CN216623033U - Intelligent control system for wastewater treatment - Google Patents
Intelligent control system for wastewater treatment Download PDFInfo
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- CN216623033U CN216623033U CN202123338778.8U CN202123338778U CN216623033U CN 216623033 U CN216623033 U CN 216623033U CN 202123338778 U CN202123338778 U CN 202123338778U CN 216623033 U CN216623033 U CN 216623033U
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Abstract
The utility model discloses an intelligent control system for wastewater treatment, wherein a dissolved oxygen measuring instrument for detecting wastewater indexes is arranged in an aeration tank, an aeration pipe with one end extending outwards is arranged in the aeration tank, a first variable frequency fan for accelerating gas to enter the aeration tank is arranged on the aeration pipe, and the intelligent control system also comprises an upper computer for detecting the data of the dissolved oxygen measuring instrument and the flow rate of the aeration pipe; the on-site controller is used for receiving a signal from the upper computer and adjusting the working frequency of the driving device and the opening of the first electromagnetic valve; the PLC is used for remotely controlling the upper computer. For the high-concentration organic wastewater treatment industry, the intelligent control system can reduce the number of workers of the wastewater treatment system, improve the control accuracy and the fault response speed, and has important significance on the continuity and the stability of the upstream and downstream processes of the wastewater treatment system.
Description
Technical Field
The application relates to the technical field of wastewater treatment, in particular to an intelligent control system for wastewater treatment.
Background
In recent years, the national environment protection is more and more intensive, and the requirements on sewage discharge are more and more strict. The increasingly strict environmental emission standards not only require optimization of sewage treatment processes and improvement of the quality of environmental protection equipment, but also put higher demands on the control system of the biochemical and even the whole sewage system.
In some industrial sewage plants, the indexes of sewage can be judged only through test data, so that an operator can manually adjust the parameters of the equipment, the equipment cannot be intelligently controlled, and the purposes of energy conservation and emission reduction are achieved. Some small industrial sewage plants are not provided with detection instruments, operators cannot know the working state of a biochemical system in time, and the conditions of fluctuation of biochemical indexes and unqualified effluent occur.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present patent application aims to provide an intelligent control system for wastewater treatment, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme:
an intelligent control system for wastewater treatment comprises an aeration tank connected with a water inlet pipe and a water outlet pipe, wherein a sewage pump for discharging wastewater into the aeration tank is arranged on the water inlet pipe, a dissolved oxygen measuring instrument for detecting wastewater indexes is arranged in the aeration tank, an aeration pipe with one end extending outwards is arranged in the aeration tank, a first variable frequency fan for accelerating gas to enter the aeration tank is arranged on the aeration pipe, and a first electromagnetic valve for controlling the gas speed is also arranged on the aeration pipe;
the system also comprises an upper computer, a flow meter and a control system, wherein the upper computer is used for detecting the data of the dissolved oxygen measuring instrument and the flow of the aeration pipe;
the on-site controller is used for receiving a signal from the upper computer and adjusting the working frequency of the driving device and the opening of the first electromagnetic valve;
the system also comprises a PLC controller used for remotely controlling the upper computer.
Furthermore, the first electromagnetic valve is arranged on a section of the aeration pipe between the first variable frequency fan and the aeration tank, a first gas flow meter is arranged on a section of the aeration pipe between the first variable frequency fan and the first electromagnetic valve, and the first gas flow meter transmits a gas flow signal in the aeration pipe to the site controller and the upper computer.
Further, still be equipped with the activated sludge pipe that one end outwards extended in the aeration tank, install the activated sludge delivery pump on the activated sludge pipe, install the second solenoid valve on the activated sludge pipe is located one section between activated sludge delivery pump and the aeration tank, install first electromagnetic flowmeter on the activated sludge pipe is located one section between activated sludge delivery pump and the second solenoid valve, first electromagnetic flowmeter is with intraductal activated sludge flow signal transmission of activated sludge to site controller and host computer, the aperture through site controller control activated sludge delivery pump and second solenoid valve, install sludge concentration detector in the aeration tank, sludge concentration detector and host computer connection.
