CN204958514U - Realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast - Google Patents
Realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast Download PDFInfo
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- CN204958514U CN204958514U CN201520710866.1U CN201520710866U CN204958514U CN 204958514 U CN204958514 U CN 204958514U CN 201520710866 U CN201520710866 U CN 201520710866U CN 204958514 U CN204958514 U CN 204958514U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model provides a realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast, belongs to the waste water treatment technology field. The reaction unit who adopts cylinder type and circular cone type to combine, the district that intakes of circular cone type promptly, supporting layer, filter material layer and the clear water of cylinder type are distinguished and the play basin, are equipped with aeration head and aeration disc, and the manometer is equipped with respectively at the bottom and the top on filter material layer, while is the system of intaking, play water system, backpurge system, aeration systems, temperature control system in addition. Whole reaction sequence's temperature control is at 30 -35 DEG C, the control of reactor dissolved oxygen is at 1 -2mgL, and change back flush cycle and the intensity that bological aerated filter was controlled to the characteristic through the pressure value. This device has that area is little, resistance impact load capacity is strong, no sludge bulking problem, energy saving and consumption reduction, advantage such as with low costs.
Description
Technical field
The utility model relates to a kind of sewage disposal technology, specifically high ammonia-nitrogen wastewater realizes the device of short distance nitration, especially in BAF, realize device and the operation method of short distance nitration, be applicable to the denitrogenation processing of high ammonia-nitrogen wastewater, be conducive to cost-effective control water body nitrate pollution, improve sewage water denitrification efficiency, save denitrogenation cost, belong to technical field of waste water processing.
Background technology
Along with the develop rapidly of industrial or agricultural, industry and Water Consumption in Agriculture increase increasingly, and water resources is limited, and thus environmental problem also receives the concern of the mankind day by day, and wherein the eutrophication of water surrounding causes the great attention of people gradually.Tradition nitration denitrification is the sewage denitrification method generally adopted at present.Tradition nitrification is carried out in two steps: first, under the effect of ammonia oxidizing bacteria (AOB), make mineralized nitrogen be cultured water; Then, cultured water, under the effect of nitrite-oxidizing bacteria (NOB), is further converted to nitrate nitrogen.Denitrification be anoxic and there is organic carbon source condition under, nitrate nitrogen and cultured water, under the effect of denitrifying bacteria, are reduced to gaseous nitrogen (N
2) process.
Short range biological denitrification technology biological nitrification process is controlled in the ammonia oxidation stage, then directly carry out denitrification, compared with traditional nitration denitrification denitrogenation technique, the energy consumption of about 25% (in oxygen) can be saved, and 1.5-2 denitrification rate doubly can be improved.Realize short-cut nitrification and denitrification raising nitric efficiency, the saving energy and carbon source are had great importance, but be still difficult to realize stable short distance nitration at present.
Since the seventies in last century, biomembrane process becomes the study hotspot of numerous investigators and engineers.Biological filter is the traditional technology that biomembrance process is disposed of sewage, and grows up, prior to activated sludge process 19 end of the centurys.BAF is a kind of variant of ordinary biofilter, develops into series comprehensive technique gradually from single technique, has and removes SS, COD, BOD
5, nitrated, denitrogenation effect, its maximum feature integrates bio-oxidation and retains suspended solids, saves follow-up secondary sedimentation basins, under the prerequisite of guarantee treatment effect, treatment process simplified.In addition, biological aerated filter process organism volumetric loading is high, and hydraulic load is large, and hydraulic detention time is short, and required initial cost is few, energy consumption and running cost low, this Process for Effluent water quality is good simultaneously.Therefore Fast implementation and the stability problem of studying BAF short distance nitration have important theory significance and application prospect.
Utility model content
The purpose of this utility model is to provide a kind of device realizing high ammonia-nitrogen wastewater BAF short distance nitration fast, by applying the various regulate and control method being conducive to realizing BAF short distance nitration, provide optimum environmental control parameters, reach the effect realizing BAF short distance nitration fast.
