CN202054663U - Dissolved oxygen automatic control system for sewage water biological pool - Google Patents
Dissolved oxygen automatic control system for sewage water biological pool Download PDFInfo
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- CN202054663U CN202054663U CN2011201663117U CN201120166311U CN202054663U CN 202054663 U CN202054663 U CN 202054663U CN 2011201663117 U CN2011201663117 U CN 2011201663117U CN 201120166311 U CN201120166311 U CN 201120166311U CN 202054663 U CN202054663 U CN 202054663U
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- dissolved oxygen
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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
The utility model discloses a dissolved oxygen automatic control system for a sewage water biological pool, which comprises the biological pool, an inflow water quality analysis meter, an inflow water flow meter, a dissolved oxygen tester, a biological pool liquid level meter, an air blower, an air inlet control valve, an aeration flow meter, an air blower frequency converter, a programmable logic controller and a model-free self-adaptive controller. The inflow water quality analysis meter and the inflow water flow meter are arranged on an inflow water pipeline of the biological pool, and a probe of the dissolved oxygen tester and a probe of the biological pool liquid level meter are positioned in the biological pool. The air blower frequency converter, the air blower, the aeration flow meter and the air inlet control valve are sequentially connected with an air inlet end of the biological pool. The programmable logic controller is connected with the inflow water quality analysis meter, the inflow water flow meter, the dissolved oxygen tester, the biological pool liquid level meter, the air blower, the aeration flow meter and the air inlet control valve. The model-free self-adaptive controller is connected with the programmable logic controller. The dissolved oxygen automatic control system for the sewage water biological pool enables the dissolved oxygen quantity in the biological pool to keep stable, and can reduce energy consumption during the process of sewage water treatment.
Description
Technical field
The utility model relates to dirty wastewater biochemical process field, refers to a kind of dirty wastewater biological pond dissolved oxygen automatic control system particularly.
Background technology
In dirty waste water treatment process, biological tank is very important in a sewage disposal link, also is the part of energy consumption maximum in the entire sewage treating processes.The concentration of dissolved oxygen is important parameters very in the biological tank in the biological tank, and it has reflected the active degree of microorganisms in water, thereby the control of dissolved oxygen concentration directly influences the water quality of water outlet and the energy consumption of dirty wastewater treatment.And the key of dissolved oxygen control is to select suitable biological tank air output in the biological tank, makes dissolved oxygen in the water can not only satisfy the needs of microorganism growth, can also make it remain on the low value of trying one's best of permission.
At present, traditional PID (Proportion Integration Differentiation, the proportion integration differentiation) control of many employings in the automatic control system of dirty wastewater biological pond, it is a kind of classical control method that relies on theoretical model to set up.Yet, on the one hand, changeable and the complicacy biological treatment system biochemical reaction of sewage quality has determined Sewage treatment systems to have large time delay, non-linear, randomness and multivariable characteristics, and traditional PID control method only can be controlled the system and the stational system of substantially linear, can not control effectively non-linear, the time change, coupling, time lag, disturb complex processes big and that uncertain factor is many, thereby traditional PID control method is limited to the controllability of water conditioning efficient; On the other hand, because the model that the biological treatment process of sewage is set up is empirical, with good conditionsi, thereby, the simple classical control method that relies on theoretical model to set up can not satisfy the needs that dissolved oxygen is regulated well, gas blower and valve regulated are frequent, overshoot is big thereby cause, make reduce equipment life, energy consumption is too high.
Summary of the invention
The purpose of this utility model will provide a kind of dirty wastewater biological pond dissolved oxygen automatic control system exactly, can not only make the dissolved oxygen amount in the biological tank keep stable, and can reduce the energy consumption in the sewage treatment process.
