CN1978339A - Method and reactor for quick nitrosation of ammonia nitrogen in low carbon-nitrogenration high ammonianitrogen waste water - Google Patents
Method and reactor for quick nitrosation of ammonia nitrogen in low carbon-nitrogenration high ammonianitrogen waste water Download PDFInfo
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- CN1978339A CN1978339A CNA2005101257964A CN200510125796A CN1978339A CN 1978339 A CN1978339 A CN 1978339A CN A2005101257964 A CNA2005101257964 A CN A2005101257964A CN 200510125796 A CN200510125796 A CN 200510125796A CN 1978339 A CN1978339 A CN 1978339A
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- 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
Abstract
This invention relates to a new method for converting ammonia and nitrogen in waste water of low carbon nitrogen and high ammonia and nitrogen to nitrogen nitrite, which combines two methods of slow DO and quick increasing water concentration. This invention also provides a reactor of quick nitrosation and main biological reaction and mud and water separation process are realized in a same reactor, in which, water flows out continuously and the nitrosation rate can reach over 90% under complete autotrophy.
Description
Affiliated technical field
The present invention relates to a kind of with quick nitrosifying method of ammonia nitrogen and reactor in the high ammonia nitrogen class of the low ratio of carbon to ammonium waste water, be nitrosifying novel method of biological autotrophy and reactor, specifically be with low dissolved axygen (DO) and two kinds of method combinations of raising influent concentration fast, with fast with the nitrosifying method of ammonia nitrogen in the high ammonia nitrogen class of the low ratio of carbon to ammonium waste water, above-mentioned reaction and mud-water separation process are achieved in same reactor, and reactor is realized the Continuous Flow operation.
Background technology
Traditional biological denitrificaion generally comprises ammonia nitrogen is oxidizing to NO
3 -Nitrated and with NO
3 -Be reduced to N
2Two stages of denitrification; But nitrated stage aeration power consumption is high, and consumes basicity; The denitrification stage then needs organic carbon source; To low ratio of carbon to ammonium class waste water such as coking, petrochemical industry, percolate, chemical fertilizer, then need add carbon sources such as methyl alcohol.For solve adding the carbon source problem, developed the nitrite type biological denitrificaion, promptly by control reaction operational conditions, the oxidation of ammonia nitrogen is controlled at the nitrous acid stage, nitrous acid further is converted into nitrogen, i.e. NH more then
4 +→ NO
2 -→ N
2The nitrite type biological denitrificaion has that floor space is little, reduced investment, O
2, power, carbon source and the few advantage of alkali number consumption.But at high ammonia nitrogen low ratio of carbon to ammonium class waste water, nitrosification steady in a long-term is a problem demanding prompt solution always.Adopting low dissolved axygen DO method is to realize one of nitrosifying effective means, improving influent concentration fast is the biological means of domestication fast, therefore will adopt low DO and improve the influent concentration method fast and combine, help nitrosifying quick startup, the reaction tank of reactor design and settling tank are in a reactor, under the Continuous Flow mode is moved simultaneously, realize biological respinse and mud-water separation process simultaneously, have condition and be easy to control, be easy to start the advantage that water outlet is effective.
Summary of the invention
The objective of the invention is: overcome existing low ratio of carbon to ammonium high ammonia-nitrogen wastewater nitrosification long shortcoming start time, low DO of comprehensive utilization and the quick influent concentration that improves are easy to the biological advantage that starts, set up a kind of nitrosification method and reactor of efficient quick, realize easy operation operation scheme.
Method of the present invention is: will hang down DO and combine with rapidity raising influent concentration dual mode, and biological reaction tank and the settling tank mode with operate continuously in a reactor is realized: NH in the former water
4 +The nitrosification rate of-N reaches more than 90%, and water outlet provides good basis for the short distance nitration denitrogenation.
Description of drawings
The essential structure of reactor I of the present invention as shown in drawings.Reactor I takes internal layer reaction tank 2 and outer settling tank 3 concentrically ringed modes to arrange, current adopt the rising streaming.
Reaction tank 2 links to each other by upright leg-of-mutton limbers 5 in the bottom with settling tank 3, and the volume ratio of 2 and 3 parts is 8: 1～10: 1.Reaction tank 2 adopts the CSTR reactor types, stirs with whipping appts 11.Sludge concentration MLSS in the reaction tank maintains 800～4000mg/L.Aeration is carried out with sand core or perforated pipe in the bottom of reaction tank, and aerating apparatus 4 and whipping appts 11 are at a distance of about 1cm.
