CN102557254A - System and method for conducting deep denitrification processing on medium-term landfill leachate - Google Patents
System and method for conducting deep denitrification processing on medium-term landfill leachate Download PDFInfo
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- CN102557254A CN102557254A CN2011104388949A CN201110438894A CN102557254A CN 102557254 A CN102557254 A CN 102557254A CN 2011104388949 A CN2011104388949 A CN 2011104388949A CN 201110438894 A CN201110438894 A CN 201110438894A CN 102557254 A CN102557254 A CN 102557254A
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Abstract
The invention provides a system and a method for conducting deep denitrification processing on medium-term landfill leachate. A dissolved oxygen (DO) sensor and an oxidation reduction potential (ORP) sensor are respectively connected with a DO tester and an ORP tester, the DO tester, the ORP tester and an aeration mechanism are all connected with a transducer, the ORP tester, the DO tester and the transducer are all connected with a process controller through a computer, and the process controller is respectively connected with a stirring mechanism, a water inlet mechanism, a water outlet mechanism and the aeration mechanism. The steps of applying the processing method of the system are sequentially injecting waste water in a sequencing batch reactor (SBR) and starting the system, enabling the aeration mechanism and the stirring mechanism to conduct nitration, starting the stirring mechanism to conduct denitrification, sediment, dewatering and leaving unused, and enabling the computer to judge the set value of cycle times. The system and the method can solve processing problems of the medium-term landfill leachate, improve use ratio of an organic carbon source in raw water in a processing process, and achieve deep denitrification with low processing cost.
Description
Technical field
The present invention relates to the dirty water living creature processing technique field, especially a kind of to mid-term percolate carry out the system and method that advanced nitrogen is handled.
Background technology
In a single day city domestic refuse percolation liquid gets into natural water, can cause the serious destruction that can not repair to the water surrounding of China, and how the processing city domestic refuse percolation liquid of economical and efficient has become the important topic that concerns China's water environment safety.Especially the denitrogenation problem of percolate is the terminal point and the difficult point of research both at home and abroad always.Bio-denitrification technology is owing to its reusable edible, and processing costs is low, " marries again " for the uncontamination that removes of real meaning, is widely used in the denitrogenation of percolate at present.In the nitrifying process of biological denitrificaion; The power consumption that is used for the gas blower aeration accounts for more than 60% of total energy consumption, and the aeration phase in present most of percolate biology treatment technology adopts uncontrollable Root's blower or centrifugal blower, omnidistance full power operation in the nitrated process of aeration; Energy utilization rate is low; Thereby cause the increase of processing cost, gas blower shortening in work-ing life, maintenance of the equipment and maintenance cost are high.
Traditional biologic process for treating sewage after nitrated end, the organic carbon approach exhaustion in the system.In order to realize that denitrification reaches denitrogenation truly, carbon source is accomplishing denitrification outside must in system, adding, otherwise total nitrogen can't reach national up-to-date promulgation " percolate emission standard ".This operator scheme has not only been wasted organic carbon source abundant in the former water, has also caused the increase of processing cost.
Summary of the invention
Weak point to above-mentioned technology; The present invention provides a kind of handling problem that can solve the percolate in mid-term; Improve the utilization ratio of organic carbon source in treating processes in the former water, and lower processing cost be issued to advanced nitrogen to mid-term percolate carry out the system and method that advanced nitrogen is handled.
For realizing above-mentioned purpose; The present invention provide a kind of to mid-term percolate carry out the system that advanced nitrogen is handled; Comprise sbr reactor device, stirring mechanism, water intake mechanism, discharge mechanism, aeration mechanism, DO transmitter and ORP transmitter; Also comprise DO determinator, ORP determinator, frequency transformer and process controller; Said DO transmitter and said ORP transmitter are connected with said DO determinator and said ORP determinator respectively; Said DO determinator, said ORP determinator all are connected with said frequency transformer with said aeration mechanism, and said ORP determinator, said DO determinator and said frequency transformer are connected with said process controller through computingmachine, and said process controller is connected with said aeration mechanism with said stirring mechanism, said water intake mechanism, said discharge mechanism respectively.
