CN115385447A - Method for treating landfill leachate - Google Patents

Method for treating landfill leachate Download PDF

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Publication number
CN115385447A
CN115385447A CN202111019714.3A CN202111019714A CN115385447A CN 115385447 A CN115385447 A CN 115385447A CN 202111019714 A CN202111019714 A CN 202111019714A CN 115385447 A CN115385447 A CN 115385447A
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effluent
anaerobic
sulfur
nitrogen
bacteria
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刘建勇
李燕燕
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University of Shanghai for Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/101Sulfur compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06Contaminated groundwater or leachate

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The invention discloses a method for treating landfill leachate, which comprises the following steps: 1) Anaerobic digestion treatment is carried out on the landfill leachate by using anaerobic methanogens to obtain methane and anaerobic digestion effluent; 2) Treating anaerobic digested effluent by sulfur-based autotrophic denitrifying bacteria to obtain nitrogen and sulfur-based autotrophic denitrifying effluent; 3) Treating the sulfur-based autotrophic denitrification effluent by using aerobic ammonia oxidizing bacteria to obtain shortcut nitrification effluent; 4) Treating the partial nitrification effluent by using anaerobic ammonium oxidation bacteria to generate nitrogen, elemental sulfur and anaerobic ammonium oxidation effluent; 5) Mixing a part of the anaerobic ammonia oxidation effluent with the anaerobic digestion effluent, continuously treating by using sulfur-based autotrophic denitrifying bacteria, and filtering the rest of the anaerobic ammonia oxidation effluent to remove the rest organic matters and nitrogen-containing compounds. The method provided by the invention realizes the denitrification and desulfurization of the landfill leachate, reduces the aeration energy consumption in the short-cut nitrification stage, and saves the electron donor and the operation cost.

Description

Method for treating landfill leachate
Technical Field
The invention relates to the field of sewage treatment, and relates to a method for treating landfill leachate.
Background
Along with the improvement of the urbanization level of China in recent years, the yield of the landfill leachate is increased sharply. Landfill leachate is a high concentration organic wastewater produced by compaction, fermentation and precipitation seepage of municipal solid waste during stacking and landfill. The water quality of the fresh leachate is characterized by containing high-concentration ammonia nitrogen, organic matters and sulfate, wherein the ammonia nitrogen and the organic matters can ensure that the water body is anoxic, the water quality is deteriorated and the water body is eutrophicated, the sulfate can be finally deposited at the water bottom, a large amount of sulfate reducing bacteria in a deposition layer can reduce the sulfate into sulfur ions, the sulfur ions can be combined with metal ions in the deposition layer to generate a large amount of metal sulfides, the metal sulfides are very difficult to decompose, and finally the metal sulfides can exist in the bottom deposition layer of the water body for a long time, so the wastewater in the landfill leachate needs to be treated before being discharged into the water body.
The traditional nitrification/denitrification process can oxidize ammonia nitrogen into nitrate nitrogen and then reduce the nitrate nitrogen into nitrogen by taking organic matters as electron donors to effectively denitrify the nitrogen, but a large amount of residual sludge can be caused due to the additional carbon source and large demand on aeration. Compared with the traditional nitrification/denitrification process, the shortcut nitrification-anaerobic ammonia oxidation process (PN-ANAMMOX) can reduce aeration requirements by 63 percent, carbon source requirements by 100 percent and sludge yield by 90 percent.
However, the anammox process also has problems that limit its wide industrial application, the first problem is that the theoretical total nitrogen removal is about 89%, 11% of nitrogen remains as nitrate, and thus deep denitrification is required; the second problem is that ammonia nitrogen is required to be converted into nitrite as a substrate through a short-cut nitrification process in a landfill leachate system, the control factors in the short-cut nitrification stage are more, aeration is required, and energy is consumed. Therefore, how to realize the high-efficiency treatment of the landfill leachate is more and more interesting on the basis of realizing energy recovery and saving cost.
Disclosure of Invention
The invention provides a method for treating landfill leachate, which realizes deep autotrophic denitrification and sulfur recovery of the landfill leachate and reduces the operation cost.
