WO2019117668A1 - Appareil et procédé pour nitrifier partiellement de l'ammoniac dans des eaux d'égout/eaux usées contenant de l'ammoniac - Google Patents

Appareil et procédé pour nitrifier partiellement de l'ammoniac dans des eaux d'égout/eaux usées contenant de l'ammoniac Download PDF

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WO2019117668A1
WO2019117668A1 PCT/KR2018/015927 KR2018015927W WO2019117668A1 WO 2019117668 A1 WO2019117668 A1 WO 2019117668A1 KR 2018015927 W KR2018015927 W KR 2018015927W WO 2019117668 A1 WO2019117668 A1 WO 2019117668A1
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nob
ammonia
bioreactor
nitrification
carrier
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PCT/KR2018/015927
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English (en)
Korean (ko)
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강동한
장영호
이수문
유재인
성연국
최시림
김태화
윤미혜
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경기도
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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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/341—Consortia of bacteria
    • 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
    • C02F3/10—Packings; Fillings; Grids
    • 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
    • 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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1284—Mixing devices
    • 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
    • C02F3/20—Activated sludge processes using diffusers
    • 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
    • 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
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • 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

Definitions

  • the present invention relates to a method of partially nitrating ammonia in ammonia-containing wastewater, and more particularly to an apparatus for partially nitrating ammonia in a wastewater by inhibiting growth using a selective inhibitor of nitrite-oxidizing bacteria (NOB)
  • NOB selective inhibitor of nitrite-oxidizing bacteria
  • the present invention relates to a method for partial nitrification of ammonia.
  • the anaerobic, anaerobic and aerobic conditions are sequentially induced to remove organic matter and nutrients, and organic matter, nitrogen and phosphorus are removed through unit operations such as MLSS transportation, stirring and aeration (Fig. 1).
  • oxygen is supplied to minimize the activity of aerobic heterotrophic bacteria by preventing the supply of molecular oxygen and to induce nitrification, phosphorus intake and aerobic organic decomposition reaction under aerobic conditions.
  • the anaerobic tank should minimize NOx-N influx as well as dissolved oxygen so that the biological removal activity is not inhibited by denitrification.
  • Ammonia nitrogen is oxidized to nitrite nitrogen and nitrate nitrogen and then reduced by nitrate denitrifying bacteria to nitric oxide, dinitrogen monoxide and nitrogen gas.
  • AOB Ammonia Oxidation Bacteria
  • Nitrosomonas eg N. europaea , N. Oligocarbogenes
  • Nitrosococcus e.g. europaea , N. Oligocarbogenes
  • Nitrosococcus eg. europaea , N. Oligocarbogenes
  • Nitrosococcus Nitrosopira and Nitrosolobus
  • NOB Nirite Oxidation Bacteria
  • Nitrobacter eg N. agilis , N. winogradski
  • Nitrosopira eg N. agilis , N. winogradski
  • Nitrification of ammonia nitrogen can be classified into a first stage and a second stage reaction.
  • the nitrification of the first stage is a process of oxidizing ammonia nitrogen to nitrite nitrogen as shown in Equation (1).
  • energy of 58 to 84 kcal is generated.
  • the second stage nitrification is a process of oxidizing nitrite nitrogen to nitrate nitrogen as shown in equation (2). It is known that energy of 15.4 ⁇ 20.9 kcal is produced per mole of nitrite nitrogen.
  • Biological denitrification is a process in which nitrate nitrogen and nitrite nitrogen are used as electron acceptors and converted to nitrogen (N 2 ) gas.
  • the biological nitrate reduction process can be divided into an assimilation nitrate reduction process and a hypothetical nitrate reduction process. In the activated sludge process, most of the nitrogen is removed by the eutectic nitrate reduction reaction.
  • Acid nitrate reduction is the ultimate electron acceptor, using nitrate nitrogen or nitrite nitrogen instead of oxygen, called anaerobic respiration and denitrification.
