CN210393890U - Device for strengthening synchronous denitrification through pyridine mineralization by utilizing nano ferroferric oxide - Google Patents
Device for strengthening synchronous denitrification through pyridine mineralization by utilizing nano ferroferric oxide Download PDFInfo
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Abstract
The utility model relates to a device for strengthening synchronous denitrification of pyridine mineralization by utilizing nano ferroferric oxide, which comprises a water inlet tank, a UASB anoxic reactor, an ABR anaerobic baffled reactor, a first sedimentation tank, an MBBR moving bed biomembrane aerobic device and a water outlet tank which are connected in sequence; the upper end of the UASB anoxic reactor is provided with a first overflow tank, and the upper end of the UASB anoxic reactor is connected with the ABR anaerobic baffled reactor through the first overflow tank; a second overflow tank is arranged at the upper end of the MBBR moving bed biofilm aerobic reactor, one end of the second overflow tank is connected with a water outlet tank, and the other end of the second overflow tank is connected with the bottom of the UASB anoxic reactor through a first return pipe; the utility model discloses effectively holding back degradation fungus and nitrobacteria and reducing sludge loss, both guaranteed efficient pyridine degradation efficiency and improved nitrification efficiency again, ensured the long-term effectual steady operation of reaction unit.
Description
Technical Field
The utility model relates to a device for strengthening synchronous denitrification by using nano ferroferric oxide and mineralizing pyridine, belonging to the technical field of biologically strengthening treatment of organic pollutants difficult to degrade in environment.
Background
In the technical field of sewage treatment, pyridine is a typical nitrogen-containing heterocyclic compound, and belongs to a non-degradable toxic and harmful organic compound. Pyridine and its derivatives are widely used in the industries of pesticides, dyes, pharmaceuticals, catalysts, deformers, and the like. Pyridine is volatile and has obvious teratogenic and carcinogenic properties. Therefore, the pyridine-containing wastewater is discharged without treatment, which causes serious pollution and harm.
At present, a biological method treatment process plays an important role in pyridine degradation, and the biological method is a method for decomposing organic matters in wastewater by utilizing microorganism metabolism and converting the organic matters into simple inorganic compounds so as to purify a water body. The method has the advantages of wide microbial source, rapid propagation, easy culture, strong adaptability, large wastewater treatment amount by using a biological method and low cost. In the aerobic degradation process of the pyridine waste water, the pyridine is easy to volatilize due to the aeration effect, so that vomit smell is generated; under anaerobic conditions, pyridine is difficult to open the ring and degrades relatively slowly due to the lack of electron acceptors. Under the anoxic condition (without molecular oxygen but with combined oxygen such as nitrate nitrogen, etc.), the pyridine can utilize nitrate nitrogen as an electron acceptor to carry out ring-opening degradation and synchronously realize denitrification of the nitrate nitrogen. Therefore, for the treatment of industrial wastewater containing pyridine, such as coking wastewater, the "pre-anoxic denitrification-aerobic nitrification" is considered to be an effective treatment process. However, in the anoxic section, the degradation effect is influenced by the reduction of the activity of the microorganisms due to the severe inhibition effect of the high toxicity of the pyridine on the microorganisms. The loss of nitrified sludge in the aerobic section is serious, and the nitrification effect is influenced.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art to containing pyridine waste water degradation and denitrogenation inefficiency, the utility model provides an utilize nanometer ferroferric oxide to strengthen device of synchronous denitrogenation of pyridine mineralization. The complete degradation and the synchronous denitrification of the pyridine are realized in a continuous flow anoxic-anaerobic-microaerobic-aerobic bioreactor. The utility model discloses effectively combine advanced nanometer metallic oxide and biological treatment technique, full play nanometer material disperses well to combine closely with the microorganism, reduces the loss of iron element, and ferroferric oxide has the advantage of good electron conduction characteristic again. Meanwhile, the iron element is an essential element for the growth of microorganisms, and a plurality of iron-containing proteins are required for the cellular metabolism. The anoxic-anaerobic-microaerobic-aerobic process can effectively realize the purposes of pyridine degradation and mineralization synchronous nitrification and denitrification.
