CN106745697A - A kind of method for controlling biochemical processing procedure of sewage nitration reaction process - Google Patents
A kind of method for controlling biochemical processing procedure of sewage nitration reaction process Download PDFInfo
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- CN106745697A CN106745697A CN201510802192.2A CN201510802192A CN106745697A CN 106745697 A CN106745697 A CN 106745697A CN 201510802192 A CN201510802192 A CN 201510802192A CN 106745697 A CN106745697 A CN 106745697A
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Abstract
The present invention relates to a kind of method for controlling biochemical processing procedure of sewage nitration reaction process, sewage containing ammonia carries out denitrogenation processing using biochemical process, Nitrosomas growth promoter is added during the aerobic nitrification of biochemical treatment, the growth promoter includes slaine, polyamines, organic acid azanol and Na2SO3, wherein slaine is 40-100 weight portions, and polyamines are 5-30 weight portions, and organic acid azanol is 0.05-1.5 weight portions, Na2SO3It is 10-40 weight portions；The slaine is made up of calcium salt, mantoquita, magnesium salts and/or ferrous salt.The present invention is by the Nitrosomas growth promoter that specific composition and proportioning are added in sewage aerobic nitrifying process, such that it is able to stability contorting nitration reaction process, really realizing short-cut nitrification and denitrification denitrogenation.
Description
Technical field
The invention belongs to technical field of biological sewage treatment, and in particular to a kind of method of effective control nitration reaction process of biochemical processing procedure of sewage containing ammonia.
Background technology
Short-cut nitrification-denitrification is also known as nitrite type bio-denitrification technology, exactly nitrifying process control is terminated in the nitrite stage, then carry out nitrogen Removal by Denitrification from Nitrite, compared with traditional biological denitrogenation technology, short-cut nitrification-denitrification bio-denitrification technology can shorten hydraulic detention time, 25% energy consumption and 40% carbon source can be saved, while excess sludge treating capacity can be reduced.Turn into one of study hotspot of sewage treatment area as a kind of new bio-denitrification technology.
At present, short-cut nitrification and denitrification mainly uses suspended active sludge, because sludge concentration is low in system, there are problems that reactor efficiency is low, service condition relatively, occur how maintaining after nitrite accumulation its exist steadily in the long term be short range biological denitrification technology key.The nitrite that ammoxidation process is formed under normal circumstances can completely be oxidized to nitrate.Although can result in HNO in nitrifying process by controlling the external conditions such as temperature, dissolved oxygen, pH and sludge age2Accumulation, but it is most of be at the laboratory research stage, current result of study shows that only the control device of high temperature can reach preferable stability.Some conditions such as high temperature is also difficult in Practical Project, so up to the present, realizing that the successful Application of biological denitrificaion is actually rare in Practical Project through nitrite approach.
CN1837091A discloses a kind of A/O techniques short-cut nitrification and denitrification sewage treatment control system and its On-Line Control Method.The technique sets ORP sensors, the inner circulating reflux amount of interior circulation controller kinetic-control system, the aeration rate of aerator controller kinetic-control system by setting DO sensors and pH sensors in Aerobic Pond in anoxic pond；Aeration control low DO concentration, is mainly controlled and realized by limited means.CN201458826U discloses a kind of short-cut nitrification and denitrification bioreactor, by bio-reaction zone, recirculating zone and air lift district's groups into integrated apparatus realize short-cut nitrification and denitrification.The process described above is that on the one hand the sludge acclimatization time is more long in system starting process using external condition control, and whether on-line instrument can accurately control that denitrification effect will be directly affected after another aspect longtime running.CN201110353738.2 discloses a kind of method for controlling biochemical processing procedure of sewage nitration reaction process, it is using nitrite carry out the microbial bacterial agent of denitrification denitrogenation and realize by to be added in biochemical processing procedure of sewage, although the invention can be with the process of stability contorting short-cut denitrification, but the preparation process of microbial inoculum is complicated, and dosage is larger.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of method of effective control nitration reaction process of biochemical processing procedure of sewage containing ammonia.The present invention is by the Nitrosomas growth promoter that specific composition and proportioning are added in sewage aerobic nitrifying process, such that it is able to stability contorting nitration reaction process, really realizing short-cut nitrification and denitrification denitrogenation.