  • Most microorganisms that perform denitrification can simultaneously use nitrate nitrogen, nitrite nitrogen, and dissolved oxygen as electron acceptors.
  • aerobic respiration 1 mole of glucose oxidation can produce 116 kcal more energy than anaerobic respiration. Therefore, anaerobic respiration is limited in aerobic condition where dissolved oxygen exists.
  • the denitrifying bacteria mainly used for sewage treatment are Pseudomonas sp., Bacillus sp., Spirillum sp., Agrobacterium sp., Acinetobacter sp., Propionobacterium sp., Rhizobium sp., Thibacillus sp., Alcaligenes sp. .
  • alkalinity of 3.57 mg CaCO 3 is produced at 1 mg NO 3 -N reduction, and BOD of 2.86 mg / L is consumed.
  • Partial nitrification is carried out by nitrification only to nitrite nitrogen, which maintains the activity of ammonia-oxidizing bacteria (AOB) and inhibits nitrite-oxidizing bacteria (NOB). NOB is generated or proliferated in the biological reactor when the partial nitrification reaction is carried out, thereby interfering with the partial nitrification reaction, and the ammonia removal efficiency is lowered.
  • AOB ammonia-oxidizing bacteria
  • NOB nitrite-oxidizing bacteria
  • NOB is known to have lower relative activity than AOB due to low DO, high pH, high water temperature, free ammonia (FA), free nitrile acid (FNA), short SRT and ultrasound.
  • FNA formed at high concentrations of ammonia, FA formed at high pH conditions, or in the presence of high concentrations of nitrite ions weakens NOB activity and causes partial nitrification.
  • NOB can be reduced in the stability of partial nitrification due to the relaxation of the inhibition strength in the case of long-term operation under high concentration of FA and FNA conditions. Therefore, the partial nitrification which is applied until now is limitedly applied to the sewage treatment plant recycle water, landfill leachate and livestock manure where high concentration of ammonia exists.
  • the Anammox reaction is a reaction in which nitrite nitrogen and ammonia nitrogen are combined by the autotrophic ananus bacterium in the absence of oxygen and organic matter to remove nitrogen (see Equation (6) below). That is, in an anaerobic state, nitrite is used as an oxidizing agent, and ammonium ion is used as a reducing agent to generate nitrogen gas.
  • Anammox bacteria can be grafted with technologies such as granules, UASBs, and carriers for large-scale cultivation of bacteria because of the very low growth rate and time-consuming operation stabilization.
  • N2O nitrous oxide
  • BNR standard biological nutrient removal
  • the nitrite-anammox process consumes 37.5% of the oxygen consumed in nitrogen removal in a typical BNR process (62.5% reduction), eliminating the need for external carbon sources in the denitrification process, And the amount of generated sludge is also very small (Tal et al., Applied and Environmental Microbiololy 72 (4), pp 2896-2904, 2006; Fux et al., Journal of Biotechnol ., 99. pp.295-306, 2002).
  • the present inventors have made intensive efforts to develop a method for stably carrying out partial nitrification by inhibiting nitrite-oxidizing bacteria (NOB) proliferating in a partial nitrification-anaerobic step of treating ammonia-containing sewage water.
  • NOB nitrite-oxidizing bacteria
  • a device and method for preventing the NOB inhibitor from leaking out of a biological reactor through selective inhibition and effective degradation of NOB by directly injecting a selective inhibitor of oxidized bacteria (NOB) into a biological reactor has been devised.
  • the present invention provides an ammonia partial nitrification apparatus comprising a NOB inhibitor containing a selective inhibitor of nitrite-oxidizing bacteria (NOB).
  • NOB nitrite-oxidizing bacteria
  • the present invention also provides a method for partial nitrification of ammonia using the production of NOBs containing a selective inhibitor of NOB.
  • Figure 1 shows the behavior of contaminants in an activated sludge process.
  • FIG. 2 is a schematic diagram of an ammonia partial nitrification apparatus including a bioreactor according to the present invention and NOB removal.
  • FIG. 3 shows the results of one cycle of circulation of the fluid carrier between the bioreactor and the selective inhibitor during the accumulation of nitrite by the partial nitrification of ammonia continuously using hydroxylamine.
  • FIG. 4 shows the result of repeating the circulation of the fluid carrier between the bioreactor and the selective inhibitor tank three times among the results of the accumulation of nitrite by the partial nitrification of ammonia continuously using hydroxylamine.
