CN115159645B - Method, device and equipment for dosing self-calibration based on historical data - Google Patents
Method, device and equipment for dosing self-calibration based on historical data Download PDFInfo
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- CN115159645B CN115159645B CN202210587474.5A CN202210587474A CN115159645B CN 115159645 B CN115159645 B CN 115159645B CN 202210587474 A CN202210587474 A CN 202210587474A CN 115159645 B CN115159645 B CN 115159645B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 230000004044 response Effects 0.000 claims abstract description 5
- 239000003814 drug Substances 0.000 claims description 33
- 238000004590 computer program Methods 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims 1
- 239000010865 sewage Substances 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 5
- 229940079593 drug Drugs 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses a method, a device and equipment for dosing self-calibration based on historical data, wherein the method specifically comprises the following steps: determining the dosing flow by acquiring the water inlet parameters of the reaction tank; according to the dosing flow, the dosing frequency corresponding to the dosing flow is regulated in a characteristic database, and the dosing frequency to the reaction tank is controlled and regulated; calculating a dosing calibration factor in response to a drop in the liquid level in the dosing tank; and updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient, so as to realize accurate control and adjustment of dosing.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method, a device, equipment and a storage medium for dosing self-calibration based on historical data.
Background
With the rapid development of water treatment technology in recent years, magnetic separation technology is widely researched and applied in the water treatment industry. In the existing magnetic separation type water treatment process, the process of adding a medicament into sewage to cause the impurities to be coagulated and flocculated is needed, so that the aim of purifying the sewage is fulfilled.
In the existing sewage treatment system, when the sewage inflow of the system fluctuates or the actual dosing amount deviates from a theoretical requirement value due to blockage, abrasion and the like of a dosing pump, the dosing amount cannot be adjusted in time by the system, and most of the sewage treatment systems are manually adjusted after manual calculation when the effluent quality does not meet the requirement. Therefore, the defects of lag adjustment, unstable effluent quality and the like exist; meanwhile, due to manual calculation, the equipment operation condition is not considered enough, the condition of insufficient dosing or waste exists, and the quality of effluent and the operation cost are greatly influenced.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a method, a device, equipment and a storage medium for dosing self-calibration based on historical data, and the dosing amount is timely and accurately adjusted according to real-time working conditions.
The invention provides a dosing self-calibration method based on historical data, which comprises the following steps:
establishing a characteristic database, wherein the characteristic database comprises a corresponding relation between dosing flow parameters and dosing frequency parameters;
acquiring real-time inflow and outflow water quality parameters of a reaction tank, and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
and according to the real-time dosing flow parameters, a dosing frequency parameter corresponding to the dosing flow is regulated in a characteristic database, and the dosing frequency of the reaction tank is controlled and regulated according to the dosing frequency parameter.
Preferably, the method further comprises:
calculating a dosing calibration factor in response to a drop in the liquid level in the dosing tank; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period that the liquid level of the dosing tank drops by a preset calibration height;
and updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient.
Preferably, the calculating the dosing calibration coefficient specifically includes:
recording the real-time dosing frequency f in the period of the liquid level drop calibration height of the dosing tank n Determining the corresponding instantaneous flow Q of each dosing frequency i Total time of use t corresponding to different dosing frequencies i Acquiring the actual volume of the liquid medicine flowing out in the calibrated height period
Determining the theoretical volume V of the liquid medicine flowing out in the calibration height period according to the cross-sectional area of the medicine adding box and the calibration height value 0 ；
Determining a dosing calibration coefficient n=v/V according to the ratio of the actual volume of the liquid medicine flowing out of the calibration height period to the theoretical volume 0 。
Preferably, the adjusting the dosing flow rate of the next calibration height period according to the dosing calibration coefficient specifically includes: dosing flow corresponding to each dosing frequency after adjustment = dosing flow before adjustment.
Preferably, the preset calibration height value is in direct proportion to the cross section area of the dosing box.
The invention also provides a device for dosing self-calibration based on historical data, which comprises:
the characteristic database is used for storing the corresponding relation between the dosing flow and the dosing frequency;
the parameter acquisition module is used for acquiring real-time inflow and outflow water quality parameters of the reaction tank and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
and the adjusting module is used for adjusting the dosing frequency corresponding to the dosing flow in the characteristic database according to the dosing flow, and controlling and adjusting the dosing frequency to the reaction tank.
Preferably, the apparatus further comprises:
the calculating module is used for responding to the decrease of the liquid level in the dosing tank and calculating a dosing calibration coefficient; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period of the liquid level decreasing calibration height of the dosing tank;
and the updating module is used for updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient.
The invention also provides a device for dosing self-calibration based on historical data, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the method when executing the computer program.
The invention also proposes a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the method described above.
According to the invention, by establishing the characteristic database of the dosing system, continuously measuring and calculating historical dosing operation data and combining a mode of calculating dosing calibration coefficients, the characteristic database is continuously updated according to the operation conditions, so that the accurate control of dosing is realized.