In said process controller, be provided with into water rly., water outlet rly., aeration rly. and stirrer rly.; Said water inlet rly. is connected with said water intake mechanism; Said water outlet rly. is connected with said water intake mechanism; Said aeration rly. is connected with said aeration mechanism, and said stirrer rly. is connected with said stirring mechanism.
Said ORP determinator, said DO determinator and said frequency transformer are connected with the signal input interface of said computingmachine, and the data discharge coupling of said computingmachine is connected with said process controller with said indicating meter respectively.
Said frequency transformer is connected with said aeration mechanism.
Said DO transmitter and said ORP transmitter all are arranged on the inside of said sbr reactor device.
It is a kind of to the method that mid-term, percolate carried out the advanced nitrogen processing that the present invention also provides simultaneously, may further comprise the steps:
(1) starts the intake pump water inlet, timing register is set, after system starts, waste water is injected the sbr reactor device through process controller;
(2) start aeration mechanism and stirring mechanism and carry out nitratedly, the frequency of gas blower is handled as the real-time controlled variable of nitrifying process and through process controller;
(3) after the nitrated end, stop aeration;
(4) start stirring mechanism and carry out denitrification, begin to stir after closing gas blower and intake valve, and gather the ORP signal;
(5) close stirring mechanism, begin deposition, after reaching the predefined ST, get into next process;
(6) start the flowing water Valve draining, after draining finishes, get into next process;
(7) close flowing water Valve, begin to leave unused, after reaching predefined idle mixing time, the cycle index set(ting)value of the entire reaction of system's reading pre-set;
(8) computingmachine is judged the set(ting)value of cycle index, if reach the set(ting)value of the cycle index of predefined entire reaction, it is out of service that then gear makes system automatically, otherwise, then begin to handle from step (1) beginning circulation again.
In step (2); Adopt aeration and agitation cycle alternative mode that the sbr reactor device is carried out nitration treatment; When starting aeration mechanism; Through process controller the cycle alternation of aeration and stirring is set at interval, utilized DO sensor acquisition DO numerical value, judge whether that according to the size of DO numerical value needs pass through the wheel speed frequency that process controller and frequency transformer are regulated gas blower as controlled variable.
When DO numerical value during less than 0.5mg/L, then increase the wheel speed frequency of gas blower, strengthen air quantity; When DO numerical value during greater than 0.5mg/L, then reduce the wheel speed frequency of gas blower, reduce air quantity.
In step (3), with the frequency signal input process unit of gas blower, through filtering process, differentiate is calculated, and obtains the process real-time controlled variable, when the change point of lowering speed quickening appears in the frequency of gas blower, then shows nitrated end.
In step (4),, when the change point of lowering speed quickening appears in the ORP signal value, show that then denitrification finishes with the real-time controlled variable of ORP signal as SBR method denitrification process.
Compared with prior art, the present invention has the following advantages:
Treatment system provided by the invention adopts single sbr reactor device, breaks through traditional control method, and water inlet back aeration and stirring alternate run are until nitrated end; Last anoxia stirring does not add any organic carbon source, utilizes sludge internal carbon source to carry out denitrification; Final reaction finishes draining; Its water outlet total nitrogen is lower than 40mg/L, and its clearance reaches more than 95%, reaches the emission standard of the percolate of the new promulgation of country about total nitrogen.In this process, be process control parameters through adopting frequency f, when keeping system's LDO, control the reaction times of nitrifying process in real time, in time stop aeration.The anoxia stirring stage after aeration finishes, do not add any carbon source, and, judge denitrifying terminal point accurately through real-time detection to ORP numerical value, stop to stir, save energy consumption.Its sbr reactor device simple in structure, the reaction impellent is big, anti impulsion load, sludge settling is good, and flexible operation is changeable, but characteristics such as periodical operation are specially adapted to the little but special trade effluent of water quality of the water yield such as treating refuse percolate.Compare with other technologies, not only effluent quality is good, and processing costs is low, has good economic benefit.
The method of using above-mentioned treatment system not only can effectively reduce aeration and spend the time of stirring, and can also realize intelligentized control to the variation of the self-adaptation different quality water yield, under the prerequisite that guarantees water quality, farthest saved the energy.
