CN118008826A - Control treatment method for power plant wastewater - Google Patents
Control treatment method for power plant wastewater Download PDFInfo
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- CN118008826A CN118008826A CN202410164075.7A CN202410164075A CN118008826A CN 118008826 A CN118008826 A CN 118008826A CN 202410164075 A CN202410164075 A CN 202410164075A CN 118008826 A CN118008826 A CN 118008826A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 142
- 230000002265 prevention Effects 0.000 claims abstract description 78
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 239000004519 grease Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
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- 229910021645 metal ion Inorganic materials 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The application discloses a control treatment method for power plant wastewater, which is used for detecting a water pump rotating speed parameter, a flow rate parameter and a water pressure parameter in a monitoring period, considering the influence of the water pump operation on the water pressure and the flow rate, detecting the water pump rotating speed parameter in a first period, judging the magnitude relation of the flow rate parameter after a buffering interval period, monitoring the water pressure in real time in the buffering interval period and a second period of the monitoring period, calculating an initial prevention and control value based on the magnitude judgment relation of a set threshold value, comprehensively judging the influence of the water pump rotating speed parameter, the flow rate parameter and the water pressure parameter on a wastewater conveying pipeline on the wastewater discharge working stability, improving the comprehensiveness and comprehensiveness of safety protection analysis, performing advanced prevention and control feedback on risks, and improving the safety protection effectiveness and timeliness of a control system.
Description
Technical Field
The application relates to the technical field of power plant wastewater discharge control methods, in particular to a control treatment method for power plant wastewater.
Background
The power plant wastewater refers to wastewater containing various pollutants generated in the power generation process. These waste waters come mainly from the following aspects:
And (3) discharging cooling water: power plants typically use water cooling systems to reduce the water pressure of the power generation equipment. The cooling water may be contaminated during use, including suspended solids, metal ions, chemical additives, and the like. These components of the wastewater need to be controlled and treated.
Flue gas desulfurization wastewater: in order to reduce sulfur dioxide emissions from coal-fired power plants, flue gas desulfurization techniques are often employed. The waste water produced in this process contains sulfur dioxide, gypsum, chloride, etc., and needs to be treated and then discharged or disposed of.
Boiler waste water: the boiler waste water from a power plant may contain various chemicals such as grease, dissolved oxygen, alkaline and acidic components. These waste waters need to be treated to prevent negative environmental impact.
The wastewater treatment system washes wastewater: the power plant wastewater treatment system itself also produces some wastewater, primarily from cleaning, rinsing, etc. operations of the wastewater treatment facility, which may contain residual treating agents, sediment, etc.
In order to effectively realize the treatment and discharge of the wastewater of the power plant, the power plant establishes a wastewater treatment system, and harmful substances in the wastewater are removed or reduced to a level meeting the discharge standard through physical, chemical and biological treatment processes. Wastewater treatment systems typically include settling tanks, bioreactors, filters, etc. for removal of suspended matter, heavy metals, organics, etc.
In the discharge process of the wastewater of a power plant, the wastewater liquid flow is driven by the water pump to be discharged outwards along the conveying pipeline, so that the stability of the wastewater in the discharge process is ensured, the occurrence of larger liquid flow fluctuation is prevented from generating larger impact on a conveying pipe network, the pressure and the flow rate of the conveying liquid flow are generally required to be safely monitored, the current control method is to perform treatment action only when the pressure or the flow rate exceeds a threshold value, the larger fluctuation impact is prevented, the monitoring hysteresis is low, the advanced monitoring protection of the wastewater discharge stability cannot be effectively realized, and the working stability of a wastewater discharge system cannot be effectively ensured.
Disclosure of Invention
According to the control treatment method for the power plant wastewater, the working stability of the wastewater discharge system is judged in advance by detecting the rotation speed, the flow speed and the water pressure of the water pump, and the control comprehensiveness of the treatment system is improved.
The application provides a control treatment method for power plant wastewater, which comprises the following steps: acquiring a plurality of water pump rotating speed parameters in a first period in a monitoring period, acquiring a plurality of flow speed parameters in a second period in the monitoring period, wherein the time length of the first period is smaller than that of the second period, the first period is positioned in the front of the second period in the monitoring period, a buffer interval period is arranged between the first period and the second period, and a plurality of water pressure parameters in the buffer interval period and the second period are acquired;
taking the average value of the water pump rotating speed parameters as an average water pump rotating speed parameter, taking the average value of the flow speed parameters as an average flow speed parameter, and taking the average value of the water pressure parameters as an average water pressure parameter;
Judging the magnitude relation between the average water pump rotating speed parameter and a water pump rotating speed parameter threshold, judging the magnitude relation between the average flow speed parameter and a flow speed parameter threshold, and judging the magnitude relation between the average water pressure parameter and a water pressure parameter threshold;
If the average water pump rotating speed parameter is larger than the water pump rotating speed parameter threshold, increasing an initial prevention and control value by using a first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged;
If the average flow velocity parameter is larger than the flow velocity parameter threshold, increasing an initial prevention and control value by the first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged;
If the average water pressure parameter is larger than the water pressure parameter threshold, increasing an initial prevention and control value by a second prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged, wherein the second prevention and control parameter is larger than the first prevention and control parameter;
After comparing the average water pump rotating speed parameter, the average flow speed parameter and the average water pressure parameter in the preset period with the water pump rotating speed parameter threshold, the flow speed parameter threshold and the water pressure parameter threshold respectively, judging the magnitude relation between the initial prevention and control value and the initial threshold, and driving the warning unit to work if the initial prevention and control value is larger than the initial threshold.
