CN115504574A - Method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under medium DO concentration condition - Google Patents
Method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under medium DO concentration condition Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- 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 invention provides a method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration, which relates to the technical field of sewage treatment and comprises the following steps: an SBR reactor; the SBR reactor is provided with a water inlet pipe, a water outlet pipe and an aeration pipe, the other end of the water inlet pipe is connected with a water inlet pump, the other end of the water outlet pipe is connected with a water outlet pump, and the other end of the aeration pipe is connected with an aerator; the inner side of the side wall of the SBR reactor is provided with a stirring device inclining downwards, a motor of the stirring device is arranged on the outer side of the SBR reactor, and a stirring paddle is arranged in the inner cavity of the SBR reactor; and a filler is filled in the inner cavity of the SBR reactor. The invention can realize the method for stabilizing nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration, so that the DO concentration diffused to an NOB layer (partial inner side) is greatly reduced, even under the condition of medium DO concentration, the NOB is in a suppression state due to lower DO concentration, and the related problems existing when a low DO concentration strategy is adopted are solved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration.
Background
Compared with the traditional nitrification-denitrification process, the anaerobic ammonia oxidation process (Anammox) has the characteristics of less aeration amount, no consumption of organic matters, low sludge yield and the like. However, most of the Anammox processes today are primarily used for high concentrations of ammonia Nitrogen (NH) 4 + N) treatment of waste waters, such as sludge waters, landfill leachate, etc., but at low NH concentrations 4 + The treatment of N-waste water is less useful, the main reason for this being the low NH concentration 4 + The nitrosation process is unstable under the condition of-N, namely Nitrite Oxidizing Bacteria (NOB) can not be eliminated or effectively inhibited, so that nitrite Nitrogen (NO) 2 - N) is further oxidized to nitrate Nitrogen (NO) 3 - -N), making the anammox reaction difficult to perform.
To address this problem, researchers have developed different methods of NOB inhibition in succession, including low Dissolved Oxygen (DO) limiting, batch FA or FNA inhibition, short sludge age (SRT) manipulation, and the like. It is to be noted that although the above methods can achieve NOB inhibition, these methods have some problems in practical use. When a low DO concentration strategy is adopted, the NOB-Nitrobacter only can inhibit NOB-Nitrobira with weak oxygen affinity, has poor inhibition effect on NOB-Nitrospira with strong oxygen affinity, and can cause the AOB activity to be greatly reduced; when the batch FA or FNA is adopted for inhibition, activated sludge needs to be periodically put into a solution containing high-concentration FA or FNA to inactivate NOB, but the operation and the operation of the system become complicated; when the short SRT operation is adopted, although NOB can be effectively eliminated, the operation can also cause that Anammox bacteria are difficult to exist in a large amount in the system, and the stability of a denitrification system is difficult to ensure; by maintaining a certain concentration of NH 4 + N, while the operation and management of the process can be effectively simplified, the effluent NH 4 + The N concentration is relatively high and it is difficult to meet the emission requirements. Therefore, it is necessary to study a novel NOB inhibition method, thereby enabling the Anammox technique to be used for low NH concentrations 4 + Treatment of N-waste water (main stream denitrification)As is possible.
Disclosure of Invention
In view of the above, the present invention provides a method for realizing stable nitrosation-anammox denitrification under the condition of medium DO concentration, so as to solve the problems associated with the strategy of low DO concentration.
The invention provides a method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration, which specifically comprises the following steps: an SBR reactor; the SBR reactor is provided with a water inlet pipe, a water outlet pipe and an aeration pipe, the other end of the water inlet pipe is connected with a water inlet pump, the other end of the water outlet pipe is connected with a water outlet pump, and the other end of the aeration pipe is connected with an aerator; the inner side of the side wall of the SBR reactor is provided with a stirring device inclining downwards, a motor of the stirring device is arranged on the outer side of the SBR reactor, and a stirring paddle is arranged in the inner cavity of the SBR reactor; and the inner cavity of the SBR reactor is filled with filler.
Optionally, the filler is taken from an aerobic tank of a municipal sewage treatment plant, the filler type is K3 or K5, and the specific surface area of the filler is 500-800 m 2 /m 3 The filling rate is controlled to be 15-35%, a certain amount of AOB, NOB and Anamox bacteria are simultaneously contained on the filler, the percentage of the AOB, NOB and Anamox bacteria is 0.02%, 0.40% and 0.61% in sequence, and the filler is inoculated sludge of a nitrosation-anaerobic ammonia oxidation process.