  • FIG. 5 shows nitrification rates obtained by repeating the circulation of the fluid carrier between the bioreactor and the selective inhibitor tank three times among the results of the accumulation of nitrite by the partial nitrification of ammonia continuously using hydroxylamine.
  • Sewage contains various pollutants such as carbon compounds, nitrogen compounds, and phosphorus compounds.
  • the activated sludge process is based on the process of converting oxygen, carbon, nitrogen and phosphorus into oxidized form.
  • Efforts to reduce the cost of oxygen supply by partially nitrifying nitrite to nitrite by nitrifying microorganisms have continued, since removal of ammonia in reduced form is not realistic by current technology, and in particular, partial nitrification
  • Anamox process many commercialized technologies have been introduced for high-ammonia-dense recycled water, leachate, and livestock wastewater. However, it is very difficult to maintain partial nitrification stably in the main treatment process with low ammonia concentration.
  • NOB nit
  • the stable partial nitrification of ammonia according to the present invention can be accomplished by the main treatment process with the Anamox reaction by the associated process, so that the oxygen supply cost required for ammonia oxidation can be finally reduced by 60% or more.
  • the invention thus relates, in one aspect, to an apparatus for the partial nitrification of ammonia comprising the production of NOBs containing a selective inhibitor of NOB.
  • (iii) means for repeatedly transferring the NOB-attached fluid carrier having the AOB carried thereon and being produced or proliferated during the operation of the bioreactor between the bioreactor and the NOB production.
  • the nitrification inhibitor used in the present invention can be used without limitation as long as it is an inhibitor that inhibits the NOB growth or NOB oxidation of nitrite nitrogen to nitrate nitrogen, but preferably includes hydroxylamine, hydrazine, sodium azide , Sulfide, cyanide, chlorate, and the like can be used.
  • the means for moving the flow carrier may be any device capable of continuously conveying and conveying the fluid carrier between the bioreactor and the NOB absorbent.
  • the conveyor device the air lift device, A pump device or the like can be used.
  • Ammonia Oxidation Bacteria is a bacteria responsible for the oxidation of ammonia nitrogen, which is a partial nitrification, to nitrite nitrogen.
  • Nitrosomonas eg N. europaea , N. oligocarbogenes
  • Nitrosococcus e.g N. europaea , N. oligocarbogenes
  • Nitrosopira e. a nitrification Bacteria
  • Nitrosolobus e.g N. europaea , N. oligocarbogenes
  • NOB is a bacteria which oxidizes nitrite nitrogen which is partially nitrified by ammonia to nitrate nitrogen, and Nitrobacter (eg N. agilis , N. winogradski ), Nitrosopira, Nitrococcus and the like can be mentioned.
  • the NOB inhibition tank may be provided with an aeration device or an agitator.
  • the bioreactor may be a single reaction tank in an exhalation state, or a reaction tank in which anaerobic, anaerobic or intermittent aeration and agitation are combined And the like.
  • the bioreactor may be a partial nitrification tank or an Anamox reaction tank.
  • a fluid carrier can be used without limitation as long as it is capable of supporting and holding bacteria and capable of collecting nitrite-oxidizing bacteria floating on the bioreactor, and preferably poly Ester, polyurethane, polyvinyl chloride, nylon, polystyrene and the like can be used.
  • the ammonia-containing wastewater is introduced into a bioreactor containing the AOB-loaded fluid carrier to perform partial nitrification of ammonia, and NOB generated or proliferated during the operation of the bioreactor is supplied to the AOB-
  • the NOB is adsorbed to a fluid carrier and transferred to a NOB inhibitor containing a selective nitrification inhibitor for inhibiting NOB to inhibit the activity of NOB and then to transfer the fluid carrier carrying the AOB whose activity is inhibited to the biological reactor, Partial nitrification of ammonia resulted in partial nitrification of ammonia.
  • Partial nitrification of ammonia resulted in partial nitrification of ammonia.
  • the present invention in another aspect, relates to a method of partially nitrating ammonia using NOB inhibitor production comprising a selective inhibitor of NOB.
