CN105923752A - Method for achieving shortcut nitrification by utilizing formic acid - Google Patents
Method for achieving shortcut nitrification by utilizing formic acid Download PDFInfo
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- CN105923752A CN105923752A CN201610346053.8A CN201610346053A CN105923752A CN 105923752 A CN105923752 A CN 105923752A CN 201610346053 A CN201610346053 A CN 201610346053A CN 105923752 A CN105923752 A CN 105923752A
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- formic acid
- short distance
- distance nitration
- method utilizing
- realize short
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
-
- 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
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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 belongs to the technical field of sewage treatment and particularly relates to a method for achieving shortcut nitrification by utilizing formic acid. The shortcut nitrification is stably achieved by adding the formic acid in a stably operating SBR under same conditions. The method is a chemical method for achieving the shortcut nitrification, has no severe requirements for environment conditions, does not need to control dissolved oxygen, is suitable for domestic wastewater and high-concentration ammonia and nitrogen wastewater and improves the shortcut nitrification reaction rate.
Description
Technical field
The invention belongs to sewage water treatment method technical field, be specifically related to one and utilize formic acid to realize short distance nitration
Method.
Background technology
It is the main cause causing China's shortage of water resources that water pollutes.Causing each pollutant of water pollution
In, nitrogen source is polluted increasingly severe, it has also become the emphasis of following sewage disposal.Ammonia nitrogen in waste water is to cause
One of important pollutant of body eutrophication and environmental pollution, easily cause algae and other microorganisms in water big
Amount breeding, causes lake eutrophication, marine red tide etc., the productive life of serious threat to the mankind and ecology
Balance.Short-cut nitrification and denitrification denitrification process is the novel biological dinitrification technology the most just grown up,
This technology sludge output is few, compact efficient and energy efficient, is the most increasingly widely applied.The most real
The method that existing short distance nitration uses is mostly the control parameter such as dissolved oxygen and pH, and reaction rate is low, short distance nitration
Instability, affects the popularization and application of short distance nitration.
Summary of the invention
In order to fast and stable realize short distance nitration, the invention provides one and utilize formic acid to realize short distance nitration
Method, in stable SBR, add formic acid, other conditions are constant, can realize short distance nitration.
The present invention is achieved in that the method utilizing formic acid to realize short distance nitration, by stable
Adding formic acid in SBR, other conditions are constant, stably realize short distance nitration.
Further, the method utilizing formic acid to realize short distance nitration comprises the steps:
1) in stable SBR, every day adds a formic acid, repeats 8-12 days, forms short distance
Nitrification；
2), after preliminarily forming short distance nitration, change into every 3 days adding a formic acid, make short distance nitration stably realize.
Further, step 1) neutralization procedure 2) in formic acid dosage be 0.2-0.3mL/L.
Further, step 1) neutralization procedure 2) in formic acid dosage be 0.25mL/L.
Further, step 1) in add formic acid and repeat 10 days.
Further, step 1) in add the time interval of formic acid for twice be 23-25h.
Further, step 1) in add the time interval of formic acid for twice be 24h.
Further, step 2) in add the time interval of formic acid for twice be 45-50h.
Further, step 2) in add the time interval of formic acid for twice be 48h.
Compared with prior art, it is an advantage of the current invention that with formic acid as inhibitor, Selective depression nitre
Acid bacterium and retain Nitrosomas, SBR realizes short distance nitration, this method be chemical method realize short distance nitre
Change, to environmental condition without rigors, it is not necessary to control dissolved oxygen, it is adaptable to sanitary sewage and ammonia nitrogen in high density
Waste water, improves short distance nitration reaction rate.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation:
Three nitrogen (ammonia nitrogen, nitrite nitrogen, nitrate nitrogen) concentration change in time when Fig. 1 is for adding 0.25mL/L formic acid
Change.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein is used only for solving
Release the present invention, be not intended to limit the present invention.
It is that ammonia experiences complete nitrification and denitrification process and makes ammonia that traditional biological denitrification process realizes denitrogenation of waste water
It is transformed into gaseous nitrogen eventually to remove from system.And short distance nitration denitrogenation is cultured water is that electron acceptor realizes
Denitrogenation, will control at Nitrification Stage by ammonium oxidation, then carry out denitrification.Short-cut nitrification and denitrification
It is crucial that nitrifying process is controlled at NO2 -Stage, i.e. NO2 -Without being oxidized to NO3 -, and directly as electronics
Final hydrogen acceptor carries out denitrification.Short-cut nitrification and denitrification need not the step for that experience forms nitrate, subtracts
Lack the demand to substrate and oxygen, reduce operating cost.
Sequencing batch active sludge (SBR) is as sewage water treatment method, and technological process is simple, floor space
Little, reaction rate is high, and effluent quality is good, and impact resistance ability is strong.
In order to simply and rapidly realize short distance nitration, the invention provides one and utilize formic acid to realize short distance nitration
Method, by adding formic acid in stable SBR, other conditions are constant, stably realize short distance nitre
Change.
Embodiment 1,
Utilization adds formic acid and realizes short distance nitration:
1) in stable SBR, a formic acid is added every day according to 0.25mL/L, every minor tick 24h,
Repeating 10 days, detection calculates nitrosoation rate [NO2 --N/(NO2 --N+NO3 --N)] reach 75% with
After on, it was demonstrated that realized short distance nitration；
2), after preliminarily forming short distance nitration, change into every 3 days adding a formic acid, make short distance nitration stably realize.