For achieving the above object, the dirty wastewater biological pond dissolved oxygen automatic control system that the utility model is designed, comprise biological tank, the influent quality analyser, the flooding velocity meter, dissolved oxygen meter, the biological tank liquidometer, gas blower, air intake control valve, the aeration under meter, the blower variable frequency device, model-free adaptive controller and programmable logic controller, the influent quality analyser is located on the suction culvert of biological tank, the flooding velocity meter is located on the suction culvert between influent quality analyser and the biological tank feed-water end, the probe of the probe of dissolved oxygen meter and biological tank liquidometer is located in the biological tank, gas blower, the aeration under meter, the inlet end of air intake control valve and biological tank links to each other successively, the blower variable frequency device links to each other with gas blower by cable, the data gathering end of programmable logic controller and influent quality analyser, the flooding velocity meter, dissolved oxygen meter, the biological tank liquidometer, gas blower, the aeration under meter links to each other with air intake control valve, the output terminal of programmable logic controller links to each other with the blower variable frequency device by signal wire, be used for the influent quality analyser that to gather, the flooding velocity meter, dissolved oxygen meter, the biological tank liquidometer, gas blower, the take off data of aeration under meter and air intake control valve is carried out filtering, show filtered described take off data and make form and trend map by described take off data, send filtered described take off data, and receive and send the gas blower controlled frequency to the blower variable frequency device, model-free adaptive controller links to each other with programmable logic controller, be used to receive the influent quality analyser that programmable logic controller is gathered, the flooding velocity meter, dissolved oxygen meter, the take off data of biological tank liquidometer and aeration under meter, and the dissolved oxygen amount set(ting)value that is provided with in the dissolved oxygen value that the dissolved oxygen meter that receives is measured and the model-free adaptive controller compares and obtains feeding back difference, adopts the model-free adaption control algolithm to the feedback difference is calculated and combination receives the influent quality analyser as feedforward data, the flooding velocity meter, the variation tendency output drum blower fan controlled frequency of the take off data of biological tank liquidometer and aeration under meter is given programmable logic controller.
Preferably, the influent quality analyser comprises chemical oxygen demand (COD) analyser, nh 3-n analyser, turbidimetric apparatus and potential of hydrogen/temperature measuring set, and the probe of chemical oxygen demand (COD) analyser, nh 3-n analyser, turbidimetric apparatus and potential of hydrogen/temperature measuring set is connected with the data gathering end of biological tank suction culvert and programmable logic controller respectively with transmitter.
Preferably, influent quality analyser, flooding velocity meter, dissolved oxygen meter, biological tank liquidometer, gas blower, aeration under meter and air intake control valve are connected with the input/output interface of programmable logic controller.
Preferably, model-free adaptive controller is connected with programmable logic controller by the Modbus bus.
Advantage of the present utility model is:
1, because the tandem control texture that dirty wastewater biological of the present utility model pond dissolved oxygen automatic control system has adopted feedforward and feedback to combine, when influent quality analyser as feedforward data, the flooding velocity meter, when the take off data of biological tank liquidometer and aeration under meter changes, model-free adaptive controller can judge and adjust variation very soon, change the rotating speed of gas blower rapidly by the blower variable frequency device, variation is not also fed through in the biological tank just to be overcome before the dissolved oxygen content, thereby make the dissolved oxygen content in the biological tank maintain set(ting)value, thereby, dirty wastewater biological of the present utility model pond automatic control system can not only effectively solve the problem of the large time delay of biological tank aeration process, be applicable to Large-lag System, and can save energy consumption that aeration is provided and the effect that improves sewage disposal;
2, owing to adopt the model-free adaption device that the feedback difference is handled in the dissolved oxygen automatic control system of dirty wastewater biological of the present utility model pond, thereby, can realize the adaptive control and the structure adaptive control of controlled system parameter, thereby efficiently solve the nonlinear problem of biological tank aeration process, be applicable to non-linear system;
3, simple in structure, easy to operate, the production efficiency height can be applicable to newly-built Sewage Plant, also can be applicable to the transformation of existing Sewage Plant.
Description of drawings
Fig. 1 is the structural representation of the dirty wastewater biological of the utility model pond dissolved oxygen automatic control system.