In order to achieve the above object, the utility model adopts the following technical scheme:
a device for strengthening synchronous denitrification of pyridine mineralization by utilizing nano ferroferric oxide comprises a water inlet pool, a UASB anoxic reactor, an ABR anaerobic baffled reactor, a first sedimentation tank, an MBBR moving bed biomembrane aerobic device and a water outlet pool which are sequentially connected; the upper end of the UASB anoxic reactor is provided with a first overflow tank, and the upper end of the UASB anoxic reactor is connected with the ABR anaerobic baffled reactor through the first overflow tank; the upper end of the MBBR moving bed biomembrane aerobic device is provided with a second overflow tank, one end of the second overflow tank is connected with a water outlet tank, and the other end of the second overflow tank is connected with the bottom of the UASB anoxic reactor through a first return pipe.
As an improvement of the utility model, the ABR anaerobic baffling reactor comprises a first anaerobic zone, a second anaerobic zone and a micro-aerobic zone which are sequentially arranged from left to right, wherein the first anaerobic zone, the second anaerobic zone and the micro-aerobic zone are sequentially communicated, and a stirrer is arranged in the micro-aerobic zone.
As an improvement of the utility model, the ABR anaerobic baffling reactor further comprises a second sedimentation tank, the first anaerobic zone is connected with the second sedimentation tank through a second return pipe, and the second sedimentation tank is connected with the micro-aerobic zone through a third return pipe.
As an improvement of the utility model, a peristaltic pump is arranged on the second return pipe and the third return pipe.
As an improvement of the utility model, the top of the MBBR moving bed biomembrane aerobic reactor is provided with a three-phase separation device.
As an improvement of the utility model, the MBBR moves and is equipped with the filler in the biomembrane aerobic device.
As an improvement of the utility model, the lower end of the MBBR moving bed biomembrane aerobic device is provided with an aeration device, and the aeration device is connected with the bottom end of the MBBR moving bed biomembrane aerobic device.
As an improvement of the utility model, the water inlet pool is connected with the bottom of the UASB anoxic reactor through a peristaltic pump; the ABR anaerobic baffled reactor is connected with a first sedimentation tank through a peristaltic pump, the first sedimentation tank is connected with the lower end of the MBBR moving bed biomembrane aerobic reactor through the peristaltic pump, and the second overflow tank is connected with the bottom of the UASB anoxic reactor through the peristaltic pump.
The method for strengthening anoxic-anaerobic-microaerobic-aerobic pyridine mineralization synchronous denitrification by utilizing nano ferroferric oxide is carried out according to the following three stages:
the first stage is as follows: the pollutant in the treated wastewater is pyridine which is a typical nitrogen heterocyclic compound. The reactor temperature was maintained at 35. + -. 2 ℃ with a total reactor volume of 14L and a hydraulic retention time of 4 d. Anaerobic sludge of an urban sewage treatment plant is used as initial inoculation sludge, and nano ferroferric oxide is added into the anaerobic sludge and stirred to be uniformly mixed with the sludge. Adding activated sludge added with nano ferroferric oxide into each reactor in the device, introducing pyridine wastewater into the reactors, adding phosphate buffer salt (additional carbon source sodium acetate) into wastewater inlet water, keeping the pH of each reactor to be 7.0-7.6, wherein the concentration of pyridine in the wastewater is 500mg/L, and the concentration of the additional carbon source sodium acetate is 500 mg/L. The concentration of the nano ferroferric oxide in the reactor is 1000 mg/L, the concentration of sludge in the reactor is 8g/L, and the particle size of the nano ferroferric oxide is kept about 50 nm. The inlet water passes through the anoxic-anaerobic-microaerobic-aerobic reaction zone in sequence and is finally discharged by the aerobic reactor in an overflowing way.
And a second stage: adding no additional carbon source (additional carbon source sodium acetate) into wastewater inlet water, taking pyridine contained in the wastewater as a unique carbon source and a unique nitrogen source, and degrading the pyridine, wherein the rest steps are the same as the first stage; the pyridine concentration was controlled to 500 mg/L.
