A multi-stage flow adaptive ultraviolet disinfection method and system

Abstract

The present application relates to the technical field of disinfection, in particular to a multi-stage flow adaptive ultraviolet disinfection method and system. The water to be treated is divided into a low-flow stage total area and a high-flow stage total area through the flow parameter and water quality parameter of the water to be treated, so that the disinfection effect can be differentiated according to the flow and water quality, and the water in each area can be ensured to receive appropriate ultraviolet dose, so as to achieve the best disinfection effect. By calculating the attenuation coefficient of ultraviolet intensity, the actual intensity of ultraviolet in the water in the low-flow stage can be accurately determined. According to the first target ultraviolet intensity, the required dose of ultraviolet disinfection can be calculated to ensure that the ultraviolet in the water in the low-flow stage reaches sufficient energy. By calculating the ultraviolet intensity through the attenuation coefficient, the effect of ultraviolet in the fast-flowing water can be more accurately reflected, so that the ultraviolet disinfection system is more adaptable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of disinfection, in particular to a multi-stage flow adaptive ultraviolet disinfection method and system. BACKGROUND

[0002] Multi-stage water flow generally refers to the different stages of change in water flow due to different pipes when drinking water flows through different areas or pipes. The water treatment system can dynamically adjust the operation mode or disinfection intensity of the ultraviolet lamp to adapt to different flow requirements. Ultraviolet disinfection is an effective water treatment method. Its principle is to install ultraviolet lamps in the pipe. When the water flow passes through the ultraviolet lamp pipe, the pathogenic microorganisms in the water flow will be irradiated by the ultraviolet light released by the ultraviolet lamp, thereby destroying the DNA structure and achieving the effect of killing harmful microorganisms such as bacteria, viruses, and algae.

[0003] The most common ultraviolet disinfection method at present is an ultraviolet disinfection device. The ultraviolet disinfection device releases ultraviolet light to irradiate the water flow through the ultraviolet lamp, measures the water flow through the flow sensor, and then controls the power output of the ultraviolet lamp according to the real-time water flow. However, the relationship between water flow and ultraviolet disinfection dose is not a simple linear relationship. Simply controlling the ultraviolet power through the flow cannot improve the disinfection effect under all water quality and flow conditions. SUMMARY

[0004] The main purpose of the present application is to provide a multi-stage flow adaptive ultraviolet disinfection method and system, which aims to solve the technical problems in the prior art.

[0005] The present application provides a multi-stage flow adaptive ultraviolet disinfection method, which comprises:

[0006] Obtaining the parameter characteristics and water flow parameters of the water body conveying pipe to be treated, and dividing the water body conveying pipe to be treated into a low-flow stage total area and a high-flow stage total area according to the parameter characteristics and water flow parameters;

[0007] Obtaining the first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp in the low-flow stage total area, obtaining the first target ultraviolet intensity according to the first ultraviolet intensity attenuation coefficient, and obtaining the first ultraviolet disinfection requirement dose of the first ultraviolet lamp according to the first target ultraviolet intensity;

[0008] Obtaining the second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp in the high-flow stage total area, and obtaining the second target ultraviolet intensity according to the second ultraviolet intensity attenuation coefficient;

[0009] acquire a second ultraviolet disinfection requirement dose of the second ultraviolet lamp according to the reaction characteristic and the second target ultraviolet intensity;

[0010] perform disinfection treatment on the low-flow-stage total area and the high-flow-stage total area for a preset time length according to the first ultraviolet disinfection requirement dose and the second ultraviolet disinfection requirement dose respectively, and acquire a microorganism inactivation rate of the water body to be treated in real time;

[0011] determine whether the microorganism inactivation rate is greater than a preset inactivation rate;

[0012] if the microorganism inactivation rate is greater than the preset inactivation rate, determine that the disinfection effect of the water body to be treated meets the standard;

[0013] if the microorganism inactivation rate is not greater than the preset inactivation rate, determine that the disinfection effect of the water body to be treated does not meet the standard, and return to the step of performing disinfection treatment on the low-flow-stage total area and the high-flow-stage total area for a preset time length according to the first ultraviolet disinfection requirement dose and the second ultraviolet disinfection requirement dose respectively until the microorganism inactivation rate is greater than the preset inactivation rate.