Furthermore, a steam pipe with one end extending outwards is further arranged in the aeration tank, a second variable frequency fan is mounted on the steam pipe, a third electromagnetic valve is mounted on a section of the steam pipe between the second variable frequency fan and the aeration tank, a second gas flowmeter is mounted on a section of the steam pipe between the second variable frequency fan and the third electromagnetic valve, the second gas flowmeter transmits a steam flow signal in the steam pipe to the site controller and the upper computer, the opening degree of the second variable frequency fan and the opening degree of the third electromagnetic valve are controlled through the site controller, a thermometer is mounted in the aeration tank, and the thermometer is connected with the upper computer.
Further, still be equipped with the outside alkali liquor pipe that extends of one end in the aeration tank, install alkali liquor delivery pump on the alkali liquor pipe, alkali liquor pipe is located and installs the fourth solenoid valve on one section between alkali liquor delivery pump and the aeration tank, alkali liquor pipe is located and installs the second electromagnetic flow meter on one section between alkali liquor delivery pump and the fourth solenoid valve, the second electromagnetic flow meter is with the intraductal active sludge flow signal transmission of alkali liquor to site controller and host computer, the aperture through site controller control alkali liquor delivery pump and fourth solenoid valve, install the alkalinity meter in the aeration tank, the alkalinity meter is connected with the host computer.
Further, the field controller is a controller of a SMART200 model, the upper computer is a notebook computer, and the PLC controller is a controller of a P71500 model.
Compared with the prior art, the utility model has the beneficial effects that: the intelligent control system for wastewater treatment can reduce the number of workers of the wastewater treatment system, improve the control accuracy, improve the fault response speed, ensure qualified effluent, is more environment-friendly, and has important significance on the continuity and stability of the upstream and downstream processes of the wastewater treatment system.
Drawings
FIG. 1 is a schematic view of the aeration control system of the present invention;
FIG. 2 is a schematic view of the activated sludge control system of the present invention;
FIG. 3 is a schematic diagram of the temperature control system of the present invention;
fig. 4 is a schematic diagram of the alkalinity control system of the present invention.
The reference numbers illustrate: the system comprises an aeration tank 1, a sewage pump 2, an on-site controller 3, an upper computer 4, a PLC 5, an aeration pipe 6, a first variable frequency fan 61, a first gas flowmeter 62, a dissolved oxygen measuring instrument 63, a first electromagnetic valve 64, an activated sludge pipe 7, an activated sludge delivery pump 71, a first electromagnetic flowmeter 72, a sludge concentration detector 73, a second electromagnetic valve 74, a steam pipe 8, a second variable frequency fan 81, a second gas flowmeter 82, a thermometer 83, a third electromagnetic valve 84, an alkali liquor pipe 9, an alkali liquor delivery pump 91, a second electromagnetic flowmeter 92, an alkali meter 93 and a fourth electromagnetic valve 94.
Detailed Description
The following embodiments of the present application are described by specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure of the present application. The present application is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the spirit of the present application. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1-4, the present invention provides the following technical solutions:
an intelligent control system for wastewater treatment, as shown in figure 1, comprises an aeration tank 1 connected with a water inlet pipe and a water outlet pipe, wherein a sewage pump 2 for discharging wastewater into the aeration tank 1 is installed on the water inlet pipe, a dissolved oxygen measuring instrument 63 for detecting wastewater indexes is arranged in the aeration tank 1, an aeration pipe 6 with one end extending outwards is arranged in the aeration tank 1, a first variable frequency fan 61 for accelerating gas into the aeration tank 1 is installed on the aeration pipe 6, and a first electromagnetic valve 64 for controlling the gas speed is also installed on the aeration pipe 6;
the upper computer 4 is used for detecting the data of the dissolved oxygen measuring instrument 63 and the flow of the aerator pipe 6;
the device also comprises a field controller 3 which receives signals from the upper computer 4 and adjusts the working frequency of the driving device and the opening degree of the first electromagnetic valve 64;
and the PLC 5 is used for remotely controlling the upper computer 4.
The field controller 3 is a controller of SMART200 model, the upper computer 4 is a notebook computer, and the PLC 5 is a controller of P71500 model.