The invention provides a method for treating landfill leachate, which comprises the following steps:
1) Anaerobic digestion treatment is carried out on the landfill leachate by using anaerobic methanogens to obtain methane and anaerobic digestion effluent; 2) Treating the anaerobic digestion effluent by using sulfur-based autotrophic denitrifying bacteria to obtain nitrogen and sulfur-based autotrophic denitrifying effluent; 3) Treating the sulfur-based autotrophic denitrification effluent by using aerobic ammonia oxidizing bacteria to obtain short-cut nitrification effluent; 4) Treating the short-cut nitrified effluent by using anaerobic ammonium oxidation bacteria to generate nitrogen, sulfur and anaerobic ammonium oxidation effluent; 5) Mixing a part of anaerobic ammonia oxidation effluent and anaerobic digestion effluent, then continuously treating by using sulfur-based autotrophic denitrifying bacteria, filtering the rest of anaerobic ammonia oxidation effluent, and removing the rest organic matters and nitrogen-containing compounds to finish the treatment of the landfill leachate.
Furthermore, the concentration of sulfate radicals in the garbage penetrating fluid is 300-400mg/L, the concentration of ammonia nitrogen is 2000-2500mg/L, and the concentration of organic matters is 30000-40000mg/L.
Furthermore, the concentration of sulfur ions in the anaerobic digestion effluent is 300-400mg/L, the concentration of ammonia nitrogen is 2000-2500mg/L, the concentration of organic matters is 1500-2000mg/L, and the pH value is 7.8-8.
Further, the anaerobic digestion treatment is carried out in an anaerobic membrane bioreactor.
Further, the sulfur-based autotrophic denitrifying bacteria are capable of utilizing sulfur ions in the anaerobic digestion effluent as electron donors to reduce nitrate in the anaerobic ammonia oxidation effluent into nitrogen and oxidize the sulfur ions into sulfate.
Further, the molar ratio of the nitrate nitrogen in the portion of anaerobic ammonia oxidation effluent to the sulfide ions in the anaerobic digestion effluent is 1.6.
Further, the aerobic ammonia oxidizing bacteria are capable of converting part of ammonia nitrogen in the sulfenyl autotrophic denitrification effluent into nitrite by using oxygen.
Further, the anammox bacteria comprise nitrite anammox bacteria and sulfate anammox bacteria, wherein the nitrite anammox bacteria can utilize nitrite and ammonia nitrogen in the short Cheng Xiao gasified water to carry out anammox so as to generate nitrogen; the sulfate anaerobic ammonia oxidation bacteria can utilize sulfate and ammonia nitrogen in the sulfur-based autotrophic denitrification effluent to carry out anaerobic ammonia oxidation to generate elemental sulfur and nitrogen.
Further, the volume ratio of the part of the anammox effluent to the remaining part of the anammox effluent is 1.
And further filtering the rest anaerobic ammonia oxidation effluent by using a filtering membrane to remove the rest organic matters and nitrogen-containing compounds.
The implementation of the invention has at least the following advantages:
1. by refluxing the anaerobic ammonia oxidation effluent containing nitrate and utilizing the sulfide ions of the reduction product of sulfate in the landfill leachate to perform sulfenyl autotrophic denitrification, the balance of deep denitrification and energy recovery is realized, and meanwhile, the electron donor is saved and the treatment cost is reduced.
2. By utilizing the oxidation product sulfate of sulfur ions in the sulfur-based autotrophic denitrification reaction as an electron acceptor for anaerobic ammonia oxidation, namely by recycling sulfur, the deep denitrification and desulfurization of the landfill leachate are realized, the requirement on nitrite in the short-cut nitrification stage, namely the requirement on aeration is reduced, and the energy consumption is reduced.
3. The method is simple and easy to implement, does not need to consume organic matters so as to reduce energy recovery or additionally invest an electron donor to increase the treatment cost to carry out deep denitrification, realizes denitrification and desulfurization of the landfill leachate by recycling sulfur, and has low cost and obvious comprehensive benefit.
Drawings
FIG. 1 is a schematic process flow diagram provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the variation of landfill leachate containing low concentration of sulfate in an embodiment of the present invention;
fig. 3 is a schematic diagram showing a variation of landfill leachate containing high concentration of sulfate in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
In this embodiment, the concentration of organic matters in the landfill leachate to be treated is 30000mg/L, the concentration of ammonia nitrogen is 2000mg/L, the concentration of sulfate radicals is 300mg/L, and the specific operation flow is shown in fig. 2, and includes the following steps:
1. adding the garbage percolate into an anaerobic membrane bioreactor, and carrying out anaerobic digestion reaction on the garbage percolate by using anaerobic bacteria to obtain methane and anaerobic digestion effluent containing HS - Ammonia nitrogen and organic matters, the concentration of the sulfur ions is 300mg/L, and the concentration of the ammonia nitrogen is 2000mg/L, and the concentration of the organic matters is 1500mg/L.
