CN103224285A - Rapid starting method of membrane bioreactor shortcut nitration technology - Google Patents
Rapid starting method of membrane bioreactor shortcut nitration technology Download PDFInfo
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- CN103224285A CN103224285A CN201310084988XA CN201310084988A CN103224285A CN 103224285 A CN103224285 A CN 103224285A CN 201310084988X A CN201310084988X A CN 201310084988XA CN 201310084988 A CN201310084988 A CN 201310084988A CN 103224285 A CN103224285 A CN 103224285A
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Abstract
A rapid starting method of a membrane bioreactor shortcut nitration technology belongs to the municipal sewage processing and recycling fields. The starting method of a shortcut nitration technology in a membrane bioreactor (MBR) comprises the following steps: inoculating returned sludge of a municipal sewage plant, and recovering the activities of sludge under a nutrient-rich condition; gradually increasing the ammonia nitrogen concentration while keeping the water inlet flow unchanged under an oxygen-limited condition to increase the ammonia nitrogen load of inlet water and successfully start shortcut nitration; and adjusting the HRT to 6.2-7.5h under a same running condition to successfully start partial shortcut nitration. The rapid starting method of the shortcut nitration in the MBR provides a way for the long-term efficient and stable running of the shortcut nitration in the MBR.
Description
Technical field
The invention belongs to municipal sewage treatment and resource utilization field.Be specifically related to be exclusively used in the method that normal temperature membrane bioreactor (MBR) short distance nitration starts fast.
Background technology
Along with the growth of economic level and the aggravation of mankind's activity, water pollution is more and more serious, and wherein nitrate pollution is a main harm, and is very big to physical environment and human beings'health influence.Autotrophic denitrification technology is the biological denitrificaion new technology of discovered in recent years, mainly based on the realization of short distance nitration and Anammox, short distance nitration is meant that the activity by suppressing NOB (NOB) rests on the nitrosification stage with nitration reaction, realize inferior nitrogen accumulation, thereby reactions steps and oxygen depletion have been reduced, anaerobic ammonia oxidation process then can be removed ammonia nitrogen and inferior nitrogen simultaneously, and does not consume organic carbon source.Autotrophic denitrification technology combines short distance nitration with anaerobic ammonia oxidation process, possess skills go up, economically, the plurality of advantages on the sustainability, have very high exploitation and be worth, have great importance and wide application prospect for China's water environment pollution improvement and recovery.Because the short distance nitration arts demand provides the water inlet (inferior nitrogen is about 1.31 with the ammonia nitrogen ratio) of suitable proportion for Anammox, therefore, short distance nitration becomes the committed step of novel denitrification process.Yet functional microorganism ammonia oxidizing bacteria (AOB) poor growth in the short distance nitration technology is difficult to enrichment, its less stable simultaneously, thus limited the development of autotrophic denitrification technology.
Membrane bioreactor (MBR) is the novel reactor that rises gradually in recent years, and it is good to have an effluent quality, the sludge concentration height, and it is high to handle load, does not need second pond, saves advantage such as floor space.The MBR reactor is applied to the short distance nitration research of sewage disposal, can solves ammonia oxidizing bacteria (AOB) and be difficult to the technical bottleneck that enrichment and short distance nitration are difficult for long-term stable operation, promote the development of autotrophic denitrification technology.
Therefore, the quick startup strategy of MBR short distance nitration is the gordian technique that MBR is applied to autotrophic denitrification, starts slowly, handles the difficult problem that load is low and be difficult for long-term stable operation with solving short distance nitration.
Summary of the invention
The invention provides a kind of quick startup strategy of normal temperature membrane bioreactor short distance nitration technology.