[0014] Preferably, the step of dividing the water body conveying pipeline to be treated into the low-flow-stage total area and the high-flow-stage total area according to the parameter characteristic and the water body flow parameter comprises:

[0015] acquire a water body flow rate and instantaneous flow rates at a plurality of preset time points according to the water body flow parameter, and acquire an average flow rate according to the plurality of instantaneous flow rates;

[0016] acquire a flow standard deviation according to the average flow rate and the plurality of instantaneous flow rates, and acquire a flow fluctuation coefficient according to the flow standard deviation and the average flow rate;

[0017] acquire a pipeline diameter, a pipeline friction factor and a pipeline slope according to the parameter characteristic, and acquire a friction loss amount according to the pipeline diameter, the pipeline friction factor and the water body flow rate;

[0018] acquire a resistance loss coefficient according to the friction loss amount and the pipeline slope, and acquire a flow effect index according to the resistance loss coefficient and the flow fluctuation coefficient;

[0019] determine whether the flow effect index is greater than a preset threshold value;

[0020] if the flow effect index is not greater than the preset threshold value, determine that the corresponding water body area to be treated is the low-flow-stage total area;

[0021] if the flow effect index is greater than the preset threshold value, determine that the corresponding water body area to be treated is the high-flow-stage total area.

[0022] As preferred, the step of obtaining the first ultraviolet intensity decay coefficient of the total area in the low-flow stage includes:

[0023] obtaining historical ultraviolet intensity data of the total area in the low-flow stage, wherein the historical ultraviolet intensity data includes historical initial ultraviolet intensity of the ultraviolet source and historical ultraviolet intensity at a plurality of time points;

[0024] obtaining a contact time of water flow through the ultraviolet lamp according to each of the historical ultraviolet intensity, and calculating a corresponding ultraviolet intensity index according to each of the contact time, the historical ultraviolet intensity and the historical initial ultraviolet intensity, wherein the calculation formula is:

[0025]

[0026] wherein Z(SJ) i represents the i-th ultraviolet intensity index, J(CS) i represents the i-th contact time, S(ZQ) i represents the i-th historical ultraviolet intensity, i represents the serial number of the historical ultraviolet intensity, and C(ZQ) represents the historical initial ultraviolet intensity;

[0027] establishing a time-intensity index coordinate axis with the contact time as the X-axis and the ultraviolet intensity index as the Y-axis, and drawing each contact time corresponding ultraviolet intensity index as a connection point on the time-intensity index coordinate axis;

[0028] connecting a plurality of the connection points in sequence through a curve to obtain a time-intensity index curve, and obtaining the slope of the time-intensity index curve to obtain the first ultraviolet intensity decay coefficient.

[0029] As preferred, the step of obtaining the first target ultraviolet intensity according to the first ultraviolet intensity decay coefficient includes:

[0030] obtaining a water flow path volume, a turbulence correction factor and a wavelength adaptation coefficient of the total area in the low-flow stage, and obtaining an effective utilization rate according to the turbulence correction factor and the wavelength adaptation coefficient;

[0031] obtaining an instantaneous flow rate, and obtaining an equivalent disinfection efficiency according to the instantaneous flow rate and the effective utilization rate;

[0032] obtaining a minimum exposure duration according to the equivalent disinfection efficiency and the water flow path volume;

[0033] The real-time initial ultraviolet intensity and the first ultraviolet intensity attenuation coefficient of the total area during the low-flow phase are obtained. The first target ultraviolet intensity is calculated based on the real-time initial ultraviolet intensity, the first ultraviolet intensity attenuation coefficient, the minimum exposure time, the turbulence correction factor, and the wavelength adaptation coefficient. The calculation formula is as follows:

[0034]

[0035] Where M(ZQ) represents the first target ultraviolet intensity, S(CQ) represents the real-time initial ultraviolet intensity, B(SP) represents the wavelength adaptation coefficient, Z(SJ) represents the first ultraviolet intensity attenuation coefficient, C(XZ) represents the turbulence correction factor, and Z(BG) represents the minimum exposure time.

[0036] Preferably, the step of obtaining the second ultraviolet disinfection required dose based on the reaction characteristics and the second target ultraviolet intensity includes:

[0037] Based on the aforementioned reaction characteristics, the static absorption coefficient of ultraviolet radiation absorbed by the static water body in the total area during the high flow stage and the static propagation distance of ultraviolet radiation in the static water body in the total area during the high flow stage are obtained.

[0038] Obtain the water velocity and water depth of the total area during the high flow phase, and obtain the real-time dynamic absorption index based on the static absorption coefficient, water velocity, and water depth.