Contain high NH
4 +The pending water 10 of low ratio of carbon to ammonium enter reaction tank 2 and settling tank 3 by constant flow pump 8 and inlet valve 7 by water-in 6.Water after reaction tank 2 is handled enters settling tank 3 (in the bottom of reactor, reaction tank 2 and settling tank 3 exchange at the muddy water that carries out that does not stop, so water mixes) by limbers 5 in two ponds.Last muddy water mixed solution carries out precipitate and separate in settling tank 3, supernatant liquor overflows reactor by water outlet 1.Lay aerating apparatus 4 usefulness aeration pumps 9 simultaneously in reaction tank 2 bottoms and carry out the DO supply.
Embodiment
Reactor assembly operating process of the present invention is as follows: at first carry out the inoculation and the cultivation of mud, inoculate with sludge from wastewater treatment plant.The amount that begins to adopt conventional aerobic aeration but reduce DO every day is 1mg/L, and reducing DO to the 6th day is 1.5mg/L, and back whole service process is kept lower DO (0.3～2.0mg/L); The concentration that progressively reduces COD when reducing DO (reduces 50mg/L every day, is reduced to 0 during to the 7th day.); And add an amount of NaHCO
3Progressively regulate water inlet pH, at the 7th day and make later on into that water pH maintains 7.8～8.3, water inlet is with NH
4 +-N is main, and adds an amount of phosphorus nutrition element, increases water inlet NH fast
4 +Concentration (per 3 days increase 50mg-N/L), the nitrated rate of industry reaches 95% in the time of about 30 days; Intake by the mode shown in the accompanying drawing 1 during reactor I operation: at first open inlet valve 7, and startup intake pump 8, water in the pump sump 10 is sent into reactor bottom enter reaction tank 2 by limbers 5, reacted mixed solution enters settling tank 3 by the limbers and carries out mud-water separation, and last supernatant liquor is discharged reactor by water outlet 1 overflow.Cultivation and operational process DO are supplied by aerating apparatus 4 usefulness that aeration pump 9 is laid by reactor bottom.
Characteristics of the present invention are:
1. with low dissolved axygen (DO) and two kinds of method combinations of raising influent concentration fast, can realize the nitrosification of high ammonia-nitrogen wastewater fast
2. reaction only needs inorganic carbon source;
3. react and be deposited in the reactor and realize, saved equipment and working cost;
4. nitrosification efficient height, effluent quality is good;
5. water outlet can be directly used in biological autotrophic denitrification or Anammox.
Embodiment:
6. example 1 adopts the synthetic glass cylinder as reactor (volume is 2.2L), reaction tank volume 2.0L, settling tank volume 0.2L, both volume ratios 10: 1.Water inlet NH
4 +The concentration of-N is 30～500mg/L, and adds an amount of phosphorus source, uses NaHCO
3Regulating water inlet pH is 8.0～8.3.Carrying out denitration under the following conditions handles:
The nitrosification section:
DO：0.3～2.0mg/L
pH：8.0～8.3
MLSS：800～2000mg/L
The power residence time (HRT): 12～24h
Maximum NH
4 +-N load: 0.512kgNH
4 +-N/ (m
3D)
Temperature: 20～30 ℃
It is as shown in table 1 to handle back water quality.
Water quality after table 1 embodiment 1 handles
7. example 2 adopts the synthetic glass cylinder as reactor (volume is 20L), reaction tank volume 18L, settling tank volume 2L, both volume ratios 9: 1.Water inlet NH
4 +The concentration of-N is 500～1000mg/L, and adds an amount of phosphorus source, uses NaHCO
3Regulating water inlet pH is 7.8～8.3.Carrying out denitration under the following conditions handles:
The nitrosification section:
DO：0.5～2.0mg/L
pH：7.8～8.3
MLSS：900～2100mg/L
The power residence time (HRT): 16～28h
Maximum NH
4 +-N load: 0.986kgNH
4 +-N/ (m
3D)
Temperature: 20～30 ℃
It is as shown in table 2 to handle back water quality.