Fig. 2 is the fundamental diagram of the dirty wastewater biological of the utility model pond dissolved oxygen automatic control system.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, the dirty wastewater biological pond dissolved oxygen automatic control system of present embodiment comprises biological tank 10, influent quality analyser 20, flooding velocity meter 30, dissolved oxygen meter 40, biological tank liquidometer 50, gas blower 60, blower variable frequency device (Frequency Converter, FC) 61, aeration under meter 70, air intake control valve 80, programmable logic controller (Programmable Logic Controller, PLC) 90 and model-free adaptive controller (Model-free Adaptive Controller, MFAC) 100.
Particularly, influent quality analyser 20 is located on the suction culvert of biological tank 10.Flooding velocity meter 30 is located on the suction culvert between influent quality analyser 20 and biological tank 10 feed-water ends.The probe of the probe of dissolved oxygen meter 40 and biological tank liquidometer 50 is located in the biological tank 10.The inlet end of biological tank 10 is provided with air intake control valve 80, and the output terminal of gas blower 60 links to each other with air intake control valve 80, and aeration under meter 70 is located on the pipeline between gas blower 60 and the air intake control valve 80, and blower variable frequency device 61 links to each other with gas blower 60 by cable.
The data gathering end of programmable logic controller 90 links to each other with influent quality analyser 20, flooding velocity meter 30, dissolved oxygen meter 40, biological tank liquidometer 50, aeration under meter 70 and air intake control valve 80 by signal wire, and the output terminal of programmable logic controller 90 links to each other with blower variable frequency device 61 by signal wire.Programmable logic controller 90 is as the core of automatic control system, the take off data that is used for influent quality analyser 20, flooding velocity meter 30, dissolved oxygen meter 40, biological tank liquidometer 50, gas blower 60, aeration under meter 70 and the air intake control valve 80 that will gather is carried out filtering, show filtered described take off data and make form and trend map, and send filtered described take off data by described take off data.Simultaneously, programmable logic controller 90 also receives the gas blower controlled frequency, and the gas blower controlled frequency is sent to blower variable frequency device 61, with the rotating speed of control gas blower 60.Adopt programmable logic controller 90 to gather above-mentioned take off data and be very easy to, and cheap.
Model-free adaptive controller 100 links to each other by the Modbus bus with programmable logic controller 90.Model-free adaptive controller 100 is used to receive the influent quality analyser 20 that programmable logic controller 90 is gathered, flooding velocity meter 30, dissolved oxygen meter 40, the take off data of biological tank liquidometer 50 and aeration under meter 70, and the dissolved oxygen amount set(ting)values that are provided with in the dissolved oxygen value that the dissolved oxygen meter that receives 40 is measured and the model-free adaptive controller 100 compare and obtain feeding back difference, adopt the model-free adaption control algolithm to the feedback difference is calculated and combination receives the influent quality analyser 20 as feedforward data, flooding velocity meter 30, the variation tendency output drum blower fan controlled frequency of the take off data of biological tank liquidometer 50 and aeration under meter 70 is given programmable logic controller 90.
At length, influent quality analyser 20 comprises chemical oxygen demand (COD) analyser 21, nh 3-n analyser 22, turbidimetric apparatus 23 and potential of hydrogen/temperature measuring set 24, and the probe of chemical oxygen demand (COD) analyser 21, nh 3-n analyser 22, turbidimetric apparatus 23 and potential of hydrogen/temperature measuring set 24 is connected with the input/output interface of biological tank 10 suction culverts and programmable logic controller 90 respectively with transmitter.
Describe the principle of work of the dirty wastewater biological of the utility model pond automatic control system in detail below in conjunction with Fig. 1-2.At first, the take off data that programmable logic controller 90 is gathered influent quality analyser 20, flooding velocity meter 30, dissolved oxygen meter 40, biological tank liquidometer 50 and aeration under meter 70, and after the take off data that collects carried out filtering, send to model-free adaptive controller 100 by the Modbus bus, wherein, the dissolved oxygen amount that dissolved oxygen meter 40 is measured is feedback signal c (t), and the measurement data signals of influent quality analyser 20, flooding velocity meter 30, biological tank liquidometer 50 and aeration under meter 70 is as feed-forward signal f (t).Programmable logic controller 90 is by the signal of transmitters 41 in the collection dissolved oxygen meter 40, thus the feedback signal of collecting.After model-free adaptive controller 100 receives above-mentioned measurement data signals, the dissolved oxygen amount set(ting)value r (t) that are provided with in the dissolved oxygen value c (t) that the dissolved oxygen meter that receives 40 is measured and the model-free adaptive controller 100 compare and obtain feeding back difference e (t), and adopt the model-free adaption control algolithm that feedback difference e (t) is calculated, the variation tendency of the feed-forward signal f (t) that combination simultaneously receives, export a gas blower controlled frequency, and send to programmable logic controller 90 by the Modbus bus.Then, programmable logic controller 90 sends to blower variable frequency device 61 with described gas blower controlled frequency, with the rotating speed of control gas blower 60, and then the aeration rate of adjusting biological tank 10.
