683 results about "Anaerobic ammonium oxidation" patented technology

The invention discloses an autotrophic nitrogen removal method for biological phosphorus removal of urban sewage based on short-cut denitrification for providing nitrite. The method comprises the following steps: firstly feeding urban sewage into an anaerobic zone of a biological phosphorus removal nitrogen removal reactor, wherein short-cut denitrification is firstly carried out on denitrifying bacteria on a biological membrane so as to reduce nitrate nitrogen in return sludge to nitrite nitrogen, anaerobic ammonium oxidation bacteria on the biological membrane further convert nitrite nitrogen and nitrite nitrogen into nitrogen while anaerobic phosphorus release is carried out on phosphorus-accumulating bacteria in floc sludge; then feeding the sewage into the anaerobic zone again, wherein short-cut denitrification is carried out on the denitrifying bacteria on the biological membrane so as to reduce nitrate nitrogen in return sludge to nitrite nitrogen, and anaerobic ammonium oxidation bacteria on the biological membrane further convert nitrite nitrogen and nitrite nitrogen into nitrogen; then feeding the sewage into an aerobic zone and ammonia oxidizing bacteria and nitrite oxidizing bacteria in the floc sludge oxidize residual ammonia nitrogen in the sludge to nitrate nitrogen; and finally, implementing residual phosphorus removal and autotrophic nitrogen removal of urban sewage of a continuous flow, wherein the treatment energy consumption of an urban sewage plant is reduced.

The invention discloses a method for quickly starting a completely autotrophic nitrogen removal over nitrite process on sewage on the conditions of constant temperature and low ammonia nitrogen and belongs to the field of city sewage treatment and reutilization. The completely autotrophic nitrogen removal over nitrite (CANON) process is started in a biological filter tank reactor and comprises the following steps: firstly, nitrifying sludge by using an inoculating part, and performing aerobic nitrification start with sufficient oxygen supply to build a nitrosobacteria-dominated and nitrobacterium-dominated microorganism system; inhibiting the growth of nitrobacterium through intermittent aeration / anaerobism and enriching anaerobic ammonium oxidation bacteria; and finally, performing continuous aeration, controlling ammonia nitrogen to be oxidized to a stage of nitrous acid through restrictive oxygen supply, and optimizing microenvironment where nitrosobacteria and anaerobic ammonium oxidation bacteria coexist so as to successfully start the CANON process. By using the method, the problem that the growth enrichment of the anaerobic ammonium oxidation bacteria is slower for a long term can be solved; moreover, the starting way is simple and feasible, and the difficulty of the start of a single-stage autotrophic nitrogen removal system is reduced; and therefore, a method is provided to start the CANON process on stimulated waste water on the conditions of constant temperature and low ammonia nitrogen.

The invention discloses a device for autotrophic nitrogen removal by combining A / O shortcut nitrification of sludge digestion liquid and anaerobic ammonium oxidation of granular sludge and a method thereof. The device of the invention comprises a digestion liquid tank, an A / O shortcut nitrification tank, a sedimentation tank, a middle water tank, an anaerobic ammonium oxidation tank, wherein, the digestion liquid tank is communicated with a first cancellus as an anoxic zone of the A / O shortcut nitrification tank by the inlet pump of the A / O shortcut nitrification tank; the sedimentation tank the upper part of which is communicated with the middle water tank by a water pipe is provided with a central pipe and the anaerobic ammonium oxidation tank is provided with a water bath sleeve and a granular sludge bed. In addition, the method of the invention comprises the following steps of starting the A / O shortcut nitrification tank; starting the anaerobic ammonium oxidation tank of the granular sludge; operating an autotrophic biological nitrogen removal system in series after the starting of the A / O shortcut nitrification tank and the anaerobic ammonium oxidation tank is respectively completed. The device and the method of the invention are applicable to the shortcut nitrification and the nitrogen removal of the sludge digestion liquid in a sewage treatment plant and have the advantages of advanced technology, simple structure of the device, convenient operation and good treatment effect of water purification.