[0039] The real-time dynamic propagation distance is obtained based on the static propagation distance, water flow velocity, and water flow depth.

[0040] The diffusion index of ultraviolet radiation in the total area during the high-flow phase is obtained based on the real-time dynamic absorption coefficient and the real-time dynamic propagation distance.

[0041] The concentration of substances and the reaction rate constant in the total water body during the high flow stage are obtained, and the concentration change efficiency is obtained based on the concentration of substances, the reaction rate constant, and the second target ultraviolet intensity.

[0042] The intensity of the second target ultraviolet light is obtained, and the required dose of the second ultraviolet disinfection is obtained based on the intensity of the second target ultraviolet light, the diffusion index, and the concentration change efficiency.

[0043] Preferably, the step of disinfecting the total area in the low-flow stage and the total area in the high-flow stage for a preset duration according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose respectively includes:

[0044] Multiple first location information and second location information of the total area of ​​the low flow stage and the total area of ​​the high flow stage are obtained respectively, and the total area of ​​the low flow stage is divided into multiple low flow areas according to each first location information;

[0045] dividing the total high-flow area into a plurality of high-flow areas according to each of the second position information, and respectively acquiring a first length and a second length of each of the low-flow areas and the high-flow areas;

[0046] respectively acquiring a first total length and a second total length of the total low-flow area and the total high-flow area, and acquiring a first proportion of a corresponding low-flow area according to each of the first length and the first total length;

[0047] acquiring a second proportion of a corresponding high-flow area according to each of the second length and the second total length, and respectively acquiring a second demand of the corresponding high-flow area according to each of the second proportion and the second ultraviolet disinfection demand dose;

[0048] respectively acquiring a first demand of a corresponding low-flow area according to each of the first proportion and the first ultraviolet disinfection demand dose, and respectively disinfecting the corresponding low-flow area and the high-flow area for a preset time length according to each of the first demand and the second demand;

[0049] The application also provides a multi-stage flow adaptive ultraviolet disinfection system, comprising:

[0050] a division module, configured to acquire parameter characteristics and water flow parameters of a water body conveying pipeline to be processed, and divide the water body conveying pipeline to be processed into a total low-flow area and a total high-flow area according to the parameter characteristics and the water flow parameters;

[0051] a first acquisition module, configured to acquire a first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp tube in the total low-flow area, acquire a first target ultraviolet intensity according to the first ultraviolet intensity attenuation coefficient, and acquire a first ultraviolet disinfection demand dose of the first ultraviolet lamp tube according to the first target ultraviolet intensity;

[0052] a second acquisition module, configured to acquire a second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp tube in the total high-flow area, and acquire a second target ultraviolet intensity according to the second ultraviolet intensity attenuation coefficient;

[0053] a third acquisition module, configured to acquire a reaction characteristic of ultraviolet in the total high-flow area, and acquire a second ultraviolet disinfection demand dose according to the reaction characteristic and the second target ultraviolet intensity;

[0054] a disinfection module, configured to respectively disinfect the total low-flow area and the total high-flow area for a preset time length according to the first ultraviolet disinfection demand dose and the second ultraviolet disinfection demand dose, and acquire a microorganism inactivation rate of the water body to be processed in real time;

[0055] a judgment module configured to judge whether the microorganism inactivation rate is greater than a preset inactivation rate;

[0056] if the microorganism inactivation rate is greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated meets the standard;

[0057] if the microorganism inactivation rate is not greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated does not meet the standard, and the method returns to the step of performing disinfection treatment on the low-flow stage total area and the high-flow stage total area for a preset time according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose, until the microorganism inactivation rate is greater than the preset inactivation rate.

[0058] Preferably, the division module comprises:

[0059] a first acquisition unit configured to acquire water flow rate and instantaneous flow at a plurality of preset time points according to the water flow parameter, and acquire average flow according to a plurality of instantaneous flows;

[0060] a second acquisition unit configured to acquire flow standard deviation according to the average flow and the plurality of instantaneous flows, and acquire flow fluctuation coefficient according to the flow standard deviation and the average flow;

[0061] a third acquisition unit configured to acquire pipe diameter, pipe friction factor and pipe slope according to the parameter characteristics, and acquire friction loss according to the pipe diameter, the pipe friction factor and the water flow rate;

[0062] a fourth acquisition unit configured to acquire resistance loss coefficient according to the friction loss and the pipe slope, and acquire flow effect index according to the resistance loss coefficient and the flow fluctuation coefficient, and acquire water quality coefficient according to the flow effect index and the flow fluctuation coefficient;

[0063] a judgment and division unit configured to judge whether the flow effect index is greater than a preset threshold;

[0064] if the flow effect index is not greater than the preset threshold, it is determined that the corresponding water body area to be treated is a low-flow stage total area;

[0065] if the flow effect index is greater than the preset threshold, it is determined that the corresponding water body area to be treated is a high-flow stage total area.

