CN102173505A - Method for realizing short-cut nitrogen removal from municipal domestic sewage - Google Patents
Method for realizing short-cut nitrogen removal from municipal domestic sewage Download PDFInfo
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention relates to a method for removing nitrogen, and in particular relates to a method for realizing short-cut nitrogen removal from municipal domestic sewage. The invention aims to solve the problem that the prior art can not meet the requirements of the short-cut nitrogen removal process for rapid start-up and stable operation. By adopting the method, the short-cut nitrogen removal process can be rapidly and stably started up and stably operated under normal temperature. The method comprises the following operating steps: 1. preparing the activated sludge with AOB (ammonia-oxidizing bacteria) as the dominant population; and 2. realizing short-cut nitrogen removal from municipal domestic sewage by utilizing the sludge prepared in the step 1. The method has the following advantages: 1. the activated sludge with AOB as the dominant population is successfully screened under normal temperature; 2. short-cut nitrogen removal is started up by utilizing the activated sludge with AOB as the dominant population, thus achieving the aims of reducing the energy consumption and saving the investment cost; and 3. the screened activated sludge with AOB as the dominant population can ensure long-term stable operation of short-cut nitrification.
Description
Technical field
The present invention relates to a kind of method of denitrogenation, be specifically related to a kind of method of city domestic sewage short-cut denitrification.
Background technology
At present, along with quickening of urbanization process, sewage disposal requires also constantly to raise thereupon, and each Sewage Plant of China all has been placed on the first place with the denitrogenation dephosphorizing problem.The shortcoming that the theoretical and technology of existing traditional biological denitrogenation exists that initial cost expense height, power consumption are big, the outer adding medicine of needs etc. can not be ignored.Just cause exploration theoretical to novel denitrogenation and technology thus, wherein the most representative and practicality with short-cut denitrification.This technology is controlled nitrifying process and is stopped in one step of nitrite by changing processing condition, and it is about 25% to save oxygen-supplying amount, cuts down the consumption of energy; Save the required carbon source of denitrification simultaneously and reach 40%, under the certain situation of carbon-nitrogen ratio, can improve nitric efficiency.
In nitrifying process, relate to two committed steps, promptly ammonia nitrogen is converted into nitrite nitrogen (NO under ammonia oxidation bacteria (AOB) effect
2 --N), and nitrite nitrogen (NO
2 --N) under nitrous acid oxidation bacterium (NOB) effect, be converted into nitrate nitrogen (NO
3 --N).Short-cut denitrification just is meant that nitrifying process is generating nitrite nitrogen (NO
2 --N) stop once going on foot, directly enter denitrification process subsequently.Therefore, how to control the critical problem that the nitration reaction process just becomes short-cut denitrification.According to the characteristic of the two kinds of important microbe (AOB and NOB) that relate in this process as can be known, can change conditions such as temperature in the reaction process, pH, hydraulic detention time, realize control, and then make AOB become dominant population, finally reach the purpose of short-cut denitrification microorganism active.At present, comparatively sophisticated method is exactly to realize by higher temperature (35 ℃), but it has increased the working cost of technology greatly, runs counter to the original intention of short-cut denitrification save energy.And by controlling the short-cut denitrification technology that methods such as pH, hydraulic detention time start, it is stable that operation is difficult to keep, and should not be applied in the practical problems.Therefore, how can realize that the rapid startup of short-cut denitrification technology under the normal temperature has just become problem demanding prompt solution with steady running.
Summary of the invention
The objective of the invention is for the rapid startup that solves short-cut denitrification technology under the normal temperature and the problem of steady running, and provide a kind of can be under normal temperature condition, the startup of fast and stable, and method that can steady running short-cut denitrification technology.
Principle of the present invention is according to microorganism the degree of utilizing of dissolved oxygen (DO) to be judged the situation of carrying out of two step nitration reactions in the nitrifying process, reach the purpose of the concentration of control dissolved oxygen by the control aeration time, the nitrated process of final control, find the best aeration time that needs to cultivate superior microorganism, and control this aeration time long-time running, final realization is to the screening of superior microorganism in the reactor.
