CN101264978A - Method for fast realizing short distance deep denitrogenation by SBR process - Google Patents
Method for fast realizing short distance deep denitrogenation by SBR process Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 71
- 230000008569 process Effects 0.000 title claims abstract description 42
- 238000005273 aeration Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 238000006396 nitration reaction Methods 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 31
- 230000003647 oxidation Effects 0.000 description 21
- 238000007254 oxidation reaction Methods 0.000 description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 241001453382 Nitrosomonadales Species 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
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- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- -1 nitrogenous compound Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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
The invention relates to a rapid nitrogenous wastewater biological treatment process, particularly to a method for rapidly realizing short distance deep denitrogenation by SBR process. The prior short distance biological denitrogenation technique is not suitable for treating wastewater with low C/N ratio. The inventive method comprises the steps of feeding water, aerating, adding equal amount of raw wastewater, aerating, adding equal amount of raw wastewater, aerating, adding external carbon source, aerating, settling, draining, and idle running. The temperature in the overall process is controlled at 30-33 DEG C, the water dissolved oxygen concentration during nitration stage is controlled in the range of 0.8-1.2 mg/L, the mean sludge retention time in the system is 12-15 days, and the aeration amount and the denitrification time of the short distance deep denitrogenation by SBR process is controlled based on the change feature of online parameter pH value. The inventive method has the advantages of good denitrogenation effect, high degree of automation, low energy consumption, convenient operation, low cost, and suitability for treatment of wastewater with low C/N ratio.
Description
Technical field
The present invention relates to a kind of Fast implementation of nitrogenous effluent biological treatment, especially short-cut nitrification and denitrification and the process implementation method of the SBR method deep denitrogenation process of control in real time be can carry out, nitrogenous Industrial Wastewater Treatment and town sewage advanced treatment are applicable to.
Background technology
Along with the develop rapidly of industrial or agricultural, human specification of quality to environment improves gradually, and the eutrophication phenomenon of water surrounding causes people's great attention gradually.The biological nitration denitrification is the sewage denitrification method that generally adopts at present.The tradition nitrification is carried out in two steps.At first, ammonia oxidation bacteria (AOB) is converted into nitrite with ammonia nitrogen; Then, by nitrous acid oxidation bacterium (NOB) nitrite is converted into nitrate.Denitrification is in anoxic and exists under the condition of organic carbon source, is nitrogen by denitrifying bacteria with nitrite and nitrate reduction.But when C/N ratio wastewater (as some municipal effluent based on resident living sewage) was hanged down in processing, owing to reasons such as carbon source deficiency or fluctuating temperatures, nitric efficiency was lower.
The short range biological denitrification technology is that biological nitrification process is controlled at the ammonia oxidation stage, then directly carries out denitrification, has not only saved NO
2 -The required energy of the further aeration oxidation of-N, and saved denitrification NO
3 -The carbon source that-N process is required.Realize that short-cut nitrification and denitrification has great importance for improving nitric efficiency, the saving energy and carbon source, but the application of this technology at present focuses mostly in the handling problem of high ammonia-nitrogen wastewater, for sanitary sewage or the municipal effluent process of handling low C/N ratio, the method for effective realization short distance deep denitrogenation is not arranged as yet.
SBR technology is the abbreviation of intermittent activated sludge process sewage treatment process, and its treatment unit has only a sbr reactor pond, and steps such as water inlet, reaction, precipitation, draining are all carried out in this reaction tank, are a kind of sewage disposal process by activated sludge process of routine.SBR technology has advantages such as operation scheme is flexible, controllability is good, therefore is the optimised process of research short distance deep denitrogenation implementation method and stability problem.
Summary of the invention
The method that the purpose of this invention is to provide a kind of quick realization SBR method short distance deep denitrogenation, by applying the various regulate and control methods that help realizing SBR method short range biological denitrification, provide optimum environment controlled variable, and, reach the effect of quick realization short distance deep denitrogenation in conjunction with real-time control techniques.