The quick start method of a kind of membrane bioreactor short distance nitration technology provided by the invention, be at normal temperatures, with artificial distribution is water inlet, with the membrane bioreactor is testing apparatus, the second pond returned sluge of inoculation municipal sewage plant is realized the quick startup of MBR short distance nitration by the operation scheme that increases the influent ammonia nitrogen load gradually in the test.Concrete steps are as follows:
(1) at first seed sludge in the membrane bioreactor reactor: seed sludge is municipal sewage plant A
2/ O second pond returned sluge, seed sludge concentration are 12 ~ 13g/L;
(2) be 20 ~ 25 ℃ in temperature, DO is 0.4 ~ 0.5mg/L, and pH is 7.2 ~ 7.5, and influent ammonia nitrogen is 70 ~ 75mg/L, and ammonia nitrogen loading is 0.22 ~ 0.24 kgm
-3D
-1Condition under recover sludge activity, when ammonia nitrogen removal frank reaches 95% ~ 100%, think that sludge activity is restored;
(3) start short distance nitration by the mode that increases the influent ammonia nitrogen load gradually, method is: adopt manual simulation's water distribution, in temperature is 20 ~ 25 ℃, pH is 7.5 ~ 8.0, DO is under the condition of 0.15 ~ 0.3mg/L, and hydraulic detention time is 6.2 ~ 7.0h, increases the influent ammonia nitrogen load gradually, when increasing the influent ammonia nitrogen load, increase basicity concentration, with CaCO
3The basicity of meter and the mass concentration ratio of ammonia nitrogen are 8 ~ 10, and the influent ammonia nitrogen load reaches 0.7 ~ 0. 8kgm
-3D
-1, when inferior nitrogen accumulation rate has reached more than 99%, and when keeping steady running more than 14 days, think that success has started short distance nitration;
(4) the startup method of part short distance nitration is: adopt manual simulation's water distribution, keeping the influent ammonia nitrogen load is 0.7 ~ 0.8 kgm
-3D
-1Constant, be 20 ~ 25 ℃ in temperature, pH is 7.5 ~ 8.0, and DO is under 0.15 ~ 0.3mg/L condition, and the increase hydraulic detention time is 7.5 ~ 8.0h, when inferior nitrogen accumulation rate maintains 99% ~ 100%, water outlet NO
2 --N/NH
4 +-N reaches 1.1 ~ 1.5, and when keeping steady running more than 30 days, thinks that the part short distance nitration starts successfully.
The present invention in conjunction with the measure of limit oxygen, successfully starts short distance nitration by increasing the method for influent ammonia nitrogen load gradually, and inferior nitrogen accumulation rate finally reaches more than 99%, and has realized the part short distance nitration, water outlet NO by the control hydraulic detention time
2 --N/NH
4 +-N reaches 1.1 ~ 1.5, and the water inlet of suitable proportion can be provided for anaerobic ammonia oxidation reactor.This method is easy to implement, compares the short distance nitration that starts under high temperature or the high pH and more can keep steady running.In addition, the present invention is used in novel reactor MBR reactor in the research of novel denitrification process short distance nitration, membrane bioreactor helps mud and holds back, the microorganism growth that is fit to long sludge age, be expected to solve autotrophy mud poor growth, it is low to handle load, and short distance nitration is difficult to a difficult problem steady in a long-term.
Description of drawings
Fig. 1 is MBR reactor operation logic figure among the present invention, mainly comprises turnover water pump, agitator, aeration tank, online DO, pH Monitoring equipment and built-in membrane module etc.
Fig. 2 is the quick start-up course operating performance of reactor short distance nitration figure among the present invention, ammonia nitrogen removal frank (%)=(influent ammonia nitrogen-water outlet ammonia nitrogen) * 100/ influent ammonia nitrogen wherein, the inferior nitrogen of inferior nitrogen accumulation rate (%)=inferior nitrogen * 100/(+nitre nitrogen), influent ammonia nitrogen load=influent ammonia nitrogen * flooding velocity * 24/(reactor volume * 1000).
Fig. 3 is the operating performance figure nitrosification of reactor part unloading phase the among the present invention, the inferior nitrogen of its Central Asia nitrogen accumulation rate (%)=inferior nitrogen * 100/(+nitre nitrogen), ammonia nitrogen removal frank (%)=(influent ammonia nitrogen-water outlet ammonia nitrogen) * 100/ influent ammonia nitrogen, influent ammonia nitrogen load=influent ammonia nitrogen * flooding velocity * 24/(reactor volume * 1000).
Embodiment
Below in conjunction with embodiment the present invention is further described, but protection scope of the present invention is not limited thereto.