2. The anammox effluent containing about 220mg/L nitrate was refluxed to the thioautotrophic denitrification feed water and subjected to deep denitrification by using in situ sulfide ions as electron donor at reflux ratio =1. When the N/S molar ratio =1.68, the following reaction occurs in the sulfur autotrophic denitrification, the products are sulfate and nitrogen, and the sulfate ion as an electron donor can remove 95% of nitrate nitrogen.
The reaction equation of the sulfur-based autotrophic denitrification is as follows:
HS - +1.6NO 3 - +0.6H + →SO 4 2- +0.8N 2 +0.8H 2 O
3. converting the sulfur-based autotrophic denitrification effluent into short-cut nitrification effluent containing nitrite under the action of oxygen by aerobic ammonia oxidizing bacteria.
4. Carrying out anammox by using nitrite anammox bacteria and nitrite and ammonia nitrogen in the short-cut nitrification effluent, wherein the nitrite is used as an electron acceptor of the anammox to generate nitrogen and anammox effluent;
sulfate and ammonia nitrogen in the sulfur-based autotrophic denitrification effluent are utilized by sulfate anammox bacteria to carry out anammox, wherein the sulfate is used as an electron acceptor for anammox to generate elemental sulfur, nitrogen and anammox effluent.
The reaction equation for anammox nitrite is:
NH 4 + +1.32NO 2 - +0.066HCO 3 - +0.13H + →1.02N 2 +0.26NO 3 - +0.066CH 2 O 0.5 N 0.5 +2.03H 2 O
the reaction equation of the sulfate type anaerobic ammonium oxidation is as follows:
2NH 4 + +SO 4 2- →N 2 +S 0 +4H 2 O
5. mixing the first part of anaerobic ammonia oxidation effluent and anaerobic digestion effluent into sulfur-based autotrophic denitrification influent water, then carrying out sulfur-based autotrophic denitrification reaction, filtering the second part of anaerobic ammonia oxidation effluent, and removing residual organic matters and nitrogen-containing compounds to obtain the landfill leachate.
The embodiment makes corresponding analysis based on different sulfate concentration conditions in the landfill leachate. By refluxing anaerobic ammonium oxidation effluent containing nitrate to sulfenyl autotrophic denitrification influent water, the balance of deep denitrification and energy recovery is realized by using sulfur ions as electron donors, the electron donors are saved, the treatment cost is reduced, and meanwhile, by using sulfate which is an oxidation product of sulfur ions in sulfenyl autotrophic denitrification reaction as an anaerobic ammonium oxidation electron acceptor, the reduction of aeration energy consumption in the deep autotrophic denitrification sulfur recovery and short-cut nitrification stages of landfill leachate is realized by realizing the cyclic utilization of sulfur. In the embodiment, the aeration energy consumption is reduced by 13% through the backflow of anaerobic ammonia oxidation effluent.
Example two
In this embodiment, the concentration of organic matters in the landfill leachate to be treated is 40000mg/L, the concentration of ammonia nitrogen is 2500mg/L, the concentration of sulfate radicals is 400mg/L, and the specific operation flow is shown in FIG. 3, and the method comprises the following steps:
1. adding the landfill leachate into an anaerobic membrane bioreactor, and performing anaerobic digestion reaction on the landfill leachate by using anaerobic bacteria to ensure that anaerobic digestion effluent contains 400mg/L of sulfide ions, 2500mg/L of ammonia nitrogen and 2000mg/L of organic matters.
2. The anammox effluent containing about 275mg/L nitrate was refluxed to the thioautotrophic denitrification feed water and subjected to deep denitrification by using in situ sulfide ions as electron donor at reflux ratio =1. When the N/S molar ratio =1.57, the thioautotrophic denitrification occurs as a reaction of sulfate and nitrogen, and 100% of nitrate nitrogen is removed by sulfur ions as an electron donor.
The reaction equation of the sulfur-based autotrophic denitrification is as follows:
HS - +1.6NO 3 - +0.6H + →SO 4 2- +0.8N 2 +0.8H 2 O
3. converting the sulfur-based autotrophic denitrification effluent into short-cut nitrification effluent containing nitrite by ammonia oxidizing bacteria under the action of oxygen.
4. Carrying out anaerobic ammonia oxidation by using nitrite and ammonia nitrogen in the short-cut nitrification effluent through nitrite anaerobic ammonia oxidation bacteria, wherein the nitrite is used as an electron acceptor of the anaerobic ammonia oxidation to generate nitrogen and anaerobic ammonia oxidation effluent;
sulfate and ammonia nitrogen in the sulfur-based autotrophic denitrification effluent are utilized by sulfate anammox bacteria to carry out anammox, wherein the sulfate is used as an electron acceptor for anammox to generate elemental sulfur, nitrogen and anammox effluent.
