CN117886381B - Water treatment agent adding control method and system - Google Patents
Water treatment agent adding control method and system Download PDFInfo
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- CN117886381B CN117886381B CN202410287930.3A CN202410287930A CN117886381B CN 117886381 B CN117886381 B CN 117886381B CN 202410287930 A CN202410287930 A CN 202410287930A CN 117886381 B CN117886381 B CN 117886381B
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- 238000011282 treatment Methods 0.000 title claims abstract description 144
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 89
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- 239000003344 environmental pollutant Substances 0.000 claims abstract description 197
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- 239000010865 sewage Substances 0.000 claims abstract description 149
- 238000005315 distribution function Methods 0.000 claims abstract description 98
- 238000009792 diffusion process Methods 0.000 claims abstract description 64
- 238000005070 sampling Methods 0.000 claims abstract description 55
- 230000006870 function Effects 0.000 claims description 77
- 230000008859 change Effects 0.000 claims description 59
- 239000000356 contaminant Substances 0.000 claims description 30
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- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
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Abstract
The invention provides a method and a system for controlling the adding of a water treatment agent, and relates to the technical field of water treatment. The method comprises the following steps: setting a plurality of sampling points in the sewage pool at a first moment after sewage is added into the sewage pool, and collecting a first sewage sample; measuring first content information of a plurality of pollutants in a first sewage sample and determining a first distribution function; collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, measuring second content information of various pollutants in the second sewage samples, and determining a second distribution function; determining a diffusion trend function of a plurality of pollutants; determining the adding position and adding dosage of the water treatment agent corresponding to various pollutants; and adding a water treatment agent into the sewage pool. According to the invention, the distribution condition and the diffusion condition of pollutants in the sewage pool can be determined, so that the adding position and the dosage of the water treatment agent can be determined in a targeted manner, the accurate water treatment is realized, and the water treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a method and a system for controlling the adding of a water treatment agent.
Background
In the related art, CN114229974a provides a water treatment system and a method for controlling the dosage of a water treatment agent, the control method includes the following steps: s1: obtaining hydraulic conditions in the water treatment tank; s2: simulating the hydraulic conditions in the water treatment tank by simulating a coagulation reactor; s3: acquiring the relation between the concentration of the medicament in the simulated coagulation reactor and the quality of effluent water under the hydraulic condition; s4: determining the optimal medicament concentration according to the relationship between the medicament concentration and the effluent quality; s5: and determining the adding amount of the water treatment agent according to the optimal agent concentration. According to the control method for the adding amount of the water treatment agent, the adding amount of the agent in the water treatment process is determined by simulating the coagulation sedimentation process in the water treatment tank under the hydraulic condition that the coagulation reactor is consistent with the water treatment tank, so that the proximity of the simulation process to the actual water treatment process is improved, and the accuracy of the result is improved.
CN117383670a relates to an intelligent dosing control method for water treatment, comprising the following steps: setting N dosing intervals by taking turbidity as a judging standard, wherein each dosing interval corresponds to different dosing amounts; acquiring the turbidity and flow of the current raw water; judging a dosing interval corresponding to the turbidity of the current raw water, and determining initial dosing amount according to the dosing interval; calculating the actual dosing amount according to the initial dosing amount by combining the current raw water flow, and dosing according to the actual dosing amount; acquiring the turbidity of the discharged water after the preset time, and calculating the compensation dosing amount when the turbidity of the discharged water exceeds a threshold value; and summing the compensation dosing amount and the actual dosing amount to obtain new actual dosing amount, and dosing based on the new actual dosing amount. The method can automatically adjust the dosage according to the water quality change of raw water.
Therefore, in the related art, although the dosage of the chemical in the water treatment process can be determined, the dosage position of the chemical for water treatment cannot be determined, so that the chemical for water treatment is difficult to fully react with pollutants in sewage, the water treatment efficiency is low, and more time may be required to reach the required water quality standard.
The information disclosed in the background section of the application is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a water treatment agent feeding control method and a water treatment agent feeding control system, which can solve the technical problem that the water treatment efficiency is low due to the fact that the feeding position of the water treatment agent is difficult to determine.
