CN103058379A - Combined biological turntable reactor for implementing one-step autotrophic nitrogen removal process - Google Patents
Combined biological turntable reactor for implementing one-step autotrophic nitrogen removal process Download PDFInfo
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Abstract
The invention discloses a combined biological turntable reactor for implementing a one-step autotrophic nitrogen removal process. A plurality of biological discs, an aeration device and an inner heating device are arranged in a reaction container; and water outlets are arranged on the wall of the reaction container. A cylindrical net is arranged between two adjacent discs, the cylindrical nets are fixed on the discs, and a rotating shaft sleeve penetrates through the centers of all the discs and the cylindrical nets. Each disc is made of macromolecular plastic and is wrapped by a non-woven fabric layer; and a biological film protective net is arranged at each of the two ends in each cylindrical net. A plurality of water outlets are positioned at different heights of the wall of the reaction container; and a reactor cover capable of being opened and closed is arranged on the top of the reaction container, and a gas collecting device and a dissolved oxygen control hole are arranged on the reactor cover. According to the reactor, the film forming periods of the discs and a filler are short, the attachment performance of the filler is good, the matrix in the reactor is mixed uniformly, and the mass transfer effect is good; and dissolved oxygen in the reactor is easy to control, the nitrogen removal performance of the reactor is enhanced, and the running cost and the energy consumption are reduced.
Description
Technical field
The present invention relates to the improvement of one-step autotrophic nitrogen removal technique, be specifically related to a kind of non-woven fabrics parcel of one-step autotrophic nitrogen removal technique of realizing and fill combined rotating bio-disc reactor with bio-carrier, belong to environment protection, water treating equipment technical field.
Background technology
Along with the develop rapidly of industrial or agricultural, a large amount of nitrogenous compounds dischargings enter water body, cause the body eutrophication aggravation, and ammonia nitrogen removes the extensive concern that has caused people in the waste water.Traditional complete nitrification-denitrification biological denitrogenation technique is nitrite nitrogen by nitrite bacteria with the mineralized nitrogen in the waste water mainly, then nitrobacteria is further converted to nitrate nitrogen with nitrite nitrogen, then denitrifying bacterium is converted into nitrite nitrogen with nitrate nitrogen and finally is converted into nitrogen and overflows, to reach the purpose of denitrogenation.Traditional complete nitrification-denitrification biological denitrogenation process operation stable performance, denitrification effect is good, all be widely used both at home and abroad, but there are the shortcomings such as technical process is long, floor space is large, working cost is high in it all the time.Therefore, in recent years, the focus that efficient denitride technology (such as one-step autotrophic nitrogen removal technique) has become the research of nitrogenous effluent denitrogenation processing and used.
One-step autotrophic nitrogen removal technique (One-Stage Autotrophic Nitrogen Removal Process, OSANRP) is mainly to be the restriction oxygen concn by control biochemical reaction condition in single reaction vessel, finishes NH by autotrophic bacteria
4 +To N
2Whole conversion processes.After being found by the lot of domestic and foreign investigator, the one-step autotrophic nitrogen removal phenomenon by titled with different technique titles, and proposed wherein by NH
4 +To N
2The various mechanism hypothesis of transform removing, wherein the most representative have microenvironment and little ecological two kinds of mechanism explains.The at present general studied person's approval of the microenvironment explanation mechanism of one-step autotrophic nitrogen removal technique is also confirmed, be that one-step autotrophic nitrogen removal technique is to make autotrophic type aerobic ammonia oxidation bacterium (Ammonium Oxidation Bacteria, AOB) and anaerobic ammonium oxidizing bacteria (Anaerobic Ammonium Oxidation Bacteria, AAOB) in a habitat, coexist, and in same reactor, carry out the coupling of short distance nitration and Anammox (Anaerobic Ammonium Oxidation, ANAMMOX).Under the oxygen restricted condition (dissolved oxygen Dissolved Oxygen, DO is generally less than 1.0 mg/L), AOB and AAOB cooperate jointly, NH
4 +-N is NO by the AOB Partial Conversion
2 --N, the then NO to produce under the effect of AAOB
2 --N as electron acceptor(EA) with remaining NH
4 +-N is converted into N
2Remove.Its main representative technique has CANON(Completely Autotrophic Nitrogen Removal Over Nitrite) technique and OLAND technique.One-step autotrophic nitrogen removal technique and operational system thereof are emerging directions of sewage water denitrification research, also be the emerging technique in bio-denitrifying sewage field simultaneously, compare with traditional complete nitrification-denitrification biological denitrogenation technique, have that technical process is brief, energy consumption is low, the excess sludge discharge amount is few, and because this technique only needs to carry out, the advantages such as initial cost and sapce charge have been saved in a reactor.