Further, after comparing the average water pump rotational speed parameter, the average flow rate parameter and the average water pressure parameter in the preset period with the water pump rotational speed parameter threshold, the flow rate parameter threshold and the water pressure parameter threshold, respectively, the initial prevention and control value is determined by accumulating the second prevention and control parameter or the first prevention and control parameter.
Further, the second prevention and control parameter is twice the first prevention and control parameter.
Further, the time length of the buffer interval period is smaller than the time length of the first period, and the time length of the buffer interval period is 300s.
Further, the initial prevention and control value is 0, and the first prevention and control parameter and the second prevention and control parameter are both greater than 0.
Further, the warning unit is a buzzer or a warning lamp.
Further, the initial threshold is 1/2 of the sum of the first prevention and control parameter and the second prevention and control parameter.
Further, the rotational speed parameter of the water pump is the rotational speed of a motor driving an impeller of the water pump to operate, the flow speed parameter is obtained by a flow speed sensor, the water pressure parameter is obtained by a water pressure sensor, and the flow speed sensor and the water pressure sensor are arranged on a pipeline for conveying wastewater.
The embodiment of the application has the following beneficial effects: the method comprises the steps of detecting water pump rotating speed parameters, flow speed parameters and water pressure parameters in a monitoring period, considering the influence of water pump operation on water pressure and flow speed, detecting the water pump rotating speed parameters in a first period, judging the magnitude relation of the flow speed parameters after a buffering interval period, monitoring the water pressure in real time in the buffering interval period and a second period of the monitoring period, calculating an initial prevention and control value based on the magnitude judgment relation of a set threshold value, comprehensively judging the influence of the water pump rotating speed parameters, the flow speed parameters and the water pressure parameters on a wastewater conveying pipeline on the wastewater discharge working stability, improving the comprehensiveness and comprehensiveness of safety protection analysis, performing advanced prevention and control feedback on risks, and improving the safety protection effectiveness and timeliness of a control system.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 schematically illustrates a flow chart of a control treatment method for power plant wastewater provided by an embodiment of the application;
Fig. 2 schematically illustrates a monitoring cycle in an embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.
In order to further explain the technical solution provided by the embodiments of the present application, the following details are described with reference to the accompanying drawings and the detailed description. Although embodiments of the present application provide the method operational steps shown in the following embodiments or figures, more or fewer operational steps may be included in the method based on routine or non-inventive labor. In steps where there is logically no necessary causal relationship, the execution order of the steps is not limited to the execution order provided by the embodiments of the present application.
Referring to fig. 1-2, the present application provides a control treatment method for power plant wastewater, comprising: a plurality of water pump rotational speed parameters in a first period in a monitoring period are acquired, a plurality of flow speed parameters in a second period in the monitoring period are acquired, and a plurality of water pressure parameters in the first period and the second period are acquired.
Specifically, the rotational speed parameter of the water pump is the rotational speed of a motor for driving an impeller of the water pump to operate, the flow speed parameter is obtained by a flow speed sensor, the water pressure parameter is obtained by a water pressure sensor, the flow speed sensor and the water pressure sensor are arranged on a pipeline for conveying wastewater, the rotational speed of the motor can be obtained through the treatment connected with the motor, and then the rotational speed value of the water pump of the current water pump is determined.
The rotation speed of the motor for driving the water pump to rotate is determined by referring to the step of the discharge flow of the wastewater on the current conveying pipeline, and the rotation speed parameter of the water pump is determined according to different wastewater discharge flow steps, wherein the higher the discharge flow is, the larger the rotation speed parameter of the water pump is, namely, the larger the gear corresponding to the rotation speed parameter of the water pump is, the three gears can be set, the rotation speed parameter of the water pump in the first gear is the lowest, and the rotation speed parameter of the water pump in the third gear is the lowest. Setting water pump rotating speed parameter thresholds on respective gears of the water pump rotating speed parameters, wherein the higher the gears are, the larger the set water pump rotating speed parameter thresholds are, so that the stability of the water pump rotating speed parameters in different gears is monitored.
