03 | Biological fluidized bed reactor for water treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008202154875U CN201305501Y (en) | 2008-12-03 | 2008-12-03 | Biological fluidized bed reactor for water treatment |
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| CN201305501Y true CN201305501Y (en) | 2009-09-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424477A (en) * | 2011-10-27 | 2012-04-25 | 徐洪斌 | Counterflow moving bed biological advanced denitrification processing apparatus |
| CN103058361A (en) * | 2013-01-25 | 2013-04-24 | 南海发展股份有限公司 | Biological fluidized bed reactor for removing ammonia nitrogen in high-pollution raw water |
| CN103755106A (en) * | 2014-02-13 | 2014-04-30 | 广州益方田园环保股份有限公司 | Fluidized bed oxidizing tower and treatment process thereof |
| CN111039408A (en) * | 2020-01-02 | 2020-04-21 | 科盛环保科技股份有限公司 | Biological fluidization composite reactor for split type modular sewage treatment |
-
2008
- 2008-12-03 CN CNU2008202154875U patent/CN201305501Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424477A (en) * | 2011-10-27 | 2012-04-25 | 徐洪斌 | Counterflow moving bed biological advanced denitrification processing apparatus |
| CN103058361A (en) * | 2013-01-25 | 2013-04-24 | 南海发展股份有限公司 | Biological fluidized bed reactor for removing ammonia nitrogen in high-pollution raw water |
| CN103755106A (en) * | 2014-02-13 | 2014-04-30 | 广州益方田园环保股份有限公司 | Fluidized bed oxidizing tower and treatment process thereof |
| CN103755106B (en) * | 2014-02-13 | 2015-12-30 | 广州益方田园环保股份有限公司 | A kind of fluidized-bed oxidizing tower and treatment process thereof |
| CN111039408A (en) * | 2020-01-02 | 2020-04-21 | 科盛环保科技股份有限公司 | Biological fluidization composite reactor for split type modular sewage treatment |
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Granted publication date: 20090909 |