CN201433129Y - Aeration biological filter tank dissolved oxygen intelligent control system - Google Patents
Aeration biological filter tank dissolved oxygen intelligent control system Download PDFInfo
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- CN201433129Y CN201433129Y CN2008202144055U CN200820214405U CN201433129Y CN 201433129 Y CN201433129 Y CN 201433129Y CN 2008202144055 U CN2008202144055 U CN 2008202144055U CN 200820214405 U CN200820214405 U CN 200820214405U CN 201433129 Y CN201433129 Y CN 201433129Y
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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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
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Abstract
An aeration biological filter tank dissolved oxygen intelligent control system comprises an aeration biological filter tank and a roots fan, also comprises a frequency converter device, a computer monitoring system and a detection instrument device. The aeration biological filter tank is equipped with a dissolved oxygen meter, the frequency converter device is connected with the roots fan, the output end of the roots fan is provided with a gas flowmeter, the outputs of the detection instrument device, the dissolved oxygen meter and the gas flowmeter are connected with the computer monitoring system, and the frequency converter device is bidirectionally connected with the computer monitoring system. The system of the utility model has the advantages of stable running and convenient operation, seeing from the control performance, the adjustment is more in time, the overshooting is not big, the running is stable, thus can effectively solve the problems of big time delay of BAF aeration process and time-varying parameter, especially have very strong adaptability to the states of flow mutation and water quality mutation, simultaneously reduce the energy consumption, and meet the actualrequirement of production control, and the whole intelligent control system has higher automation level.
Description
Technical field
The utility model relates to a kind of intelligence control system, is applicable to the biochemical treatment system of effluent sewage, middle water depth treatment station, is specially BAF dissolved oxygen intelligent Controlling System.
Background technology
BAF is called for short BAF (Biological Aerated Filter), be by water distributing area, supporting layer, aerating system, the filtrate district, exhalant region, compositions such as backwash system and Controlling System, organic pollutant in the sewage is decomposed into products such as nontoxic gas and biological sludge rapidly by action of microorganisms, this process synthesis filtration, multiple cleaning actions such as absorption and biological metabolism, it is simple to have flow process, small accommodation area, the processing efficiency height, effluent quality well also can save advantages such as secondary sedimentation basins, has obtained purposes more and more widely in effluent sewage on the water depth treatment station biochemical treatment system.
Dissolved oxygen concentration among the BAF, promptly dissolved oxygen amount is an important step in the biological growth process, effective control of dissolved oxygen is not only had influence on the water quality of water outlet but also relates to energy-conservation.Select suitable BAF air output, claim aeration rate again, should make the dissolved oxygen in the water can not only satisfy the needs of microorganism growth, also can make its concentration remain on the low certain value of trying one's best of permission, be generally 3mg/L, this is the key of dissolved oxygen control, because the dissolved oxygen concentration vibration is big, a section concentration value differs bigger on every side, and very strong non-linear and hysteresis quality is arranged, thus the BAF aeration rate rationally and optimal control be the emphasis and the difficult problem of sewage disposal all the time.
Some measuring instruments that existing many effluent sewage process control systems are adopted and the function of operating device are not really perfect, with the BAF dissolved oxygen concentration is control signal, the roots blower exit butterfly valve is that the mode of power element is controlled, The whole control system control hysteresis, precision is low, fluctuation is big, the energy consumption height, this method of design does not reach the control effect of expection, characteristic such as the water quality of while BAF, envrionment conditions etc., often change suddenly, emergency processing when Controlling System can't find the dissolved oxygen unique point, in fact also control with regard to the execution time and handle whole technological process, the purpose of water recycling and save energy in therefore often being difficult to satisfy.
Summary of the invention
Problem to be solved in the utility model is: the control and the measuring ability of existing BAF are not very perfect, can not satisfy user demand, need the BAF Controlling System of the stable control of a kind of energy, save energy.
The technical solution of the utility model is: BAF dissolved oxygen intelligent Controlling System, comprise BAF and roots blower, middle water comes water, the backwash water pump comes water, the backwash roots blower be the wind comes from and the output of roots blower connects the input of BAF, the output of BAF connects the backwash recycle-water pond of anhydrating, also be provided with frequency-converter device, computer supervisory control system and measuring instrument device, BAF is equipped with the dissolved oxygen table, frequency-converter device connects roots blower, middle water comes current instrumentation after testing, the output terminal of roots blower is provided with gas meter, the measuring instrument device, the dissolved oxygen table, the output of gas meter connects computer supervisory control system, and frequency-converter device is connected with computer supervisory control system is two-way.