Alternatively, the packing rate of the packing in the SBR reactor is controlled to 30%.
Optionally, the SBR reactor sequentially carries out three stages of water inlet, reaction and water outlet at normal temperature, each three stage forms a period, the DO concentration is controlled to be 0.5-1.0 mg/L and the HRT is controlled to be 10-20 h at the starting stage of the SBR reactor; at the stable operation stage of the SBR reactor, the DO concentration is controlled to be 1.0-1.25 mg/L, and the HRT is controlled to be 5-10 h.
Optionally, the inoculated filler is pre-cultured, i.e. at ambient conditions of 25 + -0.5 deg.C, with NH 4 + N50mg/L is water inflow substrate, the load is lifted by shortening HRT (hydraulic retention time) for 20h → 5h, and DO concentration is gradually increased from 0.5mg/L to 1.0mg/L, so that AOB, NOB and Anammox bacteria form space distribution from outside to inside on the biological membrane, and nitrosation-anaerobic initiation is successfully carried outAn ammoxidation denitrification system.
Advantageous effects
1. The invention can realize a method for stabilizing nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration, namely based on the difference of AOB-Nitrosomonas and NOB-Nitrospira oxygen affinity, DO diffused to a biomembrane from a solution can be preferentially utilized by the AOB by spontaneously forming spatial distribution of the AOB outside and the NOB inside the biomembrane, so that the DO diffused to a NOB layer (the inner side) is greatly reduced, even under the condition of the medium DO concentration, the NOB is in an inhibition state due to the lower DO concentration, and the problems existing in the low DO concentration strategy are solved.
2. The NOB inhibitor has a good NOB inhibition effect, the AOB activity is enhanced, based on the difference of AOB-Nitrosomonas and NOB-Nitrospira oxygen affinity, the NOB-Nitrosomonas and NOB-Nitrospira oxygen affinity are spontaneously distributed on a biological membrane in a layered manner, and the spatial distribution can effectively inhibit NOB under the condition of medium DO concentration, simultaneously greatly enhance the AOB activity and ensure that nitrosation-anaerobic ammonia oxidation can be smoothly carried out.
3. The denitrification function microorganism is not easy to lose: the filler is used as a carrier to provide a longer sludge age SRT for the slow-proliferating denitrification functional microorganisms (AOB and Anamox bacteria), so that the SRT can be reserved as much as possible, and the stability of a denitrification system is enhanced.
4. The operation method is simple, the existing sludge (biomembrane) of the urban sewage treatment plant is taken as the inoculation source, and certain DO and NH are only maintained 4 + And effective inhibition of NOB can be realized under the condition of-N concentration, and compared with other inhibition strategies, the method can greatly simplify process operation and management.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings in the following description relate to some embodiments of the invention only and are not intended to limit the invention.
In the drawings:
FIG. 1 is a conceptual diagram of the spatial distribution of AOB, NOB and Anamox bacteria on a biofilm according to the method of the present invention.
FIG. 2 is a schematic axial view of a testing apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional structure of the experimental apparatus according to the embodiment of the present invention.
FIG. 4 is a graph showing the NOB suppression effect of the example of the present invention.
List of reference numerals
1. An SBR reactor; 2. a water inlet pipe; 3. a water outlet pipe; 4. a filler; 5. an aeration pipe; 6. a water inlet pump; 7. discharging the water pump; 8. a stirring device; 9. an aerator.
Detailed Description
In order to make the objects, solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Unless otherwise indicated, terms used herein have the ordinary meaning in the art. Like reference numerals in the drawings denote like elements.
Example 1: please refer to fig. 1 to 4:
the invention provides a method for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration, which comprises an SBR reactor 1; the SBR reactor 1 is provided with a water inlet pipe 2, a water outlet pipe 3 and an aeration pipe 5, the other end of the water inlet pipe 2 is connected with a water inlet pump 6, the other end of the water outlet pipe 3 is connected with a water outlet pump 7, and the other end of the aeration pipe 5 is connected with an aerator 9; the inner side of the side wall of the SBR reactor 1 is provided with a downward inclined stirring device 8, a motor of the stirring device 8 is arranged at the outer side of the SBR reactor 1, and a stirring paddle is arranged in the inner cavity of the SBR reactor 1; the inner cavity of the SBR reactor 1 is filled with filler 4.