The present invention can be widely used in containing the processing of the suitable trade effluent of high organic object height ammonia nitrogen and C/N ratio, is specially adapted to use the sewage work of SBR technology or the sewage work of preparing to adopt SBR technology.
Description of drawings
Fig. 1 is the structure iron of components of system as directed of the present invention;
Fig. 2 is the schema of the inventive method part;
Fig. 3 is the embodiment schema of Fig. 2;
Fig. 4 is treating refuse percolate parameter Changing Pattern of the present invention and pollutant removal map.
Main nomenclature is following:
1-SBR reactor drum 2-water inlet pipe 3-intake pump
4-inlet valve 5-rising pipe 6-gas blower
7-solarization air cap 8-stirring rake 9-aeration tube
10-aeration tube air intake valve 11-ORP transmitter 12-DO transmitter
13-frequency transformer 14-DO determinator 15-ORP determinator
16-computingmachine 17-signal input interface 18-signal output interface
The 19-indicating meter 20-process controller 21-rly. of intaking
22-water outlet rly. 23-aeration rly. 24-stirrer rly.
25-flowing water Valve 26-stirring motor
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
As shown in Figure 1; It is a kind of to the system that mid-term, percolate carried out the advanced nitrogen processing that the present invention provides, and is made up of with process controller 20 sbr reactor device 1, stirring mechanism, water intake mechanism, discharge mechanism, aeration mechanism, computingmachine 16, DO transmitter 12, ORP transmitter 11, DO determinator 14, ORP determinator 15, frequency transformer 13.Wherein DO determinator 14, ORP determinator 15 and aeration mechanism all are connected with frequency transformer 13, and ORP determinator 15, DO determinator 14 and frequency transformer 13 are connected with process controller 20 through computingmachine 16, and this frequency transformer 13 is connected with aeration mechanism.This process controller 20 is connected with stirring mechanism, water intake mechanism, discharge mechanism and aeration mechanism respectively.DO transmitter 12 and ORP transmitter 11 all are arranged on the inside of sbr reactor device 1, and DO transmitter 12 is connected with DO determinator 14 through lead, and ORP transmitter 11 is connected with ORP determinator 15 through lead.ORP determinator 15, DO determinator 14 and frequency transformer 13 are connected with the signal input interface 17 of computingmachine 16, and computingmachine 16 is connected with process controller 20 with indicating meter 19 respectively through the data discharge coupling 18 on its body.In process controller 20, be provided with into water rly. 21, water outlet rly. 22, aeration rly. 23 and stirrer rly. 24; Wherein, Water inlet rly. 21 is connected with water intake mechanism; Water outlet rly. 22 is connected with water intake mechanism, and aeration rly. 23 is connected with aeration mechanism, and stirrer rly. 24 is connected with stirring mechanism.The control interface of computingmachine 16 can show on indicating meter 19.
Water intake mechanism is made up of with inlet valve 4 water inlet pipe 2, intake pump 3, and an end of water inlet pipe is connected with sbr reactor device 1 injection side, and intake pump 3 is successively set on the pipeline of water inlet pipe 2 with inlet valve, and intake pump 3 is connected with water inlet rly. 21 through lead.Water intake mechanism is made up of rising pipe 5 and flowing water Valve 25, and flowing water Valve 25 is arranged on the pipeline of rising pipe 5, and an end of rising pipe 5 is connected with sbr reactor device 1 injection side, and flowing water Valve 25 is connected with water outlet rly. 22 through lead.Aeration mechanism is made up of with solarization air cap 7 gas blower 6, aeration tube 9, aeration tube air intake valve 10; One end of aeration tube 9 is connected with gas blower 6; The other end of aeration tube 9 is connected with the solarization air cap 7 that is arranged on sbr reactor device 1 bottom; Aeration tube air intake valve 10 is arranged on the pipeline of aeration tube 9, and gas blower 6 is connected with frequency transformer 13 with aeration rly. 23 respectively through lead.Stirring mechanism is made up of stirring motor 26 and stirring rake 8, and stirring motor 26 is connected with the top of stirring rake 8, and stirring rake 8 is arranged on the bottom of sbr reactor device 1, and stirring motor 26 is connected with stirrer rly. 24 through lead.