According to a first aspect of the present invention, there is provided a method of controlling the addition of a water treatment agent, comprising: setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool, and collecting first sewage samples of the sampling points; measuring first content information of various pollutants in a first sewage sample of each sampling point through a spectrometer; determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; determining a diffusion trend function of the multiple pollutants according to a first distribution function and a second distribution function of the multiple pollutants in the sewage tank; determining the adding positions and adding doses of the water treatment agents corresponding to various pollutants according to the diffusion trend function and the second distribution function; and adding the water treatment agent into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants.
According to a second aspect of the present invention, there is provided a water treatment agent dosing control system, the system comprising: the sewage treatment device comprises a sampling point setting module, a sewage treatment module and a sewage treatment module, wherein the sampling point setting module is used for setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool and collecting first sewage samples of the plurality of sampling points; the first content information module is used for measuring first content information of various pollutants in the first sewage sample of each sampling point through the spectrometer; the first distribution function module is used for determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the second content information module is used for collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; the second distribution function module is used for determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the diffusion trend function module is used for determining diffusion trend functions of various pollutants according to a first distribution function and a second distribution function of the various pollutants in the sewage tank; the dosing position and dosing module is used for determining the dosing position and dosing amount of the water treatment agent corresponding to various pollutants according to the diffusion trend function and the second distribution function; the water treatment agent adding module is used for adding the water treatment agent into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants.
The technical effects are as follows: according to the invention, the distribution condition and the diffusion condition of pollutants in the sewage pool can be determined by collecting sewage samples at different positions and measuring the content information of various pollutants, so that the adding position and the dosage of the water treatment agent can be determined in a targeted manner, the accurate water treatment is realized, the water treatment efficiency is improved, and the water treatment duration is shortened. When the diffusion trend function is determined, an equation to be fitted of the diffusion trend function of the ith pollutant can be established through the first distribution function, the second distribution function, the average content information and the characteristics of the arc tangent function, so that the diffusion trend function of the ith pollutant is solved and obtained, the change rule of different pollutants in the sewage pool is fitted more accurately, and the change of the pollutant content in the sewage pool is monitored effectively. When the content change function is determined, the content change function of the ith pollutant at each position in the sewage pool can be established through the second distribution function and the diffusion trend function, so that the future change trend of the pollutant is predicted, and an accurate data basis is provided for accurately determining the adding position. When determining the adding position and adding dosage of the water treatment agent, the adding position and dosage of the water treatment agent can be determined pertinently by analyzing the variation extremum position and the second distribution function of the pollutant, and the water treatment agent can be added into the position with faster variation of the pollutant content, so that the concentration rising trend of the position with lower pollutant concentration is restrained rapidly, the pollutant concentration diffusion trend of the position with higher pollutant concentration is restrained rapidly, the water treatment agent is accurately added into the position with larger demand for the water treatment agent, the accurate treatment of the pollutant is realized, the water treatment process is optimized, and the treatment efficiency and effect are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed. Other features and aspects of the present invention will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions of the prior art, the drawings which are necessary for the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other embodiments may be obtained from these drawings without inventive effort to a person skilled in the art,
FIG. 1 schematically illustrates a flow chart of a method of controlling the dosing of a water treatment agent according to an embodiment of the present invention;
Fig. 2 schematically illustrates a block diagram of a water treatment agent dosing control system according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 1 schematically shows a flow chart of a method for controlling the dosing of a water treatment agent according to an embodiment of the invention, the method comprising: step S101, setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool, and collecting first sewage samples of the plurality of sampling points; step S102, measuring first content information of various pollutants in a first sewage sample of each sampling point through a spectrometer; step S103, determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; step S104, collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; step S105, determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; step S106, determining a diffusion trend function of the multiple pollutants according to the first distribution function and the second distribution function of the multiple pollutants in the sewage pool; step S107, determining the adding position and the adding dosage of the water treatment agent corresponding to various pollutants according to the diffusion trend function and the second distribution function; step S108, adding the water treatment agent into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants.
According to the method for controlling the adding of the water treatment agent, disclosed by the embodiment of the invention, the distribution condition and the diffusion condition of pollutants in a sewage tank can be determined by collecting sewage samples at different positions and measuring the content information of various pollutants, so that the adding position and the dosage of the water treatment agent are determined in a targeted manner, the accurate water treatment is realized, the water treatment efficiency is improved, and the water treatment duration is shortened.