The technical solution of the utility model is:
A kind of device realizing high ammonia-nitrogen wastewater BAF short distance nitration fast, it is characterized in that, be provided with the reaction unit that cylindrical reactor and pyramid type reactor combine, water inlet system, outlet system, back-purge system, aerating system, temperature control system, the lower end of the reaction unit (24) that cylindrical reactor and pyramid type reactor combine is pyramid type inhalant region, the supporting layer being followed successively by cylinder shape above of pyramid type inhalant region, filter material layer and clear water zone, be provided with effluent trough (17) the i.e. top of cylindrical reactor above cylinder shape clear water zone and be provided with effluent trough (17), effluent trough (17) is provided with venting port (6), the bottom of cylinder shape filter material layer and top are equipped with tensimeter 1 (4) and tensimeter 2 (5) respectively, multiple thief hole (16) is provided with in cylinder shape filter material layer part, pyramid type inhalant region is built with an aeration disk (15), cylinder shape clear water zone part is equipped with an aeration head (21), water inlet system is communicated with pyramid type inhalant region by inlet chest (1), water inlet pipe (2), peristaltic pump (3), valve successively, the top of cylindrical reactor is communicated with water tank/back flushing inlet chest (8) by effluent trough (17), rising pipe (7) successively, water tank/back flushing inlet chest (8) is communicated with pyramid type inhalant region by backwash pump (9), spinner-type flowmeter (10), valve, effluent trough (17) is communicated with back flushing water tank (12) by back flushing rising pipe (11), air compressor (13) is communicated with aeration disk (15) by inlet pipe 1 (18), glass rotameter 1 (14), valve, and air compressor (13) is communicated with aeration head (21) by inlet pipe 2 (19), glass rotameter 2 (20), valve simultaneously, temperature control unit (23) regulates reaction unit (24) temperature by the heating zone (22) outside cylindrical reactor.
Clear water zone is communicated with cylinder shape filter material layer by valve, return line (25), reflux pump (26).
Suction culvert is also provided with spinner-type flowmeter.
The filtrate of reactor filter material layer is volcanics, its particle diameter is 4-6mm, and this device unloading phase and the back flushing stage adopt bottom aeration mode regulate aeration rate, the mode that normal operating phase adopts bottom to be combined with top aeration regulates aeration rate, and then controls dissolved oxygen concentration in reactor.
The operation method of above-mentioned high ammonia-nitrogen wastewater BAF short-range nitrifying device, is characterized in that being provided with following steps:
1) unloading phase: open inlet valve, to be divided from pyramid type reactor section by peristaltic pump be pumped into reactor by taking from the active sludge of second pond and pending the high ammonia-nitrogen wastewater ratio of 2:1 (preferably by volume), make its complete submergence filter material layer; Open temperature control unit, temperature controls at 30-35 DEG C; Open air compressor, gas stream is made to enter into reactor (the corresponding gas flow of the every 18-19L of preferred reactor apparatus volume controls at about 25L/h) by aeration disk after glass rotameter 1, enter vexed exposing to the sun the stage, DO, pH and ORP in this stage continuous monitor system, when " ammonia paddy " appears in pH, or when ORP rises suddenly, close aeration, a vexed end cycle that exposes to the sun, changes sewage and enters next and vexedly to expose to the sun the cycle; 7 days and so forth, the mode of Continuous Flow is adopted to intake afterwards; 8-11 days, with the design current velocity water inlet of 1/3; 12-15 days, with the design current velocity water inlet of 2/3; 16-19 days, intakes with design current velocity; When this three kinds of Continuous Flow water inlets, still adopt the aeration mode of bottom aeration disk, aeration rate is 10Qm
3/ h, Q are flooding velocity, after this enter into normal operating phase;
Design current velocity water inlet described above preferably makes NH
4 +-N load is 0.6-0.8kg/ (m
3d).