[0066] The application also provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the multi-stage flow adaptive ultraviolet disinfection method when executing the computer program.

[0067] The application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the multi-stage flow adaptive ultraviolet disinfection method.

[0068] The application has the advantages that: the application divides the water body to be treated into a low-flow stage total area and a high-flow stage total area according to the flow parameter and the water quality parameter of the water body to be treated, so that the disinfection effect can be differentiated according to the flow and the water quality, and the water body in each area can be ensured to be subjected to appropriate ultraviolet radiation, so that the best disinfection effect is achieved, the actual intensity of the ultraviolet radiation in the water body in the low-flow stage can be accurately determined by calculating the attenuation coefficient of the ultraviolet intensity, so that excessive or insufficient irradiation is avoided, the required dose of the ultraviolet disinfection is calculated according to the first target ultraviolet intensity, so that the ultraviolet radiation in the water body in the low-flow stage can reach sufficient energy to inactivate pathogens in the water, without excessive consumption of resources, the intensity of the ultraviolet radiation is calculated according to the attenuation coefficient, so that the effect of the ultraviolet radiation in the fast-flowing water body can be more accurately reflected, and the ultraviolet radiation can be ensured to sufficiently contact the pathogens in the water flow in a short time, the intensity adjustment of the ultraviolet radiation based on the attenuation coefficient of the high-flow area makes the ultraviolet disinfection system more adaptive, the ultraviolet utilization rate in a short time can be improved by comprehensively considering the ultraviolet intensity, the reaction characteristics and the water flow, the disinfection effect is maximized, while the excessive consumption of the ultraviolet radiation is avoided, the required dose of the ultraviolet radiation in each stage is accurately calculated, so that the unreasonable setting of the ultraviolet power and the disinfection time is avoided, and the optimization of the disinfection effect is ensured, the disinfection process is more efficient, accurate and reliable by real-time monitoring of the microbial inactivation rate and flexible adjustment of the disinfection conditions, and the water treatment effect is optimized, while the energy saving and the adaptability of the system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0069] Figure 1 The method flowchart of an embodiment of the application.

[0070] Figure 2 The system structure schematic diagram of an embodiment of the application.

[0071] Figure 3 The internal structure schematic diagram of a computer device of an embodiment of the application.

[0072] The implementation of the application, the functional features and the advantages will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0073] It should be understood that the specific embodiments described herein are merely intended to explain the application, and are not intended to limit the application.

[0074] As Figures 1-3As shown, the present application provides a multi-stage flow adaptive ultraviolet disinfection method, comprising:

[0075] S1, obtaining the parameter characteristics and water flow parameters of the water body conveying pipeline to be treated, and dividing the water body conveying pipeline to be treated into a low flow stage total area and a high flow stage total area according to the parameter characteristics and water flow parameters;

[0076] S2, obtaining the first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp in the low flow stage total area, obtaining the first target ultraviolet intensity according to the first ultraviolet intensity attenuation coefficient, and obtaining the first ultraviolet disinfection required dose of the first ultraviolet lamp according to the first target ultraviolet intensity;

[0077] S3, obtaining the second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp in the high flow stage total area, and obtaining the second target ultraviolet intensity according to the second ultraviolet intensity attenuation coefficient;

[0078] S4, obtaining the reaction characteristics of ultraviolet in the high flow stage total area, and obtaining the second ultraviolet disinfection required dose of the second ultraviolet lamp according to the reaction characteristics and the second target ultraviolet intensity;

[0079] S5, performing disinfection treatment on the low flow stage total area and the high flow stage total area for a preset time length according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose respectively, and obtaining the microbial inactivation rate of the water body to be treated in real time;

[0080] S6, judging whether the microbial inactivation rate is greater than a preset inactivation rate;

[0081] If the microbial inactivation rate is greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated meets the standard;

[0082] If the microbial inactivation rate is not greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated does not meet the standard, and the step of performing disinfection treatment on the low flow stage total area and the high flow stage total area for a preset time length according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose respectively is returned to until the microbial inactivation rate is greater than the preset inactivation rate.