The present invention realizes city domestic sewage short-cut denitrification technology according to the following steps:
One, preparation AOB is the active sludge of dominant population:
(1), determine the aeration phase nitrosation reaction time:
1. seed sludge stage: under normal temperature condition, will take from sewage work's second pond sludge seeding in sequence bioreactor; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, and aeration rate 0.06L/min detects the dissolved oxygen rate of change with dissolved oxygen instrument, to the differentiate of dissolved oxygen rate of change curve, obtains dissolved oxygen rate of change maximum value and is the nitrosation reaction time;
(2), filter out the active sludge of AOB dominant population by the control aeration time:
1. seed sludge stage: under normal temperature condition, the inoculation sewage work second pond mud 1. identical in the sequence bioreactor with step 1 (1); 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is the nitrosation reaction time that step 1 (1) draws, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein the mass ratio of the sodium acetate of Jia Ruing and sewage work's second pond mud is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors; 7. repeating step one (2) 2. to step 1 (2) 6., to NO
2 --N accumulation rate reaches 88% ± 5%, and keep stable till, obtain the active sludge that AOB is a dominant population;
Two, the AOB that utilizes step 1 preparation carries out the city domestic sewage denitrogenation for the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, be that the active sludge of dominant population is inoculated in the sequence bioreactor with AOB; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein sodium acetate of Jia Ruing and AOB are that the mass ratio of the active sludge of dominant population is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors, promptly finish the sanitary sewage short-cut denitrification.
The present invention utilizes the influence of dissolved oxygen to microorganism, and the concentration by period control dissolved oxygen only rests on nitrifying process and utilizes AOB that ammonia nitrogen is converted into NO
2 -NO does not take place in-N process
2 --N is converted into NO
3 -The process of-N is in this state for a long time, successfully screens the active sludge of AOB dominant population; Because aeration time also can influence the biological activity of AOB to a certain extent during long expiration, so step 2 is recovered aeration time 360min, because long-term screening process cause the few even disappearance of NOB, so the ammonia nitrogen of aeration phase mainly is to be converted into NO under the AOB effect
2 --N has only minute quantity NO
2 --N is converted into NO
3 --N is so the denitrification process of agitation phases mainly is NO
2 --N changes N into
2, realize short-cut denitrification; (2) described NO of step 1
2 --N accumulation rate=NO
2 --N concentration/(NO
2 --N concentration+NO
3 --N concentration); To the detection of the supernatant liquor of step 2 post precipitation as can be known this moment COD clearance greater than 85%, ammonia nitrogen removal frank is greater than 97%.
Advantage of the present invention: one, the present invention is under normal temperature condition, filter out the active sludge of AOB dominant population by the control dissolved oxygen, utilize of the influence of the concentration of dissolved oxygen to microorganism, adopt the active sludge treatment sanitary sewage of AOB dominant population, success realizes starting short-cut denitrification, reduces energy consumption, the cost of reducing investment outlay; Two, the active sludge of the AOB dominant population by the present invention screening can guarantee the operation of short-cut denitrification technology long-term stability.
Description of drawings
Fig. 1 is an aeration phase dissolved oxygen rate of change curve; Fig. 2 is the curve that differentiate obtains to aeration phase dissolved oxygen rate of change curve; Fig. 3 is step 1 (2) reactor run duration NO
2 --N accumulation rate change curve; Water outlet NO when Fig. 4 is the end of step 1 (2) aeration
2 --N concentration curve; Water outlet NO when Fig. 5 is the end of step 1 (2) aeration
3 --N concentration curve; Fig. 6 is step 2 reactor run duration NO
2 --N accumulation rate change curve; Water outlet NO when Fig. 7 is the end of step 2 aeration
2 --N concentration curve; Water outlet NO when Fig. 8 is the end of step 2 aeration
3 --N concentration curve.