Drawings
Fig. 1 is a flow chart of a method for dosing self-calibration based on historical data according to the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for dosing self-calibration based on historical data according to an embodiment of the present invention.
Referring to fig. 1, the invention provides a method for dosing self-calibration based on historical data, which comprises the following steps:
step S1: establishing a characteristic database, wherein the characteristic database comprises a corresponding relation between dosing flow and dosing frequency;
the characteristic database is a database which is established in advance according to the characteristic of the dosing pump and corresponds to the dosing flow, wherein the dosing frequency represents the operating frequency of the dosing pump. When the equipment is started, a group of values are manually tested to be initial values, the group of values can be regarded as the previous group of values before the equipment is operated, and meanwhile, the corresponding relation between different dosing flow rates and dosing frequencies in the characteristic database is continuously updated according to real-time data in the operation of the equipment in the operation process of the equipment.
Step S2: acquiring real-time inflow and outflow water quality parameters of a reaction tank, and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
step S3: according to the real-time dosing flow, a dosing frequency parameter corresponding to the dosing flow is adjusted in a characteristic database, and the dosing frequency of the reaction tank is controlled and adjusted;
it should be noted that during the normal operation of the system, the above steps can realize the adjustment of the dosing amount of the sewage treatment system according to the historical data in the characteristic database, and the dosing pump may have a certain degree of blockage or other problems due to the influence of factors such as the viscosity of the medicament, so that the corresponding relationship between the dosing flow and the dosing frequency in the characteristic database has errors, so that the embodiment of the invention further provides an optimization scheme, which specifically comprises:
step S4: calculating a dosing calibration factor in response to a drop in the liquid level in the dosing tank; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period that the liquid level of the dosing tank drops by a preset calibration height;
specifically, the calculating of the dosing calibration coefficient specifically includes:
recording the real-time dosing frequency f in the period of the liquid level drop calibration height of the dosing tank n Determining the dosing flow Q corresponding to each dosing frequency i Total time of use t corresponding to different dosing frequencies i Acquiring the actual volume of the liquid medicine flowing out in the calibrated height period
Determining the theoretical volume V of the liquid medicine flowing out in the calibration height period according to the cross-sectional area of the medicine adding box and the calibration height value 0 ；
Determining a dosing calibration coefficient n=v/V according to the ratio of the actual volume of the liquid medicine flowing out of the calibration height period to the theoretical volume 0 。
It should be noted that the preset calibration height value is in a proportional relationship with the cross-sectional area of the dosing box. The larger the general sectional area is, the larger the calibrated height of the sample is, and the larger the calibrated height of the sample is, the more accurate the flow is finally calibrated.
When the system dissolves medicines, if the liquid level of the medicine adding box rises, self-calibration sampling is stopped, after the liquid level stops rising, the self-calibration program is restarted, and relevant data are obtained in real time in response to the liquid level in the medicine adding box falling.
Step S5: and updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient.
Specifically, the adjusted dosing flow rate=the dosing flow rate before adjustment corresponding to different frequencies.
It should be noted that, in the embodiment of the invention, the calculation is performed according to the period that the dosing box descends by one calibration height to one calibration height, and the characteristic database is continuously updated.
It should be noted that, during the normal operation of the reaction tank water inflow and the dosing pump, the actual dosing volume is basically equal to the theoretical dosing volume, and the new calibration coefficient n is basically about 1. When the viscosity of the medicament is influenced and the medicament adding pump is blocked to a certain extent, the actual medicament adding volume is smaller than the theoretical medicament adding volume through self-calibration calculation.
In some specific embodiments, the instantaneous flow of the reaction tank inlet water in the sewage treatment system is 60m 3 And/h, wherein the dosing flow of the flocculant is 0.6L/min, and the corresponding dosing pump operation frequency is 25Hz. When the instantaneous flow rate of the inflow water rises to 80m 3 And (3) when the system calculates and calculates that the dosing flow of the flocculant is adjusted to 0.8L/min, and the operating frequency of the corresponding dosing pump is searched from the characteristic database to be 30Hz, so that the operating state of the dosing pump is adjusted, the dosing amount is increased in time, and the water quality of the discharged water is ensured.
In some specific embodiments, the instantaneous flow of water into the reaction tank of the sewage treatment system is 60m 3 And/h, the dosing flow of the flocculant is 0.6L/min, and the corresponding dosing pump operation frequency is 25Hz. However, due to the influence of the viscosity of the medicament, the medicament adding pump is blocked to a certain extent, the actual medicament adding volume is smaller than the theoretical medicament adding volume by self-calibration calculation, and the medicament adding calibration coefficient is calculated to be 0.75 by the system through the method provided by the embodiment. And recording a characteristic database, and multiplying the dosing flow corresponding to all the running frequencies by 0.75 by summarizing the characteristic database. For example, the dosing flow corresponding to the original 25Hz is 0.6L/min, and the dosing flow is reduced to 0.45L/min after calibration; and the drug adding flow rate corresponding to the original 30Hz is reduced to 0.8L/min to 0.6L/min. Therefore, after the self-calibration of the wheel is completed, the operation frequency of the dosing pump is adjusted to be 30Hz, and the dosing amount is ensured to be maintained at 0.6L/min. From this, it can be seen that the dosage is reduced due to the blockage of the dosing pump, and is obtained by increasing the operating frequency of the dosing pump after the completion of the self-calibration of the roundAnd (3) correcting, namely adjusting the sewage treatment effect of the system and improving the quality of effluent.