The preferred caloic formula of the utility model gas meter mass-flow gas meter; The measuring instrument device comprises thermometer, under meter, COD table, ammonia nitrogen table, PH table, conductivity meter, turbidimeter and chlorine residue table; The dissolved oxygen table is a LDO type dissolved oxygen table
The tandem control that the utility model adopts feedforward and feedback to combine, computer supervisory control system adopts expert control method, it is a kind of intelligence control system that is used for the BAF dissolved oxygen based on Expert Controller, this Controlling System can be when the water quality and the water yield etc. change, regulate roots blower by frequency-converter device, and then the adjusting aeration rate guarantees suitable dissolved oxygen amount and reaches purpose of energy saving.
Because dissolved oxygen non-linear in BAF, characteristics such as hysteresis quality, the adjusting of dissolved oxygen amount and the variation that the roots blower motor speed is air flow quantity simultaneously has the very big time difference, and the BAF dissolved oxygen amount of backwash process changes greatly, in order to guarantee the BAF effluent characteristics, cut down the consumption of energy, effectively suppress various interference, the utility model adopts suitable measuring instrument and operating device according to the technology real time status, change and the adjustment controlled volume, utilize advanced control algolithm and tandem to control and form a cover dependable performance, real-time and easy to operate intelligence control system ensures that dissolved oxygen amount is stabilized in the optimum value scope in the effluent sewage.
On the output terminal export pipeline of roots blower, be equipped with gas meter, replace direct control dissolved oxygen amount by the control that aeration rate is changed.Under relatively stable situation such as influent quality, the water yield, the influence that is subjected to the external environment factor when Controlling System makes the roots blower rate of discharge that variation take place, gas meter is in time delivered to computer supervisory control system to the observed value that changes immediately, computer supervisory control system is very fast to be judged this variation, changes the aeration rate of rotating speed to keep BAF to need of roots blower rapidly by frequency-converter device.Constitute a flow control circuit like this,, disturb at some just not to be overcome before also feeding through to dissolved oxygen, the major part influence of Controlling System is eliminated, make dissolved oxygen return to set(ting)value by the control of flow control circuit.And at influent quality, the water yields etc. change under the bigger situation, bigger fluctuation has taken place in the dissolved oxygen among the BAF, gas meter arrives computer supervisory control system with the measurement feedback of real gas flow, the set(ting)value of while BAF dissolved oxygen amount, the observed value of observed value and dissolved oxygen variation tendency and measuring instrument device also is input to computer supervisory control system simultaneously, the historical data of coupling system, by the intrasystem expert's sequence of control of computer supervisory control system, the flow rate calculation unit of computer supervisory control system can be according to the given again gas flow set(ting)value of these situations, the control of conversion apparatus, in time adjust roots blower, adjust the BAF aeration rate, make dissolved oxygen amount return to set(ting)value.
BAF aerating system current consumption is bigger, and the utility model adopts the actual run time and the frequency of frequency-converter device control roots blower, can reach purpose of energy saving.
The beneficial effects of the utility model are: system is stable, easy to operate, from control performance, to regulate more in time, overshoot is little, stable, can effectively solve the problem of BAF aeration process long time delay and parameter time varying, the state to flow sudden change and water quality mutation has very strong adaptability especially, has reduced energy consumption simultaneously, satisfy the actual needs of production control, whole intelligence control system has higher automatization level.
Description of drawings
Fig. 1 is the utility model BAF Controlling System structured flowchart.
Fig. 2 is the utility model BAF cascade control system functional diagram.
Fig. 3 is the Expert Controller structure iron of the utility model computer supervisory control system.
Fig. 4 is the Expert Controller software main program schema of the utility model computer supervisory control system.