Because the AAOB growth velocity of one of crucial bacterial classification of operation one-step autotrophic nitrogen removal technique is extremely low, its maximum specific growth rate is generally less than 0.09 d
-1So, require the reactor of this technique of operation should have good biological attachment ability and larger biomass.The control of DO concentration also is the key of this process operation, can convenient, effectively control the DO in the reactor, improves the mass-transfer efficiency of oxygen, is that the reactor institute of operation OSANRP is prerequisite.The reactor of operation one-step autotrophic nitrogen removal technique mainly contains sequencing batch reactor, fluidized-bed reactor, gas stripping type reactor etc. both at home and abroad at present, but these reactors are in operation and have some insoluble problems, poor such as the sequencing batch reactor mass-transfer efficiency, fluidized-bed reactor operation biofilm difficulty and biofilm are inhomogeneous, the restive reaction conditions of gas stripping type reactor etc.
Blodisc is a kind of biomembrance process treatment technology.Long microorganism (such as AAOB) generation time can grow on the disc of blodisc, biomass is large, have very strong anti impulsion load ability, simultaneously rotating bio-disc reactor has also that mass transfer effect is good, degree for the treatment of is high, controllability is strong, stable and reliable operation, safeguard simple, power consumption is low, the advantages such as economic operating cost are with a wide range of applications in sewage disposal.Adopt rotating bio-disc reactor operation one-step autotrophic nitrogen removal technique, the method that can combine by the opening degree of adjusting rotating speed, disc submergence rate and reactor cap is controlled the DO in the reactor effectively, improve simultaneously the mass-transfer efficiency of oxygen, the nitrogen removal performance of enhancing reactor; In addition, the disc in the rotating bio-disc reactor constantly rotates under the effect of mechanical force, disc and water uniform contact, and its biofilm is rapid and even.
The selection of disc material and design thereof are most important for the processing efficiency of blodisc.The disc material of commonly using both at home and abroad at present has corrugation plastic plate, glass epoxy, stainless steel, porous plastics etc., these discs demonstrate the shortcomings such as the disc shape is single, specific surface area is little, carrier surface forming biofilm property is poor, the biomass of unit volume disc is less, processing efficiency is low, work-ing life is short in actual applications mostly, thereby have seriously affected the processing efficiency of blodisc.Because AAOB poor growth, growth conditions is harsh, so require the disc of blodisc to have stronger biological attachment ability, simultaneously for the nitric efficiency of the blodisc that guarantees to move one-step autotrophic nitrogen removal technique, the rotating bio-disc reactor of selecting above material to make disc also requires disc to have larger specific surface area and then has larger biofilm biomass, so all should not be used for operation one-step autotrophic nitrogen removal technique.The AAOB optimum growth temp is 30 ~ 43 ℃, and this just needs the reactor of operation one-step autotrophic nitrogen removal technique to have the device that is easy to control temperature; The control of DO also is a key factor of the reactor nitric efficiency of impact operation one-step autotrophic nitrogen removal technique, the oxygen of trace (＜0.5g/L) AAOB is produced the reversible depression effect, must guarantee to be suitable for especially the anaerobic environment of AAOB growth in the ANAMMOX stage, and common blodisc does not possess the device of temperature and oxygen regulation and control, should not be used for operation one-step autotrophic nitrogen removal technique.For moving better one-step autotrophic nitrogen removal technique, must common blodisc structure and disc be improved, to build a new bio-disc reactor that is suitable for moving one-step autotrophic nitrogen removal technique.