  • the steps (b) and (c) may be repeatedly performed to continuously suppress the NOB in NOB production while performing partial nitrification in the bioreactor.
  • the nitrification inhibitor used in the present invention can be used without limitation as long as it is an inhibitor that inhibits the NOB growth or NOB oxidation of nitrite nitrogen to nitrate nitrogen, but preferably includes hydroxylamine, hydrazine, sodium azide , Sulfide, cyanide, chlorate, and the like can be used.
  • the means for moving the flow carrier may be any device capable of continuously conveying and conveying the fluid carrier between the bioreactor and the NOB absorbent.
  • the conveyor device the air lift device, A pump device or the like can be used.
  • Ammonia Oxidation Bacteria is a bacteria responsible for the oxidation of ammonia nitrogen, which is a partial nitrification, to nitrite nitrogen.
  • Nitrosomonas eg N. europaea , N. oligocarbogenes
  • Nitrosococcus e.g N. europaea , N. oligocarbogenes
  • Nitrosopira e. a nitrification Bacteria
  • Nitrosolobus e.g N. europaea , N. oligocarbogenes
  • the bioreactor may be a partial nitrification tank or anammox reaction tank.
  • the Anammox reaction may be carried out in the presence of Candidatus Kuenenia ( K. stuttgartiensis ), Brocadia ( B. anammoxidans, B. fulgida and B. sinica ), Anammoxoglobus ( A. propionicus ), Jettenia ( J. asiatica ) and Scalindua S. brodae, S. sorokinii, S. wagneri, and S. profunda ).
  • a fluid carrier can be used without limitation as long as it is capable of supporting and holding bacteria and capable of collecting nitrite-oxidizing bacteria floating on the bioreactor, and preferably poly Ester, polyurethane, polyvinyl chloride, nylon, polystyrene and the like can be used.
  • the fluid carrier present in the bioreactor is separated from the liquid, immersed in a nitrification inhibitor containing hydroxylamine, stirred or aerated for 2 hours, and subjected to partial nitrification experiments in ammonia-containing sewage , And hydroxylamine treatment, the nitrite accumulation rate increases sharply as the number of repetitions increases. That is, in the case of aeration, nitrification inhibition effect gradually decreased after accumulation of nitrite nitrogen (33.3%) and 17.6% in the case of agitation only had insufficient NOB inhibitory effect compared to the case of aeration as maximum accumulation rate.
  • NO2-N accumulation can be inhibited for a short period of time by inhibiting NOB activity by repeating the NOB inhibitor production and dissolving the drug having a selective inhibitory effect on NOB to expose the microorganism to the biological reactor after aeration or agitation .
  • NOB activity by repeating the NOB inhibitor production and dissolving the drug having a selective inhibitory effect on NOB to expose the microorganism to the biological reactor after aeration or agitation .
  • microbial migration between the NOB inhibitor and the bioreactor prevents the NOB inhibitor from being incorporated into the main sewage treatment process by utilizing the fluid carrier, thereby minimizing the waste of the drug and using it repeatedly.
  • partial nitrification was performed using a combination of continuous infusion bioreactor and NOB selective oxidation production.
  • Continuous infusion bioreactor was maintained at less than 20 mg / L for suspended active sludge, and the nitrification reaction proceeded by flow carrier (material, polyethylene).
  • the fluid carrier filling rate was 20% (V / V) for smooth flow.
  • the selective nitrification inhibitor tank 6.5 mg / L (2.8 mg N / L) of hydroxylamine was dissolved in a state filled with tap water.
  • the aeration tank and the agitation tank were operated to understand the partial nitrification difference due to aeration and agitation, respectively.
  • NOx-N concentrations were monitored to determine the effect of hydroxylamine, a NOB selective inhibitor, on AOB.
  • hydroxylamine a NOB selective inhibitor
  • the nitrification rate of the NOB production was increased by 55.0% and 35.2%, respectively, as shown in FIG.
  • the present invention it is possible to effectively inhibit nitrite-oxidizing bacteria in a bioreactor where nitrification takes place, effectively perform partial nitrification of ammonia through the ananox process or denitrification, and the NOB inhibitor
  • the effluent from the biological sewage treatment process to the outside is prevented, thereby minimizing ecosystem disturbance and drug consumption by the NOB selective inhibitor and reducing the operation cost.