Wherein the filler 4 is taken from an aerobic tank of a municipal sewage treatment plant, the type of the filler 4 is K3 or K5, and the specific surface area of the filler is 500-800 m 2 /m 3 The filling rate is controlled to be 15-35%, a certain amount of AOB, NOB and Anamox bacteria are contained on the filler, the percentage of the AOB, NOB and Anamox bacteria is 0.02%, 0.40% and 0.61% in sequence, the filler 4 is inoculated sludge of a nitrosation-anaerobic ammonia oxidation process, the excessive filler 4 can cause the poor mixing effect when the system operates, and the insufficient filler can cause the poor mixing effect when the system operatesThe processing efficiency is low.
Wherein the filling rate of the filler 4 in the SBR reactor 1 is controlled to be 30%.
Wherein, the SBR reactor 1 carries out three stages of water inlet, reaction and water outlet in sequence at normal temperature, each three stages form a period, the DO concentration is controlled to be 0.5-1.0 mg/L and the HRT is controlled to be 10-20 h at the starting stage of the SBR reactor 1; in the stable operation stage of the SBR reactor 1, the DO concentration is controlled to be 1.0-1.25 mg/L, and the HRT is controlled to be 5-10 h.
Wherein the inoculated filler 4 is pre-cultured with NH at normal temperature of 25 + -0.5 deg.C 4 + N50mg/L is a water inlet substrate, the load is lifted for 20h → 5h by shortening the HRT (hydraulic retention time), and the DO concentration is gradually increased from 0.5mg/L to 1.0mg/L, so that AOB, NOB and Anammox bacteria form a spatial distribution from outside to inside on a biological membrane, and a nitrosation-anaerobic ammonium oxidation denitrification system is successfully started;
the low DO concentration strategy is based on the AOB-Nitrosomonas oxygen half saturation constant (K) O =0.36 ± 0.40) less than NOB-Nitrobacter (K) O =0.69 ± 0.19), which makes AOB-nitrosolonas competitive by maintaining a low DO concentration (0.30-0.50 mg/L); however, it is noteworthy that the AOB and NOB discovered in mainstream systems in recent years are AOB-Nitrosomonas and NOB-Nitrospira, respectively, and have the oxygen half-saturation constant (K) of NOB-Nitrospira O =0.19 ± 0.15) is significantly smaller than Nitrosomonas, which causes certain difficulty in achieving NOB inhibition by adopting a low DO strategy, the method for stabilizing nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration of the invention is proposed for two microorganisms, namely AOB-Nitrosomonas and NOB-Nitrospira, because AOB-Nitrosomonas has weaker oxygen affinity than NOB-Nitrospira, AOB and NOB tend to be distributed on a biological membrane in a layered way, namely AOB is distributed on the outer side of the biological membrane, NOB is arranged on the inner side, DO diffused to the biological membrane from solution is preferentially utilized by AOB under the spatial distribution, the DO concentration diffused to a NOB layer is greatly reduced, and the activity of AOB can be greatly enhanced while NOB is effectively inhibited, thereby greatly improving the NOB denitrification capability of a nitrosation-anaerobic ammonia oxidation treatment systemIn the case of Anammox bacteria, because it is a strict anoxic microorganism, it must be distributed on the innermost side of the biological membrane, where the DO concentration on the inner side is difficult to inhibit the Anammox bacteria through the consumption of the DO by the outer nitrifying bacteria, which creates good conditions for enrichment culture and Anammox denitrification of the Anammox bacteria.
The SBR reactor 1 is provided with a water inlet pipe 2, wastewater to be treated is injected into the SBR reactor 1 through a water inlet pump 6, a filler 4 and the wastewater are fully mixed through a stirring device 8, and after the reaction is finished, the treated wastewater is pumped out of a water outlet pipe 3 through a water outlet pump 7; and after the water pumping is finished, entering the next reaction period.
Example 2:
this example uses a laboratory-made NH-containing 4 + -N wastewater at a concentration of 50mg/L;
this example uses the apparatus of example 1 and the denitrification process designed by this invention to treat NH-containing gas 4 + Denitrogenation of N-waste water, wherein the effective volume of SBR reactor 1 is 5L, and the AOB, anammox and NOB activities of filler 4 used are 2987.29mgNH in sequence 4 + -N/(m 2 ·d)、742.68mgNH 4 + -N/(m 2 D) and 1400.00mgNO 2 - -N/(m 2 D), controlling the filling rate to be 30% and the HRT to be 5h, measuring the effluent quality of the device every two days and calculating the TN removal rate.