The present invention adopts the operation scheme of three sections water inlets of branch, and with each cycle of pending sewage equivalent adding in three batches reactor, in entire reaction course, temperature remains in the 30-33 ℃ of scope in the Controlling System all the time, and concrete steps are as follows:
The I water inlet adds the sbr reactor device with first sewage, starts agitator in the time of water inlet and stirs, and system enters anaerobic state in this process, but the partial organic substances in the active sludge rapid absorption sewage is stored in the cell;
Open gas blower behind the II aeration water inlet end system is carried out aeration, by regulating in the air demand control sewage dissolved oxygen concentration in the 0.8-1.2mg/l scope, organism in the aerobic removal water, afterwards under the effect of ammonia oxidizing bacteria with water in the ammonia nitrogen oxidation, the bubble that produces in the aeration process makes sewage fully contact with active sludge, played the effect that mixes, gather pH value current signal through transmitter input analog(ue)digital transformer A/D, convert numerary signal to, and in real time the data information transfer that is obtained is carried out filtering and differentiate processing to computer by data collecting card again, when the first order derivative of pH value is just being become by negative, and aeration time t＞2h stops aeration;
Oxidative ammonolysis is a reaction of producing acid, and the pH value can descend always in reaction process, produces acid and stop when reaction finishes, because CO
2By a large amount of strippings, the pH value can become rising by decline, according to above feature, stops aeration.
III adds raw waste water and adds second batch of raw waste water and start agitator simultaneously, for providing anaerobic environment and organic carbon source, the denitrifying bacteria in the system carries out anti-nitration reaction, the denitrification process is monitored by pH value on-line sensor, and in real time the data information transfer that obtained is carried out filtering and differentiate is handled to computer by data collecting card, when pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
The denitrification process nitrite nitrogen constantly is reduced to nitrogen, owing to constantly produce basicity, the pH value can continue to rise, when denitrification finishes, owing to enter the anaerobic fermentation acid phase, so the pH value can become decline by rising, according to above unique point, stop to stir.
The IV aeration is opened gas blower and system is carried out aeration second time, repeating step 2) in aeration process, with the ammonia nitrogen oxidation in the water inlet for the second time, still control by the unique point of the change rising that descends according to pH value;
V adds raw waste water and adds the 3rd batch of sewage, and reactor oepration at full load this moment repeats the denitrification process among the operation III, and according to pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
The VI aeration repeats the aeration process among the operation IV, and is just being become by negative according to the first order derivative of pH value, and aeration time t＞2h, stops aeration;
VII adds additional carbon and adds small amount of ethanol as additional carbon, carries out anti-nitration reaction and turn on agitator, and according to pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
After VIII precipitation and draining reaction are all over, precipitate draining according to the time of setting;
IX leaves unused and emits mud in the idle stage according to the time startup sludge pump of setting, and the mud mean residence time that keeps system was at 12-15 days.
Segmental influent SBR technological process control method based on the pH unique point involved in the present invention is with reference to existing Chinese patent ZL 200610012076.1.
The realization condition of short range biological denitrification technology is the optimization of nitrifying bacteria community (mainly comprising ammonia oxidizing bacteria and nitrite-oxidizing bacteria two big bacterioids) structure in itself, promptly eliminates the nitrite-oxidizing bacteria in the system as far as possible, keeps ammonia oxidizing bacteria.
The method of quick realization SBR method short distance deep denitrogenation provided by the present invention is with raising ammonia oxidation bacteria growth velocity, reduce nitrous acid oxidizing bacteria growth speed, the combined factors of promptly help most the enriching ammonia oxidation bacterium, eliminating nitrite-oxidizing bacteria specifically comprises together:
1) the real-time control based on on-line parameter pH value variation characteristic point is that short distance deep denitrogenation is achieved and stable principal element, because nitrous acid oxidation bacterium must can grow after ammonia oxidizing bacteria produces nitrite, therefore, if ammonia nitrogen when just oxidation is finished or before stop aeration, nitrite will be accumulated to some extent, use real-time control strategy, both can guarantee that ammonia nitrogen is by complete oxidation, having prevented the further oxidation of nitrite again, is the prerequisite that short distance nitration is realized.
2) by spoil disposal, Controlling System mud mean residence time 12-15 days was the committed steps that realize short distance deep denitrogenation.The sludge age (being the time that ammonia oxidizing bacteria doubles) of ammonia oxidizing bacteria is generally at 10-12 days under the condition of the present invention's control, the sludge age of nitrous acid oxidation bacterium (being the time that nitrite-oxidizing bacteria doubles) is then generally at 18-20 days, Controlling System mud mean residence time can make the nitrite-oxidizing bacteria sufficient propagation that also is not able to do in time just be exhausted from system in 12-15 days, thereby guaranteed that the ratio of ammonia oxidizing bacteria in whole nitrifying bacteria community improves constantly, and eliminated nitrite-oxidizing bacteria.