According to the application, the rotational speed parameter, the water pressure parameter and the flow speed parameter of the water pump are comprehensively considered and evaluated in the monitoring period, so that warning information is prompted to a worker after comprehensive evaluation and analysis, the worker is further informed of potential risks existing in the discharge system in advance, and the risks are pre-judged and analyzed in advance and warning prompt is performed.
Specifically, the time length of the first period is smaller than that of the second period, and the larger time length is used for monitoring the flow speed reference value and the water pressure reference value under the water pump rotating speed parameter. That is, the water pump directly affects the water pressure parameter and the flow rate parameter after operation, so that the data is prevented from being greatly fluctuated in order to consider the acquisition stability of the reference value, and the water pressure reference value is acquired in a longer second period.
The first period is located in the preamble of the second period in the monitoring period, namely, the second period is located after the first period in the monitoring period, in order to improve the detection stability of water pressure and flow rate and improve the stability of system prevention and control, a buffer interval period is arranged between the first period and the second period, the time length of the buffer interval period is smaller than that of the first period, and the time length of the buffer interval period is 300s. Therefore, the flow rate parameter can be acquired and analyzed in a second period after the buffer interval period, and detection interference caused when the water pump is started instantaneously and the flow rate parameter is not directly influenced is prevented.
Specifically, the water pressure parameter has a larger influence on the safety of the device, and is also an important reference basis for performing prevention and control prompt in evaluating the safety performance of the device. Therefore, the hydraulic pressure parameters are comprehensively monitored and acquired in the buffer interval period and the second period in the prevention and control period, and the comprehensiveness of acquiring the hydraulic pressure parameters is ensured.
And determining the average parameter by taking the average value of the water pump rotating speed parameters as the average water pump rotating speed parameter, taking the average value of the flow rate parameters as the average flow rate parameter and taking the average value of the water pressure parameters as the average water pressure parameter, and improving the detection accuracy in the monitoring period by acquiring the water pump rotating speed parameter, the flow rate parameter and the water pressure parameter.
And judging the magnitude relation between the average water pump rotating speed parameter and the water pump rotating speed parameter threshold, judging the magnitude relation between the average flow speed parameter and the flow speed parameter threshold, and judging the magnitude relation between the average water pressure parameter and the water pressure parameter threshold.
If the average water pump rotating speed parameter is larger than the water pump rotating speed parameter threshold, increasing an initial prevention and control value by using a first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged; if the average flow velocity parameter is larger than the flow velocity parameter threshold, increasing an initial prevention and control value by the first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged; if the average water pressure parameter is larger than the water pressure parameter threshold, increasing an initial prevention and control value by a second prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged, wherein the second prevention and control parameter is larger than the first prevention and control parameter.
After comparing the average water pump rotational speed parameter, the average flow rate parameter and the average water pressure parameter in the preset period with the water pump rotational speed parameter threshold, the flow rate parameter threshold and the water pressure parameter threshold respectively, the initial prevention and control value is determined by the accumulated value of the second prevention and control parameter or the first prevention and control parameter.
Specifically, the initial control value is that the first control parameter and the second control parameter are both greater than 0, and the second control parameter is twice the first control parameter.
For example, the first prevention and control parameter is 2, the second prevention and control parameter is 4, and if the average water pump rotational speed parameter is greater than the water pump rotational speed parameter threshold, the average flow rate parameter is less than the flow rate parameter threshold, and the average water pressure parameter is greater than the water pressure parameter threshold, the initial prevention and control value is determined to be 6 by accumulating with one first prevention and control parameter and one second prevention and control parameter.
If the average water pump rotational speed parameter is less than the water pump rotational speed parameter threshold, the average flow rate parameter is greater than the flow rate parameter threshold, and the average water pressure parameter is greater than the water pressure parameter threshold, the initial prevention and control value is accumulated by a first prevention and control parameter and a second prevention and control parameter and is determined to be 6.
If the average water pump rotational speed parameter is greater than the water pump rotational speed parameter threshold, the average flow rate parameter is greater than the flow rate parameter threshold, and the average water pressure parameter is greater than the water pressure parameter threshold, the initial prevention and control value is determined to be 8 by accumulating the two first prevention and control parameters and the one second prevention and control parameter.
If the average water pump rotational speed parameter is less than the water pump rotational speed parameter threshold, the average flow rate parameter is less than the flow rate parameter threshold, and the average water pressure parameter is greater than the water pressure parameter threshold, the initial prevention and control values are accumulated with only one second prevention and control parameter and are determined to be 4.