The first electromagnetic valve 64 is arranged on a section of the aeration pipe 6 between the first variable frequency fan 61 and the aeration tank 1, the first gas flowmeter 62 is arranged on a section of the aeration pipe 6 between the first variable frequency fan 61 and the first electromagnetic valve 64, and the first gas flowmeter 62 transmits a gas flow signal in the aeration pipe 6 to the site controller 3 and the upper computer 4.
The upper computer 4 is a computer which stores a large amount of experience data, historical data and the change trend of the dissolved oxygen. The PLC 5 is connected with the upper computer 4 and provides a dissolved oxygen set value for the upper computer 4, and the dissolved oxygen set value is a reference value of the dissolved oxygen in the aeration tank 1. The dissolved oxygen measuring instrument 63 is connected to the upper computer 4, and is used for detecting the actual dissolved oxygen concentration in the aeration tank 1 and transmitting the detected dissolved oxygen concentration to the upper computer 4. The site controller 3 is connected with the upper computer 4, and the site controller 3 receives the control instruction of the upper computer 4 and controls the gas flow in the aeration tank 1.
Under the condition of stable system, assuming that the conditions of water inlet quantity, water quality, water temperature, sludge concentration and the like are kept unchanged, the outlet pressure and aeration quantity of the first variable frequency fan 61 are also unchanged, the oxygen consumption rate and the oxygen charging rate are basically balanced, and the dissolved oxygen concentration is stable at a given value; when the water quality, the water quantity, the sludge concentration and other external factors interfere in the sewage treatment process, for example, when water enters or sludge flows back, the intelligent oxygen supply system can calculate the gas flow value required by the dissolved oxygen concentration of the balance system according to the gas flow measured value, the dissolved oxygen set value, the dissolved oxygen measured value and the dissolved oxygen change trend in time, and output the data to the flow control loop for balancing and adjusting, so that the whole system can be recovered to be stable in time.
When the interference of water quality, water quantity and other external factors occurs in the wastewater treatment process, the intelligent oxygen supply system can calculate the gas flow value required by the dissolved oxygen concentration of the balance system in time according to the gas flow measured value, the dissolved oxygen set value, the dissolved oxygen measured value and the dissolved oxygen variation trend, and output the data to the field controller 3, and the balance gas is distributed and adjusted through the first variable frequency fan 61 and the first electromagnetic valve 64, so that the whole system can be recovered stably in time.
As another embodiment of the present invention, as shown in fig. 2, an activated sludge pipe 7 with one end extending outward is further disposed in the aeration tank 1, an activated sludge delivery pump 71 is mounted on the activated sludge pipe 7, a second electromagnetic valve 74 is mounted on a section of the activated sludge pipe 7 located between the activated sludge delivery pump 71 and the aeration tank 1, a first electromagnetic flow meter 72 is mounted on a section of the activated sludge pipe 7 located between the activated sludge delivery pump 71 and the second electromagnetic valve 74, the first electromagnetic flow meter 72 transmits an activated sludge flow signal in the activated sludge pipe 7 to the site controller 3 and the upper computer 4, the opening degrees of the activated sludge delivery pump 71 and the second electromagnetic valve 74 are controlled by the site controller 3, and a sludge concentration detector 73 is mounted in the aeration tank 1, and the sludge concentration detector 73 is connected with the upper computer 4.
The upper computer 4 is a computer in which a large amount of empirical data, historical data and the change trend of the sludge concentration are stored. The PLC 5 is connected with the upper computer 4 and provides a sludge concentration set value for the upper computer 4, and the sludge concentration set value is a reference value of the sludge concentration in the aeration tank 1. The sludge concentration monitor 73 is connected with the upper computer 4 and used for detecting the actual sludge concentration in the aeration tank 1 and transmitting the actual sludge concentration to the upper computer 4. The sludge reflux amount is determined by real-time sludge concentration calculation. The site controller 3 is connected with the upper computer 4, and the site controller 3 receives the control instruction of the upper computer 4 and controls the concentration of the sludge reflowing in the aeration tank 1.