3) system's operating temperature of 30-33 ℃ helps the enriching ammonia oxidation bacterium.Under temperature condition more than 30 ℃, the growth velocity of ammonia oxidizing bacteria is moved under this condition for a long time greater than the growth velocity of nitrite-oxidizing bacteria, helps the enriching ammonia oxidation bacterium.
4) control dissolved oxygen (1.0mg/L) on the low side helps the enriching ammonia oxidation bacterium.Physiological property according to two quasi-microorganisms, at aerobic stage, (under the condition of DO＜1mg/L), the growth velocity of ammonia oxidizing bacteria is greater than the growth velocity of nitrite-oxidizing bacteria, because ammonia oxidizing bacteria is stronger than nitrite-oxidizing bacteria to the avidity of dissolved oxygen for lower dissolved oxygen concentration.Under this condition, move for a long time, help the enriching ammonia oxidation bacterium.In addition under the low dissolved axygen condition, because the synchronous nitration and denitrification effect easily takes place in local anoxic, the anaerobic state of fill phase for the first time, mud rapid absorption organism is stored in the cell can further provide carbon source for synchronous nitration and denitrification, the result of this effect is the nitrite nitrogen that produces in the minimizing system, be the substrate of nitrous acid oxidation bacterium, can play the effect that reduces the meeting of nitrite-oxidizing bacteria growth machine.
5) alternately aerobic/anoxic condition helps improving the competitive power of ammonia oxidizing bacteria.Physiological property according to two quasi-microorganisms, aerobic stage ammonia oxidizing bacteria after each anoxic stage always recovers active in advance than nitrite-oxidizing bacteria, the growth velocity of ammonia oxidizing bacteria just is higher than the growth velocity of nitrous acid oxidation bacterium in the aerobic initial stage like this, has reduced the growth machine meeting of nitrite-oxidizing bacteria.
6) operational mode of segmental influent can in time be carried out denitrification process fully, and with the nitrite nitrogen that produces in the system, i.e. the substrate of nitrous acid oxidation bacterium is in time removed from system, has also played the effect of the growth machine meeting that has reduced nitrite-oxidizing bacteria.
The present invention has following beneficial effect fruit:
1) denitrification effect is good, the water outlet ammonia nitrogen less than 1mg/L, total nitrogen less than 5mg/L, in the pollution exhaust criteria of country's promulgation in 2002, to the strict emission control standards of town sewage be the water outlet ammonia nitrogen less than 5mg/L, total nitrogen less than 15mg/L, water outlet ammonia nitrogen of the present invention and total nitrogen are far below the pollution exhaust criteria of country's promulgation.
2) energy conservation and consumption reduction effects is good, and short-cut nitrification and denitrification technology itself has just been saved 25% aeration energy consumption and 40% additional carbon expense, and the operational mode of segmental influent made full use of the organic carbon source in the raw waste water again, makes outer expense of throwing carbon source drop to minimum.Because the organism in the sewage is used as denitrifying carbon source, saved the needed oxygen of this partial organic substances of oxidation, the energy consumption of further having saved gas blower simultaneously.
3) automatization level height, real-time control strategy based on common transmitter, aerobic aeration and anoxia stirring time in the biological denitrification process be can control flexibly, the not enough caused reaction of aeration or churning time incomplete and aeration or the raising of the long running cost of bringing of churning time and the waste of the energy fundamentally solved.
What 4) agent set adopted is SBR technology, makes organism and nitrogenous compound obtain removing in a reaction tank, has reduced anoxic pond and settling tank etc. and has handled structures, thereby reduced the floor space of initial cost and whole technology.
5) whole technology is finished by the process real-time control system, has bookkeeping conveniently, and expense is low, anti impulsion load is strong and difficult generation sludge bulking.
6) samll cities and towns' municipal effluent or organism, nitrogen content changed the processing of trade effluent greatly during the present invention can be widely used in, and were specially adapted to adopt the sewage work of SBR technology or the sewage work of preparing to adopt SBR technology.