According to an embodiment of the present invention, in step S101, the interval between the time when all sewage is added to the sewage tank and the first time may be set to five minutes, ten minutes, etc., and a certain time after the water surface of the sewage tank is calm may be set as the first time, which is not limited by the present invention. By setting sampling points at different positions and collecting samples, the water quality condition of each position in the sewage pool can be more comprehensively known, because water quality differences can exist at different positions. The first sewage sample obtained can be used as a reference in the subsequent water quality analysis and treatment process and used for determining a proper treatment strategy and the adding position of the water treatment medicament.
According to one embodiment of the present invention, in step S102, the spectrometer is a spectrometer for analyzing information of the content of contaminants in a sample, and chemical components in the sample can be identified and quantified by measuring the absorption or emission characteristics of the sample under different wavelengths of light. By measuring the sewage sample by means of a spectrometer, content information of different pollutants, i.e. first content information, can be obtained, so that the type and content level of the pollutants can be determined.
According to an embodiment of the present invention, in step S103, a first distribution function is determined, that is, a spatial distribution function of multiple pollutants in the sewage pool is established, and pollutant concentration distribution conditions of different positions can be displayed, for example, first content information of multiple sampling points at a first moment can be fitted to position information of the sampling points, so as to obtain the first distribution function.
According to an embodiment of the present invention, in step S104, the interval between the first time and the second time may be set to five minutes, ten minutes, or the like, to which the present invention is not limited. By analyzing the sewage sample at the second moment, the second content information of the pollutants in the second sewage sample in each sampling point is obtained, the change condition of the pollutants can be monitored in time, and important basis is provided for adjusting the water treatment strategy and optimizing the water quality control and the subsequent water treatment operation is guided.
According to one embodiment of the present invention, in step S105, by comprehensively considering the second content information of the pollutants at each sampling point at the second moment and the position information of the pollutants in the sewage pool, the distribution situation of different pollutants in the sewage pool can be deduced, for example, by fitting the second content information and the position information, a second distribution function is obtained. The second distribution function can display the concentration distribution condition of the pollutants in different areas at the second moment, and the second distribution function is compared with the first distribution function to reveal the information of the change trend, migration path and the like of the pollutants.
According to one embodiment of the present invention, in step S106, by analyzing the first distribution function and the second distribution function, a diffusion trend of the contaminants, i.e. a functional relation of how the contaminants diffuse, migrate and change over time in the lagoon, can be deduced.
According to one embodiment of the present invention, step S106 includes: integrating the second distribution function in the range of the sewage pool to obtain the total content information of the ith pollutant in the sewage pool, wherein i is a positive integer, i is less than or equal to N, and N is the type number of the pollutant in the sewage pool; determining the average content information of the ith pollutant in the sewage pool according to the total content information; and determining a diffusion trend function of the ith pollutant according to the first distribution function, the second distribution function and the average content information.
According to one embodiment of the invention, the level information of a contaminant (e.g., a soluble contaminant) at multiple locations in the lagoon will tend to be consistent, i.e., average level information is achieved, over an indefinite period of time. And combining the first distribution function, the second distribution function and the average content information to determine the diffusion trend function of the ith pollutant. The function describes the diffusion rule and the change trend of the ith pollutant in the sewage pool, and provides important basis for formulating corresponding treatment strategies and the adding position and dosage of water treatment medicaments.
According to one embodiment of the invention, determining a diffusion trend function of an ith contaminant from the first distribution function, the second distribution function, and the average content information comprises: obtaining a to-be-fitted equation of the diffusion trend function of the ith pollutant according to the formula (1),(1) Wherein/>As a second distribution function of the ith contaminant,/>As a first distribution function of the ith contaminant,/>For the first moment,/>For the second moment,/>For the information of the total content of the ith pollutant in the sewage pool,/>Is the volume of the sewage pool,/>For the information of the average content of the ith pollutant in the sewage pool,/>And/>The coefficient to be determined of the equation to be fitted for the diffusion trend function of the ith pollutant; solving the coefficient to be determined of the equation to be fitted of the diffusion trend function of the ith pollutant through the function values of the first distribution function and the second distribution function of the ith pollutant at a plurality of positions to obtain a solving value of the coefficient to be determined; and obtaining the diffusion trend function of the ith pollutant according to the solving value and the equation to be fitted of the diffusion trend function of the ith pollutant.