Embodiment
Embodiment one: the present invention realizes city domestic sewage short-cut denitrification technology according to the following steps:
One, preparation AOB is the active sludge of dominant population:
(1), determine the aeration phase nitrosation reaction time:
1. seed sludge stage: under normal temperature condition, will take from sewage work's second pond sludge seeding in sequence bioreactor; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, and aeration rate 0.06L/min detects the dissolved oxygen rate of change with dissolved oxygen instrument, to the differentiate of dissolved oxygen rate of change curve, obtains dissolved oxygen rate of change maximum value and is the nitrosation reaction time;
(2), cultivating AOB by the control aeration time is the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, the inoculation sewage work second pond mud 1. identical in the sequence bioreactor with step 1 (1); 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is the nitrosation reaction time that step 1 (1) draws, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein the mass ratio of the sodium acetate of Jia Ruing and sewage work's second pond mud is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors; 7. repeating step one (2) 2. to step 1 (2) 6., to NO
2 --N accumulation rate reaches 88% ± 5%, and keep stable till, obtain the active sludge that AOB is a dominant population;
Two, the AOB that utilizes step 1 preparation carries out the city domestic sewage denitrogenation for the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, be that the active sludge of dominant population is inoculated in the sequence bioreactor with AOB; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein sodium acetate of Jia Ruing and AOB are that the mass ratio of the active sludge of dominant population is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors, promptly finish the sanitary sewage short-cut denitrification.
Embodiment two: the difference of present embodiment and embodiment one is: the mass ratio of the 4. middle sodium acetate of step 1 (2) and sewage work's second pond mud is 1.2: 10.
Embodiment three: the difference of present embodiment and embodiment one is: the mixed solution sludge concentration in the 2. middle sequence bioreactor of step 1 (1) is 2500mg/L ± 50mg/L.
Embodiment four: the difference of present embodiment and embodiment one is: the mixed solution sludge concentration in the 2. middle sequence bioreactor of step 1 (2) is 2500mg/L ± 50mg/L.
Embodiment five: the difference of present embodiment and embodiment one is: 4. middle sodium acetate of step 2 and AOB are that the mass ratio of the active sludge of dominant population is 1.2: 10.
Embodiment six: the difference of present embodiment and embodiment one is: the mixed solution sludge concentration in the 2. middle sequence bioreactor of step 2 is 2500mg/L ± 50mg/L.
Embodiment seven: the difference of present embodiment and embodiment one is: the effective volume of the sequence bioreactor described in the step 1 and two is 5L.
Embodiment eight: concrete operations are as follows
One, preparation AOB is the active sludge of dominant population:
(1), determine the aeration phase nitrosation reaction time:
1. seed sludge stage: under normal temperature condition, will take from sewage work's second pond sludge seeding in sequence bioreactor; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2500mg/L ± 50mg/L; 3. aeration phase: aeration time is 360min, and aeration rate 0.06L/min detects the dissolved oxygen rate of change with dissolved oxygen instrument, to the differentiate of dissolved oxygen rate of change curve, obtains dissolved oxygen rate of change maximum value and is the nitrosation reaction time; The effective volume of described sequence bioreactor is 5L;
(2), cultivating AOB by the control aeration time is the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, the inoculation sewage work second pond mud 1. identical in the sequence bioreactor with step 1 (1); 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2500mg/L ± 50mg/L; 3. aeration phase: aeration time is 225min, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein the mass ratio of the sodium acetate of Jia Ruing and sewage work's second pond mud is 1.2: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors; 7. repeating step one (2) 2. to step 1 (2) 6., to NO
2 --N accumulation rate reaches 88% ± 5%, and keep stable till, obtain the active sludge that AOB is a dominant population; The effective volume of described sequence bioreactor is 5L;
Two, the AOB that utilizes step 1 preparation carries out the city domestic sewage denitrogenation for the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, be that the active sludge of dominant population is inoculated in the sequence bioreactor with AOB; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2500mg/L ± 50mg/L; 3. aeration phase: aeration time is 360min, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein sodium acetate of Jia Ruing and AOB are that the mass ratio of the active sludge of dominant population is 1.2: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors, promptly finish the sanitary sewage short-cut denitrification; The effective volume of described sequence bioreactor is 5L.
Utilize dissolved oxygen concentration variation in the dissolved oxygen instrument monitoring aeration phase sequence bioreactor in (1) of step 1, its detected result as shown in Figure 1, in order to find screening AOB is the best aeration time of the active sludge of dominant population, differentiate obtains Fig. 2 to Fig. 1 dissolved oxygen change curve, is 225min when obtaining the velocity of variation maximum value according to Fig. 2.