Claims (4)
1. dirty wastewater biological pond dissolved oxygen automatic control system, comprise: biological tank (10), influent quality analyser (20), flooding velocity meter (30), dissolved oxygen meter (40), biological tank liquidometer (50), gas blower (60), air intake control valve (80), aeration under meter (70) and blower variable frequency device (61), influent quality analyser (20) is located on the suction culvert of biological tank (10), flooding velocity meter (30) is located on the suction culvert between influent quality analyser (20) and biological tank (10) feed-water end, the probe of the probe of dissolved oxygen meter (40) and biological tank liquidometer (50) is located in the biological tank (10), gas blower (60), aeration under meter (70), air intake control valve (80) links to each other successively with the inlet end of biological tank (10), blower variable frequency device (61) links to each other with gas blower (60) by cable, it is characterized in that:
It also comprises programmable logic controller (90) and model-free adaptive controller (100);
The data gathering end of described programmable logic controller (90) and influent quality analyser (20), flooding velocity meter (30), dissolved oxygen meter (40), biological tank liquidometer (50), gas blower (60), aeration under meter (70) links to each other with air intake control valve (80), the output terminal of programmable logic controller (90) links to each other with blower variable frequency device (61) by signal wire, be used for the influent quality analyser (20) that to gather, flooding velocity meter (30), dissolved oxygen meter (40), biological tank liquidometer (50), gas blower (60), the take off data of aeration under meter (70) and air intake control valve (80) is carried out filtering, show filtered described take off data and make form and trend map by described take off data, send filtered described take off data, and receive and send the gas blower controlled frequency to blower variable frequency device (61);
Described model-free adaptive controller (100), link to each other with programmable logic controller (90), be used to receive the influent quality analyser (20) that programmable logic controller (90) is gathered, flooding velocity meter (30), dissolved oxygen meter (40), the take off data of biological tank liquidometer (50) and aeration under meter (70), and the dissolved oxygen amount set(ting)value that is provided with in the dissolved oxygen value that the dissolved oxygen meter (40) that receives is measured and the model-free adaptive controller (100) compares and obtains feeding back difference, adopts the model-free adaption control algolithm to the feedback difference is calculated and combination receives the influent quality analyser (20) as feedforward data, flooding velocity meter (30), the variation tendency output drum blower fan controlled frequency of the take off data of biological tank liquidometer (50) and aeration under meter (70) is given programmable logic controller (90).
2. dirty wastewater biological according to claim 1 pond dissolved oxygen automatic control system, it is characterized in that: described influent quality analyser (20) comprises chemical oxygen demand (COD) analyser (21), nh 3-n analyser (22), turbidimetric apparatus (23) and potential of hydrogen/temperature measuring set (24), and the probe of chemical oxygen demand (COD) analyser (21), nh 3-n analyser (22), turbidimetric apparatus (23) and potential of hydrogen/temperature measuring set (24) is connected with the data gathering end of biological tank (10) suction culvert and programmable logic controller (90) respectively with transmitter.
3. dirty wastewater biological according to claim 1 and 2 pond dissolved oxygen automatic control system is characterized in that: described influent quality analyser (20), flooding velocity meter (30), dissolved oxygen meter (40), biological tank liquidometer (50), gas blower (60), aeration under meter (70) and the input/output interface of air intake control valve (80) with programmable logic controller (90) are connected.