Description of drawings
Realize the operation result of SBR method short distance deep denitrogenation method among Fig. 1, the embodiment fast
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
Embodiment
With the real life sewage of certain university dependents' district discharging as experimental subjects (pH=6.5-7.8, COD=260-350mg/L, TN=75-80mg/L).Selected sbr reactor device useful volume 15L divides three water inlets, and each water inlet is about 4L, and the COD concentration of mixed solution maintains 200-300mg/L, NH in the reactor
4 +-N concentration is at 55-60mg/L, and sludge concentration initial in the reactor is at 3.5-4.0g.L
-1, the mud mean residence time maintained about 12-15 days, by the temperature control unit control reaction temperature in 30-33 ℃ of scope.Additional carbon employing concentration is 95% ethanol.Concrete steps are as follows:
The sbr reactor device of useful volume 15L is used in the I water inlet, at first open inlet valve, start intake pump pending waste water is injected the sbr reactor device, start agitator, setting flooding time by the process real-time control system is 20 minutes, and the flow of intake pump is 0.2L/min, the 4L of intaking approximately after 10 minutes of intaking, close intake pump, agitator and inlet valve, enter the II procedure;
The II aeration is opened air intake valve, starts gas blower, and initial aeration rate is set at 0.6m
3/ h, reactive system is carried out aeration, the pressurized air that is provided by gas blower enters aerator by inlet pipe, with the form of micro-bubble to the efficient oxygen supply of active sludge intermixture, and sewage is fully contacted with active sludge, regulate air demand by the dissolved oxygen sensor of being settled in the observing response pond, when the dissolved oxygen concentration in the mixed solution during greater than 1mg/L, just turn down air door, reduce aeration rate,, just open big air door when the dissolved oxygen concentration in the mixed solution during less than 1mg/L, increase aeration rate, guarantee that intrasystem dissolved oxygen concentration maintains 1.0mg/L;
Whole process is implemented control by the process real-time control system, mainly obtain the information of reaction process indirectly according to the unique point of settling the pH transmitter in reaction process, to be shown in the reaction tank, the scope of pH is 0～14, respectively corresponding 4～20mA current signal, the pH value current signal of gathering is imported analog(ue)digital transformer A/D through transmitter, convert numerary signal to, and in real time the data information transfer that is obtained is carried out filtering and differentiate processing to computer by data collecting card again, when the first order derivative of pH value is just being become by negative, and aeration time t＞2h, promptly obtained characterizing the nitrated signal of finishing, close gas blower and intake valve, stop aeration, enter subsequent processing.
III adds under the adjusting that raw waste water is stirred in the process real-time control system and opens intake pump and inlet valve, add former water and turn on agitator, setting for the second time, flooding time is 20 minutes, the amount of secondary adding sewage is about 4L, after reaching 20 minutes, flooding time closes inlet valve and intake pump, system enters the anoxic denitrification denitrification process in whipping process, the denitrification process is monitored by pH value on-line sensor, and in real time the data information transfer that is obtained is handled to computer by data collecting card, finally reach control to churning time, when pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
The IV system returns the II procedure, repeats aeration process, and is just being become by negative according to the first order derivative of pH value, and aeration time t＞2h, stops aeration;
V repeats to add raw waste water and carries out the denitrification among operation III and the IV and the process of aeration;
It is 0.5ml that VI adds outer carbon source denitrification setting alcoholic acid throwing amount, valve and ethanol that the unlatching carbon source adds on the pipe add pump, closing carbon source behind the ethanol 0.5ml that adds adds pump and carbon source and adds valve on the pipe, turn on agitator when adding carbon source, the denitrification process is by the monitoring of pH on-line sensor, and III is identical with operation, after denitrification finishes, close agitator, enter the VII procedure;
The VII precipitation is 1 hour by the time controller in the process real-time control system according to predefined sedimentation time, and inlet valve, air intake valve, water discharging valve and spoil disposal valve are all closed at this moment;
The VIII draining is strained hydrophone and is started working under the process real-time control system is regulated, and will handle back water outside rising pipe is discharged to reactor, and draining is closed the valve on the rising pipe after finishing;
IX is idle as required, setting idle mixing time is 2 hours, the spoil disposal time is 5 minutes, under the process real-time control system is regulated, open sludge pump,, close sludge pump when reaching predefined spoil disposal after the time, after reaching predefined 2 hours idle mixing time, system is out of service or carry out the operation of next cycle.