And a third stage: and opening the aerobic reaction zone to flow back to the anoxic reaction zone and the micro-aerobic reaction zone to perform anaerobic reaction. The reflux ratio is 50-200%. The rest steps are the same as the first stage; nitrate nitrogen generated by aerobic nitrification reaction flows back to an anoxic reaction zone (namely, the backflow of an MBBR moving bed biomembrane aerobic reactor to a UASB anoxic reactor) to be used as an electron acceptor for compensating and strengthening the anoxic degradation of pyridine, nitrite nitrogen generated by microaerobic flows back to an anaerobic zone (namely, the internal backflow of an ABR anaerobic baffled reactor) and ammonia nitrogen generated by the degradation of pyridine are subjected to anaerobic ammonia oxidation and denitrification, and the pyridine and degradation products are further mineralized.
The method principle of the utility model is as follows:
the nano ferroferric oxide has good electronic conduction characteristics, and can form an electronic conduction chain between microorganisms, and form a nano wire between the microorganisms and organic matters to transfer electrons. The nano ferroferric oxide can also stimulate the secretion of Extracellular Polymers (EPS) of microorganisms, promote the electron transfer of the microorganisms, accelerate the metabolism rate of the microorganisms and strengthen the degradation and utilization of organic matters. The nano ferroferric oxide can be converted into iron with various forms in an anoxic-anaerobic-microaerobic-aerobic system to release Fe3+/Fe2+Is a metal element necessary for the metabolism of the microorganism, the chelated iron can enter the microorganism to participate in the electron transfer, and Fe2+Promote the synthesis of various enzymes involved in pyridine catabolism. The nano ferroferric oxide can change the microbial population structure, promote the growth of pyridine degrading microbes, increase the biological diversity and improve the system stability.
In a continuous flow anoxic-anaerobic-microaerobic-aerobic reactor, ammonia nitrogen released by pyridine degradation is nitrified to generate nitrate nitrogen in an aerobic stage, and Fe released by nano ferroferric oxide3+Promote the secretion of nitrobacteria active kinase to improve the nitrification efficiency. Nitrate nitrogen flows back to an anoxic stage to be used as an electron acceptor to strengthen the pyridine anaerobic degradation, under the anaerobic condition, a conductor formed by the nano ferroferric oxide can promote the electron transfer among microorganism species, stimulate the methanogenesis process and effectively promote the degradation of the pyridine as a carbon source, the nano ferroferric oxide improves the relative abundance of methanogenic bacteria in archaea communities, promotes the microbial activity, and the released Fe2+The secretion of the kinase promotes denitrification reaction to accelerate the utilization rate of the substrate. Is not loweredThe decomposed low-concentration pyridine and the intermediate product of pyridine degradation continue to degrade in the anaerobic stage, and nitrite nitrogen generated by microaerobic shortcut nitrification flows back to an anaerobic region to carry out anaerobic ammonia oxidation with ammonia nitrogen generated by pyridine degradation, so that the denitrification process is further completed.
The utility model combines the advanced nano metal oxide technology and the biological treatment technology. The advantages that the nano material is well dispersed and tightly combined with microorganisms, the loss of iron elements is reduced, and the ferroferric oxide has good electronic conduction characteristics are fully exerted. Meanwhile, the iron element is an essential element for the growth of microorganisms, and a plurality of iron-containing proteins are required for the cellular metabolism.