The main device of reaction is the sbr reactor device, and structure of reactor is simple, and the reaction impellent is big; Anti impulsion load, sludge settling is good, and flexible operation is changeable; But characteristics such as periodical operation are specially adapted to the little but special trade effluent of water quality of the water yield such as treating refuse percolate.Compare with other technologies, not only effluent quality is good, and processing costs is low, has good economic benefit.
Above-mentioned treatment system adopts single sbr reactor device, breaks through traditional control method, and water inlet back aeration and stirring alternate run are until nitrated end; Last anoxia stirring does not add any organic carbon source, utilizes sludge internal carbon source to carry out denitrification; Final reaction finishes draining; Its water outlet total nitrogen is lower than 40mg/L, and its clearance reaches more than 95%, reaches the emission standard of the percolate of the new promulgation of country about total nitrogen.In this process, be process control parameters through adopting frequency f, when keeping system's LDO, control the reaction times of nitrifying process in real time, in time stop aeration.The anoxia stirring stage after aeration finishes, do not add any carbon source, and, judge denitrifying terminal point accurately through real-time detection to ORP numerical value, stop to stir, save energy consumption.Its sbr reactor device simple in structure, the reaction impellent is big, anti impulsion load, sludge settling is good, and flexible operation is changeable, but characteristics such as periodical operation are specially adapted to the little but special trade effluent of water quality of the water yield such as treating refuse percolate.Compare with other technologies, not only effluent quality is good, and processing costs is low, has good economic benefit.
As shown in Figure 2, it is a kind of to the method that mid-term, percolate carried out the advanced nitrogen processing that the present invention also provides simultaneously, may further comprise the steps:
(1) starts the intake pump water inlet, timing register is set, after system starts, waste water is injected the sbr reactor device, after reaching the predefined time, close intake pump and inlet valve through process controller.
In step (1), confirm flooding time according to flooding quantity, and timing register is set through process controller; After system starts, start intake pump pending waste water is injected the sbr reactor device, after reaching the predefined time; Close intake pump and inlet valve, get into next process.
(2) start aeration mechanism and stirring mechanism and carry out nitratedly, the frequency of gas blower is handled as the real-time controlled variable of nitrifying process and through process controller.
In step (2), at first aeration is set at interval, as being half a hour spacing frequency through process controller.At aeration phase, open air intake valve, start gas blower, the sbr reactor device is carried out aeration.In addition, utilize DO sensor acquisition DO signal simultaneously, as controlled variable, judge whether that according to the size of DO numerical value needs pass through the wheel speed frequency that process controller and frequency transformer are regulated gas blower with DO numerical value.When DO numerical value during less than 0.5mg/L, then increase the wheel speed frequency of gas blower, strengthen air quantity; When DO numerical value during greater than 0.5mg/L, then reduce the wheel speed frequency of gas blower, reduce air quantity.The sbr reactor device automatically switches to agitation phases after carrying out halfhour aeration.At this moment, system closing aeration air intake valve and gas blower are opened whisking appliance, stir.After whisking appliance stirred half a hour, system can automatically switch to aeration phase, constantly cycle alternation.
In step (2), with the frequency signal of gas blower real-time controlled variable as SBR method aerobic nitrification process.With the frequency signal input process unit of gas blower, through filtering process, differentiate is calculated, and obtains the process real-time controlled variable, when the change point of lowering speed quickening appears in the frequency of gas blower, then shows nitrated end.This moment, topworks closed gas blower and intake valve, stopped aeration, got into next process then.
(3) after the nitrated end, stop aeration.
(4) start stirring mechanism and carry out denitrification, begin to stir after closing gas blower and intake valve, and gather the ORP signal.
In step (4), close gas blower and aeration intake valve after, begin to stir, at the same time, open ORP sensor acquisition ORP signal.With the real-time controlled variable of ORP, when the change point of lowering speed quickening appears in the ORP signal value, show that then denitrification finishes as SBR method denitrification process.This moment, topworks closed stirring, yet got into next process.