2) normal operating phase: open inlet valve, then open into water peristaltic pump, pending high ammonia-nitrogen wastewater is entered into aeration filter material layer continuously by bottom pyramid type, pass through filter material layer, under the effect of ammonia oxidizing bacteria, ammonia-state nitrogen is oxidized to nitrite nitrogen, flows through rising pipe drain into water tank/back flushing inlet chest (8) from effluent trough (7); This operation phase, open air compressor, make gas by inlet pipe 1 and inlet pipe 2, after flowing through glass rotameter 1 and glass rotameter 2, carry out aeration by aeration disk and aeration head, maintaining dissolved oxygen concentration in reactor by regulating two glass rotameters is 1-2mg/L; Backflow sewage is again entered reactor after reflux pump by return line bottom pyramid type;
3) the back-flushing operation stage: bottom the pressure difference and reactor filter material layer of reactor filter material layer and when the pressure difference at top is greater than 1m, close inlet valve and peristaltic pump, carry out back flushing, gas punching is undertaken by air compressor, water punching is undertaken by backwash pump, the mixed punching of air water is carried out by air compressor and backwash pump simultaneously, and gas punching is all by bottom aeration disk aeration; Backwash mode carries out gas punching, the mixed punching of air water, water punching successively.
Preferred backwash mode is: gas rushes 5 minutes, and intensity is 10L/ (m
2s); Air water mixes punching 5 minutes, and air water intensity is 10L/ (m
2s); Water rushes 10 minutes, and intensity is 10L/ (m
2s).
4) back flushing is back to step 2 after terminating), i.e. normal operating phase, continues process.
The realization condition of short range biological denitrification technique is the optimization of nitrifying bacteria community (mainly comprising ammonia oxidizing bacteria and the large bacterioid of nitrite-oxidizing bacteria two) structure in itself, namely eliminate the nitrite-oxidizing bacteria in system as far as possible, retain ammonia oxidizing bacteria.
Provided by the utility model realize high ammonia-nitrogen wastewater BAF short distance nitration fast device and operation method be by raising ammonia oxidation bacteria growth velocity, reduce NOB growth velocity, namely be conducive to most enriching ammonia oxidation bacteria, eliminate the combined factors of nitrite-oxidizing bacterium together, specifically comprise:
1) the high the concentration of free ammonia in high ammonia-nitrogen wastewater, is conducive to the enrichment of ammonia oxidizing bacteria.When the concentration of free ammonia is greater than 0.6mg/l, the activity of nitrite-oxidizing bacteria almost all can be suppressed; When the concentration of free ammonia is greater than 40mg/l, just can the serious activity suppressing ammonia oxidizing bacteria.Therefore, the high free ammonia in high ammonia-nitrogen wastewater can suppress the activity of nitrite-oxidizing bacteria, thus is conducive to the enrichment of ammonia oxidizing bacteria.
2) system operating temperature controls at 30-35 DEG C, is beneficial to enriching ammonia oxidation bacterium.Under temperature condition more than 30 DEG C, the growth velocity of ammonia oxidizing bacteria is greater than the growth velocity of nitrite-oxidizing bacteria, and system is run for a long time at this temperature, is conducive to enriching ammonia oxidation bacterium.
3) Systematical control is under dissolved oxygen concentration on the low side, is conducive to enriching ammonia oxidation bacterium.According to the physiological property of two quasi-microorganisms, at aerobic stage, because the affinity of ammonia oxidizing bacteria to oxygen is stronger than nitrite-oxidizing bacteria, the oxygen saturation constant of ammonia oxidizing bacteria and nitrite-oxidizing bacteria is respectively 0.2-0.4mg/L and 1.2-1.5mg/L.Therefore, under lower dissolved oxygen concentration, the growth velocity of ammonia oxidizing bacteria is greater than the growth velocity of nitrite-oxidizing bacteria.Run with this understanding for a long time, be conducive to enriching ammonia oxidation bacterium.
4) back flushing is moderately and at the right moment carried out to BAF, be conducive to enriching ammonia oxidation bacterium.Generation time of ammonia oxidizing bacteria (i.e. bacterium double time) is shorter than the generation time of nitrite-oxidizing bacteria.Therefore back flushing moderately and at the right moment can make nitrite-oxidizing bacteria also fully breeding be just exhausted from system, thus ensure that the ratio of ammonia oxidizing bacteria in whole nitrifying bacteria community improves constantly, and then superseded nitrite-oxidizing bacteria.