The nano ferroferric oxide has good electronic conduction characteristics, and can form an electronic conduction chain between microorganisms, and form a nano wire between the microorganisms and organic matters to transfer electrons. The nano ferroferric oxide can also stimulate the secretion of Extracellular Polymers (EPS) of microorganisms, promote the electron transfer of the microorganisms, accelerate the metabolism rate of the microorganisms and strengthen the degradation and utilization of organic matters. The nano ferroferric oxide can be converted into iron with various forms in an anoxic-anaerobic-microaerobic-aerobic system to release Fe3+/Fe2+Is a metal element necessary for the metabolism of the microorganism, the chelated iron can enter the microorganism to participate in the electron transfer, and Fe2+Promote the synthesis of various enzymes involved in pyridine catabolism. The nano ferroferric oxide can change the microbial population structure, promote the growth of pyridine degrading microbes and release Fe3+Promote the secretion of nitrobacteria active kinase to improve the nitrification efficiency. The conductor formed by the nano ferroferric oxide can promote the electron transfer among microorganism species, stimulate the methane production process, effectively promote the degradation of pyridine as a carbon source, improve the relative abundance of methanogens in archaea communities, promote the microbial activity, and release Fe2+The secretion of the kinase promotes denitrification reaction to accelerate the utilization rate of the substrate. Increase the biological diversity and improve the system stability.
In the continuous flow anoxic-anaerobic-microaerobic-aerobic reactor, ammonia nitrogen released by pyridine degradation is nitrified to generate nitrate nitrogen in an aerobic stage. Nitrate nitrogen flows back to an anoxic stage to be used as an electron acceptor to strengthen the anaerobic degradation of pyridine, undegraded low-concentration pyridine and an intermediate product of pyridine degradation continue to be degraded in the anaerobic stage under the anaerobic condition, nitrite nitrogen generated by microaerobic shortcut nitrification flows back to an anaerobic region to be subjected to anaerobic ammonia oxidation with ammonia nitrogen generated by pyridine degradation, the denitrification process is further completed, and meanwhile, the pyridine and the degradation product are further mineralized.
The utility model discloses the pyridine clearance is up to 100%, and the TOC clearance is up to 97.8%, and total nitrogen clearance reaches 93.6%.
Owing to adopted above technique, the utility model discloses compare than prior art, the beneficial effect who has as follows:
the utility model discloses a UASB anoxic reactor, ABR anaerobism baffling reactor, MBBR move bed biomembrane good oxygen ware, two overflow arrangement, two sludge settling tanks and three-phase separator, effectively hold back degradation fungus and nitrobacteria and reduce sludge loss, both guaranteed efficient pyridine degradation efficiency and improved nitrification efficiency again, ensured the long-term effectual steady operation of reaction unit.
Drawings
FIG. 1 is a schematic structural diagram of a device for strengthening synchronous denitrification by pyridine mineralization through nano ferroferric oxide;
FIG. 2 is a graph showing the trend of degradation of pyridine in example 2;
FIG. 3 is a graph showing the ammonia nitrogen change tendency in example 2;
FIG. 4 is a graph showing the trend of nitrous nitrogen and nitrate nitrogen in example 2;
FIG. 5 is a graph showing the trend of degradation of pyridine in example 3;
FIG. 6 is a graph showing the ammonia nitrogen change tendency in example 3;
FIG. 7 is a graph showing the trend of nitrous nitrogen and nitrate nitrogen in example 3;
FIG. 8 is a graph showing the trend of degradation of pyridine in example 4;
FIG. 9 is a graph showing the ammonia nitrogen change tendency in example 4;
FIG. 10 is a graph showing the trend of nitrous nitrogen and nitrate nitrogen in example 4;
FIG. 11 is the removal rate of pyridine, TOC and TN at the optimum reflux ratio in example 4;
in the figure: 1. the anaerobic bioreactor comprises a water inlet tank, 2, a UASB anoxic reactor, 3, an ABR anaerobic baffling reactor, 4, a first sedimentation tank, 5, a BBR moving bed biomembrane aerobic device, 6, a water outlet tank, 7, a first overflow tank, 8, a second overflow tank, 9, a reactor body, 10, a first anaerobic zone, 11, a second anaerobic zone, 12, a micro-aerobic zone, 13, a stirrer, 14, a second sedimentation tank, 15, a second return pipe, 16, a third return pipe, 17, a peristaltic pump, 18, a three-phase separation device, 19, a filler, 20, an aeration device, 21 and a first return pipe.