The reactor that is adopted among the present invention is membrane bioreactor (MBR), and the reactor effective volume is 13L, the built-in polyvinylidene difluoride (PVDF) of reactor (PVDF) hollow fiber film assembly.Reactor bottom is installed aerating apparatus, can come DO concentration in the controlling reactor waste water by regulating aeration rate.Built-in agitator guarantees that muddy water mixes, and intake pump connects fluid level controller, keeps liquid level constant, and water outlet is aspirated water outlet by peristaltic pump.Test is a test water with synthetic waste water, and water inlet matrix mainly comprises (the NH of 0.33 ~ 0.94g/L
4)
2SO
4, the NaHCO of 0.94 ~ 3.36g/L
3, the CaCl of 0.068g/L simultaneously in addition
2, 0.15g/L MgSO
4H
2The KH of O, 0.068g/L
2PO
4
Start short range nitrifying method among the present invention fast, its thinking is: in the MBR reactor, inoculation is with A
2The second pond returned sluge of the municipal sewage plant of/O technology operation.Containing a large amount of nitrobacterias in the returned sluge, be inoculated into after the reactor, is matrix with artificial distribution at first, and ammonia nitrogen concentration is close with water factory's concentration in the water distribution, and continuous aeration makes mud recover active.After sludge activity recovers, increase the influent ammonia nitrogen load gradually by the mode that increases influent ammonium concentration gradually, thereby suppress the activity of NOB NOB, because under higher load, the activity of NOB is suppressed, and the activity of AOB is influenced hardly.By increasing the influent ammonia nitrogen load, can realize inhibition, thereby realize inferior nitrogen accumulation NOB, start short distance nitration.
Concrete processing is as follows:
Inoculation is with A
2The second pond returned sluge of certain municipal sewage plant of/O technology operation is in the MBR reactor, and seed sludge concentration MLSS is 12.9g/L, and MLVSS is 10.6g/L, inoculum size 3L, and sludge concentration is MLSS=3.0 ~ 3.5g/L in the inoculation post-reactor.Adopt synthetic waste water, to add an amount of (NH in the tap water
4)
2SO
4, NaHCO
3, CaCl
2, MgSO
4H
2O, KH
2PO
4Configuration forms, and does not contain organic carbon source.In temperature is 20 ~ 25 ℃, and pH is 7.2 ~ 7.5, and DO is 0.4 ~ 0.5mg/L, and hydraulic detention time is under the condition of 6.2 ~ 7.0h, and the control influent ammonia nitrogen is 70 ~ 75 mg/L, and ammonia nitrogen loading is 0.22 ~ 0.24 kgm
-3D
-1, with CaCO
3The basicity of meter and the mass concentration ratio of ammonia nitrogen are 8 ~ 10.Because seed sludge is municipal sewage plant's second pond returned sluge, have ammonia oxidation bacteria (AOB) and NOB (NOB) in the mud simultaneously, at the sludge seeding initial stage, AOB can shake down quickly than NOB, show as the initial accumulated of inferior nitrogen, accumulation rate reaches about 10%.Along with the shortage of effective inhibitor in active recovery of NOB and the reactor, inferior nitrogen accumulation disappears, and ammonia nitrogen all is converted into nitre nitrogen, moves continuously after the week, and ammonia nitrogen removal frank reaches 100%, and this activity that indicates mud is restored, and the adaptive phase finishes.
After sludge activity is restored, start short distance nitration by the mode that increases the influent ammonia nitrogen load gradually.Owing to have AOB and NOB simultaneously in the seed sludge, therefore,, need to suppress the activity of NOB if will realize short distance nitration, by increasing the influent ammonia nitrogen load, can suppress NOB, thereby realize the elutriation of NOB.This is that deactivated NOB will discharge reactor with spoil disposal, and then realize the accumulation of inferior nitrogen because under higher ammonia nitrogen loading, the activity of NOB is suppressed.Adopt manual simulation's water distribution, in temperature is 20 ~ 25 ℃, pH is 7.5 ~ 8.0, DO is under the condition of 0.15 ~ 0.3mg/L, hydraulic detention time is 6.2 ~ 7h, and keeping flooding velocity is that 2.1L/h is constant, increases influent ammonium concentration gradually, be one week of operation under the ammonia nitrogen level of 70 ~ 75mg/L, 95 ~ 105mg/L, 145 ~ 155mg/L, 195 ~ 205mg/L at ammonia nitrogen concentration respectively, corresponding influent ammonia nitrogen load is respectively 0.2 ~ 0.25 kgm
-3D
-1, 0.3 ~ 0.35 kgm
-3D
-1, 0.45 ~ 0.55 kgm
-3D
-1, 0.7 ~ 0. 8 kgm
-3D
-1, when increasing influent ammonium concentration, increase basicity concentration, in the water distribution with CaCO
3The basicity concentration of meter and the ratio of ammonia nitrogen concentration are 8 ~ 10.Reach 0.7 ~ 0.8 kgm at 15d influent ammonia nitrogen load
-3D
-1The time, inferior nitrogen begins accumulation, and the inferior nitrogen accumulation rate of 23d reaches 50%, indicates that short distance nitration begins to start, and inferior nitrogen accumulation rate finally maintains about 99%, and keeps thinking that success has started short distance nitration more than two weeks of steady running.