Embodiment
As Fig. 1, the utility model comprises BAF 1 and roots blower 2, middle water comes water 11, the backwash water pump comes water 12, the backwash roots blower the wind comes from 13 and the output of roots blower 2 connect the input of BAF 1, the output of BAF 1 connects the backwash recycle-water pond 14 of anhydrating, also be provided with frequency-converter device 3, computer supervisory control system 4 and measuring instrument device 5, BAF 1 is equipped with dissolved oxygen table 6, frequency-converter device 3 connects roots blower 2, in water come the water 11 measuring instrument device 5 of flowing through, the output terminal of roots blower 2 is provided with gas meter 7, measuring instrument device 5, dissolved oxygen table 6, the output of gas meter 7 connects computer supervisory control system 4, frequency-converter device 3 and 4 two-way connections of computer supervisory control system.Measuring instrument device 5 comprises that thermometer TT, under meter FT1, COD show COD, ammonia nitrogen table NH
3, PH shows PH, conductivity meter C, turbidimeter NTU and chlorine residue table CL.
The utility model adopts the feeding back closed-loop control system that disturbs feed forward control mode and frequency transformer and gas meter to form to control the rotating speed of roots blower automatically, and utilization realizes the automatic adjusting of BAF dissolved oxygen amount based on the computer supervisory control system of Expert Controller.The supervision of BAF system and control are by measuring instrument, comprise measuring instrument device 5, dissolved oxygen table 6 and gas meter 7, and several parts such as frequency-converter device 3 and computer supervisory control system 4 are formed.
Measuring instrument: the sewage discharge of increasingly stringent and reuse standard monitor and the demands for higher performance of the instrument of controlling that to being used for sewage treatment process instrument is to realize the precondition of automation control system.Roots blower exit gas under meter is selected caloic formula mass-flow gas meter for use, be called for short thermal mass flowmeter, this kind under meter adopts thermodiffusion principle, thermal diffusion technology be a kind of under severe condition excellent property, technology that reliability is high, it has the precision height, insensitive for pressure, temperature variation, flow range is wide, and the installation site no requirement (NR) is with dissolved oxygen epiphase ratio, its take off data is more accurate, need not safeguard basically; The dissolved oxygen table is very crucial in sewage treatment process, and its registration not only directly reflects the running status of BAF, but also influences the output of roots blower and relate to the control process of intermediate water reuse system some other.The weak point that traditional Clark polarography dissolved oxygen table is measured dissolved oxygen is electrolytic solution meeting loss, inefficacy; Electrode surface can produce dirt; Electrode film may be covered by dirt, and maintenance is big.The LDO type dissolved oxygen table that the utility model adopts, measure dissolved oxygen based on fluorescent method, the LDO transmitter is covered by a kind of fluorescent material, do not have semi-permeable membranes, its reaction is only relevant with the oxygen concentration of sensor surface contact, the accuracy height of measurement, be not subjected to the influence of chemical substance in the water, can provide more stable in longer for some time, measure accurately, its response is very fast, just can provide reading in less than 30 seconds time; The various water quality analysis instrument of the utility model measuring instrument device 5 are all selected existing more sophisticated product for use.
Frequency-converter device: it all is to realize by the variable valve of roots blower output terminal that the air quantity in present most of BAF dissolved oxygen Controlling System is regulated, this air quantity regulative mode not only makes the efficient of roots blower reduce, also make a lot of energy expenditures on variable valve, for saves energy, improve controlled levels, the utility model adopts the fan frequency conversion speed regulation device to replace the variable valve of poor efficiency high energy consumption, and energy-saving effect is very remarkable.According to the variation of BAF system gas consumption, frequency-converter device is by regulating the roots blower rotating speed of motor, the aeration rate that keeps the BAF system to need from motion tracking.Frequency-converter device provides in-built PID control algolithm function for the user realizes the closed-loop control of roots blower, it can be input to frequency-converter device with analog signals (4-20mA) feedback of outer transmitter input, and obtain deviation with the frequency-converter device setpoint frequency, carry out PID control, thereby make the rotating speed of blower fan follow the variation of command value and change.The utility model frequency-converter device operation scheme is versatile and flexible, can also can realize automatic control by the manual control of computer supervisory control system, can carry out electrical interlocks with other control systems simultaneously, realizes the automatic protection of BAF, can not produce because of the equipment failure influence.