[0083] As described in steps S1-S6 above, the present application divides the water body conveying pipeline to be treated into a low-flow stage total area and a high-flow stage total area by the parameter characteristics of the water body conveying pipeline to be treated and the water body flow parameter. By dividing the area according to these parameters, the ultraviolet disinfection scheme can be adjusted according to the characteristics of each area, which enables the disinfection effect to be differentiated according to the flow (low flow and high flow) and the parameters of the conveying pipeline (such as diameter, friction, slope, etc.). Different water flow and pipeline parameters have different effects on ultraviolet disinfection. Dividing the area helps to avoid using excessive ultraviolet light in low-flow areas that do not require excessive disinfection, saving energy and cost. Through area division, the ultraviolet equipment can optimize the power output, ensuring that each area of the water body receives an appropriate ultraviolet dose, thereby achieving the best disinfection effect. The first target ultraviolet intensity is obtained by the first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp in the low-flow stage total area, and the first ultraviolet disinfection requirement dose of the first ultraviolet lamp is obtained according to the first target ultraviolet intensity. In the flow process of the water body, the intensity of the ultraviolet light is affected by various factors (such as water quality, suspended solids, etc.). By calculating the attenuation coefficient of the ultraviolet intensity, the actual intensity of the ultraviolet light in the low-flow stage water body can be accurately determined, avoiding excessive or insufficient irradiation. The ultraviolet intensity attenuation coefficient in the low-flow area is low, which means that the water flow is slow, and the ultraviolet light can act on the microorganisms in the water body for a long time. The accurately calculated ultraviolet intensity ensures the efficiency of the disinfection effect and avoids resource waste. By determining the specific target ultraviolet intensity, the ultraviolet equipment can achieve appropriate disinfection effect in the low-flow stage, preventing excessive or insufficient ultraviolet light from leading to unsatisfactory disinfection effect. The ultraviolet disinfection requirement dose is calculated according to the first target ultraviolet intensity, which can ensure that the ultraviolet light in the low-flow stage water body has enough energy to inactivate pathogens without excessive resource consumption. The second target ultraviolet intensity is obtained by the second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp in the high-flow stage total area. The second ultraviolet disinfection requirement dose of each second ultraviolet lamp is obtained by the reaction characteristics of the ultraviolet light in the high-flow stage total area and the second target ultraviolet intensity. In the high-flow stage, the water flow speed is fast, and the ultraviolet attenuation coefficient is usually high. Therefore, by calculating the ultraviolet intensity through the attenuation coefficient, the effect of the ultraviolet light in the fast-flowing water body can be more accurately reflected, ensuring that the ultraviolet light can fully contact the pathogens in the water flow in a short time. The water flow speed in the high-flow area is fast, and the ultraviolet irradiation time is short. Therefore, by obtaining the second target ultraviolet intensity, it can be ensured that the radiation intensity of the ultraviolet light is high enough to achieve the sterilization effect. The intensity adjustment based on the ultraviolet attenuation coefficient of the high-flow area makes the ultraviolet disinfection system more adaptable, allowing real-time adjustment according to different flow conditions to ensure the stability of the disinfection process. The dose requirement is adjusted by the reaction characteristics of the ultraviolet light in the area.The inactivation efficiency of ultraviolet rays on pathogens can be maximized. The reaction characteristics include the contact time of ultraviolet rays with microorganisms in the water body, the uniformity of radiation, and other factors. By adjusting the dosage requirement, the disinfection process can remain efficient even under high flow conditions. By considering the intensity of ultraviolet rays, reaction characteristics, and water flow, higher ultraviolet utilization can be achieved in a short time, maximizing the disinfection effect while avoiding excessive consumption of ultraviolet rays. The first and second ultraviolet disinfection requirement doses are used to preset the disinfection time for the low-flow stage total area and the high-flow stage total area, respectively. Changes in water flow and quality can affect the effectiveness of ultraviolet disinfection. The preset ultraviolet disinfection requirement dose can be adjusted according to the water conditions in different flow stages to ensure that the water body receives sufficient ultraviolet radiation under different flow rates. By accurately calculating the required ultraviolet dose for each stage, unreasonable settings of ultraviolet power and disinfection time are avoided, ensuring the optimization of disinfection effectiveness. The microbial inactivation rate of the water body to be treated is obtained in real time, and the microbial inactivation rate of the water body is monitored in real time, which can effectively avoid the problem of hysteresis in the disinfection process. By dynamically obtaining the inactivation rate, the disinfection process is controlled, potential disinfection deficiencies are detected in a timely manner, and the disinfection effectiveness of the water body to be treated is determined by comparing the microbial inactivation rate with the preset inactivation rate. If the microbial inactivation rate is greater than the preset inactivation rate, the disinfection effectiveness of the water body to be treated meets the standard. If the microbial inactivation rate is not greater than the preset inactivation rate, the disinfection effectiveness of the water body to be treated does not meet the standard, and the process returns to the step of presetting the disinfection time for the low-flow stage total area and the high-flow stage total area according to the first and second ultraviolet disinfection requirement doses, respectively, until the microbial inactivation rate is greater than the preset inactivation rate. If the actual inactivation rate does not meet the standard, the settings of the ultraviolet dose and irradiation time can be adjusted by returning to ensure continuous improvement of the disinfection process and avoid the water body from flowing into the use system without meeting the standard. Through multiple adjustments, the water body is always in a qualified state. By monitoring the microbial inactivation rate in real time and adjusting the disinfection conditions flexibly, the disinfection process is more efficient, accurate, and reliable, ultimately optimizing the water treatment effect and improving the energy saving and self-adaptive ability of the system. Avoiding water quality problems caused by insufficient disinfection effectiveness, increasing the reliability and accuracy of the disinfection process, and avoiding the problems of insufficient or excessive disinfection effectiveness caused by relying on fixed flow and ultraviolet power in traditional methods.