5) system water inlet pH value controls within the scope of 7.5-8.5, is conducive to enriching ammonia oxidation bacterium.The optimal pH scope difference to some extent of ammonia oxidizing bacteria and nitrite-oxidizing bacteria, is respectively 7.0-8.5 and 6.5-7.5.Therefore run under these conditions for a long time, be conducive to the enrichment of ammonia oxidizing bacteria.
6) carry out intermittent aeration unloading phase, be conducive to the competitive power improving ammonia oxidizing bacteria.According to the physiological property of two quasi-microorganisms, aerobic stage ammonia oxidizing bacteria after each anoxic phases always shifts to an earlier date activity recovery than nitrite-oxidizing bacterium, the growth velocity of such ammonia oxidizing bacteria just higher than the growth velocity of nitrite-oxidizing bacterium, decreases the growth machine meeting of nitrite-oxidizing bacteria at aerobic stage.
The device of high ammonia-nitrogen wastewater BAF short distance nitration of the present utility model and operation method with existing process high ammonia-nitrogen wastewater treatment technology compared with, there is following advantages:
1) energy conservation and consumption reduction effects is good.Most of expense of sewage work is used for power consumption and medicine consumption, but ammonium oxidation only need be become cultured water by short distance nitration, saves the aeration energy consumption of 25%, namely reduces power consumption, and the energy consumption of sewage work is reduced.
2) nitrite accumulation rate is high.Make full use of the free ammonia in high ammonia-nitrogen wastewater due to these apparatus and method, and by regulating the method for aeration control dissolved oxygen, fully promote the accumulation of nitrite.
3) reliability is high.BAF capacity of resisting impact load is strong, and without sludge bulking problem, for some time does not operate, and microorganism can not be run off, and can return to normal processing level in several days.
4) capital cost and working cost low.The capital cost of BAF and working cost are significantly less than the expense of traditional conventional second-stage treatment technology.
5) simple flow.BAF integrates filtration, biological adsorption and bio-oxidation, can play the effect of common aeration tank, second pond and sand filter simultaneously, Physical entrapment and biological treatment is completed in same reactor.
6) less pond holds and takes up an area.The floor space of BAF is only about the 1/10-1/5 of conventional two stage biological process, this point is for coastal cities, or development area costly, soil and economically developed area significant, and for the situation of some plant area's land used anxieties, also can to achieve a solution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 inlet chest; 2 water inlet pipes; 3 peristaltic pumps; 4 tensimeters 1; 5 tensimeters 2; 6 venting ports; 7 rising pipes; 8 water tanks/back flushing inlet chest; 9 backwash pumps; 10 spinner-type flowmeters; 11 back flushing rising pipes; 12 back flushing water tanks; 13 air compressor; 14 glass rotameters 1; 15 aeration disks; 16 thief holes; 17 effluent troughs; 18 inlet pipe 1; 19 inlet pipe 2; 20 glass rotameters 2; 21 aeration heads; 22 heating zones; 23 temperature control units; 24 cylinder shapes+pyramid type reaction unit; 25 return lines; 26 reflux pumps.
Fig. 2 embodiment Process for Effluent design sketch.
Embodiment
Below in conjunction with drawings and Examples, the utility model is explained, but the utility model is not limited to following examples.