As another embodiment of the present disclosure, as shown in fig. 3, a steam pipe 8 with one end extending outward is further disposed in the aeration tank 1, a second variable frequency fan 81 is mounted on the steam pipe 8, a third electromagnetic valve 84 is mounted on a section of the steam pipe 8 located between the second variable frequency fan 81 and the aeration tank 1, a second gas flow meter 82 is mounted on a section of the steam pipe 8 located between the second variable frequency fan 81 and the third electromagnetic valve 84, the second gas flow meter 82 transmits a steam flow signal in the steam pipe 8 to the site controller 3 and the upper computer 4, the opening degrees of the second variable frequency fan 81 and the third electromagnetic valve 84 are controlled by the site controller 3, a thermometer 83 is mounted in the aeration tank 1, and the thermometer 83 is connected with the upper computer 4.
The upper computer 4 is a computer which stores a large amount of experience data, historical data and temperature change trend. The PLC 5 is connected with the upper computer 4 and provides a temperature set value for the upper computer 4, and the temperature set value is a reference value of the temperature in the aeration tank 1. The thermometer 83 is connected to the upper computer 4 for detecting the actual temperature in the aeration tank 1 and transmitting the detected temperature to the upper computer 4. Vapor flow is determined by real-time temperature calculations. The site controller 3 is connected with the upper computer 4, and the site controller 3 receives the control instruction of the upper computer 4 and controls the temperature in the aeration tank 1.
Specifically, a plurality of water temperature monitoring points are arranged in the aeration tank 1, the water temperature directly influences the activity of the activated sludge, the temperature of the aeration tank 1 is controlled to be about 25-30 ℃, and the steam valve groups are controlled in a grouping mode through a multi-point thermometer, so that the temperature of the aeration tank 1 is accurately controlled, and the condition that the instantaneous water temperature is uneven is avoided.
As another embodiment of the present disclosure, as shown in fig. 4, an alkali liquor pipe 9 with one end extending outward is further disposed in the aeration tank 1, an alkali liquor delivery pump 91 is installed on the alkali liquor pipe 9, a fourth electromagnetic valve 94 is installed on a section of the alkali liquor pipe 9 located between the alkali liquor delivery pump 91 and the aeration tank 1, a second electromagnetic flow meter 92 is installed on a section of the alkali liquor pipe 9 located between the alkali liquor delivery pump 91 and the fourth electromagnetic valve 94, the second electromagnetic flow meter 92 transmits an activated sludge flow signal in the alkali liquor pipe 9 to the site controller 3 and the upper computer 4, the opening degrees of the alkali liquor delivery pump 91 and the fourth electromagnetic valve 94 are controlled by the site controller 3, an alkali meter 93 is installed in the aeration tank 1, and the alkali meter 93 is connected to the upper computer 4.
The pH value in the aeration tank 1 is controlled to be maintained at 7.5-8, and the alkalinity is controlled to be 120mg/L, so that a proper environment is provided for the normal work of nitrobacteria.
The upper computer 4 is a computer which stores a large amount of experience data, historical data and alkalinity variation trend. The PLC 5 is connected with the upper computer 4 and provides a alkalinity set value for the upper computer 4, and the alkalinity set value is a reference value of alkalinity in the aeration tank 1. The alkalinity meter 93 is connected with the upper computer 4 and used for detecting the actual alkalinity in the aeration tank 1 and transmitting the actual alkalinity to the upper computer 4. The lye flow was determined by real-time alkalinity calculations. The site controller 3 is connected with the upper computer 4, and the site controller 3 receives the control instruction of the upper computer 4 and controls the alkalinity in the aeration tank 1.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Those skilled in the art can modify and/or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (6)
1. The utility model provides a waste water treatment intelligent control system, is including aeration tank (1) that is connected with inlet tube and outlet pipe, installs sewage pump (2) with waste water drainage in aeration tank (1) on the inlet tube, its characterized in that: a dissolved oxygen measuring instrument (63) for detecting wastewater indexes is arranged in the aeration tank (1), an aeration pipe (6) with one end extending outwards is arranged in the aeration tank (1), a first variable frequency fan (61) for accelerating gas to enter the aeration tank (1) is arranged on the aeration pipe (6), and a first electromagnetic valve (64) for controlling the gas speed is also arranged on the aeration pipe (6);
the system also comprises an upper computer (4) for detecting the data of the dissolved oxygen measuring instrument (63) and the flow rate of the aeration pipe (6);
the device also comprises a field controller (3) which receives a signal from the upper computer (4) and adjusts the working frequency of the driving device and the opening degree of the first electromagnetic valve (64);
the device also comprises a PLC (programmable logic controller) controller (5) which is used for remotely controlling the upper computer (4).