Detailed Description
The invention will be further elucidated with reference to the drawings and the detailed description.
Example 1:
a device for strengthening synchronous denitrification of pyridine mineralization by utilizing nano ferroferric oxide comprises a water inlet tank 1, a UASB anoxic reactor 2, an ABR anaerobic baffled reactor 3, a first sedimentation tank 4, an MBBR moving bed biomembrane aerobic reactor 5 and a water outlet tank 6 which are connected in sequence; the upper end of the UASB anoxic reactor 2 is provided with a first overflow tank 7, and the upper end of the UASB anoxic reactor 2 is connected with the ABR anaerobic baffled reactor 3 through the first overflow tank 7; and a second overflow tank 8 is arranged at the upper end of the MBBR moving bed biomembrane aerobic device 5, one end of the second overflow tank 8 is connected with the water outlet tank 6, and the other end of the second overflow tank 8 is connected with the bottom of the UASB anoxic reactor 2 through a first return pipe 21.
The ABR anaerobic baffled reactor 3 comprises a first anaerobic zone 10, a second anaerobic zone 11 and a micro-aerobic zone 12 which are sequentially arranged from left to right, wherein the first anaerobic zone 10, the second anaerobic zone 11 and the micro-aerobic zone 12 are sequentially communicated, and a stirrer 13 is arranged in the micro-aerobic zone 12.
The ABR anaerobic baffled reactor also comprises a second sedimentation tank 14, the first anaerobic zone 10 is connected with the second sedimentation tank 14 through a second return pipe 15, and the second sedimentation tank 14 is connected with the microaerobic zone 12 through a third return pipe 16.
The second return pipe 15 and the third return pipe 16 are both provided with peristaltic pumps 17.
And a three-phase separation device 18 is arranged at the top of the MBBR moving bed biofilm aerobic reactor. The three-phase separation device 18 effectively intercepts microorganisms, reduces sludge loss and improves nitrification efficiency.
And a filler 19 is arranged in the MBBR moving bed biomembrane aerobic device 5.
The lower end of the MBBR moving bed biomembrane aerobic device 5 is provided with an aeration device 20, and the aeration device 20 is connected with the bottom end of the MBBR moving bed biomembrane aerobic device 5.
The water inlet pool 1 is connected with the bottom of the UASB anoxic reactor 2 through a peristaltic pump 17; the ABR anaerobic baffled reactor 3 is connected with a first sedimentation tank 4 through a peristaltic pump 17, the first sedimentation tank 4 is connected with the lower end of an MBBR moving bed biomembrane aerobic reactor 5 through the peristaltic pump 17, and a second overflow tank 8 is connected with the bottom of a UASB anoxic reactor 2 through the peristaltic pump 17.
The water inlet tank 1 sends water to the bottom end of the UASB anoxic reactor 2 through the peristaltic pump 17, the upper part of the UASB anoxic reactor 2 is provided with a first overflow tank 7, and effluent of the anoxic reactor automatically flows into the ABR anaerobic baffled reactor 3 through the first overflow tank 7 by utilizing gravity difference; the ABR anaerobic baffled reactor 3 comprises three grid chambers which are connected in series and are separated by a baffle plate, and a polyhedral hollow ball filler 19 is added to the top of each grid chamber of the first anaerobic zone 10 and the second anaerobic zone 11; the third grid chamber is a micro-aerobic zone 12, the rear part of the micro-aerobic zone 12 is connected with a second sedimentation tank 14 to reduce sludge loss, the micro-aerobic zone 12 and the first anaerobic zone 10 are connected with return pipes, overflow water of the micro-aerobic zone 12 enters the second sedimentation tank 14 through a third return pipe 16 and enters the first anaerobic zone 10 through a second return pipe 15, and the second anaerobic zone 11 enters the micro-aerobic zone 12 in an overflow mode to reduce energy loss. The effluent of the micro aerobic zone 12 is connected with the first sedimentation tank 4 and then enters the MBBR moving bed biofilm aerobic device 5, a hollow ball filler 19 is arranged in the MBBR moving bed biofilm aerobic device 5, an aeration device 20 is arranged at the bottom of the MBBR moving bed biofilm aerobic device 5, and the hollow ball filler 19 fixes microorganisms. The upper end of the MBBR moving bed biomembrane aerobic device 5 is provided with a second overflow tank 8, one end of the second overflow tank 8 is connected with the water outlet tank 6, and the other end of the second overflow tank 8 and the bottom of the UASB anoxic reactor 27 are connected with a first return pipe 21.