Computer supervisory control system: according to the process characteristic and the scale of middle water depth treatment system, BAF dissolved oxygen supervisory system adopts programmable logic controller PLC and upper computer composition computer supervisory control system, and leaves the communication interface with power house dispersing control system DCS and level of factory information monitoring system MIS.PLC adopts AB ControlLogix series product, as AB1756-L62, upper computer adopts and grinds Chinese workers' industry control computer, computer supervisory control system can be finished the switching operation of processing unit, the step sort run of technical process, to each processing parameter detect, automatic warning and printing when data processing, report making and parameter are out-of-limit, carry out casualty record simultaneously, and unusual parameter or state carried out emergency review.
Sewage treatment process is complicated biochemical reaction, it is the process of after reaction, in producing, after mornig shift is adjusted technology, its the possibility of result will arrive the middle class in a kindergarten or night shift just can reflect, existing come the control of the running status of roots blower according to predefined dissolved oxygen upper lower limit value by the dissolved oxygen table unreliable, it is a lot of to add uncertain interfering factors, with the dissolved oxygen is control signal, single loop control system based on conventional pid control algorithm comes setting parameter to be difficult to prove effective, and the adjust pid parameter that obtains of certain stage is difficult to guarantee that its control effect to total system is in optimum state all the time.The complicated cascade PID Controlling System that the utility model adopts feedforward and feedback to combine, comprise main control loop and sub-control loop: the dissolved oxygen concentration of main control loop also is that aeration rate is controlled by the outlet airflow value of roots blower, foundation is based on the closed loop feedback control of roots blower outlet air quantity with based on the isoparametric feedforward series connection of water-quality guideline control, closed loop feedback is controlled to be: roots blower-thermal mass flowmeter-computer supervisory control system-frequency-converter device-roots blower, the feedforward series connection is controlled to be: measuring instrument device-computer supervisory control system-frequency-converter device-roots blower.The disturbance variable of feedforward series connection control is taken from influent quality, particularly COD, ammonia nitrogen, turbidity, PH, specific conductivity, chlorion etc., and the water yield and water temperature etc., according to the variation of water quality, set(ting)value, dissolved oxygen currency and the historical data in for some time of dissolved oxygen, computer supervisory control system recomputates the set(ting)value of a given aeration rate, in the disturbance variable of feedforward series connection control dissolved oxygen numerical value is arranged, can overcome fast like this because the interference that environment changes and brings the variation of dissolved oxygen amount set(ting)value to bring as temperature, biomembranous activity etc.The sub-control loop is: roots blower-frequency-converter device-roots blower, frequency-converter device internal PID control algolithm, frequency signal input converter device with roots blower, control by carrying out PID, thereby the aeration rate of roots blower is regulated by the frequency of frequency-converter device with the deviation of frequency-converter device setpoint frequency.Therefore the utility model cascade PID Controlling System has anti-interference, rapidity, adaptability and the good advantage of controlling quality.BAF cascade control system functional diagram as shown in Figure 2.
Whether Controlling System is in optimum state, and whether the parameter that its main influence factor is a setter is in optimum state, adopts pid control mode, and the parameter tuning of PID controller is the core of Control System Design.For Controlling System based on the linear model object, conventional PID controller be the simplest but be best controller, can satisfy the needs of industrial life factory substantially; For BAF this non-linear, the time change, coupling and parameter and the uncertain complex process of structure, adopt conventional pid parameter to adjust and seem that adaptability is not enough, be difficult to the effect that reaches satisfied.Therefore, the utility model is except the major and minor control loop design of hardware, reduce interference in conjunction with conventional pid control algorithm to eliminate sum of errors on the software, in very wide operational condition scope, keep robustness preferably, simultaneously in non-linear system without the acquisition process model, and directly use control algolithm to realize adjusting of BAF dissolved oxygen Controlling System pid parameter based on expert's control, adopt the thought of expert's control, on computer supervisory control system, designed the Expert Controller of BAF dissolved oxygen.
Expert's control method of adjusting is the thinking of adjusting that simulation has the experience commissioning staff, by the input/output signal of analysis and Control system, according to known adjusting rule regulator parameter is adjusted.The expert is applied to the PID setter from the setter of adjusting with wave form analysis and expert system technology, when the set-point of regulating loop or load/when interference changes, to regulate deviation, modify the judgement of PID regulator parameter to the response characteristic of time performance index as regulation quality.