Because short distance nitration need provide the water inlet of proper ratio for follow-up anaerobic ammonia oxidation reactor, it is about 1.31 that Anammox requires inferior nitrogen of water inlet and ammonia nitrogen ratio, therefore, this is 50% ~ 60% with regard to the oxidation ratio that requires short distance nitration stage control ammonia nitrogen, guarantees water outlet NO
2 --N/NH
4 +-N meets the water inlet requirement of Anammox, promptly realizes the part short distance nitration.After short distance nitration started successfully, keeping DO was that 0.15 ~ 0.3mg/L is constant, and temperature is 20 ~ 25 ℃, and pH is 7.5 ~ 8.0, and keeping the influent ammonia nitrogen load is 0.7 ~ 0.8 kgm
-3D
-1, the increase hydraulic detention time is 7.5 ~ 8.0h, moves 30 days.Along with the increase of hydraulic detention time, ammonia nitrogen removal frank rises gradually, and is stabilized between 53% ~ 60%, and mean value is 56%.Water outlet NO
2 --N/NH
4 +-N is between 1.1 ~ 1.5, and mean value is 1.28, and for follow-up anaerobic ammonia oxidation reactor provides the water inlet of proper ratio, inferior nitrogen accumulation rate maintains 97% ~ 99% simultaneously, and keeps steady running 30 days, thinks that success has started the part short distance nitration, as shown in Figure 3.
Claims (1)
1. the quick start method of a membrane bioreactor short distance nitration technology is characterized in that, comprises the steps:
(1) at first seed sludge in the membrane bioreactor reactor: seed sludge is municipal sewage plant A
2/ O second pond returned sluge, seed sludge concentration are 12 ~ 13g/L;
(2) be 20 ~ 25 ℃ in temperature, DO is 0.4 ~ 0.5mg/L, and pH is 7.2 ~ 7.5, and influent ammonia nitrogen is 70 ~ 75mg/L, and ammonia nitrogen loading is 0.22 ~ 0.24 kgm
-3D
-1Condition under recover sludge activity, when ammonia nitrogen removal frank reaches 95% ~ 100%, think that sludge activity is restored;
(3) start short distance nitration by the mode that increases the influent ammonia nitrogen load gradually, method is: adopt manual simulation's water distribution, in temperature is 20 ~ 25 ℃, pH is 7.5 ~ 8.0, DO is under the condition of 0.15 ~ 0.3mg/L, and hydraulic detention time is 6.2 ~ 7.0h, increases the influent ammonia nitrogen load gradually, when increasing the influent ammonia nitrogen load, increase basicity concentration, with CaCO
3The basicity of meter and the mass concentration ratio of ammonia nitrogen are 8 ~ 10, and the influent ammonia nitrogen load reaches 0.7 ~ 0. 8kgm
-3D
-1, when inferior nitrogen accumulation rate has reached more than 99%, and when keeping steady running more than 14 days, think that success has started short distance nitration;
(4) the startup method of part short distance nitration is: adopt manual simulation's water distribution, keeping the influent ammonia nitrogen load is 0.7 ~ 0.8 kgm
-3D
-1Constant, be 20 ~ 25 ℃ in temperature, pH is 7.5 ~ 8.0, and DO is under 0.15 ~ 0.3mg/L condition, and the increase hydraulic detention time is 7.5 ~ 8.0h, when inferior nitrogen accumulation rate maintains 99% ~ 100%, water outlet NO
2 --N/NH
4 +-N reaches 1.1 ~ 1.5, and when keeping steady running more than 30 days, thinks that the part short distance nitration starts successfully.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496788A (en) * | 2013-09-26 | 2014-01-08 | 浙江工商大学 | Rapid starting method of shortcut nitrification and denitrification in A/O (Anoxic/Oxic) process |