The micro aerobic zone 12 and the first anaerobic zone 10 are connected with a second sedimentation tank 14, and a first sedimentation tank 4 is arranged between the micro aerobic zone 12 and the MBBR moving bed biomembrane aerobic device 5, so that the discharged sludge can timely flow back to the reactor, and the sludge loss is reduced.
Constant-temperature water bath interlayers are arranged on the outer sides of the UASB anoxic reactor 2, the ABR anaerobic baffled reactor 3 and the MBBR moving bed biomembrane aerobic device 5;
the utility model discloses measured business turn over water pyridine concentration among the reaction system, the pyridine clearance, the TOC clearance, total nitrogen clearance, ammonia nitrogen, nitrous nitrogen, nitrate nitrogen concentration, index such as effluent turbidity, the comprehensive effect of getting rid of the processing system to the pyridine.
Example 2
A first reaction stage: this example uses pyridine-containing wastewater as a treatment target. Anaerobic sludge of an urban sewage treatment plant is used as initial inoculation sludge, and nano ferroferric oxide is added into the anaerobic sludge and stirred to be uniformly mixed with the sludge. Activated sludge added with nano ferroferric oxide is respectively put into each reactor of the device, so that the concentration of the nano ferroferric oxide in the reactor is 1000 mg/L. The temperature of the reactor is kept at 35 +/-2 ℃, the total volume of the reactor is 14L, the hydraulic retention time is 4d, pyridine wastewater is introduced into the reactor, phosphate buffer salt (additional carbon source sodium acetate) is added into the wastewater inlet water, the pH of each reactor is kept at 7.0-7.6, the concentration of pyridine in the wastewater is 500mg/L, and the concentration of the additional carbon source sodium acetate is 500 mg/L. The sludge concentration in the reactor is 8g/L, and the grain size of the nano ferroferric oxide is kept about 50 nm. The inlet water passes through the anoxic-anaerobic-microaerobic-aerobic reaction zone in sequence and is finally discharged by the aerobic reactor in an overflowing way.
As shown in the figure 2-4, the pyridine is completely removed within 14 days after the reaction device is started to operate, the pyridine in the anoxic and anaerobic zones is removed by more than 50% under the strengthening action of the ferroferric oxide, and the ammonia nitrogen is completely nitrified to generate nitrate nitrogen in the MBBR under the strengthening action of the nano ferroferric oxide.
Example 3:
and (3) a second reaction stage: the difference of the reaction stage from the example 2 is that no external carbon source (external carbon source sodium acetate) is added into the inlet water, and pyridine is used as the only carbon source and nitrogen source for pyridine degradation. The pyridine concentration in the wastewater was 500mg/L, and the other steps were the same as in example 2.
As shown in FIGS. 5-7, with the removal of the easily degradable carbon source sodium acetate, the reaction device uses highly toxic pyridine as the only carbon source and nitrogen source, and the pyridine degradation and nitrification effects are not inhibited but further improved. After anoxic and anaerobic degradation, the removal rate of pyridine is as high as 64.1 +/-0.8%, and only 186 mg/L of pyridine is left in anaerobic effluent, which shows that the nano ferroferric oxide has good promoting effect.
Example 4:
a third reaction stage: this example uses pyridine-containing wastewater as a treatment target. And opening the aerobic reaction zone to flow back to the anoxic reaction zone and the micro-aerobic reaction zone to perform anaerobic reaction. The reflux ratio is 50-200%. The rest is the same as in example 2.