A method especially for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix belongs to the field of urban domestic sewage treatment and regeneration. The method comprises firstly inoculating nitrified sludge having certain nitration function into an upward-flow biology filtering tank using volcanic rocks as filtering materials, and employing a method of continuous aeration and dissolved oxygen concentration control so as to cultivate nitrified biomembrane; secondly, employing a intermittent aeration / anaerobic way to screen and concentrate anaerobic ammonium oxidation (ANAMMOX) bacterium; and lastly adding a certain amount of ANAMMOX bacterium into the reactor after the reactor fully enter into an anaerobic situation to perform rapid induction, andthus reducing starting time. On the basis of appearance of anaerobic ammonium oxidation characteristics, HRT continues to be reduced, water inflow load is raised, and finally starting of ANAMMOX technology at room temperature in low-matrix sewage can be realized. The invention provides a method for quick starting of the anaerobic ammonium oxidation technology at room temperature in low matrix.

The present invention discloses a continuous flow shortcut nitrification-anaerobic ammonium oxidation biological denitrification method based on granular sludge, and an apparatus. The method comprises: 1) carrying out sludge inoculation culture, and carrying out an active sludge adaptation period; 2) starting a shortcut nitrification-anaerobic ammonium oxidation reaction; 3) performing an anaerobic ammonium oxidation granular sludge formation and growth period; and 4) performing a stable operation period of a granular sludge continuous flow system. The apparatus comprises a water inlet tank, a bioreactor, a sedimentation tank and a hydraulic screen filter, wherein the water inlet tank, the bioreactor, the sedimentation tank and the hydraulic screen filter are sequentially communicated, the influent of the water inlet tank is communicated with high ammonia nitrogen wastewater, the effluent is communicated with the bioreactor, the concentrated sludge on the bottom of the sedimentation tank is communicated with the bioreactor through a sludge reflux pump, a fixation filler, a stirrer, a filtration screen and an aeration head communicated with an air compressor are arranged inside an anoxic reactor, the sedimentation tank is provided with a clear overflow port communicated with the hydraulic screen filter through a pipeline, the effluent of the hydraulic screen filter is the final effluent, and the retained granular sludge refluxes to the bioreactor.

The invention provides a process and method for denitrification and phosphorus removal of municipal sewage by half shortcut nitrification and anaerobic ammonium oxidation, which belongs to the technical field of sewage biological treatment. The process comprises an untreated water tank, a sequencing batch reactor (SBR) for removing organic matters, a first regulating water tank, a half shortcut nitrification SBR, a second regulating water tank and an autotrophic denitrification upflow anaerobic sludge blanket (UASB) reactor sequentially connected in series. Sludge is separated according to sludge age, which avoids an influence of rapid propagation of heterotrophic bacteria to autotrophic denitrification flora; and a nitrification system adopts half shortcut nitrification, which stably maintains shortcut more easily, ensures the nitrosification rate of the nitrification system, and provides guarantee for denitrification stability of the system. The anaerobic ammonium oxidation technique is applied to deep denitrification treatment of domestic sewage, which reduces the oxygen consumption by 60% compared with the conventional denitrification method, is free of additional carbon sources and neutralizers, and realizes high-efficiency low-energy consumption municipal sewage treatment.

The invention discloses an operating method for a high-efficient anaerobic ammonium oxidation reactor. The method comprises the steps of (1) inoculating anaerobic granular sludge in an anaerobic reactor, the wherein the anaerobic granular sludge accounts for 30-90% of total volume of the reactor; and (2) taking nitrogenous simulating wastewater as reaction inflowing water, wherein the temperatureof the reactor is controlled to be in 18-37 DEG C; and in a reactor starting stage, remaining hydraulic power for 12-48h, adjusting reaction operating conditions according to concentration of ammonianitrogen and / or nitrite nitrogen, operating the anaerobic reactor for 30-150d, and forming high-efficient anaerobic ammonium oxidation granular sludge enriched with anaerobic ammonium oxidation bacteria. The method improves total nitrogen load of the reactor in a way that the load is increased gradually by lower load so as to be beneficial to stable increasing of domestication enrichment and nitrogen removing rate of the anaerobic ammonium oxidation bacteria, can effectively avoid matrix restraining of anaerobic ammonium oxidation and is beneficial to reducing process operating cost when the reactor operates under a room temperature condition.