Summary of the invention
For the prior art above shortcomings, the present invention proposes a kind of composite rotating bio-disc reactor of realizing one-step autotrophic nitrogen removal technique, this rotating bio-disc reactor has stronger biological attachment ability and larger biofilm biomass, and possesses temperature and oxygen adjusting function.
The present invention realizes that the technical solution of above-mentioned purpose is as follows:
A kind of composite rotating bio-disc reactor of realizing one-step autotrophic nitrogen removal technique comprises the reaction vessel of sealing being provided with some biological discs, aerating apparatus and inner heating device in the reaction vessel, is provided with water outlet in reactor vessel wall; It is characterized in that: all biological disc parallel arrangements, between adjacent two discs, be provided with coghill net, coghill net diameter and disc diameter coupling, the coghill net two ends are fixed on the corresponding disc, and a shaft sleeve passes from all discs and coghill net center; Disc adopts high molecule plastic to make and in its external parcel nonwoven layer; Two ends in each coghill net are respectively equipped with the microbial film catch net parallel with disc, and microbial film catch net and nonwoven layer keep the microbial film of a determining deviation to be hung on the protection non-woven fabrics; Form filler chamber between coghill net and the two microbial film catch nets, the filler chamber in each coghill net is divided into three little filler chamber by three filler chamber's filters along its length in the circumferential direction equal angles; Be filled with bio-carrier in each little filler chamber; Described water outlet has a plurality of and is positioned at different heights on the reactor vessel wall, and each water outlet is all with the control plug; But be provided with the reactor cap of folding on the reaction vessel top, reactor cap is provided with the gas gas collector of collecting and the dissolved oxygen control punch of being with the control plug that reaction vessel is produced.
This rotating bio-disc reactor also comprises the external heat circulation device that is positioned at outside the reaction vessel, the external heat circulation device comprises heating water tank and heating water recycle pump, heating water tank, heating water recycle pump and reaction vessel are connected to form circulation loop by pipeline, be provided with the water flow meter at pipeline, be provided with electric heater in the heating water tank, the inner heating device that electric heater in the heating water tank is connected with reaction vessel is connected with digital readout temperature controller respectively, regulate and control Heating temperature by the electric current button of regulating digital readout temperature controller, the electric heater Heating temperature is greater than the inner heating device Heating temperature.
Described aerating apparatus comprises bomb, reducing valve, gas meter and the aeration tube that connects successively, and aeration tube is positioned at reaction container bottom, is evenly distributed with solarization air cap on the aeration tube.
Described shaft sleeve is enclosed within the rotating shaft, and rotating shaft is connected with the drive unit that drives its rotation, and shaft sleeve and rotating shaft are fixing can rotate synchronously; Shaft sleeve is the high molecule plastic sleeve pipe.
Described microbial film catch net is 5mm with the distance of corresponding nonwoven layer.
But be provided with the door of folding on coghill net corresponding to described each little filler chamber, the area of door is about 1/3 of the coghill net area corresponding with it, can change easily bio-carrier to open this door.
Described coghill net, microbial film catch net and filler chamber's filter are Stainless Steel Wire Mesh, and to stop bio-carrier to pass through, string diameter is 1 ~ 1.6mm to this Stainless Steel Wire Mesh mesh less than the bio-carrier size.
Described bio-carrier effective ratio area 〉=500m
2/ m
3, diameter is Φ 10mm ~ Φ 60mm.
Rotating disk disc of the present invention adopts high molecule plastic to make and (the non-woven fabrics porosity is large in its surface parcel layer of non-woven fabric; surface irregularity; be very beneficial for apposition growth and the breeding of microorganism); rotating cage main body two ends are provided with microbial film protection stratum reticulare; in case the bio-carrier in the biological rotating cage clashes into the microbial film on the disc and causes it to come off in the moving process of spline; fill the bio-carrier than bigger serface in the rotating cage in the filler chamber; this not only is suitable for the apposition growth of poky AAOB and AOB; and greatly increased the interior biofilm biomass of rotating bio-disc reactor, strengthened the nitrogen removal performance of rotating bio-disc reactor.