As shown in fig. 8 to 11, the reflux ratio was set to 50%, 100%, and 200% in this order, and when the reflux ratio was 200%, both pyridine degradation and total nitrogen removal exhibited the best conditions. In particular, the total nitrogen of effluent is only 5 mg/L of nitrate nitrogen. As shown in FIG. 5, in the state of optimal reflux ratio, the nano ferroferric oxide-enhanced anoxic-anaerobic-microaerobic-aerobic pyridine mineralization synchronous denitrification system has the pyridine removal rate of 100%, the TOC removal rate of 97.8% and the total nitrogen anoxic removal rate of 93.6%. Under the stimulation of nano ferroferric oxide, the reflux nitrate nitrogen is used as an electron acceptor to obviously enhance the degradation of pyridine. Meanwhile, nitrite nitrogen flowing back to the anaerobic zone in a micro aerobic way plays a key role in denitrification and further realization of mineralization of pyridine. The reaction method and the device of the utility model make remarkable improvement on the degradation and synchronous denitrification of pyridine.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention, and the protection scope of the present invention should be protected by the technical solutions described in the claims, and equivalent alternatives including technical features in the technical solutions described in the claims are also within the protection scope of the present invention.
Claims (8)
1. A device for strengthening synchronous denitrification by using pyridine mineralization through nano ferroferric oxide is characterized in that: comprises a water inlet pool, a UASB anoxic reactor, an ABR anaerobic baffled reactor, a first sedimentation tank, an MBBR moving bed biomembrane aerobic reactor and a water outlet pool which are connected in sequence; the upper end of the UASB anoxic reactor is provided with a first overflow tank, and the upper end of the UASB anoxic reactor is connected with the ABR anaerobic baffled reactor through the first overflow tank; the upper end of the MBBR moving bed biomembrane aerobic device is provided with a second overflow tank, one end of the second overflow tank is connected with a water outlet tank, and the other end of the second overflow tank is connected with the bottom of the UASB anoxic reactor through a first return pipe.
2. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 1, characterized in that: the ABR anaerobic baffled reactor comprises a first anaerobic zone, a second anaerobic zone and a micro-aerobic zone which are sequentially arranged from left to right; the first anaerobic zone, the second anaerobic zone and the micro-aerobic zone are communicated in sequence, and a stirrer is arranged in the micro-aerobic zone.
3. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 2, characterized in that: the ABR anaerobic baffled reactor also comprises a second sedimentation tank, the first anaerobic zone is connected with the second sedimentation tank through a second return pipe, and the second sedimentation tank is connected with the micro-aerobic zone through a third return pipe.
4. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 3, characterized in that: peristaltic pumps are arranged on the second return pipe and the third return pipe.
5. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 1, characterized in that: and a three-phase separation device is arranged at the top of the MBBR moving bed biofilm aerobic reactor.
6. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 1, characterized in that: and a filler is arranged in the MBBR moving bed biomembrane aerobic device.
7. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 1, characterized in that: the lower end of the MBBR moving bed biomembrane aerobic device is provided with an aeration device, and the aeration device is connected with the bottom end of the MBBR moving bed biomembrane aerobic device.
8. The device for strengthening the synchronous denitrification through the mineralization of pyridine by using nano ferroferric oxide according to claim 1, characterized in that: the water inlet pool is connected with the bottom of the UASB anoxic reactor through a peristaltic pump; the ABR anaerobic baffled reactor is connected with a first sedimentation tank through a peristaltic pump, the first sedimentation tank is connected with the lower end of the MBBR moving bed biomembrane aerobic reactor through the peristaltic pump, and the second overflow tank is connected with the bottom of the UASB anoxic reactor through the peristaltic pump.
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| CN110282742A (en) * | 2019-06-26 | 2019-09-27 | 南京润科环境有限公司 | A kind of device for strengthening pyridine mineralising simultaneous denitrification using nano ferriferrous oxide |
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| CN110282742A (en) * | 2019-06-26 | 2019-09-27 | 南京润科环境有限公司 | A kind of device for strengthening pyridine mineralising simultaneous denitrification using nano ferriferrous oxide |
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