Embodiment 1:
See accompanying drawing, realize the device of high ammonia-nitrogen wastewater BAF short distance nitration fast: the reaction unit, water inlet system, outlet system, back-purge system, aerating system, the temperature control system that are provided with cylinder shape and pyramid type combination.The reaction unit 24 that cylinder shape and pyramid type combine is provided with conical inhalant region, the supporting layer of cylinder shape, filter material layer and clear water zone and effluent trough 17, effluent trough 17 is provided with venting port 6, cylindrical reactor part is provided with filter material layer, and in the bottom of filter material layer and top, tensimeter 14 and tensimeter 25 are housed respectively, 8 thief holes 16 are provided with in the filter material layer part of reactor, pyramid type reactor is built with an aeration disk 15, and the clear water zone part above cylindrical reactor is equipped with an aeration head 21; Water inlet system is communicated with pyramid type inhalant region by inlet chest 1, water inlet pipe 2, peristaltic pump 3, valve; The top of cylindrical reactor is communicated with water tank/back flushing inlet chest 8 by effluent trough 17, rising pipe 7; Water tank/back flushing inlet chest 8 is communicated with pyramid type reactor part by backwash pump 9, spinner-type flowmeter 10, valve; Effluent trough 17 is communicated with back flushing water tank 12 by back flushing rising pipe 11; Air compressor 13 is communicated with aeration head 21 with aeration disk 15 with glass rotameter 220, valve with inlet pipe 219, glass rotameter 114 respectively by inlet pipe 118; Temperature control unit 23 regulates reaction unit temperature by heating zone 22.The filtrate of reactor filter material layer is volcanics, its particle diameter is 4-6mm, and the mode of the unloading phase of this device and back flushing stage employing bottom aeration regulates aeration rate, and the mode that normal operating phase adopts bottom to be combined with top aeration regulates aeration rate, and then controls dissolved oxygen concentration in reactor.
The operation method of high ammonia-nitrogen wastewater BAF short-range nitrifying device, using from water distribution as experimental subjects: NH
4 +-N=320mg/L, pH=7.5-8.5, selected aeration and biological reaction unit volume is 18.5L, and operation method completes according to the following steps:
1), unloading phase: open inlet valve, the active sludge of second pond and the pending high ammonia-nitrogen wastewater ratio in 2:1 of taking to be divided from pyramid type reactor section by peristaltic pump and is pumped into reactor, make its complete submergence filter material layer; Open temperature control unit, temperature controls at 30-35 DEG C; Open air compressor, make gas stream enter into reactor by aeration disk after glass rotameter 1, gas flow controls at about 25L/h, enters vexed exposing to the sun the stage.DO, pH and ORP in this stage continuous monitor system, when " ammonia paddy " appears in pH, or when ORP rises suddenly, close aeration, a vexed end cycle that exposes to the sun, and changes sewage and enter next and vexedly to expose to the sun the cycle.。7 days and so forth, the mode of Continuous Flow is adopted to intake afterwards.8-11 days, intakes with the flow velocity of 0.04m/h, NH
4 +-N load is 0.22kg/ (m
3d); 12-15 days, intakes with the flow velocity of 0.08m/h, NH
4 +-N load is 0.51kg/ (m
3d); 16-19 days, intakes with the design current velocity of 0.12m/h, NH
4 +-N load is 0.77kg/ (m
3d).When this three kinds of Continuous Flow water inlets, still adopt the aeration mode of bottom aeration disk, aeration rate is 10Qm
3/ h (Q is flooding velocity), after this enters into normal operating phase.
2) normal operating phase: open inlet valve, then open into water peristaltic pump, regulate spinner-type flowmeter, flooding velocity is 1.85L/h, pending high ammonia-nitrogen wastewater is entered into BAF continuously by bottom pyramid type, by filter material layer, under the effect of ammonia oxidizing bacteria, ammonia-state nitrogen is oxidized to nitrite nitrogen, flows through rising pipe drain into water tank from effluent trough; This operation phase, open air compressor, make gas by inlet pipe 1 and inlet pipe 2, after flowing through glass rotameter 1 and glass rotameter 2, carry out aeration by aeration disk and aeration head to clear water zone, maintaining dissolved oxygen concentration in reactor by regulating two glass rotameters is 1-2mg/L; Backflow sewage is again entered reactor after reflux pump by return line bottom pyramid type.
3) the back-flushing operation stage: bottom the pressure difference and reactor filter material layer of reactor filter material layer and when the pressure difference at top is greater than 1m, close inlet valve and peristaltic pump, carry out back flushing, gas punching is undertaken by air compressor, water punching is undertaken by backwash pump, the mixed punching of air water is carried out by air compressor and backwash pump simultaneously, and gas punching is all by bottom aeration disk aeration.Backwash mode is: gas rushes 5 minutes, and intensity is 10L/ (m
2s); Air water mixes punching 5 minutes, and air water intensity is 10L/ (m
2s); Water rushes 10 minutes, and intensity is 10L/ (m
2s).