The method of present invention control biochemical processing procedure of sewage nitration reaction process, including following content：Sewage containing ammonia carries out denitrogenation processing using biochemical process, and Nitrosomas growth promoter is added during the aerobic nitrification of biochemical treatment, and the growth promoter includes slaine, polyamines, organic acid azanol and Na2SO3, wherein slaine is 40-100 weight portions, preferably 50-80 weight portions, and polyamines are 5-30 weight portions, preferably 10-20 weight portions, and organic acid azanol is 0.05-1.5 weight portions, preferably 0.1-1.0 weight portions, Na2SO3It is 10-40 weight portions, preferably 20-30 weight portions；Described slaine is made up of calcium salt, mantoquita, magnesium salts and/or ferrous salt.
In Nitrosomas growth promoter of the present invention, slaine can be calcium salt, molysite and mantoquita, wherein Ca2+、Fe2+And Cu2+Mol ratio be（5-15）:（1-8）:（0.5-5）, preferably（8-12）:（2-6）:（1-4）；Or calcium salt, magnesium salts and mantoquita, wherein Ca2+、Mg2+And Cu2+Mol ratio be（5-15）:（5-25）:（0.5-5）, preferably（8-12）:（10-20）:（1-4）；Or calcium salt, magnesium salts, molysite and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Mol ratio be（5-15）:（5-25）:（1-8）:（0.5-5）, preferably（8-12）:（10-20）:（2-6）:（1-4）.
In Nitrosomas growth promoter of the present invention, calcium salt is CaSO4Or CaCl2, magnesium salts is MgSO4Or MgCl2, mantoquita is CuSO4Or CuCl2, molysite is FeSO4Or FeCl2。
In Nitrosomas growth promoter of the present invention, polyamines are the mixture of spermine, spermidine or both.The organic acid azanol is the mixture of formic acid azanol, hydroxylamine acetate or both.Adding for organic acid azanol can directly participate in the metabolic process of nitrobacteria, shorten enzymatic reaction process, accelerated cell growth as the matrix of azanol oxygen also enzyme.Additionally, the organic acid that organic acid azanol is discharged is conducive to the growth of some allotrophic nitrobacterias, be conducive to playing the population effect of nitrobacteria, be favorably improved the ability of microflora degradation pollutant.
In the inventive method, Nitrosomas growth promoter is added in the aerobic nitrification stage of reaction of biochemical treatment, can be added once daily or every several days, dosage is added according to promoter concentration 10-40mg/L in sewage disposal system, and preferably 20-30mg/L is added.Stop adding when nitrosoation rate stabilization is more than 80%, if can be added at any time when nitrosoation rate is reduced in the process of running used.
In the inventive method, a certain amount of microbial bacterial agent can be added while Nitrosomas growth promoter is added, nitrite type denitrification microorganism microbial inoculum as described in can use CN201110353738.2, dosage is the 0.01%-0.1% of handled wastewater volume per hour.
In the inventive method, biochemical wastewater treatment containing ammonia can be specific such as oxidation ditch process technique, SBR using the conventional biochemical processing method in this area（Intermittent activated sludge process technique）、AO（Anoxic-aerobic process）Or AAO（Anaerobic-anoxic-aerobic process）, can also be in BAF（Biofilter）And MBBR（MBBR）Deng being used in membrane bioreactor.Above-mentioned detailed process and condition containing ammonia waste water biochemical treatment method are well known to those skilled in the art.Temperature containing ammonia biochemical wastewater treatment is 18-40 DEG C, and dissolved oxygen is 0.1-3mg/L, and pH value is 7-9.