2. The intelligent control system for wastewater treatment as claimed in claim 1, wherein: the first electromagnetic valve (64) is arranged on a section of the aeration pipe (6) between the first variable frequency fan (61) and the aeration tank (1), a first gas flowmeter (62) is arranged on a section of the aeration pipe (6) between the first variable frequency fan (61) and the first electromagnetic valve (64), and the first gas flowmeter (62) transmits a gas flow signal in the aeration pipe (6) to the on-site controller (3) and the upper computer (4).
3. The intelligent control system for wastewater treatment as claimed in claim 2, wherein: an activated sludge pipe (7) with one end extending outwards is further arranged in the aeration tank (1), an activated sludge delivery pump (71) is installed on the activated sludge pipe (7), a second electromagnetic valve (74) is installed on a section, located between the activated sludge delivery pump (71) and the aeration tank (1), of the activated sludge pipe (7), a first electromagnetic flow meter (72) is installed on a section, located between the activated sludge delivery pump (71) and the second electromagnetic valve (74), of the activated sludge pipe (7), the first electromagnetic flow meter (72) transmits an activated sludge flow signal in the activated sludge pipe (7) to the field controller (3) and the upper computer (4), the opening degrees of the activated sludge delivery pump (71) and the second electromagnetic valve (74) are controlled by the field controller (3), a sludge concentration detector (73) is installed in the aeration tank (1), and the sludge concentration detector (73) is connected with the upper computer (4).
4. The intelligent control system for wastewater treatment as claimed in claim 2, wherein: still be equipped with steam pipe (8) that one end outwards extended in aeration tank (1), install second frequency conversion fan (81) on steam pipe (8), steam pipe (8) are located and install third solenoid valve (84) on the section between second frequency conversion fan (81) and aeration tank (1), steam pipe (8) are located and install second gas flowmeter (82) on the section between second frequency conversion fan (81) and third solenoid valve (84), steam flow signal transmission to site controller (3) and host computer (4) in steam pipe (8) are gone up in second gas flowmeter (82), the aperture of second frequency conversion fan (81) and third solenoid valve (84) is controlled through site controller (3), install thermometer (83) in aeration tank (1), thermometer (83) are connected with host computer (4).
5. The intelligent control system for wastewater treatment according to claim 2, wherein: still be equipped with alkali liquor pipe (9) that one end outwards extended in aeration tank (1), install alkali lye delivery pump (91) on alkali liquor pipe (9), alkali liquor pipe (9) are located and install fourth solenoid valve (94) on one section between alkali lye delivery pump (91) and aeration tank (1), alkali liquor pipe (9) are located and install second electromagnetic flowmeter (92) on one section between alkali lye delivery pump (91) and fourth solenoid valve (94), active sludge flow signal transmission to site controller (3) and host computer (4) in second electromagnetic flowmeter (92) will alkali liquor pipe (9), the aperture through site controller (3) control alkali liquor delivery pump (91) and fourth solenoid valve (94), install alkalinity meter (93) in aeration tank (1), alkalinity meter (93) are connected with host computer (4).
6. An intelligent control system for wastewater treatment according to any of claims 1-5, characterized in that: the field controller (3) is a controller of SMART200 type, the upper computer (4) is a notebook computer, and the PLC controller (5) is a controller of P71500 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123338778.8U CN216623033U (en) | 2021-12-27 | 2021-12-27 | Intelligent control system for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123338778.8U CN216623033U (en) | 2021-12-27 | 2021-12-27 | Intelligent control system for wastewater treatment |
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| Publication Number | Publication Date |
|---|---|
| CN216623033U true CN216623033U (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123338778.8U Active CN216623033U (en) | 2021-12-27 | 2021-12-27 | Intelligent control system for wastewater treatment |
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| CN (1) | CN216623033U (en) |
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2021
- 2021-12-27 CN CN202123338778.8U patent/CN216623033U/en active Active
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