Therefore the present invention has following beneficial effect:
The biofilm cycle of disc and filler is short, and the adhesion property of filler is good, and matrix mixes in the reactor, and mass transfer effect is good; Dissolved oxygen is easy to control in the reactor, be easy to realize and control the anaerobic environment of cultivating AAOB and intermission aerobic/anaerobic environment of realizing one-step autotrophic nitrogen removal technique, this not only is suitable for the apposition growth of poky anaerobic ammonium oxidizing bacteria and nitrite bacteria, and greatly increased biofilm biomass in the reactor, strengthen the nitrogen removal performance of reactor, and saved running cost and energy consumption.
Description of drawings
Fig. 1-one-piece construction figure of the present invention.
Fig. 2-biological rotating cage structural representation.
The unitized construction schematic diagram of Fig. 3-disc and microbial film catch net.
Fig. 4-rotating cage main part structural representation.
But the door schematic diagram of Fig. 5-biological rotating cage inner stuffing chamber and surface folding thereof.
Among the figure: the 1-disc; The 2-reaction vessel; The 3-drive unit; The 4-shaft sleeve; 5-dissolved oxygen control punch; The 6-reactor cap; The 7-gas collector; The 8-pore; The 9-water outlet; The 10-aeration tube; The 11-inner heating device; The 12-bio-carrier; The 13-digital readout temperature controller; The 14-heating water tank; 15-heating water recycle pump; The 16-stainless steel frame; The 17-gas meter; The 18-reducing valve; The 19-bomb, the 20-inlet chest; The 21-peristaltic pump; 22-water flow meter; The 23-nonwoven layer; 24-microbial film catch net; The 26-rotating shaft; The 27-coghill net; 28-filler chamber; 29-filler chamber filter; But the door of 30-folding.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Referring to Fig. 1-Fig. 5, the present invention realizes the composite rotating bio-disc reactor of one-step autotrophic nitrogen removal technique, the reaction vessel 2 that is used for sewage disposal that comprises sealing, reaction vessel 2 is installed on the stainless steel frame 16, reaction vessel 2 is connected with inlet chest 20 by inlet channel, be provided with peristaltic pump 21 at this inlet channel, periodically the sewage in the inlet chest is pumped in the reaction vessel.Be provided with biological respinse used some biological disc 1, aerating apparatus and inner heating device 11 in the reaction vessel.Be provided with water outlet 9 at reaction vessel 2 sidewalls, be used for sewage quantity in the control reaction vessel.
All biological disc 1 parallel arrangements are provided with coghill net 27 1 of adjacent two disc, and namely disc is Duoed one than coghill net quantity, coghill net 27 diameters and disc 1 diameter coupling, and coghill net 27 two ends are fixed on the corresponding disc 1.One shaft sleeve 4 passes from all discs 1 and coghill net 27 centers, shaft sleeve 4 is enclosed within the rotating shaft 26, rotating shaft 26 is connected with the drive unit 3 that drives its rotation, and rotating shaft 26 two ends are installed on reaction vessel 2 sidewalls by bearing, and shaft sleeve 4 is screwed and can rotates synchronously with rotating shaft 26.Shaft sleeve 4 is the high molecule plastic sleeve pipe, except being used for fixedly rotating disk and filler chamber's filter, can also prevent the rotating shaft corrosion simultaneously.
Coghill net 27 of the present invention, microbial film catch net 24 and filler chamber's filter 29 consist of biological rotating cage.
Described water outlet 9 has a plurality of (embodiment is 4) and be positioned at different heights on reaction vessel 2 walls, and each water outlet 9 all with the control plug, can be controlled the different depth of immersion of disc and proud exposure according to reaction process like this.But be provided with the reactor cap 6 of folding on reaction vessel 2 tops, reactor cap 6 is provided with the gas collector 7 that the gas of reaction vessel generation is collected, gas collector 7 is provided with the control punch 8 of band control plug, when needing to collect gas, open the control plug, gas namely enters gas collector.Be provided with simultaneously the dissolved oxygen control punch 5 of band control plug on the reactor cap 6, when the Anammox reaction occurs needs anaerobism cultivation AAOB, but jam-pack control plug makes reactor be in closed state, when the reaction of generation aerobic ammonia oxidation, open plug, in order to increase oxygen transfer speed.