Under these conditions, it is ensured that the short-cut nitrification and denitrification denitrogenation of stabilization is realized in the case of mineralized nitrogen rate higher, ammonia nitrogen and nitrogen removal rate after treatment in sewage can reach more than 85%.Sewage containing ammonia is the sewage containing ammonia nitrogen of all suitable Biochemical methods, and wherein ammonia nitrogen concentration is generally 100-1500mg/L, COD（Chromium method, similarly hereinafter）Concentration is generally 150-4000mg/L.Sewage containing ammonia can preferably take continuum micromeehanics mode to be processed using batch water inlet or continuum micromeehanics mode.
The present invention is difficult to the low problem of stability contorting, nitric efficiency for nitration reaction process in existing short-cut nitrification and denitrification technique, the method that the utilization Nitrosomas growth promoter of proposition effectively controls nitration reaction process in biochemical processing procedure of sewage, can make the nitrite bacteria in activated sludge in slaine, polyamines, organic acid azanol and Na2SO3Collective effect under realize quick increment, organic acid azanol and Na2SO3Cooperation add, can effective control system dissolved oxygen, contribute to suppression nitrite nitrogen to be further converted into nitrate nitrogen, and then nitration reaction process can be controlled.
Specific embodiment
The present invention program is described in detail with reference to specific embodiment.
The present invention proposes that a kind of method for controlling biochemical processing procedure of sewage nitration reaction process is mainly using Nitrosomas growth promoter to realize.The accelerator that Nitrosomas growth promoter used in the present invention can be prepared according to the method described in CN201410585483.6, CN201410585481.7 and CN201410585655.X, the method described in preferably CN201410585655.X.Prepared by the Nitrosomas growth promoter used by the present invention easy, it is easy to use, nitrite bacteria can be promoted to grow after adding use during biochemical treatment, suppress nitrate bacteria growth, so that the nitrite bacteria in activated sludge turns into dominant microflora, and then nitration reaction stability contorting is directly carried out into denitrification in nitrous acid phase.
The ratio and formula for being first according to the Nitrosomas growth promoter of table 1 prepare metal salt solution, preceding by polyamines, organic acid acid azanol, Na using2SO3It is added in metal salt solution, prepares Nitrosomas growth promoter I-III, the promoter concentration is 0.5g/L.
The formula and ratio of the Nitrosomas growth promoter of table 1
Microbial bacterial agent A and B that denitrification microorganism microbial inoculum used in the present invention is prepared using patent CN201110353738.2 embodiments 1.
Control of the embodiment 1 to certain sewage treatment plant SBR denitrification systems
Certain sewage treatment plant is processed based on the ammonia-containing water of generation during nitrogen fertilizer production using SBR techniques, and average influent ammonium concentration is 475mg/L, and COD concentration is 1100mg/L.Ammonia nitrogen average removal rate is 80% or so after conventional treatment, and nitrosoation rate only has 20%.When changing water every time, according to the concentration of system for handling internal accelerator for 30mg/L adds Nitrosomas growth promoter I, operating condition is 29 DEG C of temperature, pH7.8-8.2, dissolved oxygen 0.5-2.0mg/L, after operation 5 days, nitrosoation rate brings up to 80%, ammonia nitrogen removal frank realizes the short-cut nitrification and denitrification of stabilization up to more than 85% simultaneously.
Control of the embodiment 2 to certain sewage treatment plant A/O denitrification process
Ammonia nitrogen removal frank is more than 80% during the A/O denitrification system longtime runnings of certain sewage treatment plant, and nitrogen removal rate is less than 60%, and a large amount of unreacted nitrate nitrogens have been detected in system.According to the concentration of system for handling internal accelerator for 25mg/L adds Nitrosomas growth promoter II, operating condition is 30 DEG C of temperature, pH8.0-8.8, dissolved oxygen 0.1-1.5mg/L, nitrogen removal rate is all the time more than 85% after stabilization, nitrosoation rate is up to more than 80%, nitrogen removal rate is significantly improved after illustrating to add accelerator, and by nitration reaction process stability contorting in nitrous acid phase.