After utilizing the method that realizes SBR method short distance deep denitrogenation fast, as shown in Figure 1, the result of operation shows that total nitrogen is less than 5mg/L, far below the desired total nitrogen concentration of national grade one discharge standard in system's final outflow water.The nitrosification rate of simultaneity factor (
) but the long period remains on more than 95%, reached good short distance deep denitrogenation effect.
Claims (1)
1, a kind of method of quick realization SBR method short distance deep denitrogenation is characterized in that, may further comprise the steps:
The I water inlet adds the sbr reactor device with sewage, starts agitator in the time of water inlet and stirs;
Open gas blower behind the II aeration water inlet end system is carried out aeration, by regulating in the air demand control sewage dissolved oxygen concentration in the 0.8-1.2mg/l scope, gather pH value current signal through transmitter input analog(ue)digital transformer A/D, convert numerary signal to, and in real time the digital data transmission that obtained is carried out filtering and differentiate is handled to computer by data collecting card, when the first order derivative of pH value is just being become by negative, and aeration time t＞2h, aeration stopped;
III adds raw waste water and adds the equivalent raw waste water and start agitator simultaneously, the denitrification process is monitored by pH value on-line sensor, and in real time the data information transfer that obtained is carried out filtering and differentiate is handled to computer by data collecting card, when pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
The IV aeration is opened gas blower system is carried out aeration, by regulating in the air demand control sewage dissolved oxygen concentration in the 0.8-1.2mg/l scope, gather pH value current signal through transmitter input analog(ue)digital transformer A/D, convert numerary signal to, and in real time the digital data transmission that obtained is carried out filtering and differentiate is handled to computer by data collecting card, when the first order derivative of pH value is just being become by negative, and aeration time t＞2h, aeration stopped;
After V adds raw waste water and adds the 3rd batch of equivalent raw waste water, repeat the denitrification process among the operation III, and according to pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
The VI aeration repeats the aeration process among the operation IV, and is just being become by negative according to the first order derivative of pH value, and aeration time t＞2h, stops aeration;
VII adds additional carbon and adds additional carbon and carry out anti-nitration reaction and turn on agitator, the denitrification process is monitored by pH value on-line sensor, and in real time the data information transfer that obtained is carried out filtering and differentiate is handled to computer by data collecting card, when pH value first order derivative by just becoming negative, and churning time t＞0.5h closes agitator;
VIII precipitation and draining precipitate draining according to the time of setting;
IX is idle to emit mud according to the time startup sludge pump of setting, and the mud mean residence time that keeps system was at 12-15 days;
Temperature of reaction remains in the 30-33 ℃ of scope among the operation I to IX.
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| CN102079609A (en) * | 2010-12-03 | 2011-06-01 | 北京工业大学 | Quick start method for short-range deep denitrification by SBR (Sequencing Batch Reactor) process at low temperature |
| CN102531175A (en) * | 2012-03-08 | 2012-07-04 | 北京工业大学 | Phenol inhibition-coupled low temperature short-cut denitrification method |
| CN102826719A (en) * | 2012-09-14 | 2012-12-19 | 广州环保投资有限公司 | Method for biological nitrogen removal by adopting short-cut nitrification and denitrification |
| CN103011507A (en) * | 2012-12-12 | 2013-04-03 | 北京工业大学 | Control method and device for deep denitrification treatment of garbage leachate by combination of short-range nitrification and anaerobic ammoxidation |
| CN103112949A (en) * | 2013-02-03 | 2013-05-22 | 北京工业大学 | SBR (sequencing batch reactor) semi-short-distance nitrification process control method |
| CN107032498A (en) * | 2017-06-23 | 2017-08-11 | 长春工程学院 | The method that batch enters enhanced water SBR technique deep denitrifications |
| CN107032497A (en) * | 2017-06-23 | 2017-08-11 | 长春工程学院 | Stop the SBR advanced nitrogen On-Line Control Methods of nitrification process in advance |
| CN107298484A (en) * | 2017-06-23 | 2017-10-27 | 长春工程学院 | The SBR deep denitrification methods of municipal sewage nitric efficiency are improved using ammonia nitrogen |
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| CN100364902C (en) * | 2006-06-01 | 2008-01-30 | 北京工业大学 | Control apparatus and method for pulse water-feeding SBR deep denitrogenation process and course |
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