Because the AAOB optimum growth temp is 30 ~ 43 ℃, this just needs the reactor of operation one-step autotrophic nitrogen removal technique to have the device that is easy to control temperature, and the purpose of above-mentioned inner heating device 11 is exactly to make the sewage in the reaction vessel remain on suitable temperature.In addition, because sewage treating efficiency problem, often exist in the sewage disposal reality needs that reaction vessel is processed are again returned in the sewage recirculation of processing, therefore this rotating bio-disc reactor also comprises the external heat circulation device that has circulation and indirect heating concurrently that is positioned at outside the reaction vessel, the external heat circulation device comprises heating water tank 14 and heating water recycle pump 15, heating water tank 14, heating water recycle pump 15 and reaction vessel 2 are connected to form circulation loop by pipeline, be provided with water flow meter 22 at pipeline, be provided with electric heater in the heating water tank 14, the inner heating device 11 that electric heater in the heating water tank is connected with reaction vessel is connected with digital readout temperature controller 13 respectively, regulates and control Heating temperature (modification scope is 0 ~ 60 ℃) by the electric current button of regulating digital readout temperature controller.Drop in temperature problem when considering heat loss in the working cycle and recirculated water and sewage in the inlet chest mixing, the present invention makes the electric heater Heating temperature greater than the inner heating device Heating temperature, can guarantee like this to reach when sewage begins to mix in entering reaction vessel in recirculated water and the inlet chest needs temperature, can keep again under the constant heating of inner heating device that this is temperature-resistant.Can realize the automatic control of water temperature by digital readout temperature controller, for microorganism (mainly being AOB and AAOB) is built a suitable stable metabolism and growth environment.
Described aerating apparatus comprises bomb 19, reducing valve 18, gas meter 17 and the aeration tube 10 that connects successively, and aeration tube 10 is positioned at reaction vessel 2 bottoms, is evenly distributed with solarization air cap on the aeration tube 10.The aerating apparatus nitrogen that exposes to the sun when being to cultivate AAOB is on the one hand created the anaerobic environment be suitable for its growth, on the other hand, the leading portion (being Nitrification Stage) of one-step autotrophic nitrogen removal technique can be an amount of expose to the sun into a certain amount of air, this can increase the rate of mass transfer of oxygen, can form again the gas shearing force and shear unnecessary microbial film on the rotating disk.Aerating apparatus cooperates with aforementioned four water outlets and dissolved oxygen control punch, can be easily, be easy at the inner intermission aerobic/anaerobic condition of realizing being suitable for the one-step autotrophic nitrogen removal process operation of rotating bio-disc reactor.
But be provided with the door 30 of folding on coghill net 27 corresponding to described each little filler chamber, the area of door is about 1/3 of the coghill net area corresponding with it, can easily change bio-carrier to open this door.
Described coghill net 27, microbial film catch net 23 and filler chamber's filter 29 are Stainless Steel Wire Mesh, and to stop bio-carrier to pass through, string diameter is 1 ~ 1.6mm to this Stainless Steel Wire Mesh mesh less than the bio-carrier size.
Described bio-carrier effective ratio area 〉=500m
2/ m
3, diameter is Φ 10mm ~ Φ 60mm.
Below introduce a reactor embodiment and wastewater treatment efficiency: biological rotating cage length is 60mm, and disc diameter is 150mm, and the disc total area is 0.35m
2The nonwoven layer thickness of parcel is 5mm; the distance of microbial film catch net and non-woven fabrics is 5mm on the disc; the wire netting aperture is 4.75mm; string diameter 1mm; the order number is 5 orders, and the useful volume of disk reactor is 20L, and its effective ratio area of bio-carrier SPR-1(of filling Qingdao Spring Water-Treatment Co., Ltd.'s research and development production in the rotating cage is 500m
2/ m
3), filling ratio is 30%, and rotating speed is 2 ~ 4r/min, and the maximum biomass of unit surface can reach 0.2 ~ 0.25kg/ m
2, the adhesive rate of organism can reach 97% ~ 99%, and when the submergence rate was 80%, HRT=12 ~ 16h, the maximum nitrogen of this reactor is removed load can reach 4.2kg NH
4 +-N/Ld, the TN clearance can reach more than 80%.