The present invention relates to a deep denitrification process and device for domestic sewage without additional carbon source. The present invention is a combination process composed of anaerobic acidification tank, micro-aeration vertical underflow wetland and horizontal underflow wetland. The specific process is as follows: The domestic sewage enters the anaerobic acidification tank; the effluent from the anaerobic tank enters the micro-aeration vertical subsurface flow wetland; the treated sewage from the micro-aeration vertical subsurface flow wetland enters the horizontal subsurface flow constructed wetland. The effluent from horizontal subsurface flow wetlands can be used to supplement static landscape water bodies and other purposes. The present invention controls the ratio of NH4+-N / NO3--N in the horizontal subsurface flow wetland influent to 1-1.4:1 through the adjustment of appropriate process parameters, and the actual BOD5 / N is far lower than the theoretical value of denitrification BOD5 / N Under these conditions, anaerobic ammonium oxidation can be stably realized in constructed wetlands, forming a low-cost, high-removal sewage deep denitrification process. Micro-aeration vertical flow wetlands + horizontal subsurface flow wetlands can be applied to sewage treatment plants. Advanced water treatment can also be used for decentralized domestic sewage treatment. The invention has the advantages of simple structure, low cost and convenient operation and maintenance, and can achieve a TN removal rate of over 95%, stable pollutant removal effect, and effluent water quality up to Class IV standard of surface water.

The invention relates to a technique of nitrococcus and anaerobic ammonium-oxidation bacteria immobilization and mesothermal sewage treatment, which consists of nitrococcus immobilization technique and anaerobic ammonium-oxidation bacteria immobilization technique and combination of the two techniques is realized in an anaerobic baffled reactor under the condition of 20 to 25 DEG C. Concentration of nitrogen of the inlet sewage is below 100mg L<-1>; nitrite is produced during the middle part by nitrosoation reaction; the rest ammonia is carried out the anaerobic ammonium-oxidation reaction with the nitrite that the nitrogen is produced to get out of the system to ensure the nitrogen in the sewage be high efficiently removed in the mesothermal condition.The invention has the advantages that: (1) environment of vector is in favor of proliferation of biological cell, which can raise the concentration of microbiology which participate reaction to enhance reaction efficiency; (2) under the situation of no consumption of organic carbon source and acid-bases neutralizer as well as decrease of oxygen consumption, biological nitrogen removal can be realized and sewage treatment temperature is lowered to 20 to 25 DEG C, which has great energy-saving benefit.

The invention provides a device and method for treating low-C / N (carbon / nitrogen) ratio urban sewage by an anoxic / aerobic SBR-DEAMOX (denitrifying ammonium oxidation) denitrification process. One part of the urban sewage firstly enters an anoxic / aerobic SBR reactor and is subjected to pre-denitrifying and nitrifying reaction; and the produced nitrifying liquid is mixed with the other part of raw sewage, and the mixture enters a partial DEAMOX reactor for denitrification. The method comprises the following steps that: 65-85% of the raw water enters the anoxic / aerobic SBR reactor; the pre-denitrifying process is performed by use of the carbon source in the raw water to reduce the residual NO3<->-N of the system in the previous cycle; the NH4<+>-N is oxidized into NO3<->-N by aeration; the nitrifying liquid and 15-35% of the raw water together enter the DEAMOX reactor; and by taking the NO2<->-N produced by partial denitrifying as an electron acceptor, the NH4<+>-N in the raw water generates N2 through anaerobic ammonium oxidation reaction to realize deep denitrification of low-C / N ratio urban sewage. The technology makes full use of the carbon source in the raw water, does not need an external carbon source, saves energy consumption of aeration, and is an economical and efficient new means for solving the problem in the denitrification of low-C / N ratio urban sewage.