According to one embodiment of the present invention, in equation (1),Representing the absolute value of the difference between the second distribution function of the ith contaminant and the first distribution function of the ith contaminant. This value reflects the degree of variation in the distribution of the ith contaminant at different times and locations. The arctangent function is a continuous and smooth function within its definition domain, and the function has limits that can be used to describe some continuous variation, and the variation has limited course, such as variation in diffusion, during which the contaminant content information at each location continuously varies, and eventually reaches the average content information described above. This characteristic allows it to capture some rapid trend of change, e.g., the initial increase in diffusion concentration is rapid, with the slope change being large near its domain boundary, while remaining relatively gentle in other areas, suitable for describing the final average contaminant content information for each location after a long period of diffusion. The arctangent function has characteristics suitable for describing the diffusion tendency of the contaminants, and thus is used to fit the degree of variation in the distribution of the ith contaminant. The limit value of the arctangent function is/>By coefficient/>The limit value obtained by multiplying the arctangent function by the coefficient is the average content information/>。/>Representing fitting the variation of the contaminant content between the first moment and the second moment by means of an arctangent function of the limit value to said average content information.Representing the coefficient to be determined by adding the constant term, and thus representing the error term, so that the error term better conforms to the characteristics of the actual data. And (3) making the two items equal, solving the coefficient to be determined based on the change of the pollutant contents of the plurality of positions between the first moment and the second moment, thereby obtaining a solution value of the coefficient to be determined, and substituting the solution value into the formula (1) to obtain the diffusion trend function of the ith pollutant.
In this way, the equation to be fitted of the diffusion trend function of the ith pollutant can be established through the first distribution function, the second distribution function, the average content information and the characteristics of the arctangent function, so that the diffusion trend function of the ith pollutant is solved and obtained, the change rule of different pollutants in the sewage pool can be fitted more accurately, and the change of the pollutant content in the sewage pool can be monitored effectively.
According to one embodiment of the present invention, in step S107, based on the analysis of the diffusion trend function and the second distribution function, a suitable dosing position in the lagoon may be determined, which may be a position with a higher concentration of contaminants or a faster diffusion rate. By controlling the dosage and the dosage position, the concentration of pollutants can be quickly reduced, so as to achieve the optimal water treatment efficiency and effect.
According to one embodiment of the present invention, step S107 includes: determining a content change function of the ith pollutant at each position in the sewage pool according to the second distribution function and the diffusion trend function; determining the content change rate of the ith pollutant at each position in the sewage pool according to the content change function of the ith pollutant at each position in the sewage pool; determining a change extremum position according to the content change rate of the ith pollutant at each position; and determining the adding position and the adding dose of the water treatment agent corresponding to the ith pollutant according to the change extremum position and the second distribution function.
According to one embodiment of the invention, the extreme position of the content variation is found by analyzing the content variation rate of the ith contaminant at each position. The content change rate is obtained by deriving a content change function over time. According to the extreme value position, the adding position of the water treatment agent is determined, and the adding dosage of the water treatment agent can be determined based on the distribution condition of the pollutant content near the changing extreme value position, so that various pollutants in the sewage pool can be controlled and treated more effectively, and the treatment efficiency is improved.
According to one embodiment of the invention, determining a content variation function of the ith pollutant at each location in the lagoon based on the second distribution function and the diffusion trend function comprises: determining a content variation function of the ith pollutant at each position in the lagoon according to formula (2),(2) Wherein/>As a distribution function of the ith pollutant at time t,/>For/>Solution value of/>For/>Solution value of t >/>。
According to one embodiment of the present invention, in equation (2),The absolute value of the difference between the distribution function of the ith contaminant at time t and the second distribution function of the ith contaminant is represented, which reflects the degree of change in the distribution of the ith contaminant at each location at time t relative to the second time.And the law that the content of pollutants at different positions in the sewage tank changes with time is represented by the time t relative to the second time. And (3) the two items are equal, and the t value is substituted, so that the change information of the content of the ith pollutant at each position relative to the content at the second moment at the moment t can be obtained, namely, the content change function of the ith pollutant at each position in the sewage pool can be obtained.