Expert Controller of the present utility model is made up of four parts of knowledge base, control law collection, inference machine and feature identification and processing, and its structure iron as shown in Figure 3.
Knowledge base is made up of fact collection and experience database, experimental formula etc., true collection mainly comprises the relevant knowledge of controlled plant BAF, distribution situation as influent quality, inflow temperature and flooding velocity, the BAF environmental change, as temperature, biomembranous activity index, the dissolved oxygen amount of BAF control be the speed adjustment roots blower outlet air quantity by the control of conversion apparatus reflect etc.; Data in the experience database comprise each parameter variation range of influent quality, the setting range of each parameter of Expert Controller and amplitude thereof, quiet, the kinetic characteristic of gauge sensor, parameter and time of response, Controlling System comprises the performance index of PLC etc. and the experimental formula summed up by the expert etc.
The control law collection is according to expert or the skilled operator experience to controlled plant and operation operation thereof, adopt several different methods such as production rule, fuzzy relation and analytical form to describe the feature of controlled plant, can handle so various non-qualitatively, fuzzy information.For some time debugging by at the scene and sum up operator's service experience in conjunction with correlation theories knowledge, adopts production rule to constitute the control law collection, and whole process is simulated and calculated by computer.Comprise the input and output of BAF and the parameter of sign BAF pond internal state as control law centralized procedure variable, wherein controlled variable has roots blower air quantity, dissolved oxygen amount, flooding quantity, the backwashing water water yield etc.; For avoiding the roots blower overload operation, also designed rule-based load distribution system: consider indexs such as COD, ammonia nitrogen, turbidity, pH value, temperature according to influent quality, consider the processing load of BAF biochemical system, emphasis with water quality such as amount of inlet water or COD is regulated index, and the dissolved oxygen amount situation of consideration the day before yesterday and nearly for some time is determined the air quantity adjustment amount on the same day; In debug process, flooding velocity is divided into 6 grades according to its magnitude range; The variable quantity of inflow temperature is divided into 5 grades by its size, and will adds the amplitude limit condition; In addition, expert systems defines several BAF technologies operation up-set conditions, and these states are corresponding with relevant measure of control, and promptly the type of up-set condition and degree have determined which type of control method this takes, so that the system dissolved oxygen amount of making recovers normal etc. as early as possible.At last, sum up 105 control laws, promptly formed the control law collection of Expert Controller.
Because the scale of the knowledge base of this Expert Controller and control law collection is less, therefore, the search volume of inference machine is limited, employing be forward inference mechanism.For control law by forward direction after one by one the coupling, until the match is successful; Consider the processing of program out of control phenomenon when simultaneously, writing control law.
Feature identification mainly is to obtain by the feedback information of closed-loop control and the input information of system, by to the error of the controlled system of information processing and error change amount thereof etc. to the control Useful Information.React the dissolved oxygen amount that the BAF system needs by thermal mass flowmeter, the aeration rate set(ting)value with each each time period of space relatively obtains its departure then, and by calculating the variable quantity of deviation, control is implemented in segmentation.In addition, information processing also comprises the data necessary filtering measures, and the Expert Controller of the utility model computer supervisory control system adopts arithmetical mean filtering.
The control algolithm of expert's control realizes that in programmable logic controller PLC system PLC utilizes its closed-loop control module to realize pid parameter control, programmes with Rslogix5000.When being adjusted in design, BAF system dissolved oxygen amount not only considers the adjustment under the normal operating condition, and more to consider the water quality in the production run process, the time variation of the water yield, the output of control signal can not be too frequent, otherwise can produce vibration, cause the reason of system's control hysteresis a lot, time lag and feedback time hysteresis etc. are regulated in hysteresis, computer data lag of processing time, execution as the instrument sampling time, so every through control signal of 5 sampling period output, its software main program schema as shown in Figure 4.