The screening AOB that is provided according to (1) of step 1 is the best aeration time 225min of dominant population active sludge, carries out (2) of step 1, moves the 14th day, according to the NO among Fig. 3
2 -Shown in-N accumulation rate the curve, NO
2 --N accumulation rate reaches more than 88%, but can not determine NO
2 -Can-N accumulation rate be kept stable, and from Fig. 4 water outlet NO
2 --N concentration curve can be learnt the NO of water outlet
2 --N content is very low; Move the 21st day, according to the NO among Fig. 3
2 -Shown in-N accumulation rate the curve, at 14～21 days NO
2 --N accumulation rate remains on 88% ± 5%, keep stable, by NO among Fig. 4
2 -NO among-N water outlet concentration curve and Fig. 5
3 --N water outlet concentration curve, NO as can be known
2 --N goes out water concentration much larger than NO
3 --N goes out water concentration and NO
2 -The trend that goes out water concentration maintenance rising of-N, so far the active sludge of AOB dominant population screens successfully.
Step 2 be adopt the step 1 screening to AOB be the active sludge of dominant population because aeration also can influence the biological activity of AOB to a certain extent during long expiration, therefore reply aeration time 360min, by the NO among Fig. 6
2 -Shown in-N accumulation rate the curve, NO after recovering aeration time
2 --N accumulation rate still maintains higher level, from moving the 16th～40 day accumulation rate change curve NO as can be known
2 --N accumulation rate remains on 91% ± 2%; NO from Fig. 7
2 --N water outlet concentration curve can be learnt, NO behind the recovery aeration time
2 --N goes out water concentration and rises gradually, NO in the water outlet when moving the 15th day
2 --N concentration content reaches and is up to 39.6mg/L, from moving the 16th～40 day NO
2 --N water outlet concentration curve is NO as can be known
2 --N goes out water concentration and remains on 16mg/L ± 1mg/L; NO from Fig. 8
3 --N water outlet concentration curve recovers NO behind the aeration time as can be known
3 -It is in rising trend that-N goes out water concentration, NO in the water outlet when moving the 18th day
3 --N concentration content reaches and is up to 1.3mg/L, but NO
3 --N goes out water concentration much smaller than NO
2 --N goes out water concentration; According to Fig. 7 and Fig. 8 as can be known, the ammonia nitrogen of aeration phase mainly is to be converted into NO under the AOB effect
2 --N has only minute quantity NO
2 --N is converted into NO
3 --N is so the denitrification process of agitation phases mainly is NO
2 --N changes N into
2, from moving the 16th day NO
2 --N accumulation rate keeps stable and NO
2 --N goes out water concentration and keeps stable, and NO
2 --N goes out water concentration much larger than NO
3 --N goes out water concentration, so after moving the 18th day, short-cut denitrification technology can be kept steady running, short-cut denitrification technology promptly of the present invention can realize long term maintenance steady running; By to move the 18th day post precipitation supernatant liquor detection as can be known this moment COD clearance greater than 85%, ammonia nitrogen removal frank is greater than 97%.
Claims (6)
1. method that realizes the city domestic sewage short-cut denitrification is characterized in that the method that realizes the city domestic sewage short-cut denitrification finishes according to the following steps:
One, preparation AOB is the active sludge of dominant population:
(1), determine the aeration phase nitrosation reaction time:
1. seed sludge stage: under normal temperature condition, will take from sewage work's second pond sludge seeding in sequence bioreactor; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, and aeration rate 0.06L/min detects the dissolved oxygen rate of change with dissolved oxygen instrument, to the differentiate of dissolved oxygen rate of change curve, obtains dissolved oxygen rate of change maximum value and is the nitrosation reaction time;
(2), filter out the active sludge of AOB dominant population by the control aeration time:
1. seed sludge stage: under normal temperature condition, the inoculation sewage work second pond mud 1. identical in the sequence bioreactor with step 1 (1); 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is the nitrosation reaction time that step 1 (1) draws, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein the mass ratio of the sodium acetate of Jia Ruing and sewage work's second pond mud is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors; 7. repeating step one (2) 2. to step 1 (2) 6., to NO
2 --N accumulation rate reaches 88% ± 5%, and keep stable till, obtain the active sludge that AOB is a dominant population;
Two, the AOB that utilizes step 1 preparation carries out the city domestic sewage denitrogenation for the active sludge of dominant population:
1. seed sludge stage: under normal temperature condition, be that the active sludge of dominant population is inoculated in the sequence bioreactor with AOB; 2. fill phase: sanitary sewage is filled with sequence bioreactor, and the mixed solution sludge concentration in the sequence bioreactor is 2000～3000mg/L; 3. aeration phase: aeration time is 360min, aeration rate 0.06L/min; 4. agitation phases: add sodium acetate in sequence bioreactor, and begin to stir, stirring total time is 120min, and wherein sodium acetate of Jia Ruing and AOB are that the mass ratio of the active sludge of dominant population is 0.8～1.6: 10; 5. precipitate phase: precipitation 60min, the sanitary sewage after handling separates with mud; 6. bleeding stage: start wet-pit the supernatant liquor of post precipitation is all discharged batch formula bio-reactors, promptly finish the sanitary sewage short-cut denitrification.