(5) close stirring mechanism, set the sedimentary time and begin deposition, and carry out timing, after reaching the predefined ST, get into next process through process controller.
(6) start the flowing water Valve draining, at first set the time of draining, open flowing water Valve, will handle back water outside rising pipe is discharged to the sbr reactor device; Draining is closed the valve on the rising pipe after finishing, and gets into next process.
(7) close flowing water Valve, begin to leave unused, under process controller is regulated, after reaching predefined idle mixing time, the cycle index set(ting)value of the entire reaction of system's reading pre-set.
(8) computingmachine is judged the set(ting)value of cycle index, if reach the set(ting)value of the cycle index of predefined entire reaction, it is out of service that then gear makes system automatically, otherwise, then begin to handle from step (1) beginning circulation again.
The working method that is adopted among the present invention is compared with traditional operating method; Can obtain higher nitric efficiency; Major cause has: 1, in the nitrated stage, adopt the operational mode that intermittently stirs intermittent aeration, keep lower dissolved oxygen levels at aeration phase simultaneously.Under this operational mode, system can reach higher synchronous nitration denitrification effect (about 40%).2, after the nitrated end, be not sedimentation and drawing immediately, but continue to stir.Because in the operating method that the nitrated stage adopts intermittent aeration intermittently to stir, oxygen is less relatively to the restraining effect of denitrifying bacteria, therefore, stir in nitrated end continued.When system transition became anoxic condition, the activity of denitrifying bacteria was activated.In this stage, denitrifying bacteria can utilize the carbon source that himself stores to carry out denitrification.Therefore, system's denitrification completely under the situation of not adding any organic carbon source, the final outflow water total nitrogen is lower than 40mg/L, has greatly reduced processing costs.Simultaneously, the toxic restraining effect of percolate and this operating method combined action can reduce the growth of mud to greatest extent under the prerequisite that guarantees effluent quality.Under stable case, sludge quantity will be kept running balance, therefore can further reduce the expense of sludge disposal, reduce processing cost.
The present invention combines VFC and control in real time, can farthest cut down the consumption of energy.At first, at aeration phase, through the frequency of control gas blower; In conjunction with frequency transformer, system dissolves oxygen in the nitrifying process is maintained constant level, this control method is compared with the control method of constant aerating amount; Can reduce the gas blower aeration energy consumption effectively, save about 40% energy consumption.Secondly, through real-time control strategy, as the real-time parameter of controlling, can judge the time of nitrated end of system and denitrification end accurately with the frequency of control gas blower and ORP value.This control method not only can effectively reduce aeration and spend the time of stirring, and can also realize intelligentized control to the variation of the self-adaptation different quality water yield, under the prerequisite that guarantees water quality, farthest saved the energy.
As shown in Figure 3, be process object (pH=7.5～8.0, COD=3900～4000mg/L, NH with the actual percolate of Beijing refuse landfill
4 +-N=800～900mg/L, NO
x≤10mg/L).When the phase begins weekly, mixed solution ammonia nitrogen concentration 150～160mg/L in the reactor drum, COD concentration is 850～900mg/L, NO
xConcentration≤5mg/L, sludge concentration=6.5g/L～7g/L, temperature=25 ℃, its detailed process is following:
(1) at first open inlet valve, start intake pump pending percolate is injected the sbr reactor device, setting flooding time through process controller is 10 minutes, and 10 minutes laggard intake pump and inlet valves of closing get into next process;
(2) starting aeration mechanism and stirring mechanism and carry out nitratedly, at first through process controller aeration is set at interval, is spacing frequency with the half a hour.At aeration phase, open air intake valve, start gas blower, the sbr reactor device is carried out aeration.In addition, utilize DO sensor acquisition DO signal simultaneously, as controlled variable, judge whether that according to the size of DO numerical value needs pass through the wheel speed frequency that process controller and frequency transformer are regulated gas blower with DO numerical value.When DO numerical value during less than 0.5mg/L, then increase the wheel speed frequency of gas blower, strengthen air quantity; When DO numerical value during greater than 0.5mg/L, then reduce the wheel speed frequency of gas blower, reduce air quantity.The sbr reactor device automatically switches to agitation phases after carrying out halfhour aeration.At this moment, system closing aeration air intake valve and gas blower are opened whisking appliance, stir.After whisking appliance stirred half a hour, system can automatically switch to aeration phase, constantly cycle alternation;