The invention discloses a nitrite bacteria growth promoter including the components: 40-100 parts by weight, preferably 50-80 parts by weight, of metal salts; 5-30 parts by weight, preferably 10-20 parts by weight, of an amine substance; 0.05-1.5 parts by weight, preferably 0.1-1.0 part by weight, of organic acid hydroxylamine; and 10-40 parts by weight, preferably 20-30 parts by weight, of Na2SO3; the metal salts comprise a calcium salt, a magnesium salt, a ferrous salt and a copper salt, and the molar ratio of Ca<2+> to Mg<2+> to Fe<2+> to Cu<2+> is (5-15) to (5-25) to (1-8) to (0.5-5), preferably (8-12) to (10-20) to (2-6) to (1-4). The promoter has the advantages of simple formula and easy preparation, can be used in the cultivation process of nitrite bacteria, can also be directly added into a sewage treatment system, accelerates starting of short-cut nitrification-denitrification and short-cut nitrification-anaerobic ammonium oxidation processes and achieves stable operation.

The invention discloses a method by using an up-flow anaerobic sludge blanket - biomemebrane reactor to quickly cultivate anaerobic ammonium oxidation bacteria, comprising the following steps: enriched microorganisms are preserved in an internal membrane of a UASB reactor; garbage landfill is selected for treating activated sludge during the leachate SBR process as seed sludge, and seeded sludge quantity is 45 to 65 percent of effective volume of the reactor; a constant temperature circulating water bath is adopted to maintain temperature of a reaction zone to be 1 DEG C higher or lower than 32 DEG C; waste water is synthesized by adoption of manpower, and waste water components comprise NH4Cl, NaNO2, MgSO4, KH2PO4, CaCl2, NaHCO3, a microelement I and a microelement II; mass ratio of NH4<+>-N and NO2<->-N during the process of water distribution is controlled to be ranged from 1 to 1.0 to 1 to 1.6; PH value of influent is adjusted to be 7.4 to 7.8. The invention has the advantages of simple technology, stable system operation, high nitrogen removal rate, short acclimation concentration time and so on.

The invention discloses a technology for treating domestic sewage by realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation in a sequencing batch reactor, and belongs to the field of the sewage sludge biological treatment. The technology comprises an inlet water tank, a partial short-cut nitrification reactor (PN-SBR), an intermediate water tank, an anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and an outlet water tank. The partial short-cut nitrification is performed in the partial short-cut nitrification reactor (PN-SBR), and a part of ammonia nitrogen in raw water is converted to nitrite nitrogen. The influent ammonia nitrogen and the nitrite nitrogen are converted to a nitrogen gas and a little of nitrate nitrogen by anaerobic ammonium oxidation bacteria in the anaerobic ammonia oxidation coupling sludge fermentation and denitrification reactor (ASFD-SBR), and the generated nitrate nitrogen is reduced to the nitrogen gas by a carbon source generated by sludge fermentation, wherein static bed filler is used for retaining the anaerobic ammonium oxidation bacteria, and denitrification and sludge fermentation processes are performed in floc sludge. The technology is capable of saving energy consumption, and simultaneously realizing the deep denitrification of theurban domestic sewage in a low carbon nitrogen ratio (C / N) and the recycling of the sludge.

The invention discloses a single-stage whole process autotrophic denitrification sewage treatment device and a technique thereof. The device comprises a reactor, a water outlet pump, a stirrer, a separation membrane component and an aeration membrane component, wherein the separation membrane component is arranged at the central part inside the reactor; the aeration membrane component consists ofa membrane tube which is wound on the inner wall of the reactor; and an air inlet pipe is connected with the aeration membrane component, and a water inlet of a water outlet pump is connected with theseparation membrane component by a pipeline. The method mainly comprises: the dissolved oxygen is controlled to be about 0.5-1.0mg / L, and partial short-cut nitrification is carried out on ammonia nitrogen under the action of ammonia-oxidizing bacteria; and then, aeration is stopped, denitrification is completed by anaerobic ammonium oxidation, and clean outlet water can be obtained by membrane separation. The invention leads the aeration membrane and the separation membrane to be arranged inside the same reactor to form a membrane aeration separating reactor, thus coupling bubble-free aeration, membrane separation and biological degradation. By utilizing the characteristics of high efficiency and easy control of membrane aeration, the good short-cut nitrification of nitrogenous effluent can be realized.