Water quality after table 2 embodiment 2 handles
Claims (9)
1, a kind of ammonia nitrogen in the high ammonia nitrogen class of the low ratio of carbon to ammonium waste water is converted into the method for nitrous acid nitrogen fast, it is characterized in that low dissolved axygen (DO) and improve two kinds of method combinations of influent concentration fast.
2, in accordance with the method for claim 1, wherein, low dissolved axygen (DO) concentration realizes by regulating aeration rate.
3, in accordance with the method for claim 1, wherein, improving influent concentration fast is to reach 50% as standard with the nitrosification rate.
4, in accordance with the method for claim 2, wherein, low DO is that to carry out biology under 25～30 ℃, pH7.8～8.3 conditions nitrosifying.
5, in accordance with the method for claim 3, wherein, improving fast is with each raising NH
4 +-N concentration 50mg/L carries out.
6, a kind of reactor that ammonia nitrogen in the high ammonia nitrogen class of the low-carbon and nitrogen waste water is converted into fast nitrous acid nitrogen, it is characterized in that, utilize low DO and the quick influent concentration method that improves to realize, it comprises reaction tank and mud-water separation pond, the two is achieved in same reactor, and realizes the Continuous Flow operation.
7, according to the described reactor of claim 6, it is characterized in that, reaction tank in interior, mud-water separation pond outside, the reaction tank height is higher than the mud-water separation pond.
According to the described reactor of claim 6, it is characterized in that 8, reactor adopts and mixes the continuous-stirring reactor form fully.
According to the described reactor of claim 6, it is characterized in that 9, the mud-water separation pond only is about 0.1 times of reaction tank volume.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101257964A CN1978339A (en) | 2005-12-05 | 2005-12-05 | Method and reactor for quick nitrosation of ammonia nitrogen in low carbon-nitrogenration high ammonianitrogen waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101257964A CN1978339A (en) | 2005-12-05 | 2005-12-05 | Method and reactor for quick nitrosation of ammonia nitrogen in low carbon-nitrogenration high ammonianitrogen waste water |
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| Publication Number | Publication Date |
|---|---|
| CN1978339A true CN1978339A (en) | 2007-06-13 |
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830560A (en) * | 2010-05-14 | 2010-09-15 | 山东大学 | Preparation method of short-cut nitrification and denitrification granular sludge in high Do condition |
| CN101323486B (en) * | 2008-07-25 | 2010-12-01 | 贵州大学 | Method for realizing low carbon-nitrogen rate high concentration nitrogen-containing waste water steady biological hitrosation |
| CN109592785A (en) * | 2018-12-28 | 2019-04-09 | 中国科学院生态环境研究中心 | Anaerobism membrane reactor-partial nitrification-Anammox combination unit and method |
| CN109704456A (en) * | 2019-02-27 | 2019-05-03 | 同济大学 | A kind of method of nitrous oxide gas burst size in reduction Short-Cut Nitrification Process |
-
2005
- 2005-12-05 CN CNA2005101257964A patent/CN1978339A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323486B (en) * | 2008-07-25 | 2010-12-01 | 贵州大学 | Method for realizing low carbon-nitrogen rate high concentration nitrogen-containing waste water steady biological hitrosation |
| CN101830560A (en) * | 2010-05-14 | 2010-09-15 | 山东大学 | Preparation method of short-cut nitrification and denitrification granular sludge in high Do condition |
| CN101830560B (en) * | 2010-05-14 | 2011-11-30 | 山东大学 | Preparation method of short-cut nitrification and denitrification granular sludge in high Do condition |
| CN109592785A (en) * | 2018-12-28 | 2019-04-09 | 中国科学院生态环境研究中心 | Anaerobism membrane reactor-partial nitrification-Anammox combination unit and method |
| CN109592785B (en) * | 2018-12-28 | 2021-04-06 | 中国科学院生态环境研究中心 | Anaerobic membrane reactor-partial nitrosation-anaerobic ammonia oxidation combined device and method |
| CN109704456A (en) * | 2019-02-27 | 2019-05-03 | 同济大学 | A kind of method of nitrous oxide gas burst size in reduction Short-Cut Nitrification Process |
| CN109704456B (en) * | 2019-02-27 | 2021-05-11 | 同济大学 | Method for reducing nitrous oxide gas release amount in nitrosation process |
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Open date: 20070613 |