(3) after the nitrated end, with the frequency signal of gas blower real-time controlled variable as SBR method aerobic nitrification process.With the frequency signal input process unit of gas blower, through filtering process, differentiate is calculated, and obtains the process real-time controlled variable, when the change point of lowering speed quickening appears in the frequency of gas blower, then shows nitrated end.This moment, topworks closed gas blower and intake valve, stopped aeration, got into next process then;
(4) start stirring mechanism and carry out denitrification, close gas blower and aeration intake valve after, begin to stir, at the same time, open ORP sensor acquisition ORP signal.With the real-time controlled variable of ORP numerical value, when the change point of lowering speed quickening appears in the ORP signal value, show that then denitrification finishes as SBR method denitrification process.This moment, topworks closed stirring, yet got into next process;
(5) close stirring mechanism, setting the ST through process controller is 30 minutes, and gas blower, whisking appliance, inlet valve, air intake valve, water discharging valve and spoil disposal valve are all closed at this moment.After reaching the predefined ST, get into next process;
(6) start the flowing water Valve draining, at first set the time of draining, open flowing water Valve, will handle back water outside rising pipe is discharged to the sbr reactor device; Draining is closed the valve on the rising pipe after finishing, and gets into next process;
(7) close flowing water Valve, begin to leave unused, under process controller is regulated, be set at 2 hours working time idle mixing time, after reaching predefined idle mixing time, the cycle index set(ting)value of the entire reaction of system's reading pre-set;
(8) computingmachine is judged the set(ting)value of cycle index, if reach the set(ting)value of the cycle index of predefined entire reaction, it is out of service that then gear makes system automatically, otherwise, then begin to handle from step (1) beginning circulation again.
Utilize provided by the present invention to mid-term percolate carry out the system and method that advanced nitrogen handles and handle the percolate in mid-term, under the condition of not adding any organic carbon source, final outflow water ammonia nitrogen≤5mg/L, NO
2≤5mg/L, NO
3≤5mg/L, TN≤40mg/L has reached in the relevant percolate emission standard of national new promulgation the standard about ammonia nitrogen and total nitrogen.In addition, compare with the mode of constant aerating amount, this control method and gear have been saved about 40% power consumption.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
- One kind to mid-term percolate carry out the system that advanced nitrogen is handled; Comprise sbr reactor device, stirring mechanism, water intake mechanism, discharge mechanism, aeration mechanism, DO transmitter and ORP transmitter; It is characterized in that; Also comprise DO determinator, ORP determinator, frequency transformer and process controller; Said DO transmitter and said ORP transmitter are connected with said DO determinator and said ORP determinator respectively; Said DO determinator, said ORP determinator all are connected with said frequency transformer with said aeration mechanism, and said ORP determinator, said DO determinator and said frequency transformer are connected with said process controller through computingmachine, and said process controller is connected with said aeration mechanism with said stirring mechanism, said water intake mechanism, said discharge mechanism respectively.
- 2. according to claim 1 to mid-term percolate carry out the system that advanced nitrogen is handled; It is characterized in that; In said process controller, be provided with into water rly., water outlet rly., aeration rly. and stirrer rly., said water inlet rly. is connected with said water intake mechanism, and said water outlet rly. is connected with said water intake mechanism; Said aeration rly. is connected with said aeration mechanism, and said stirrer rly. is connected with said stirring mechanism.
- 3. according to claim 2 to mid-term percolate carry out the system that advanced nitrogen is handled; It is characterized in that; Said ORP determinator, said DO determinator and said frequency transformer are connected with the signal input interface of said computingmachine, and the data discharge coupling of said computingmachine is connected with said process controller with said indicating meter respectively.
- 4. according to claim 3 to mid-term percolate carry out the system that advanced nitrogen is handled, it is characterized in that said frequency transformer is connected with said aeration mechanism.