The reaction equation of the anammox nitrite is as follows: NH (NH) 4 + +1.32NO 2 - +0.066HCO 3 - +0.13H + →1.02N 2 +0.26NO 3 - +0.066CH 2 O 0.5 N 0.5 +2.03H 2 O
Wherein the reaction equation of sulfate type anaerobic ammonia oxidation is as follows:
2NH 4 + +SO 4 2- →N 2 +S 0 +4H 2 O
5. mixing the first part of anaerobic ammonia oxidation effluent and anaerobic digestion effluent into sulfur-based autotrophic denitrification influent water, then carrying out sulfur-based autotrophic denitrification reaction, filtering the second part of anaerobic ammonia oxidation effluent, and removing residual organic matters and nitrogen-containing compounds to obtain landfill leachate.
The corresponding analysis is made based on the different sulfate concentration in the landfill leachate. By refluxing anaerobic ammonia oxidation effluent containing nitrate to sulfur-based autotrophic denitrification influent water, the balance of deep denitrification and energy recovery is realized by using sulfur ions as an electron donor, the electron donor is saved, the treatment cost is reduced, and meanwhile, sulfate which is an oxidation product of sulfur ions in sulfur-based autotrophic denitrification reaction is used as an anaerobic ammonia oxidation electron acceptor, and the reduction of aeration energy consumption in the deep autotrophic denitrification sulfur recovery and short-cut nitrification stages of landfill leachate is realized by realizing the cyclic utilization of sulfur. In the embodiment, the aeration energy consumption is reduced by 14% through the backflow of anaerobic ammonia oxidation effluent.
The invention realizes the deep denitrification of the anaerobic ammonia oxidation effluent by using in-situ sulfur ions in the landfill leachate as an electron donor, realizes the denitrification and desulfurization of the landfill leachate and reduces the aeration energy consumption in a short-cut nitrification stage by using the sulfate of an oxidation product of the sulfur ions in the sulfur-based autotrophic denitrification reaction as an electron acceptor of the anaerobic ammonia oxidation and realizing the cyclic utilization of sulfur, and solves the problem of realizing the deep denitrification of the landfill leachate based on the anaerobic ammonia oxidation process by reducing the energy recovery or adding the electron donor to increase the treatment cost. Compared with the method for treating the landfill leachate based on the anaerobic ammonia oxidation process in the prior art, the method has the following advantages:
(1) By refluxing the anaerobic ammonia oxidation effluent containing nitrate and carrying out sulfur-based autotrophic denitrification by using in-situ sulfate reduction product sulfide ions in the landfill leachate, the balance of deep denitrification and energy recovery is realized, electron donors are saved, and the treatment cost is reduced.
(2) By utilizing the oxidation product sulfate of sulfur ions in the sulfur-based autotrophic denitrification reaction as an electron acceptor for anaerobic ammonia oxidation, namely by recycling sulfur, the deep denitrification and desulfurization of the landfill leachate are realized, the requirement on a nitrite substrate in a short-cut nitrification stage, namely the requirement on aeration, is reduced, and the energy consumption can be reduced.
(3) The method is simple and easy to implement, does not need to consume organic matters so as to reduce energy recovery or add an electron donor additionally to increase the treatment cost to carry out deep denitrification, realizes denitrification and desulfurization of the landfill leachate by recycling sulfur, and has low cost and obvious comprehensive benefit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for treating landfill leachate, the method comprising the steps of:
1) Anaerobic digestion treatment is carried out on the landfill leachate by using anaerobic methanogens to obtain methane and anaerobic digestion effluent; 2) Treating the anaerobic digestion effluent by using sulfur-based autotrophic denitrifying bacteria to obtain nitrogen and sulfur-based autotrophic denitrifying effluent; 3) Treating the sulfur-based autotrophic denitrification effluent by using aerobic ammonia oxidizing bacteria to obtain shortcut nitrification effluent; 4) Treating the short-cut nitrified effluent by using anaerobic ammonium oxidation bacteria to generate nitrogen, elemental sulfur and anaerobic ammonium oxidation effluent; 5) And mixing a part of the anaerobic ammonia oxidation effluent with the anaerobic digestion effluent, then continuously treating by using sulfur-based autotrophic denitrifying bacteria, filtering the rest of the anaerobic ammonia oxidation effluent, and removing the rest organic matters and nitrogen-containing compounds to finish the treatment of the landfill leachate.