The nitrogen component concentrations of the inlet and outlet water during the operation of the denitrification device of the embodiment are shown in Table 1, the final TN removal rate reaches 61.68 +/-2.77 percent, and the outlet water NH 4 + the-N and TN concentrations were 5.34. + -. 2.25mg/L and 19.16. + -. 1.57mg/L, respectively, thus demonstrating that low NH levels can be achieved by the present experimental apparatus and method 4 + And stable nitrosation-anaerobic ammoxidation denitrification is realized under the condition of-N concentration.
TABLE 1 example 2SBR reactor Water quality parameters
| Name of item | NH 4 + -N(mg/L) | NO 2 - -N(mg/L) | NO 3 - -N(mg/L) | Sum of Total Nitrogen (mg/L) |
| Concentration of influent water | 50 | 0 | 0 | 0 |
| Concentration of effluent | 5.34±2.25 | 1.33±0.89 | 12.36±1.76 | 19.16±1.57 |
| Removal Rate (%) | 89.96±4.32 | / | / | 61.68±2.77 |
Example 3:
this example gives the inhibitory effect of NOB in example 2;
to clarify the inhibitory contribution of AOB to NOB production by preferential use of DO, it was verified by batch experiments (table 2). As can be seen from the table, in test No. 1, only NO was added 2 - N, active microorganism is NOB only, while Anammox and AOB lack NH 4 + N, and thus the NOB activity measured at this time was taken as the background value, in test 2# although NH was added at the same time 4 + -N and NO 2 - N, but the Addition of Thiourea (ATU) caused the AOB to be in an inhibitory state, thus, if the working activity of NOB in test # 2 was reduced compared to test # 1, this would indicate the presence of Anammox and NOB on the biofilm versus NO 2 - Competition for-N, in trial # 3, NOB, anammox and AOB are all active, i.e., if NOB work less active, it is likely that they contribute jointly to AOB and Anammox competition with NOB.
TABLE 2 NOB inhibition mechanism batch test
The NOB inhibition effect in the batch test is shown in figure 4, and the figure shows that the NOB activity reduction range in the test 2# is very small and is only 42.65mgN/m compared with the test 1# 2 D, indicates the competition of Anammox bacteria for NO with NOB 2 - -N contributes less to NOB inhibition. In test No. 3, the NOB activity was greatly reduced to 573.33mgN/m 2 The result shows that the competition of AOB and NOB for DO has important contribution in NOB inhibition, namely the NOB inhibition is realized through the spatial distribution of microorganisms on a biological membrane, so that the stable nitrosation anaerobic ammonia oxidation denitrification is feasible.
Finally, it should be noted that, when describing the positions of the components and the matching relationship therebetween, the present invention is usually illustrated by one/a pair of components, however, it should be understood by those skilled in the art that such positions, matching relationship, etc. are also applicable to other/other pairs of components.
The above description is intended to be illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.
Claims (5)
1. A test device for realizing stable nitrosation-anaerobic ammonia oxidation denitrification under the condition of medium DO concentration is characterized by comprising: an SBR reactor (1); the SBR reactor (1) is provided with a water inlet pipe (2), a water outlet pipe (3) and an aeration pipe (5), the other end of the water inlet pipe (2) is connected with a water inlet pump (6), the other end of the water outlet pipe (3) is connected with a water outlet pump (7), and the other end of the aeration pipe (5) is connected with an aerator (9); the inner side of the side wall of the SBR reactor (1) is provided with a stirring device (8) which inclines downwards, a motor of the stirring device (8) is arranged on the outer side of the SBR reactor (1), and a stirring paddle is arranged in the inner cavity of the SBR reactor (1); and a filler (4) is filled in the inner cavity of the SBR reactor (1).
2. The test device for realizing stable nitrosation-anammox denitrification under the condition of medium DO concentration according to claim 1, wherein: the filler (4) is taken from an aerobic tank of a municipal sewage treatment plant, the type of the filler (4) is K3 or K5, and the specific surface area of the filler is 500-800 m 2 /m 3 The filling rate is controlled to be 15-35%, a certain amount of AOB, NOB and Anamox bacteria are simultaneously contained on the filler, the percentage of the AOB, NOB and Anamox bacteria is 0.02%, 0.40% and 0.61% in sequence, and the filler (4) is inoculated sludge of a nitrosation-anaerobic ammonia oxidation process.