- 5. according to claim 4 to the system that mid-term, percolate carried out the advanced nitrogen processing, it is characterized in that said DO transmitter and said ORP transmitter all are arranged on the inside of said sbr reactor device.
- 6. an application rights requires 1 said system, realizes the method that percolate carries out the advanced nitrogen processing to mid-term, may further comprise the steps:(1) starts the intake pump water inlet, timing register is set, after system starts, waste water is injected the sbr reactor device through process controller;(2) start aeration mechanism and stirring mechanism and carry out nitratedly, the frequency of gas blower is handled as the real-time controlled variable of nitrifying process and through process controller;(3) after the nitrated end, stop aeration;(4) start stirring mechanism and carry out denitrification, begin to stir after closing gas blower and intake valve, and gather the ORP signal;(5) close stirring mechanism, begin deposition, after reaching the predefined ST, get into next process;(6) start the flowing water Valve draining, after draining finishes, get into next process;(7) close flowing water Valve, begin to leave unused, after reaching predefined idle mixing time, the cycle index set(ting)value of the entire reaction of system's reading pre-set;(8) computingmachine is judged the set(ting)value of cycle index, if reach the set(ting)value of the cycle index of predefined entire reaction, it is out of service that then gear makes system automatically, otherwise, then begin to handle from step (1) beginning circulation again.
- 7. according to claim 6 to mid-term percolate carry out the method that advanced nitrogen is handled; It is characterized in that; In step (2); Adopt aeration and agitation cycle alternative mode that the sbr reactor device is carried out nitration treatment, when starting aeration mechanism, the cycle alternation of aeration and stirring is set at interval through process controller; Utilize DO sensor acquisition DO numerical value as controlled variable, judge whether that according to the size of DO numerical value needs pass through the wheel speed frequency that process controller and frequency transformer are regulated gas blower.
- 8. according to claim 7 to mid-term percolate carry out the method that advanced nitrogen is handled, it is characterized in that, when DO numerical value during, then increase the wheel speed frequency of gas blower less than 0.5mg/L, strengthen air quantity; When DO numerical value during greater than 0.5mg/L, then reduce the wheel speed frequency of gas blower, reduce air quantity.
- 9. according to claim 6 to the method that mid-term, percolate carried out the advanced nitrogen processing, it is characterized in that, in step (3); Frequency signal input process unit with gas blower; Through filtering process, differentiate is calculated, and obtains the process real-time controlled variable; When the change point of lowering speed quickening appears in the frequency of gas blower, then show nitrated end.
- 10. according to claim 6 to mid-term percolate carry out the method that advanced nitrogen is handled; It is characterized in that; In step (4); With the real-time controlled variable of ORP signal, when the change point of lowering speed quickening appears in the ORP signal value, show that then denitrification finishes as SBR method denitrification process.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755028A (en) * | 2014-01-16 | 2014-04-30 | 北京工业大学 | Method for deep denitrification of metaphase landfill leachate through single-stage SBR (Styrene Butadiene Rubber) post denitrification treatment |
| CN103936151A (en) * | 2014-04-10 | 2014-07-23 | 北京工业大学 | Efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage |
| CN106698644A (en) * | 2016-11-21 | 2017-05-24 | 青岛理工大学 | Automatic control mechanical aeration stirring intermittent reaction tank for garbage leachate |
| CN110143715A (en) * | 2019-01-29 | 2019-08-20 | 广东君道环保科技有限公司 | A kind of emergency landfill leachate treatment equipment and treatment process |
| CN115124144A (en) * | 2022-05-07 | 2022-09-30 | 上海同济建设科技股份有限公司 | Energy-saving control method for leachate treatment device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562808A (en) * | 2004-03-26 | 2005-01-12 | 彭永臻 | Biological denitrification technique for waste water of bean products and fuzzy control device and method |
-
2011
- 2011-12-23 CN CN 201110438894 patent/CN102557254B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562808A (en) * | 2004-03-26 | 2005-01-12 | 彭永臻 | Biological denitrification technique for waste water of bean products and fuzzy control device and method |
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