By the method, the content change function of the ith pollutant at each position in the sewage pool can be established through the second distribution function and the diffusion trend function, so that the future change trend of the pollutant is predicted, and an accurate data basis is provided for accurately determining the adding position.
According to one embodiment of the invention, determining the position of the extreme variation value according to the rate of variation of the content of the ith pollutant at each of said positions comprises: acquiring a plurality of undetermined positions with content change rate higher than a preset change rate threshold; carrying out connected domain analysis on the plurality of undetermined positions to obtain a plurality of connected domains; and determining the geometric center position of each connected domain as the variation extremum position.
According to one embodiment of the invention, connectivity relationships between a plurality of pending locations may be determined, forming a plurality of connected domains. A connected domain refers to a collection of locations that have an interrelated or adjacent relationship in space. In the connected domain, including a plurality of positions with high content change rate which are clustered together, the position of the change extreme value can select a point positioned at the geometric center position of the connected domain, and the position can represent the most significant change point or concentrated change area of the content change of the pollutant.
According to one embodiment of the present invention, determining the location of the addition of the water treatment agent corresponding to the ith contaminant, and the addition dose, according to the location of the variation extremum and the second distribution function, comprises: determining the coordinates of the j-th dosing position of the water treatment agent corresponding to the i-th pollutant asWherein/>The j-th extreme position of the i-th contaminant; determining the dosing amount/>, at the j-th dosing position of the water treatment agent corresponding to the i-th pollutant, according to formula (3)，/>(3) Wherein/>The j-th communicating domain of the i-th pollutant,/>The dosage of the water treatment agent required by the ith pollutant with unit content, j is less than or equal to M, M is the number of the change extreme value positions, and j and M are positive integers; setting an M+1th addition position at any position except the addition positions corresponding to the M change extremum positions; determining the dosing amount/>, at the (M+1) th dosing position of the water treatment agent corresponding to the (i) th pollutant according to formula (4)。/>(4) In equation (3), according to one embodiment of the present invention,/>Representing a three-dimensional integral of the second distribution function in the j-th connected-domain of the i-th contaminant. The integration can obtain the content information of the i-th pollutant in the connected domain. /(I)The dosage of the water treatment chemical required for treating the ith contaminant in the jth communicating area, that is, the dosage of the water treatment chemical at the jth administration position corresponding to the ith contaminant is indicated. Wherein, the adding position can be positioned on the water surface of the sewage pool, namely, the adding is carried out from the water surface. The j-th extreme position of the i-th pollutant is/>The j-th addition position of the water treatment agent corresponding to the i-th pollutant is/>。
According to one embodiment of the present invention, in equation (4),Indicating the product of the total content information of the i-th pollutant in the wastewater tank and the dosage of the water treatment agent required to be used for the i-th pollutant per unit content, i.e., the dosage of the total water treatment agent required to be used for the i-th pollutant. /(I)The sum of the doses of the water treatment agents corresponding to the ith pollutant in the plurality of communication domains is shown. /(I)The dosage of the water treatment agent required for treating the ith pollutant in other positions except the ith pollutant in the communication domain, namely the dosage of the water treatment agent in the M+1th adding position of the water treatment agent corresponding to the ith pollutant, and the water treatment agent can be added in the optional adding position due to the relative dispersion of the ith pollutant in other positions.
Through the mode, the adding position and the dosage of the water treatment agent can be determined pertinently by analyzing the change extreme value position and the second distribution function of the pollutant, the water treatment agent can be quickly added into the position with the faster change of the pollutant content, so that the concentration rising trend of the position with the lower pollutant concentration is quickly restrained, the pollutant concentration diffusion trend of the position with the higher pollutant concentration is restrained, the water treatment agent is accurately added into the position with the larger demand for the water treatment agent, the accurate treatment of the pollutant is realized, the water treatment process is optimized, and the treatment efficiency and the treatment effect are improved.
According to one embodiment of the present invention, in step S108, a water treatment agent is added to the wastewater tank according to the addition position and the addition amount, thereby effectively implementing a water treatment strategy and improving the water treatment efficiency.