The invention relates to a method for the anaerobic ammonia oxidation treatment of low-concentration ammonia nitrogen wastewater. The method is characterized in that sludge containing anaerobic bacteria is inoculated into an anaerobic traverse baffle reactor under an anaerobic condition; the alkalescent ammonia nitrogen wastewater with 10 to 20mg / L of the concentrations of ammonia nitrogen and nitrite nitrogen enters the anaerobic traverse baffle reactor by an inlet water storage bottle, and a constant-current peristaltic pump is used for controlling the hydraulic stay time to be from 24 hours to 48 hours and the reaction temperature to be from 25 DEG C to 30 DEG C; if anaerobic ammonium oxidation bacteria become dominant flora and both the removal rates of the ammonia nitrogen and nitrite nitrogen reach 80 percent for 5 days, the anaerobic traverse baffle reactor is successfully started; then, other low-concentration ammonia nitrogen wastewater enters the anaerobic traverse baffle reactor by the inlet water storage bottle, and the hydraulic stay time is controlled to be from 12 hours to 48 hours; and finally, both the removal rates of the ammonia nitrogen and the nitrite nitrogen can reach about 80 percent.

The invention provides a method for cultivating anaerobic ammonium oxidation granular sludge. The method comprises the steps of: mixing and putting two or three kinds of anaerobic methanogenic granular sludge, nitrification aerobic granular sludge and hypoxia denitrification granular sludge into an upflow anaerobic reactor; pumping simulate waste water containing ammonia nitrogen and nitrite nitrogen to start; keeping the temperature of 25 to 35 DEG C in the reactor and the pH value of 7.5 to 8.0 without dissolved oxygen, and keeping hydraulic detention time of 8 to 24 hours; and stabilizing for a period of time to obtain the anaerobic ammonium oxidation granular sludge from the reactor. The invention has the advantages of having good hydraulic performance and microbial activity of the anaerobic ammonium oxidation granular sludge cultivated by the method, and greatly improving the operation effectiveness and the operation stability of the reactor.

The invention provides a wastewater treatment process of anaerobic ammonia oxidation and sulfur-based autotrophic denitrification coupled denitrification and desulphuration. The process is characterized in that a mixed culture of anaerobic ammonium oxidation bacteria and thiobacillus denitrificans is taken as a main part; in the same reactor, the temperature is controlled between 25-35 DEG C, the pH value of wastewater is adjusted to 7.5-8.0, and the hydraulic retention time is 2.5-10 hours; the concentration of ammonia in the wastewater calculated according to the element N is 40-300mg / L<-1>, the concentration of nitrite in the wastewater calculated according to the element N is 50-390mg / L<-1> and the concentration of sulfide in the wastewater calculated according to the element S is 30-170mg / L<-1>; the concentration ratio of the ammonia to the nitrite calculated according to the element N is 1:1-1.32, and the concentration ratio of the nitrite calculated according to the element S to the ammonia calculated according to the element N is 1:1.54-1.74. The process is a novel wastewater treatment technology for synchronically performing denitrification and desulphuration economically efficiently by using treatment of wastes with processes of wastes against one another.

The invention discloses a method for treating organic nitrogen in sewage. The method comprises the following steps of: treating sewage by using a sequencing batch biofilm reactor, decomposing macromolecular organic nitrogen into micromolecular organic nitrogen under the coexistence of anaerobic, anoxic and aerobic conditions, removing the micromolecular organic nitrogen by using the degradation of microbes, and simultaneously removing ammonia nitrogen and nitrate nitrogen through short-cut nitrification and denitrification and anaerobic ammonium oxidation; and treating by using a coagulation-microfiltration method, precipitating to remove bacteria, suspended solids (SS) and other nitrogen-containing substances by adding a coagulant, and removing refractory macromolecular organic nitrogen such as humic acid, fulvic acid and the like through filtration of a hollow fiber microfiltration membrane to reduce the total amount of the organic nitrogen in the sewage. The invention also discloses a device for implementing the treatment method.