4) back flushing is back to step 2 after terminating), i.e. normal operating phase.
Adopt above-mentioned Process for Effluent effect, see Fig. 2.
Claims (3)
1. one kind realizes the device of high ammonia-nitrogen wastewater BAF short distance nitration fast, it is characterized in that, be provided with the reaction unit that cylindrical reactor and pyramid type reactor combine, water inlet system, outlet system, back-purge system, aerating system, temperature control system, the lower end of the reaction unit (24) that cylindrical reactor and pyramid type reactor combine is pyramid type inhalant region, the supporting layer being followed successively by cylinder shape above of pyramid type inhalant region, filter material layer and clear water zone, be provided with effluent trough (17) the i.e. top of cylindrical reactor above cylinder shape clear water zone and be provided with effluent trough (17), effluent trough (17) is provided with venting port (6), the bottom of cylinder shape filter material layer and top are equipped with tensimeter 1 (4) and tensimeter 2 (5) respectively, multiple thief hole (16) is provided with in cylinder shape filter material layer part, pyramid type inhalant region is built with an aeration disk (15), cylinder shape clear water zone part is equipped with an aeration head (21), water inlet system is communicated with pyramid type inhalant region by inlet chest (1), water inlet pipe (2), peristaltic pump (3), valve successively, the top of cylindrical reactor is communicated with water tank/back flushing inlet chest (8) by effluent trough (17), rising pipe (7) successively, water tank/back flushing inlet chest (8) is communicated with pyramid type inhalant region by backwash pump (9), spinner-type flowmeter (10), valve, effluent trough (17) is communicated with back flushing water tank (12) by back flushing rising pipe (11), air compressor (13) is communicated with aeration disk (15) by inlet pipe 1 (18), glass rotameter 1 (14), valve, and air compressor (13) is communicated with aeration head (21) by inlet pipe 2 (19), glass rotameter 2 (20), valve simultaneously, temperature control unit (23) regulates reaction unit (24) temperature by the heating zone (22) outside cylindrical reactor,
Clear water zone is communicated with cylinder shape filter material layer by valve, return line (25), reflux pump (26).
2. device according to claim 1, is characterized in that: the filtrate of reactor filter material layer is volcanics, and its particle diameter is 4-6mm.
3. device according to claim 1, is characterized in that: on suction culvert, be also provided with spinner-type flowmeter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710866.1U CN204958514U (en) | 2015-09-14 | 2015-09-14 | Realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710866.1U CN204958514U (en) | 2015-09-14 | 2015-09-14 | Realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast |
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| CN204958514U true CN204958514U (en) | 2016-01-13 |
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ID=55053594
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| CN201520710866.1U Expired - Fee Related CN204958514U (en) | 2015-09-14 | 2015-09-14 | Realize nitrifying device of high ammonia -nitrogen concentration waste water bological aerated filter short distance fast |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110462A (en) * | 2015-09-14 | 2015-12-02 | 北京工业大学 | Device and method for quickly achieving shortcut nitrification of high-ammonia-nitrogen waste water biological aerated filter |
| CN107265638A (en) * | 2017-06-30 | 2017-10-20 | 西安建筑科技大学 | Integral type high ammonia-nitrogen wastewater biological removal reaction unit |
-
2015
- 2015-09-14 CN CN201520710866.1U patent/CN204958514U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110462A (en) * | 2015-09-14 | 2015-12-02 | 北京工业大学 | Device and method for quickly achieving shortcut nitrification of high-ammonia-nitrogen waste water biological aerated filter |
| CN105110462B (en) * | 2015-09-14 | 2018-02-23 | 北京工业大学 | A kind of quick device and method for realizing high ammonia-nitrogen wastewater BAF short distance nitration |
| CN107265638A (en) * | 2017-06-30 | 2017-10-20 | 西安建筑科技大学 | Integral type high ammonia-nitrogen wastewater biological removal reaction unit |
| CN107265638B (en) * | 2017-06-30 | 2020-12-25 | 西安建筑科技大学 | Integrated high ammonia-nitrogen wastewater biological removal reaction device |
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Granted publication date: 20160113 Termination date: 20200914 |