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  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
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  • Environmental & Geological Engineering (AREA)
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Abstract

La présente invention concerne : un appareil pour nitrifier partiellement l'ammoniac dans les eaux d'égout/eaux usées en utilisant un inhibiteur sélectif de bactéries oxydant le nitrite (NOB); et un procédé pour nitrifier partiellement l'ammoniac l'utilisant. Selon la présente invention, les NOB sont efficacement inhibées dans un bioréacteur où se produit une nitrification partielle, et ainsi la nitrification partielle de l'ammoniac peut être effectuée de manière stable, ce qui permet de réaliser efficacement un processus de dénitrification.
PCT/KR2018/015927 2017-12-14 2018-12-14 Appareil et procédé pour nitrifier partiellement de l'ammoniac dans des eaux d'égout/eaux usées contenant de l'ammoniac WO2019117668A1 (fr)

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KR1020170171868A KR101875024B1 (ko) 2017-12-14 2017-12-14 암모니아 함유 하폐수에서 암모니아를 부분질산화하는 장치 및 방법
KR10-2017-0171868 2017-12-14

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CN108640278A (zh) * 2018-05-10 2018-10-12 北京工业大学 低c/n比城市生活污水内源反硝化除磷/短程硝化部分厌氧氨氧化生物膜工艺与装置
CN111410295A (zh) * 2020-03-31 2020-07-14 西安建筑科技大学 生化反应池短程硝化的快速启动和稳定运行方法
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CN108483655B (zh) * 2018-05-31 2021-07-30 中山大学 一种短程硝化反硝化耦合厌氧氨氧化和硫自养反硝化深度脱氮的方法
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EP3255016A1 (fr) * 2016-06-10 2017-12-13 FCC Aqualia, S.A. Procédé de démarrage et de commande d'un processus biologique d'élimination d'ammonium à de faibles concentrations d'ammonium et à basse température par l'utilisation d'un procédé en deux étapes d'un processus d'élimination d'azote autotrophe
KR101875024B1 (ko) * 2017-12-14 2018-08-02 경기도 암모니아 함유 하폐수에서 암모니아를 부분질산화하는 장치 및 방법

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CN111410295A (zh) * 2020-03-31 2020-07-14 西安建筑科技大学 生化反应池短程硝化的快速启动和稳定运行方法
CN112093890A (zh) * 2020-07-31 2020-12-18 国投信开水环境投资有限公司 一种短程硝化处理污水的方法
CN112093890B (zh) * 2020-07-31 2021-07-16 国投信开水环境投资有限公司 一种短程硝化处理污水的方法
WO2022022018A1 (fr) * 2020-07-31 2022-02-03 国投信开水环境投资有限公司 Procédé de nitrification raccourcie pour le traitement des eaux usées
CN112028232A (zh) * 2020-08-26 2020-12-04 江西理工大学 一种利用低强度超声波筛选短程硝化细菌的方法及其应用
CN112661258A (zh) * 2020-12-08 2021-04-16 北京工业大学 一种利用对乙酰氨基酚快速启动城市污水常温短程硝化的方法

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