The invention discloses an energy recovery-based landfill leachate autotrophic nitrogen removal method belonging to the field of sewage treatment. A device mainly comprises three parts of respectively an anaerobic methane-generating reactor, a partial nitrification reactor and an anaerobic ammonia oxidation reactor, wherein landfill leachate firstly enters the anaerobic methane-generating reactor, anaerobic methanogens can convert organic matters in the landfill leachate into an energy gas methane and the energy gas methane is recovered, then the water quantity is adjusted through a middle water tank, the landfill leachate enters the partial nitrification reactor, and the partial nitrification reactor runs in a low-oxygen aeration manner, and a partial nitrification process is realized through controlling the aeration time; and finally, after the water quantity is adjusted through the middle water tank, the landfill leachate enters the anaerobic ammonia oxidation reactor, and an autotrophic nitrogen removal process of the landfill leachate is completed under the assistance of anaerobic ammonium oxidation bacteria. According to the energy recovery-based landfill leachate autotrophic nitrogen removal method, energy resources in the landfill leachate can be fully recovered, and the operation cost and the energy consumption of treating the landfill leachate are reduced.

The invention provides a method for rapid starting of anaerobic ammonium oxidation granular sludge by using UASB, which belongs to the field of treatment and regeneration of municipal sewage. According to the invention, a UASB reactor is used, wherein the upper part of the UASB reactor is filled with a filling material and used as a biomembrane reaction zone, and the lower part of the UASB reactor is an activated sludge zone; the stages of immobilization of a biomembrane, starting of the activated sludge and reinforcement of the granular sludge are carried out; thus, in 66 days, overall nitrogen removal load reaches 4.34 kgN / m<3> / d, an average particle size of the sludge is 1.0 mm, SV2 is equal to SV10, and the anaerobic ammonium oxidation granular sludge is successfully started; and compared to a method of culturing the anaerobic ammonium oxidation granular sludge by using an SBR reactor advocated by Zhihong Zhao and the like (2007), the method provided by the invention has the advantages that time for starting of the granular sludge is reduced by 25 d and overall nitrogen removal load is 4.3 kgN / m<3> / d higher.

The invention relates to a method for deep denitrification of low carbon source urban sewage and belongs to the technical field of biological sewage treatment. Urban sewage and refluent nitrification liquid enter a short-range denitrification anaerobic ammonium oxidation area of a deep denitrification bioreactor, denitrifying bacteria on a biofilm outer layer reduce nitrate nitrogen in the refluent nitrification liquid into nitrite by utilizing a limited organic carbon source in raw water, and anaerobic ammonium oxidizing bacteria on a biofilm inner layer enable the generated nitrite nitrogen and ammonia nitrogen in part of raw water to react and be converted into nitrogen; the sewage enters an aerobic area to be subject to short-range nitration, so that the remaining part of ammonia nitrogen of the sewage is converted into nitrite nitrogen; then the sewage enters the anaerobic ammonium oxidation area, enters the aerobic area and the anaerobic ammonium oxidation area, and finally enters a nitrification area, so that the nitrate nitrogen and the ammonia nitrogen in the raw water are oxidized to be nitrate nitrogen. According to the method, through the united application of short-range denitrification-anaerobic ammonia oxidation and short-range nitrification-anaerobic ammonia oxidation, the deep denitrification of the low carbon source urban sewage is performed.

The invention provides a method for treating high-concentration nitrate waste water and municipal sewage through denitrification anaerobic ammonium oxidation SBR, belonging to the field of sewage biotreatment. The method comprises the following steps: firstly, culturing and acclimating denitrifying bacteria population and anaerobic ammonium oxidation bacteria population which have inadequate denitrification characteristic, then inoculating anaerobic ammonium oxidation sludge and denitrifying sludge with high nitrite accumulation rate in the same reactor, leading nitrate waste water and municipal sewage to flow in denitrification anaerobic ammonium oxidation SBR reactor at a certain ratio, performing anaerobic ammonium oxidation to nitrite accumulated during reduction of nitrite and ammonium nitrogen in the municipal sewage to generate nitrogen gas and synchronously removing. According to the method, nitrate generated during anaerobic ammonium oxidation can be reduced through denitrifying bacteria without the condition of adding a carbon source, the nitrogen removal efficiency of a system can be improved, and the effective route for realizing sewage nitrogen removal with high efficiency and low energy consumption can be provided.