Test-results by water recycle bin BAF scene in certain power plant and being analyzed as follows:
1, energy saving of system
Direct benefit: water recycle bin BAF has 6 aeration roots blowers altogether in certain power plant, the roots blower matched power is the 22KW motor, air quantity changes between 80%-30%, if motor wind supply quantity at full speed is Qn, open circuit loss is 0.1 (Y0 ≈ cosnt), every day, total wind supply quantity was 60%Qn, then
In the time of at full speed: Pp=(1-0.1) * 22kw=19.8kw
During frequency conversion: Pm2=2.2+ (60%)
3* 19.8kw=6.477kw
The power of saving: Pj=(19.8-6.477) kw=13.32kw
If the electricity charge are calculated by 0.35 yuan/kwh, the annual electricity charge of saving:
13.32kw * 24h * 365 * 6 * 0.35 yuan/kwh=245034 unit=24.5 ten thousand yuan
Indirect benefit: because roots blower adopts speed control by frequency variation to move continuously; wearing and tearing have been reduced to roots blower; service life of equipment and maintenance cycle have been prolonged greatly; the direct economic loss that has reduced maintenance cost and brought thus; system takes kinds of protect such as overcurrent, overvoltage, momentary power failure, short circuit, under-voltage, phase shortage, avoided because of motor burning influence that production brings directly and indirect economic loss.
2, the comparison under BAF dissolved oxygen history and the real-time tendency figure algorithms of different
Through field adjustable, use two kinds of different control algolithms.
For the BAF dissolved oxygen this non-linear, the time change, coupling and parameter and the uncertain complex process of structure, adopt conventional pid parameter to adjust and seem that adaptability is not enough, very difficultly can reach satisfied effect; The utility model reduces outer disturbing in conjunction with conventional pid control algorithm to eliminate sum of errors, in very wide condition and range, keep robustness preferably, simultaneously in non-linear system without the acquisition process model, and directly use control algolithm based on Expert Controller to realize that pid parameter adjusts, produce a desired effect.From control performance, regulate more timely, overshoot is little, stable, solve the problem of BAF aeration process long time delay and parameter time varying, particularly the state to flow and water quality mutation has very strong adaptability, can cut down the consumption of energy simultaneously, satisfy the needs of production control, be worth in the effluent sewage industry, applying.
Claims (9)
1, BAF dissolved oxygen intelligent Controlling System, comprise BAF (1) and roots blower (2), middle water comes water (11), the backwash water pump comes water (12), the backwash roots blower be the wind comes from (13) and the output of roots blower (2) connects the input of BAF (1), the output of BAF (1) connects the backwash recycle-water pond (14) of anhydrating, it is characterized in that also being provided with frequency-converter device (3), computer supervisory control system (4) and measuring instrument device (5), BAF (1) is equipped with dissolved oxygen table (6), frequency-converter device (3) connects roots blower (2), in water come water (11) the measuring instrument device (5) of flowing through, the output terminal of roots blower (2) is provided with gas meter (7), measuring instrument device (5), dissolved oxygen table (6), the output of gas meter (7) connects computer supervisory control system (4), frequency-converter device (3) and two-way connection of computer supervisory control system (4).
2, BAF dissolved oxygen intelligent Controlling System according to claim 1 is characterized in that gas meter (7) is a caloic formula mass-flow gas meter.
3, BAF dissolved oxygen intelligent Controlling System according to claim 1 and 2 is characterized in that dissolved oxygen table (6) is a LDO type dissolved oxygen table.
4, BAF dissolved oxygen intelligent Controlling System according to claim 1 and 2, it is characterized in that computer supervisory control system (4) is made up of programmable logic controller PLC and upper computer, and be provided with communication interface with power house distributed control system DCS and management at factory level infosystem MIS, PLC adopts AB ControlLogix series product, and upper computer is for grinding Chinese workers' industry control computer.
5, BAF dissolved oxygen intelligent Controlling System according to claim 3, it is characterized in that computer supervisory control system (4) is made up of programmable logic controller PLC and upper computer, and be provided with communication interface with power house distributed control system DCS and management at factory level infosystem MIS, PLC adopts AB ControlLogix series product, and upper computer is for grinding Chinese workers' industry control computer.
6, BAF dissolved oxygen intelligent Controlling System according to claim 1 and 2 is characterized in that measuring instrument device (5) comprises thermometer, under meter, COD table, ammonia nitrogen table, PH table, conductivity meter, turbidimeter and chlorine residue table.