| CN104386812A (en) * | 2014-11-13 | 2015-03-04 | 清华大学 | Composite anaerobic ammonia oxidation reaction process and device based on granule sludge and biological films |
| CN104556356A (en) * | 2014-12-29 | 2015-04-29 | 中南大学 | Method for quickly starting shortcut nitrification reactor |
| CN106904732A (en) * | 2017-03-21 | 2017-06-30 | 苏州科技大学 | A kind of method that membrane bioreactor quickly starts short distance nitration |
| CN107311305A (en) * | 2016-04-26 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of quick start method of Full Autotrophic Ammonium Removal Process |
| CN109455811A (en) * | 2018-12-06 | 2019-03-12 | 天津城建大学 | Catalytic oxidation type MBR device and its part nitrification quick start and operation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018468A (en) * | 2000-07-04 | 2002-01-22 | Hitachi Kiden Kogyo Ltd | Method for removing nitrogen in single tank type membrane separation activated sludge method |
| CN1986447A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN101549903A (en) * | 2009-05-18 | 2009-10-07 | 浙江大学 | Rapid starting method for biological nitration |
| CN102259975A (en) * | 2011-05-27 | 2011-11-30 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Bio-augmentation technique for treating high ammonia nitrogen waste water under low temperature condition |
| CN102311166A (en) * | 2010-07-07 | 2012-01-11 | 中国石油化工股份有限公司 | Method for realizing shortcut nitration of high ammonia nitrogen wastewater |
-
2013
- 2013-03-17 CN CN201310084988.XA patent/CN103224285B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018468A (en) * | 2000-07-04 | 2002-01-22 | Hitachi Kiden Kogyo Ltd | Method for removing nitrogen in single tank type membrane separation activated sludge method |
| CN1986447A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN101549903A (en) * | 2009-05-18 | 2009-10-07 | 浙江大学 | Rapid starting method for biological nitration |
| CN102311166A (en) * | 2010-07-07 | 2012-01-11 | 中国石油化工股份有限公司 | Method for realizing shortcut nitration of high ammonia nitrogen wastewater |
| CN102259975A (en) * | 2011-05-27 | 2011-11-30 | 甘肃金桥给水排水设计与工程(集团)有限公司 | Bio-augmentation technique for treating high ammonia nitrogen waste water under low temperature condition |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496788A (en) * | 2013-09-26 | 2014-01-08 | 浙江工商大学 | Rapid starting method of shortcut nitrification and denitrification in A/O (Anoxic/Oxic) process |
| CN104386812A (en) * | 2014-11-13 | 2015-03-04 | 清华大学 | Composite anaerobic ammonia oxidation reaction process and device based on granule sludge and biological films |
| CN104556356A (en) * | 2014-12-29 | 2015-04-29 | 中南大学 | Method for quickly starting shortcut nitrification reactor |
| CN107311305A (en) * | 2016-04-26 | 2017-11-03 | 中国石油化工股份有限公司 | A kind of quick start method of Full Autotrophic Ammonium Removal Process |
| CN107311305B (en) * | 2016-04-26 | 2020-09-11 | 中国石油化工股份有限公司 | Rapid starting method of completely autotrophic nitrogen removal process |
| CN106904732A (en) * | 2017-03-21 | 2017-06-30 | 苏州科技大学 | A kind of method that membrane bioreactor quickly starts short distance nitration |
| CN109455811A (en) * | 2018-12-06 | 2019-03-12 | 天津城建大学 | Catalytic oxidation type MBR device and its part nitrification quick start and operation method |
| CN109455811B (en) * | 2018-12-06 | 2023-11-17 | 天津城建大学 | Contact oxidation type MBR device and partial nitrification rapid starting and running method thereof |
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