According to the method for controlling the adding of the water treatment agent, disclosed by the embodiment of the invention, the distribution condition and the diffusion condition of pollutants in a sewage tank can be determined by collecting sewage samples at different positions and measuring the content information of various pollutants, so that the adding position and the dosage of the water treatment agent are determined in a targeted manner, the accurate water treatment is realized, the water treatment efficiency is improved, and the water treatment duration is shortened. When the diffusion trend function is determined, an equation to be fitted of the diffusion trend function of the ith pollutant can be established through the first distribution function, the second distribution function, the average content information and the characteristics of the arc tangent function, so that the diffusion trend function of the ith pollutant is solved and obtained, the change rule of different pollutants in the sewage pool is fitted more accurately, and the change of the pollutant content in the sewage pool is monitored effectively. When the content change function is determined, the content change function of the ith pollutant at each position in the sewage pool can be established through the second distribution function and the diffusion trend function, so that the future change trend of the pollutant is predicted, and an accurate data basis is provided for accurately determining the adding position. When determining the adding position and adding dosage of the water treatment agent, the adding position and dosage of the water treatment agent can be determined pertinently by analyzing the variation extremum position and the second distribution function of the pollutant, and the water treatment agent can be added into the position with faster variation of the pollutant content, so that the concentration rising trend of the position with lower pollutant concentration is restrained rapidly, the pollutant concentration diffusion trend of the position with higher pollutant concentration is restrained rapidly, the water treatment agent is accurately added into the position with larger demand for the water treatment agent, the accurate treatment of the pollutant is realized, the water treatment process is optimized, and the treatment efficiency and effect are improved.
Fig. 2 schematically illustrates a block diagram of a water treatment agent dosing control system according to an embodiment of the present invention, the system comprising: the sewage treatment device comprises a sampling point setting module, a sewage treatment module and a sewage treatment module, wherein the sampling point setting module is used for setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool and collecting first sewage samples of the plurality of sampling points; the first content information module is used for measuring first content information of various pollutants in the first sewage sample of each sampling point through the spectrometer; the first distribution function module is used for determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the second content information module is used for collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; the second distribution function module is used for determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the diffusion trend function module is used for determining diffusion trend functions of various pollutants according to a first distribution function and a second distribution function of the various pollutants in the sewage tank; the dosing position and dosing module is used for determining the dosing position and dosing amount of the water treatment agent corresponding to various pollutants according to the diffusion trend function and the second distribution function; the water treatment agent adding module is used for adding the water treatment agent into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants.
According to an embodiment of the present invention, there is provided an addition control apparatus of a water treatment agent, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the instructions stored by the memory to execute the method of controlling the dosing of the water treatment agent.
According to one embodiment of the present invention, there is provided a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement a method of controlling the administration of the water treatment agent.
The present invention may be a method, apparatus, system, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for performing various aspects of the present invention.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.
Claims (4)
1. The method for controlling the adding of the water treatment medicament is characterized by comprising the following steps: setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool, and collecting first sewage samples of the sampling points; measuring first content information of various pollutants in a first sewage sample of each sampling point through a spectrometer; determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; determining a diffusion trend function of the multiple pollutants according to a first distribution function and a second distribution function of the multiple pollutants in the sewage tank; determining the adding positions and adding doses of the water treatment agents corresponding to various pollutants according to the diffusion trend function and the second distribution function; adding water treatment agents into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants;
Determining a diffusion trend function of the plurality of contaminants from the first distribution function and the second distribution function of the plurality of contaminants in the lagoon, comprising: integrating the second distribution function in the range of the sewage pool to obtain the total content information of the ith pollutant in the sewage pool, wherein i is a positive integer, i is less than or equal to N, and N is the type number of the pollutant in the sewage pool; determining the average content information of the ith pollutant in the sewage pool according to the total content information; determining a diffusion trend function of an ith pollutant according to the first distribution function, the second distribution function and the average content information;