2. a kind of method that realizes the city domestic sewage short-cut denitrification according to claim 1 is characterized in that the mass ratio of the 4. middle sodium acetate of step 1 (2) and sewage work's second pond mud is 1.2: 10.
3. a kind of method that realizes the city domestic sewage short-cut denitrification according to claim 1 is characterized in that sodium acetate and AOB during step 2 4. are that the mass ratio of the active sludge of dominant population is 1.2: 10.
4. a kind of method that realizes the city domestic sewage short-cut denitrification according to claim 1 is characterized in that the mixed solution sludge concentration in the sequence bioreactor was 2500mg/L ± 50mg/L during step 1 (1) 2..
5. a kind of method that realizes the city domestic sewage short-cut denitrification according to claim 1 is characterized in that the mixed solution sludge concentration in the sequence bioreactor was 2500mg/L ± 50mg/L during step 1 (2) 2..
6. a kind of method that realizes the city domestic sewage short-cut denitrification according to claim 1 is characterized in that the mixed solution sludge concentration in the sequence bioreactor was 2500mg/L ± 50mg/L during step 2 2..
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583883A (en) * | 2012-02-16 | 2012-07-18 | 北京工业大学 | Technology and method for treating urban sewage by sectional parallel anaerobic ammonia oxidation |
| CN104129853A (en) * | 2014-07-04 | 2014-11-05 | 广州市市政工程设计研究院 | Starting method for rapid and efficient short-cut nitrification |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759290A (en) * | 2010-02-10 | 2010-06-30 | 彭永臻 | Device and method for rapidly realizing and stably maintaining shortcut nitrification in continuous flow process |
| CN101948176A (en) * | 2010-09-29 | 2011-01-19 | 重庆大学 | Method for realizing short-cut nitrification and denitrification through online monitoring and controlling SBR (Selective Beacon Radar) aeration duration on basis of HPR (High Performance Routing) |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759290A (en) * | 2010-02-10 | 2010-06-30 | 彭永臻 | Device and method for rapidly realizing and stably maintaining shortcut nitrification in continuous flow process |
| CN101948176A (en) * | 2010-09-29 | 2011-01-19 | 重庆大学 | Method for realizing short-cut nitrification and denitrification through online monitoring and controlling SBR (Selective Beacon Radar) aeration duration on basis of HPR (High Performance Routing) |
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| 《Water Science and Technology》 20041231 Y.Z. Peng等 Nitrite accumulation by aeration controlled in sequencing batch reactors treating domestic wastewater 第50卷, 第10期 * |
| 《清华大学学报（自然科学版）》 20091231 郭建华等 好氧曝气时间实时控制实现短程硝化 第1998页2.1第2段 1-6 第49卷, 第12期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583883A (en) * | 2012-02-16 | 2012-07-18 | 北京工业大学 | Technology and method for treating urban sewage by sectional parallel anaerobic ammonia oxidation |
| CN104129853A (en) * | 2014-07-04 | 2014-11-05 | 广州市市政工程设计研究院 | Starting method for rapid and efficient short-cut nitrification |
| CN104129853B (en) * | 2014-07-04 | 2016-04-27 | 广州市市政工程设计研究总院 | A kind of starting method of quick short distance nitration |
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