Judging the magnitude relation between the initial prevention and control value and the initial threshold value, if the initial prevention and control value is larger than the initial threshold value, driving the warning unit to work, otherwise, not driving the warning unit to work, wherein the warning unit is a buzzer or a warning lamp, and when the warning unit works, buzzing prevention and control sound or warning light can be emitted.
Specifically, the initial threshold is 1/2 of the sum of the first control parameter and the second control parameter. For example, if the first control parameter is 2 and the second control parameter is 4, the initial threshold is 3. By setting the initial threshold to 1/2 of the sum of the first control parameter and the second control parameter, the evaluation weight of the water pressure parameter in the control area can be increased, and the evaluation of the water pressure parameter in the control area and the prompt for safety warning are emphasized. According to the technical scheme, the first prevention and control parameter and the second prevention and control parameter are reasonably set, so that the water pump rotating speed parameter, the flow speed parameter and the water pressure parameter can be effectively subjected to weight division when the integrated reference assessment risk is carried out, and different risk grades are determined according to the weight division, so that the advanced judgment is carried out.
For example, if the initial prevention and control value after the accumulation processing is 6, which is greater than the set initial threshold value 3, the warning unit is driven to work so as to prompt and warn the personnel to risk of the device, thereby requiring the personnel to observe and overhaul the wastewater discharge system in time so as to realize the advanced pre-judgment of the risk.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A control treatment method for power plant wastewater, comprising:
Acquiring a plurality of water pump rotating speed parameters in a first period in a monitoring period, acquiring a plurality of flow speed parameters in a second period in the monitoring period, wherein the time length of the first period is smaller than that of the second period, the first period is positioned in the front of the second period in the monitoring period, a buffer interval period is arranged between the first period and the second period, and a plurality of water pressure parameters in the buffer interval period and the second period are acquired;
taking the average value of the water pump rotating speed parameters as an average water pump rotating speed parameter, taking the average value of the flow speed parameters as an average flow speed parameter, and taking the average value of the water pressure parameters as an average water pressure parameter;
Judging the magnitude relation between the average water pump rotating speed parameter and a water pump rotating speed parameter threshold, judging the magnitude relation between the average flow speed parameter and a flow speed parameter threshold, and judging the magnitude relation between the average water pressure parameter and a water pressure parameter threshold;
If the average water pump rotating speed parameter is larger than the water pump rotating speed parameter threshold, increasing an initial prevention and control value by using a first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged;
If the average flow velocity parameter is larger than the flow velocity parameter threshold, increasing an initial prevention and control value by the first prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged;
If the average water pressure parameter is larger than the water pressure parameter threshold, increasing an initial prevention and control value by a second prevention and control parameter, otherwise, maintaining the initial prevention and control value unchanged, wherein the second prevention and control parameter is larger than the first prevention and control parameter;
After comparing the average water pump rotating speed parameter, the average flow speed parameter and the average water pressure parameter in the preset period with the water pump rotating speed parameter threshold, the flow speed parameter threshold and the water pressure parameter threshold respectively, judging the magnitude relation between the initial prevention and control value and the initial threshold, and driving the warning unit to work if the initial prevention and control value is larger than the initial threshold.
2. The method of claim 1, wherein the initial control value is determined by accumulating the second control parameter or the first control parameter after comparing the average water pump speed parameter, the average flow rate parameter, and the average water pressure parameter over the preset period with the water pump speed parameter threshold, the flow rate parameter threshold, and the water pressure parameter threshold, respectively.
3. The method of claim 2, wherein the second prevention and control parameter is twice the first prevention and control parameter.
4. The method of claim 2, wherein the length of the buffer interval period is less than the length of the first period, and wherein the length of the buffer interval period is 300s.
5. A method according to claim 3, wherein the initial control value is 0, and the first control parameter and the second control parameter are both greater than 0.
6. The method according to claim 1, wherein the warning unit is a buzzer or a warning light.
7. A method according to claim 3, wherein the initial threshold is 1/2 of the sum of the first and second control parameters.
8. The method according to claim 1, wherein the water pump rotational speed parameter is a rotational speed of a motor driving an impeller of a water pump to operate, the flow rate parameter is obtained by a flow rate sensor, the water pressure parameter is obtained by a water pressure sensor, and the flow rate sensor and the water pressure sensor are provided on a pipe line for transporting wastewater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410164075.7A CN118008826A (en) | 2024-02-05 | 2024-02-05 | Control treatment method for power plant wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410164075.7A CN118008826A (en) | 2024-02-05 | 2024-02-05 | Control treatment method for power plant wastewater |
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| CN118008826A true CN118008826A (en) | 2024-05-10 |
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| CN202410164075.7A Pending CN118008826A (en) | 2024-02-05 | 2024-02-05 | Control treatment method for power plant wastewater |
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