4. dirty wastewater biological according to claim 1 and 2 pond dissolved oxygen automatic control system is characterized in that: described model-free adaptive controller (100) is connected with programmable logic controller (90) by the Modbus bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201663117U CN202054663U (en) | 2011-05-24 | 2011-05-24 | Dissolved oxygen automatic control system for sewage water biological pool |
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| CN2011201663117U CN202054663U (en) | 2011-05-24 | 2011-05-24 | Dissolved oxygen automatic control system for sewage water biological pool |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863077A (en) * | 2012-08-24 | 2013-01-09 | 华南理工大学 | Automatic monitoring system for treatment of papermaking sewage with activated sludge process and control method thereof |
| CN103553206A (en) * | 2013-10-18 | 2014-02-05 | 上海市政工程设计研究总院（集团）有限公司 | Control system and control method for low-concentration dissolved oxygen in biochemical reaction basin |
| CN103676647A (en) * | 2012-09-12 | 2014-03-26 | 南通中电能源科技有限公司 | Sewage aeration control device |
| CN103663674A (en) * | 2013-12-18 | 2014-03-26 | 清华大学 | Real-time control device and control method for blast aeration process of 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 |
| CN104671462A (en) * | 2015-02-02 | 2015-06-03 | 北京金控自动化技术有限公司 | Sewage treatment energy saving control method and control system based on bivariate two-dimensional table |
| CN108319150A (en) * | 2018-04-25 | 2018-07-24 | 山东交通学院 | The full running state information perception of bionethanation system and optimal control system and method |
| CN109143840A (en) * | 2018-09-18 | 2019-01-04 | 湖南柿竹园有色金属有限责任公司 | A kind of mine tailing wastewater processing dosing closed loop uniform recipe design technology |
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2011
- 2011-05-24 CN CN2011201663117U patent/CN202054663U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863077A (en) * | 2012-08-24 | 2013-01-09 | 华南理工大学 | Automatic monitoring system for treatment of papermaking sewage with activated sludge process and control method thereof |
| CN103676647A (en) * | 2012-09-12 | 2014-03-26 | 南通中电能源科技有限公司 | Sewage aeration control device |
| CN103553206A (en) * | 2013-10-18 | 2014-02-05 | 上海市政工程设计研究总院（集团）有限公司 | Control system and control method for low-concentration dissolved oxygen in biochemical reaction basin |
| CN103663674A (en) * | 2013-12-18 | 2014-03-26 | 清华大学 | Real-time control device and control method for blast aeration process of sewage treatment plant |
| CN103663674B (en) * | 2013-12-18 | 2015-05-20 | 清华大学 | Control method of real-time control device for blast aeration process of 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 |
| CN104671462A (en) * | 2015-02-02 | 2015-06-03 | 北京金控自动化技术有限公司 | Sewage treatment energy saving control method and control system based on bivariate two-dimensional table |
| CN104671462B (en) * | 2015-02-02 | 2016-05-04 | 北京金控数据技术股份有限公司 | Sewage disposal energy-saving control method and control system based on bivariate bivariate table |
| CN108319150A (en) * | 2018-04-25 | 2018-07-24 | 山东交通学院 | The full running state information perception of bionethanation system and optimal control system and method |
| CN108319150B (en) * | 2018-04-25 | 2023-05-23 | 山东交通学院 | Full-running state information sensing and optimal control system and method for biogas system |
| CN109143840A (en) * | 2018-09-18 | 2019-01-04 | 湖南柿竹园有色金属有限责任公司 | A kind of mine tailing wastewater processing dosing closed loop uniform recipe design technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KAIDI WATER SERVICE CO., LTD., WUHAN Free format text: FORMER NAME: WUHAN KAIDI WATER TECHNOLOGY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430074 Hubei province Wuhan city East Lake high tech Park Road two Guanshan 1 international business center two building 1 Patentee after: Kaidi Water Service Co., Ltd., Wuhan Address before: 430074 Hubei province Wuhan city East Lake high tech Park Road two Guanshan 1 international business center two building 1 Patentee before: Wuhan Kaidi Water Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20170524 |