The embodiment of the invention also provides a device for dosing self-calibration based on historical data, which comprises:
the characteristic database is used for storing the corresponding relation between the dosing flow and the dosing frequency;
the parameter acquisition module is used for acquiring real-time inflow and outflow water quality parameters of the reaction tank and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
and the adjusting module is used for adjusting the dosing frequency corresponding to the dosing flow in the characteristic database according to the dosing flow, and controlling and adjusting the dosing frequency to the reaction tank.
The calculating module is used for responding to the decrease of the liquid level in the dosing tank and calculating a dosing calibration coefficient; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period of the liquid level decreasing calibration height of the dosing tank;
and the updating module is used for updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient.
The embodiment of the invention also provides a device for dosing self-calibration based on historical data, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the method when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, implements the steps of the method described above.
In the embodiment of the invention, a characteristic database of the dosing system is established, and the accurate control of dosing is realized by continuously calculating historical dosing operation data and calculating dosing calibration coefficients and continuously updating the characteristic database according to the operation conditions.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. A method for dosing self-calibration based on historical data, comprising:
establishing a characteristic database, wherein the characteristic database comprises a corresponding relation between dosing flow parameters and dosing frequency parameters;
acquiring real-time inflow and outflow water quality parameters of a reaction tank, and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
according to the real-time dosing flow parameters, a dosing frequency parameter corresponding to the dosing flow is called in a characteristic database, and the dosing frequency to the reaction tank is controlled and regulated according to the dosing frequency parameter;
the method further comprises the steps of:
calculating a dosing calibration factor in response to a drop in the liquid level in the dosing tank; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period that the liquid level of the dosing tank drops by a preset calibration height;
updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient;
the calculating of the dosing calibration coefficient specifically comprises:
recording the real-time dosing frequency in the period of the liquid level drop calibration height of the dosing tankf n Determining the dosing flow rate corresponding to each dosing frequencyQ i Total time of use corresponding to different dosing frequenciest i Acquiring the actual volume of the liquid medicine flowing out in the calibrated height periodV= ；
Determining the theoretical volume of the liquid medicine flowing out of the calibration height period according to the cross-sectional area of the medicine adding box and the calibration height valueV 0 ；
Determining a dosing calibration coefficient according to the ratio of the actual volume of the liquid medicine flowing out of the calibration height period to the theoretical volumen= V/V 0 ；
The corresponding relation between the dosing flow and the dosing frequency in the characteristic database is updated specifically as follows: dosing flow corresponding to each dosing frequency after adjustment = dosing flow before adjustment.
2. The method of self-calibration for dosing based on historical data of claim 1, wherein the predetermined calibration height value is proportional to the cross-sectional area of the dosing tank.
3. A self-calibrating dosing device based on historical data, the device comprising:
the characteristic database is used for storing the corresponding relation between the dosing flow and the dosing frequency;
the parameter acquisition module is used for acquiring real-time inflow and outflow water quality parameters of the reaction tank and determining real-time dosing flow parameters according to the real-time inflow and outflow water quality parameters;
the adjusting module is used for adjusting the dosing frequency corresponding to the dosing flow in the characteristic database according to the dosing flow, and controlling and adjusting the dosing frequency to the reaction tank;
the apparatus further comprises:
the calculating module is used for responding to the decrease of the liquid level in the dosing tank and calculating a dosing calibration coefficient; the dosing calibration coefficient is the ratio of the actual volume of the liquid medicine flowing out to the theoretical volume in the period of the liquid level decreasing calibration height of the dosing tank;
and the updating module is used for updating the corresponding relation between the dosing flow and the dosing frequency in the characteristic database according to the dosing calibration coefficient.
4. A device for dosing self-calibration based on historical data, comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 2.
5. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 2.
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| CN202210587474.5A CN115159645B (en) | 2022-05-27 | 2022-05-27 | Method, device and equipment for dosing self-calibration based on historical data |
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| CN202210587474.5A CN115159645B (en) | 2022-05-27 | 2022-05-27 | Method, device and equipment for dosing self-calibration based on historical data |
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Patent Citations (6)
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| CN111302411A (en) * | 2020-03-02 | 2020-06-19 | 银天远创(厦门)科技有限公司 | Intelligent water treatment system and treatment method thereof |
| CN112919599A (en) * | 2020-09-16 | 2021-06-08 | 金风环保有限公司 | Chemical phosphorus removal and medicine adding control method and equipment |
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