With reference to Fig. 1, for the short distance nitration three nitrogen (ammonia nitrogen, nitrite nitrogen, the nitre that realize according to the method for embodiment 1
Nitrogen) concentration changes with time figure, it is known that, the when that stable SBR throwing in continuously formic acid 10 days,
Water outlet ammonia nitrogen concentration reduces rapidly, and water outlet nitrite nitrogen concentration raised rapidly 10 days when, water outlet nitrate nitrogen in
Now reducing trend, after 10 days, three nitrogen concentrations are stable tendency, form stable short distance nitration.
Embodiment 2,
Utilization adds formic acid and realizes short distance nitration:
1) in stable SBR, a formic acid is added every day according to 0.2mL/L, every minor tick 23h,
Repeating 8 days, form short distance nitration, detection calculates nitrosoation rate [NO2 --N/(NO2 --N+NO3 --N)]
After reaching more than 75%, it was demonstrated that realized short distance nitration；；
2), after preliminarily forming short distance nitration, change into every 3 days adding a formic acid, make short distance nitration stably realize.
Embodiment 3,
Utilization adds formic acid and realizes short distance nitration:
1) in stable SBR, a formic acid is added every day according to 0.3mL/L, every minor tick 25h,
Repeating 12 days, form short distance nitration, detection calculates nitrosoation rate [NO2 --N/(NO2 --N+NO3 --N)]
After reaching more than 75%, it was demonstrated that realized short distance nitration；；
2), after preliminarily forming short distance nitration, change into every 3 days adding a formic acid, make short distance nitration stably realize.
According to embodiment 2, the method for embodiment 3, in final outflow water the concentration change trend of three nitrogen with according to reality
Execute the concentration change trend of three nitrogen in the method final outflow water of example 1 consistent.
Claims (9)
1. utilize the method that formic acid realizes short distance nitration, it is characterised in that by stable SBR
In add formic acid, other conditions are constant, stably realize short distance nitration.
The method utilizing formic acid to realize short distance nitration the most according to claim 1, it is characterised in that bag
Include following steps:
1) in stable SBR, every day adds a formic acid, repeats 8-12 days, forms short distance
Nitrification；
2), after preliminarily forming short distance nitration, change into every 3 days adding a formic acid, make short distance nitration stably realize.
The method utilizing formic acid to realize short distance nitration the most according to claim 2, it is characterised in that step
Rapid 1) neutralization procedure 2) in formic acid dosage be 0.2-0.3mL/L.
The method utilizing formic acid to realize short distance nitration the most according to claim 3, it is characterised in that step
Rapid 1) neutralization procedure 2) in formic acid dosage be 0.25mL/L.
The method utilizing formic acid to realize short distance nitration the most according to claim 3, it is characterised in that step
Rapid 1) add formic acid in and repeat 10 days.
6., according to the arbitrary described method utilizing formic acid to realize short distance nitration of claim 2-5, its feature exists
In, step 1) in add the time interval of formic acid for twice be 23-25h.
The method utilizing formic acid to realize short distance nitration the most according to claim 6, it is characterised in that step
Rapid 1) time interval adding formic acid in for twice is 24h.
8., according to the arbitrary described method utilizing formic acid to realize short distance nitration of claim 2-5, its feature exists
In, step 2) in add the time interval of formic acid for twice be 45-50h.
The method utilizing formic acid to realize short distance nitration the most according to claim 8, it is characterised in that step
Rapid 2) time interval adding formic acid in for twice is 48h.
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| CN201610346053.8A CN105923752B (en) | 2016-05-23 | 2016-05-23 | The method for realizing short distance nitration using formic acid |
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| CN201610346053.8A CN105923752B (en) | 2016-05-23 | 2016-05-23 | The method for realizing short distance nitration using formic acid |
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| CN105923752B CN105923752B (en) | 2019-01-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437394A (en) * | 2018-11-19 | 2019-03-08 | 沈阳师范大学 | A method of short distance nitration is controlled using combined depressant |
| CN110921819A (en) * | 2019-12-04 | 2020-03-27 | 沈阳师范大学 | Method for controlling short-cut nitrification and denitrification by using hydrazine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325085A (en) * | 1991-04-26 | 1992-11-13 | Mitsubishi Heavy Ind Ltd | Promoting nitration reaction of nitrite-forming bacteria |
| CN103508546A (en) * | 2013-10-08 | 2014-01-15 | 中国石油天然气集团公司 | Method for implementing rapid start of short-cut nitrification and denitrification to treat wastewater by preposed pre-oxidation |
-
2016
- 2016-05-23 CN CN201610346053.8A patent/CN105923752B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04325085A (en) * | 1991-04-26 | 1992-11-13 | Mitsubishi Heavy Ind Ltd | Promoting nitration reaction of nitrite-forming bacteria |
| CN103508546A (en) * | 2013-10-08 | 2014-01-15 | 中国石油天然气集团公司 | Method for implementing rapid start of short-cut nitrification and denitrification to treat wastewater by preposed pre-oxidation |
Non-Patent Citations (1)
| Title |
|---|
| 解庆林等: "SBR反应器内短程硝化系统快速启动及影响因素研究", 《环境科学与技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437394A (en) * | 2018-11-19 | 2019-03-08 | 沈阳师范大学 | A method of short distance nitration is controlled using combined depressant |
| CN109437394B (en) * | 2018-11-19 | 2021-09-10 | 沈阳师范大学 | Method for controlling short-cut nitrification by using combined inhibitor |
| CN110921819A (en) * | 2019-12-04 | 2020-03-27 | 沈阳师范大学 | Method for controlling short-cut nitrification and denitrification by using hydrazine |
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Granted publication date: 20190125 Termination date: 20210523 |