The invention discloses a device and method for realizing high-efficiency and low-consumption nitrogen and phosphorous removal of municipal sewage and belongs to the field of biological treatment of sewage and sludge. Sewage in a raw water tank sequentially enters an anaerobic zone and an aerobic zone of a reactor for enhanced biological phosphorus removal and whole-process nitrification through awater feeding pump; anaerobic phosphorus release is performed in the anaerobic zone; whole-process nitrification and aerobic phosphorus absorption effects are carried out in the aerobic zone; subsequently, the sewage is drained into a settling pond, supernate enters a reactor for fermentation coupling, short-cut denitrification and synchronous anaerobic ammonium oxidation of excess sludge. The excess sludge is quantitatively fed into the reactor for fermentation coupling, short-cut denitrification and synchronous anaerobic ammonium oxidation of the excess sludge each day; short-cut denitrifying bacteria transform nitric nitrogen into nitrite nitrogen by using organic matters produced by hydrolysis and fermentation of the sludge; anaerobic ammonium oxidizing bacteria transform excess ammonia nitrogen and nitric nitrogen into nitrogen. According to the device and the method disclosed by the invention, deep nitrogen and phosphorus removal of the municipal sewage is realized by using an enhanced biological phosphorus removal process, a short-cut denitrification process and an anaerobic ammonium oxidation process; moreover, sludge reduction is realized by the hydrolysis and fermentation effects of the sludge, so that energy conservation and consumption reduction are realized.

The invention discloses a device and method for treating domestic wastewater through sectioned water output shortcut nitrification-Anammox / denitrification and belongs to the field of wastewater treatment. The device is provided with a raw water tank, a shortcut nitrification reactor, a first middle water tank, a second middle water tank and an Anammox / denitrification bio-membrane reactor. The method comprises the steps that domestic wastewater enters the shortcut nitrification reactor, anaerobic stirring and denitrification are performed firstly to remove nitrite nitrogen left in a previous period, and 1 / 3 of drained water provides ammonia nitrogen for anaerobic ammonia oxidation reaction; anaerobic stirring is performed to release phosphorus, then shortcut nitrification and aerobiotic phosphorus absorbing are performed through aeration, and 1 / 3 of secondarily drained water provides nitrite nitrogen for anaerobic ammonia oxidation reaction; denitrifying bacteria utilize a raw water carbon source in the primarily drained water to reduce nitrate nitrogen produced through the anaerobic ammonia oxidation reaction into nitrogen. The coupling between anaerobic ammonium oxidation bacteria and the denitrifying bacteria is achieved by utilizing a bio-membrane, the raw water carbon source of sectioned output water is fully utilized, simultaneous phosphorus and nitrogen removal of the domestic wastewater at low carbon nitrogen ratio is achieved, energy is saved, the consumption is reduced, and sludge yield is small.

The invention discloses a method for rapidly starting an anaerobic ammonium oxidation reactor. With an up-flow anaerobic sludge blanket digestion adopted, the method comprises the following steps of: adding mixed sludge composed of anaerobic digested sludge and sludge of a secondary sedimentation tank of a sewage treatment plant into a reactor, then adding bamboo charcoal particles with the diameter of 3-5mm, specific area of 14.0-31.2m<2> / g, density of 750kg / m<3> and volume density of 520kg / m<3>; and under airtight and shading conditions, inputting simulated waste water into a reactor to carry out continuous culture starting, wherein operating conditions are that: temperature of the reactor is maintained to be 25-35 DEG C, pH of waste water is 7.0-8.0, hydraulic power retention period is 24-48 hours, and concentration ratio of simulated waste water ammonia nitrogen to nitrite nitrogen is 1: (1.0-1.5). The method disclosed by the invention is convenient to apply, has low cost, can greatly reduce starting time of the anaerobic ammonium oxidation reactor and has wide application prospect to low carbon nitrogen ratio waste water.