2. The method according to claim 1, wherein the concentration of sulfate in the landfill leachate is 300-400mg/L, the concentration of ammonia nitrogen is 2000-2500mg/L, and the concentration of organic matters is 30000-40000mg/L.
3. The method according to claim 2, wherein the concentration of sulfur ions in the anaerobic digestion effluent is 300-400mg/L, the concentration of ammonia nitrogen is 2000-2500mg/L, the concentration of organic matters is 1500-2000mg/L, and the pH is 7.8-8.
4. The method of claim 3, wherein the anaerobic digestion treatment is performed in an anaerobic membrane bioreactor.
5. The method as claimed in any one of claims 1 to 4, wherein the sulfur-based autotrophic denitrifying bacteria are capable of utilizing sulfur ions in the anaerobic digested effluent as electron donors to reduce nitrate in the anaerobic ammonia oxidation effluent into nitrogen and oxidize sulfur ions into sulfate.
6. The method of claim 5, wherein the molar ratio of nitrate nitrogen in the portion of anaerobic ammonia oxidation effluent to sulfide ions in the anaerobic digestion effluent is 1.6.
7. The method of any one of claims 1-6, wherein the aerobic ammonia-oxidizing bacteria are capable of converting a portion of ammonia nitrogen in the sulfenyl autotrophic denitrification effluent into nitrite with oxygen.
8. The method of any one of claims 1-7, wherein said anammox bacteria comprise nitrite anammox bacteria and sulfate anammox bacteria, wherein said nitrite anammox bacteria is capable of anammox using nitrite and ammonia nitrogen in said short Cheng Xiao digested effluent to produce nitrogen; the sulfate anammox bacteria can utilize sulfate and ammonia nitrogen in the sulfur-based autotrophic denitrification effluent to carry out anammox to generate elemental sulfur and nitrogen.
9. The method of claim 1, wherein the volume ratio of the portion of anammox effluent to the remaining portion of anammox effluent is 1.
10. The process of any one of claims 1 to 9, wherein the remaining portion of the anammox effluent is filtered using a filtration membrane to remove remaining organic matter and nitrogen compounds.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108483655A (en) * 2018-05-31 2018-09-04 中山大学 A kind of method of short-cut nitrification and denitrification coupling two-stage autotrophic denitrification advanced nitrogen
CN108946944A (en) * 2018-08-08 2018-12-07 农业部沼气科学研究所 The method that short-cut denitrification promotes the removal of waste water total nitrogen
CN110028155A (en) * 2019-05-23 2019-07-19 天津城建大学 Anammox couples sulphur autotrophic denitrification nitrogen rejection facility and wastewater treatment method
CN112607858A (en) * 2020-12-11 2021-04-06 香港科技大学深圳研究院 Deamination method and system for coupling sulfur autotrophic short-cut denitrification with anaerobic ammonia oxidation
CN112850900A (en) * 2021-03-06 2021-05-28 苏州绿业环境发展有限公司 Method for synchronously removing nitrogen and sulfur in sewage based on shortcut nitrification-anaerobic ammonia oxidation-sulfur autotrophic denitrification system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108483655A (en) * 2018-05-31 2018-09-04 中山大学 A kind of method of short-cut nitrification and denitrification coupling two-stage autotrophic denitrification advanced nitrogen
US20200377398A1 (en) * 2018-05-31 2020-12-03 Sun Yat-Sen University Partial nitrification-denitrification coupled two-stage autotrophic denitrification advanced nitrogen removal method
CN108946944A (en) * 2018-08-08 2018-12-07 农业部沼气科学研究所 The method that short-cut denitrification promotes the removal of waste water total nitrogen
CN110028155A (en) * 2019-05-23 2019-07-19 天津城建大学 Anammox couples sulphur autotrophic denitrification nitrogen rejection facility and wastewater treatment method
CN112607858A (en) * 2020-12-11 2021-04-06 香港科技大学深圳研究院 Deamination method and system for coupling sulfur autotrophic short-cut denitrification with anaerobic ammonia oxidation
CN112850900A (en) * 2021-03-06 2021-05-28 苏州绿业环境发展有限公司 Method for synchronously removing nitrogen and sulfur in sewage based on shortcut nitrification-anaerobic ammonia oxidation-sulfur autotrophic denitrification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨世东;刘涵;: "硫自养反硝化中亚硝酸盐积累的研究现状与展望", 东北电力大学学报 *

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