The using method of this reactor and working process:
Rotating bio-disc reactor is filled the bio-carrier 12 that has than large specific surface first in filler chamber 28 in the whole process of operation OSANRP.When under anaerobic cultivating AAOB, the water outlet 9 that open position is the highest, all the other water outlets are closed, simultaneously with the pore 8 on the control plug jam-pack gas collector, in reaction container bottom exposes to the sun a certain amount of nitrogen emptying reaction vessel during air, with control plug jam-pack dissolved oxygen control punch 5, this moment, disc 1 immersed in the sewage fully, had formed an anaerobic environment that is suitable for the AAOB growth fully in the whole reaction vessel.Meanwhile, under the effect of drive unit 3, rotating shaft 4 drives rotating cage and rotates together, and rotating disk sewage abundant and in the reaction vessel contacts, and this helps rotating disk and biofilm is even, the mass-transfer efficiency of raising matrix.After AAOB in the rotating bio-disc reactor reaches certain cell concentration, in reactor, inoculate AOB, open the control plug of dissolved oxygen control punch 5 this moment, use 9 water outlets of the lower water outlet of relative position instead, sewage level descends in the reaction vessel, the rotating disk bottom is immersed in the sewage, and upper exposed is in air.Visual disposition reduced gradually aeration rate or stopped aeration this moment, can open gas collector and collect the nitric efficiency that reaction generation escaping gas is convenient to study reactor after stopping the aeration normal operation.When rotating disk 1 and rotating cage change in the sewage, the reaction substrate (NH in the microbial film absorption sewage on the filler on the rotating disk and in the rotating cage
4 +), finish anaerobic ammonium oxidation process; When rotating disk 1 and cylinder produced sewage, airborne oxygen constantly diffused in rotating disk and the rotating cage in the microbial film on the filler, finishes the nitrosification process.The immersion sewage neutralization that constantly replaces of microbial film on the rotating disk is exposed in the air like this, has realized one-step autotrophic nitrogen removal.Go back simultaneously capable of regulating rotating shaft rotating speed and water outlet position and control nitrosification and Anammox reaction process.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. composite rotating bio-disc reactor of realizing one-step autotrophic nitrogen removal technique, the reaction vessel (2) that comprises sealing, be provided with some biological discs (1), aerating apparatus and inner heating device in the reaction vessel (2), be provided with water outlet (9) at reaction vessel (2) wall; It is characterized in that: all biological disc (1) parallel arrangements, between adjacent two discs (1), be provided with coghill net (27), coghill net diameter and disc diameter coupling, coghill net (27) two ends are fixed on the corresponding disc (1), and a shaft sleeve (4) passes from all discs and coghill net center; Disc adopts high molecule plastic to make and in its external parcel nonwoven layer (23); Two ends in each coghill net are respectively equipped with the microbial film catch net (24) parallel with disc, and microbial film catch net (24) keeps the microbial film of a determining deviation to be hung on the protection non-woven fabrics with nonwoven layer (23); Form filler chamber (28) between coghill net (27) and the two microbial film catch nets (24), the filler chamber (28) in each coghill net is divided into three little filler chamber by three filler chamber's filters (29) along its length in the circumferential direction equal angles; Be filled with bio-carrier (12) in each little filler chamber; Described water outlet (9) has a plurality of and is positioned at different heights on reaction vessel (2) wall, and each water outlet (9) is all with the control plug; At reaction vessel (2) but the top is provided with the reactor cap (6) of folding, reactor cap (6) is provided with the dissolved oxygen control punch (5) that gas collector (7) that gas that reaction vessel is produced collects and band control are filled in.
2. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1, it is characterized in that: this rotating bio-disc reactor also comprises the external heat circulation device that is positioned at outside the reaction vessel, the external heat circulation device comprises heating water tank (14) and heating water recycle pump (15), heating water tank (14), heating water recycle pump (15) and reaction vessel are connected to form circulation loop by pipeline, be provided with water flow meter (22) at pipeline, be provided with electric heater in the heating water tank, the inner heating device that electric heater in the heating water tank is connected with reaction vessel is connected with digital readout temperature controller (13) respectively, regulate and control Heating temperature by the electric current button of regulating digital readout temperature controller, the electric heater Heating temperature is greater than the inner heating device Heating temperature.
3. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1, it is characterized in that: described aerating apparatus comprises bomb (19), reducing valve (18), gas meter (17) and the aeration tube (10) that connects successively, aeration tube (10) is positioned at reaction vessel (2) bottom, is evenly distributed with solarization air cap on the aeration tube.
4. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1, it is characterized in that: described shaft sleeve (4) is enclosed within the rotating shaft (26), rotating shaft (26) is connected with the drive unit (3) that drives its rotation, and shaft sleeve (4) can rotate synchronously with rotating shaft (26) is fixing; Shaft sleeve (4) is the high molecule plastic sleeve pipe.
5. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1 is characterized in that: described microbial film catch net (24) is 5mm with the distance of corresponding nonwoven layer (23).
6. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1, it is characterized in that: but be provided with the door (30) of folding on coghill net corresponding to described each little filler chamber, the area of door is about 1/3 of the coghill net area corresponding with it, opens this door and can easily change bio-carrier.
7. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1; it is characterized in that: described coghill net (27), microbial film catch net (24) and filler chamber's filter (29) are Stainless Steel Wire Mesh; to stop bio-carrier to pass through, string diameter is 1 ~ 1.6mm to this Stainless Steel Wire Mesh mesh less than the bio-carrier size.
8. the composite rotating bio-disc reactor of realization one-step autotrophic nitrogen removal technique according to claim 1 is characterized in that: described bio-carrier (12) effective ratio area 〉=500m
2/ m
3, diameter is Φ 10mm ~ Φ 60mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103588310A (en) * | 2013-11-22 | 2014-02-19 | 中国科学院南京地质古生物研究所 | Method and system for rapidly and accurately establishing dissolved oxygen content in water through double passages |
| CN103641235A (en) * | 2013-12-12 | 2014-03-19 | 北京师范大学 | Downward adsorption-biodegradation rotating disc for processing petrochemical organic wastewater |
| CN108217915A (en) * | 2017-11-30 | 2018-06-29 | 江西师范大学 | For the microorganism electrochemical biological rotating disk of sewage disposal |
| CN111875032A (en) * | 2020-07-23 | 2020-11-03 | 重庆市科学技术研究院 | Biological rotating cage reactor for water treatment and phosphorus-containing low-ammonia-nitrogen wastewater treatment method |
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| CN103588310A (en) * | 2013-11-22 | 2014-02-19 | 中国科学院南京地质古生物研究所 | Method and system for rapidly and accurately establishing dissolved oxygen content in water through double passages |
| CN103641235A (en) * | 2013-12-12 | 2014-03-19 | 北京师范大学 | Downward adsorption-biodegradation rotating disc for processing petrochemical organic wastewater |
| CN103641235B (en) * | 2013-12-12 | 2015-08-05 | 北京师范大学 | The descending manner Adsorption-Biodegradation rotating disk of process petrochemical organic wastewater |
| CN108217915A (en) * | 2017-11-30 | 2018-06-29 | 江西师范大学 | For the microorganism electrochemical biological rotating disk of sewage disposal |
| CN108217915B (en) * | 2017-11-30 | 2020-10-16 | 江西师范大学 | Microbial electrochemical biological rotating disk for sewage treatment |
| CN111875032A (en) * | 2020-07-23 | 2020-11-03 | 重庆市科学技术研究院 | Biological rotating cage reactor for water treatment and phosphorus-containing low-ammonia-nitrogen wastewater treatment method |
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| CN103058379B (en) | 2014-08-06 |
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