Certain sewage treatment plant of embodiment 3 uses the control of BAF technical process
Certain sewage treatment plant is processed during advanced treatment of wastewater using BAF techniques, and average influent ammonium concentration is 75mg/L, and COD concentration is 150mg/L.Ammonia nitrogen average removal rate is 80% or so after treatment, according to the concentration of system for handling internal accelerator for 10mg/L adds Nitrosomas growth promoter III, operating condition is 25 DEG C of temperature, pH7.5-8.0, dissolved oxygen 1.0-2.0mg/L, after operation a period of time, nitrosoation rate brings up to 90%, while ammonia nitrogen removal frank is up to more than 90%.
Embodiment 4
, with embodiment 1, difference is for handling process and process conditions：While Nitrosomas growth promoter is added according to 0.02% dosage to nitrifying process in add microbial bacterial agent A.After operation 3 days, nitrosoation rate brings up to 85%, while ammonia nitrogen removal frank is up to more than 90%.
Embodiment 5
, with embodiment 2, difference is for handling process and process conditions：While Nitrosomas growth promoter is added according to 0.01% dosage to nitrifying process in add microbial bacterial agent B.All the time more than 90%, nitrosoation rate is up to more than 85% for nitrogen removal rate after stabilization.
Claims (10)
1. it is a kind of control biochemical processing procedure of sewage nitration reaction process method, it is characterised in that including following content：Sewage containing ammonia carries out denitrogenation processing using biochemical process, and Nitrosomas growth promoter is added during the aerobic nitrification of biochemical treatment, and the growth promoter includes slaine, polyamines, organic acid azanol and Na2SO3, wherein slaine is 40-100 weight portions, and polyamines are 5-30 weight portions, and organic acid azanol is 0.05-1.5 weight portions, Na2SO3It is 10-40 weight portions；The slaine is made up of calcium salt, mantoquita, magnesium salts and/or ferrous salt.
2. method according to claim 1, it is characterised in that：In the Nitrosomas growth promoter, slaine is calcium salt, molysite and mantoquita, wherein Ca2+、Fe2+And Cu2+Mol ratio be（5-15）:（1-8）:（0.5-5）；Or calcium salt, magnesium salts and mantoquita, wherein Ca2+、Mg2+And Cu2+Mol ratio be（5-15）:（5-25）:（0.5-5）；Or calcium salt, magnesium salts, molysite and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Mol ratio be（5-15）:（5-25）:（1-8）:（0.5-5）.
3. method according to claim 1 and 2, it is characterised in that：In the Nitrosomas growth promoter, calcium salt is CaSO4Or CaCl2, magnesium salts is MgSO4Or MgCl2, mantoquita is CuSO4Or CuCl2, molysite is FeSO4Or FeCl2。
4. method according to claim 1, it is characterised in that：In the Nitrosomas growth promoter, polyamines are the mixture of spermine, spermidine or both.
5. method according to claim 1, it is characterised in that：In the Nitrosomas growth promoter, organic acid azanol is the mixture of formic acid azanol, hydroxylamine acetate or both.
6. method according to claim 1, it is characterised in that：Nitrosomas growth promoter is added in the aerobic nitrification stage of reaction of biochemical treatment, daily or added once every several days, dosage is added according to promoter concentration 10-40mg/L in sewage disposal system, stops adding when nitrosoation rate stabilization is more than 80%.
7. method according to claim 1, it is characterised in that：CN201110353738.2 is added while Nitrosomas growth promoter is added
Described nitrite type denitrification microorganism microbial inoculum.
8. method according to claim 7, it is characterised in that：The dosage of microbial bacterial agent is the 0.01%-0.1% of handled wastewater volume per hour.
9. method according to claim 1, it is characterised in that：Temperature containing ammonia biochemical wastewater treatment is 18-40 DEG C, and dissolved oxygen is 0.1-3mg/L, and pH value is 7-9.
10. method according to claim 1, it is characterised in that：Sewage containing ammonia is the sewage containing ammonia nitrogen of all suitable Biochemical methods, and wherein ammonia nitrogen concentration is generally 100-1500mg/L, COD（Chromium method, similarly hereinafter）Concentration is generally 150-4000mg/L.
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| CN112093890A (en) * | 2020-07-31 | 2020-12-18 | 国投信开水环境投资有限公司 | Method for treating sewage by short-cut nitrification |
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