determining a diffusion trend function of an ith contaminant from the first distribution function, the second distribution function, and the average content information, comprising: according to the formula Obtaining a equation to be fitted of a diffusion trend function of the ith pollutant, wherein f 2,i (x, y, z) is a second distribution function of the ith pollutant, f 1,i (x, y, z) is a first distribution function of the ith pollutant, t 1 is a first moment, t 2 is a second moment, C i,T is total content information of the ith pollutant in the sewage tank, V is the volume of the sewage tank, and V is/isFor the average content information of the ith pollutant in the sewage pool, alpha 1,i and alpha 2,i are the coefficients to be determined of the equation to be fitted of the diffusion trend function of the ith pollutant; solving the coefficient to be determined of the equation to be fitted of the diffusion trend function of the ith pollutant through the function values of the first distribution function and the second distribution function of the ith pollutant at a plurality of positions to obtain a solving value of the coefficient to be determined; obtaining a diffusion trend function of the ith pollutant according to the solution value and the equation to be fitted of the diffusion trend function of the ith pollutant;
Determining the addition position and the addition dose of the water treatment agent corresponding to various pollutants according to the diffusion trend function and the second distribution function, wherein the addition dose comprises the following steps: determining a content change function of the ith pollutant at each position in the sewage pool according to the second distribution function and the diffusion trend function; determining the content change rate of the ith pollutant at each position in the sewage pool according to the content change function of the ith pollutant at each position in the sewage pool; determining a change extremum position according to the content change rate of the ith pollutant at each position; determining the adding position and the adding dosage of the water treatment agent corresponding to the ith pollutant according to the change extremum position and the second distribution function;
Determining a change extremum position according to the content change rate of the ith pollutant at each position, wherein the change extremum position comprises: acquiring a plurality of undetermined positions with content change rate higher than a preset change rate threshold; carrying out connected domain analysis on the plurality of undetermined positions to obtain a plurality of connected domains; and determining the geometric center position of each connected domain as the variation extremum position.
2. The method of controlling the dosing of a water treatment agent according to claim 1, wherein determining a function of a change in the content of an ith contaminant at each location in a lagoon based on the second distribution function and the diffusion trend function, comprises: according to the formulaAnd determining a content change function of the ith pollutant at each position in the sewage pool, wherein f t,i (x, y, z) is a distribution function of the ith pollutant at a time t, alpha 1,i,F is a solution value of alpha 1,i, alpha 2,i,F is a solution value of alpha 2,i, and t is more than t 2.
3. The method of controlling addition of a water treatment chemical according to claim 1, wherein determining an addition position of a water treatment chemical corresponding to an i-th pollutant and an addition dose according to the change extremum position and the second distribution function, comprises: determining the coordinates of the j-th dosing position of the water treatment agent corresponding to the i-th pollutant as (x i,j,yi,j, 0), wherein (x i,j,yi,j,zi,j) is the j-th variation extremum position of the i-th pollutant; according to the formulaDetermining an adding dosage D i,j of a j-th adding position of the water treatment agent corresponding to the i-th pollutant, wherein omega i,j is a j-th communication domain of the i-th pollutant, k i is the dosage of the water treatment agent required by the i-th pollutant with unit content, j is less than or equal to M, M is the number of changing extreme value positions, and j and M are both positive integers; setting an M+1th addition position at any position except the addition positions corresponding to the M change extremum positions; according to the formula/>The dosing amount D i,M+1 at the m+1th dosing position of the water treatment agent corresponding to the i-th pollutant is determined.
4. A water treatment agent dosing control system for performing the method of any one of claims 1-3, comprising: the sewage treatment device comprises a sampling point setting module, a sewage treatment module and a sewage treatment module, wherein the sampling point setting module is used for setting a plurality of sampling points in a sewage pool at a first moment after sewage is added into the sewage pool and collecting first sewage samples of the plurality of sampling points; the first content information module is used for measuring first content information of various pollutants in the first sewage sample of each sampling point through the spectrometer; the first distribution function module is used for determining a first distribution function of the multiple pollutants in the sewage pool at a first moment according to the first content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the second content information module is used for collecting second sewage samples of a plurality of sampling points at a second moment after a preset time period, and measuring second content information of various pollutants in the second sewage samples of the sampling points through a spectrometer; the second distribution function module is used for determining a second distribution function of the multiple pollutants in the sewage pool at a second moment according to the second content information of the multiple pollutants and the position information of each sampling point in the sewage pool; the diffusion trend function module is used for determining diffusion trend functions of various pollutants according to a first distribution function and a second distribution function of the various pollutants in the sewage tank; the dosing position and dosing module is used for determining the dosing position and dosing amount of the water treatment agent corresponding to various pollutants according to the diffusion trend function and the second distribution function; the water treatment agent adding module is used for adding the water treatment agent into the sewage pool according to the adding positions and the adding doses of the water treatment agents corresponding to various pollutants.
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