7, BAF dissolved oxygen intelligent Controlling System according to claim 3 is characterized in that measuring instrument device (5) comprises thermometer, under meter, COD table, ammonia nitrogen table, PH table, conductivity meter, turbidimeter and chlorine residue table.
8, BAF dissolved oxygen intelligent Controlling System according to claim 4 is characterized in that measuring instrument device (5) comprises thermometer, under meter, COD table, ammonia nitrogen table, PH table, conductivity meter, turbidimeter and chlorine residue table.
9, BAF dissolved oxygen intelligent Controlling System according to claim 5 is characterized in that measuring instrument device (5) comprises thermometer, under meter, COD table, ammonia nitrogen table, PH table, conductivity meter, turbidimeter and chlorine residue table.
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| CN102491506A (en) * | 2011-12-02 | 2012-06-13 | 深圳达实智能股份有限公司 | Method and system for controlling aeration biofilter of sewage treatment plant |
| CN102778884A (en) * | 2012-08-09 | 2012-11-14 | 张涤非 | Intelligent control method and intelligent control system for sewage treatment plant |
| CN104238586A (en) * | 2014-09-30 | 2014-12-24 | 上海昊沧系统控制技术有限责任公司 | Method and system for ammonia nitrogen control in biological sewage treatment process |
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| CN107628691A (en) * | 2017-11-02 | 2018-01-26 | 浙江省能源与核技术应用研究院 | A kind of aeration waste water processing system and its multi-parameter fuzzy control method |
| CN108017193A (en) * | 2017-11-22 | 2018-05-11 | 南京大学 | A kind of denitrogenation filter back washing accurate control device and operation method |
| CN108996676A (en) * | 2018-09-18 | 2018-12-14 | 许东俊 | A kind of sewage aeration processing unit |
| CN110174839A (en) * | 2019-06-26 | 2019-08-27 | 中国科学院电工研究所无锡分所 | The Fuzzy PID Control System of DO value in sewage treatment aerobic tank |
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2008
- 2008-12-18 CN CN2008202144055U patent/CN201433129Y/en not_active Expired - Lifetime
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| CN102253653B (en) * | 2010-05-17 | 2016-04-27 | 上海超惠通风环保设备有限公司 | Submicron order (high-temperature acidic medium) Recovery Purifying automatic electrical control system |
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| CN102491506B (en) * | 2011-12-02 | 2014-04-09 | 深圳达实智能股份有限公司 | Method and system for controlling aeration biofilter of sewage treatment plant |
| CN102778884A (en) * | 2012-08-09 | 2012-11-14 | 张涤非 | Intelligent control method and intelligent control system for sewage treatment plant |
| CN104238586A (en) * | 2014-09-30 | 2014-12-24 | 上海昊沧系统控制技术有限责任公司 | Method and system for ammonia nitrogen control in biological sewage treatment process |
| CN105523628A (en) * | 2015-12-31 | 2016-04-27 | 天津泰丰兴业科技有限公司 | Energy-saving environment-friendly numerical control biological filter tank |
| CN106006945A (en) * | 2016-08-09 | 2016-10-12 | 湖南省煜城环保科技有限公司 | Parasitic filler biofilter for domestic sewage treatment |
| CN106249595A (en) * | 2016-09-19 | 2016-12-21 | 北京金控数据技术股份有限公司 | The control method for improving of a kind of environmental protection facility operational factor and device |
| CN107628691A (en) * | 2017-11-02 | 2018-01-26 | 浙江省能源与核技术应用研究院 | A kind of aeration waste water processing system and its multi-parameter fuzzy control method |
| CN107628691B (en) * | 2017-11-02 | 2024-02-20 | 浙江省能源与核技术应用研究院 | Aeration sewage treatment system and multi-parameter fuzzy control method thereof |
| CN108017193A (en) * | 2017-11-22 | 2018-05-11 | 南京大学 | A kind of denitrogenation filter back washing accurate control device and operation method |
| CN108017193B (en) * | 2017-11-22 | 2020-09-08 | 南京大学 | Back-flushing accurate control device for denitrification filter and operation method |
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| CN110174839A (en) * | 2019-06-26 | 2019-08-27 | 中国科学院电工研究所无锡分所 | The Fuzzy PID Control System of DO value in sewage treatment aerobic tank |
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