3. The test device for realizing stable nitrosation-anammox denitrification under the condition of medium DO concentration according to claim 1, wherein: the filling rate of the filler (4) in the SBR reactor (1) is controlled to be 30 percent.
4. The method of claim 1 for achieving stable nitrosation-anammox denitrogenation at moderate DO concentrations, wherein: the SBR reactor (1) sequentially carries out three stages of water inlet, reaction and water outlet at normal temperature, each three stage forms a period, the DO concentration is controlled to be 0.5-1.0 mg/L and the HRT is controlled to be 10-20 h at the starting stage of the SBR reactor (1); in the stable operation stage of the SBR reactor (1), the DO concentration is controlled to be 1.0-1.25 mg/L, and the HRT is controlled to be 5-10 h.
5. The method of claim 2, wherein the method comprises the steps of: the inoculated filler (4) is pre-cultured, i.e. at normal temperature (25 +/-0.5 ℃) with NH 4 + N (50 mg/L) is a water inlet matrix, the load is increased by shortening the HRT (hydraulic retention time) to be 20h → 5h, and the DO concentration is gradually increased from 0.5mg/L to 1.0mg/L, so that AOB, NOB and Anammox bacteria form a spatial distribution from outside to inside on a biological membrane, and a nitrosation-anaerobic ammonium oxidation denitrification system is successfully started.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140069864A1 (en) * | 2012-09-13 | 2014-03-13 | Hampton Roads Sanitation District | Method and apparatus for nitrogen removal in wastewater treatment |
| CN104528938A (en) * | 2014-12-30 | 2015-04-22 | 大连理工大学 | Method for starting SNAD process based on non-woven fabric ring packing |
| CN110054284A (en) * | 2019-05-31 | 2019-07-26 | 苏州科技大学 | The semi-hitrosation technique of municipal sewage treatment starts and control method |
| CN209193639U (en) * | 2018-11-27 | 2019-08-02 | 河北大学 | A kind of half short distance nitration-anaerobic ammoxidation series connection sewage disposal system |
| CN210367146U (en) * | 2019-04-16 | 2020-04-21 | 清华大学深圳研究生院 | Integrated short-cut nitrification-anaerobic ammonia oxidation sewage treatment domestication device |
| CN112645446A (en) * | 2020-10-20 | 2021-04-13 | 天津城建大学 | Starting method of one-stage SBR-anammox denitrification system |
| CN112707505A (en) * | 2020-12-15 | 2021-04-27 | 北京工业大学 | Anaerobic ammonia oxidation reaction system based on granular sludge enhanced separation device and operation method |
| CN113354076A (en) * | 2021-01-11 | 2021-09-07 | 南京富磁仪器设备有限公司 | Low-temperature low-ammonia nitrogen sewage synchronous nitrosation-Anammox device based on magnetic induction heat effect and application thereof |
-
2022
- 2022-10-13 CN CN202211254697.6A patent/CN115504574B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140069864A1 (en) * | 2012-09-13 | 2014-03-13 | Hampton Roads Sanitation District | Method and apparatus for nitrogen removal in wastewater treatment |
| CN104528938A (en) * | 2014-12-30 | 2015-04-22 | 大连理工大学 | Method for starting SNAD process based on non-woven fabric ring packing |
| CN209193639U (en) * | 2018-11-27 | 2019-08-02 | 河北大学 | A kind of half short distance nitration-anaerobic ammoxidation series connection sewage disposal system |
| CN210367146U (en) * | 2019-04-16 | 2020-04-21 | 清华大学深圳研究生院 | Integrated short-cut nitrification-anaerobic ammonia oxidation sewage treatment domestication device |
| CN110054284A (en) * | 2019-05-31 | 2019-07-26 | 苏州科技大学 | The semi-hitrosation technique of municipal sewage treatment starts and control method |
| CN112645446A (en) * | 2020-10-20 | 2021-04-13 | 天津城建大学 | Starting method of one-stage SBR-anammox denitrification system |
| CN112707505A (en) * | 2020-12-15 | 2021-04-27 | 北京工业大学 | Anaerobic ammonia oxidation reaction system based on granular sludge enhanced separation device and operation method |
| CN113354076A (en) * | 2021-01-11 | 2021-09-07 | 南京富磁仪器设备有限公司 | Low-temperature low-ammonia nitrogen sewage synchronous nitrosation-Anammox device based on magnetic induction heat effect and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| KAI LV.ETC, JOURNAL OF WATER PROCESS ENGINEERING * |
| 周梦雨等, 中国环境科学 * |
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