The invention discloses a method for treating high-content ammonia and nitrogen for shortcut nitrification to discharge effluent by coupling simultaneous denitrification of sludge fermentation with autotrophic nitrogen removal, belonging to the technical field of biochemical process sewage treatment. The high-efficiency removal of total nitrogen in wastewater and the reduction of sludge are realized in the same space by combined action of hydrolysis acidifying bacteria, denitrifying bacteria and anaerobic ammonium oxidation bacteria. The method is characterized in that part of NO2--N in effluent is reduced by short-chain fatty acid generated by hydrolytic acidification of residual sludge under the action of the denitrifying bacteria; and the other part of NO2--N and ammonia nitrogen released in the hydrolytic acidification process are removed by an anaerobic ammonia oxidation reaction, thereby greatly reducing the concentration of total nitrogen in the effluent and finishing the reduction of the residual sludge simultaneously. The technology is suitable for advanced treatment of high-content ammonia and nitrogen for shortcut nitrification to discharge the effluent.

The invention provides a culture method of salt-tolerant anaerobic ammonium oxidation bacteria, which comprises the following steps of: A, enrichment culture: performing enrichment culture on the strain to obtain anaerobic ammonium oxidation bacteria; and B, bacteria acclimation culture: gradually increasing the concentration of salt in the culture solution to perform salt tolerance acclimation culture of the anaerobic ammonium oxidation bacteria subjected to the enrichment culture in the step A, wherein the acclimation period of the bacterial at each salt concentration is 15-30 days; and the step A and step B both adopt sequencing batch culture, and the dissolved oxygen value in the culture solution is 0-0.5mg / L. The bacteria cultured by the method provided by the invention are applied to high-salt ammonia nitrogen wastewater, and the total nitrogen removal rate is high. By adopting the method provided by the invention to culture the salt-tolerant anaerobic ammonium oxidation bacteria, the range of available substrates is wide, and the culture is easy to implement; and additional organic carbon source is not required in the bacteria culture and application process, investment is greatly saved, and the wastewater treatment cost is reduced. The bacteria culture method provided by the invention can be applied to large-scale production, and has good economic and environmental benefits.

The invention discloses a combined process for building partial nitrosation-anaerobic ammonium oxidation garbage percolate. The method comprises the following steps of: normally separating and removing, filtering and settling garbage percolate, anaerobically and biochemicalally pre-processing; putting the pre-processed garbage percolate in a started and steady SBR (Sequencing Batch Reactor) reactor; controlling the temperature of the SBR reactor in a range of 25-35 DEG C; hydraulically staying for 2 to 3 days, wherein the dissolved oxygen concentration is 2 to 3 mg / L so that the mol concentration ratio of nitrosation nitrogen to ammonia nitrogen in the water is 0.8 to 1.4; flowing the water into an anaerobic reactor and carrying out the anaerobic ammonium oxidation to denitrify. The method provided by the invention controls the reaction condition of SBR reactor so that the ammonia nitrogen in the garbage percolate is partially nitrosated and then removed in the garbage percolate in the series anaerobe reactor. Compared with the traditional garbage percolate denitrifying process including nitration and denitrification, the method obviously reduces the addition of agents and the consumption of the power energy, reduces the processing cost of garbage percolate and is an energy-saving, consumption-emission and environmental-friendly processing process.

The process for treating an ammonium containing liquid by denitrification treatment of an ammonium containing liquid containing at least ammonium comprises carrying out nitrate reduction treatment of reducing nitrate contained in or added to the ammonium containing liquid to nitrite, and carrying out anaerobic ammonium oxidation treatment of simultaneously anaerobically denitrifying nitrite produced in the nitrate reduction treatment and ammonium contained in the ammonium containing liquid by anaerobic ammonium oxidizing bacteria.

The invention relates to the field of water treatment, and particularly relates to a method for enriching anaerobic ammonium oxidation bacteria by performing nitration treatment on common activated sludge. The method is characterized in that nitration treatment is performed on the common activated sludge, thus increasing the quantity of aerobiotic ammonium oxidation bacteria (AOB) in the sludge; some AOB are facultative anaerobes and capable of performing similar anaerobic ammonium oxidation in an oxygen-free condition; additionally, AOB generate hydroxylamine oxidoreductase which is beneficial to enrichment for the anaerobic ammonium oxidation bacteria; and activated carbon is poured in an activity enhancement phase to improve the attachment environment for the anaerobic ammonium oxidation bacteria, and the competitions of other bacteria and Anammox bacteria for the attachment environment of activated carbon can also be reduced. The invention provides a time-saving and efficient method for enriching anaerobic ammonium oxidation bacteria.