[0084] In one embodiment, the step S1 of dividing the water body to be treated into a low-flow stage total area and a high-flow stage total area according to the parameter characteristics and water flow parameters comprises:

[0085] S11, obtaining the water flow rate and the instantaneous flow at multiple preset time points according to the water flow parameter, and obtaining the average flow according to the multiple instantaneous flows;

[0086] S12, obtaining a flow standard deviation according to the average flow and the plurality of instantaneous flows, and obtaining a flow fluctuation coefficient according to the flow standard deviation and the average flow;

[0087] S13, obtaining a pipe diameter, a pipe friction factor and a pipe slope according to the parameter feature, and obtaining a friction loss amount according to the pipe diameter, the pipe friction factor and the water body flow rate;

[0088] S14, obtaining a resistance loss coefficient according to the friction loss amount and the pipe slope, and obtaining a flow effect index according to the resistance loss coefficient and the flow fluctuation coefficient;

[0089] S15, judging whether the flow effect index is greater than a preset threshold value;

[0090] If the flow effect index is not greater than the preset threshold value, it is determined that the corresponding water body region to be processed is a total region in a low flow stage;

[0091] If the flow effect index is greater than the preset threshold value, it is determined that the corresponding water body region to be processed is a total region in a high flow stage.

[0092] As described in steps S11-S15, the application obtains the instantaneous flow rate at multiple preset time points by the flow parameter, and obtains the average flow rate based on the multiple instantaneous flow rates, obtains the flow standard deviation based on the average flow rate and the multiple instantaneous flow rates, and obtains the instantaneous flow rate data at multiple time points, which can monitor the change of water flow in real time, which makes the system can flexibly respond to flow fluctuations, ensures that the disinfection effect of the ultraviolet lamp tube remains consistent under different flow conditions, calculating the average of multiple instantaneous flow rates can eliminate the interference of short-term fluctuations and obtain a stable flow value as a reference, the flow standard deviation can quantify the degree of flow fluctuation, by calculating the standard deviation, the amplitude of flow fluctuation can be better understood, so as to optimize the adjustment of ultraviolet power, ensure that sufficient ultraviolet dose can still be provided under the condition of large flow fluctuation to ensure water disinfection effect, and obtain the flow fluctuation coefficient based on the flow standard deviation and the average flow rate, the flow fluctuation coefficient compares the volatility of the flow with the average flow, so that the relative intensity of the flow change can be quantified, which provides a dynamic reference for the system, and the ultraviolet power can be adjusted more accurately to adapt to the fluctuation of water flow, to ensure that the disinfection effect will not be affected by the change of flow, the pipe diameter, pipe friction factor and pipe slope are obtained by the pipe parameter characteristics, the friction loss is obtained based on the pipe diameter, pipe friction factor and water flow rate, the resistance loss coefficient is obtained based on the friction loss and pipe slope, and the flow effect index is obtained based on the resistance loss coefficient and the flow fluctuation coefficient. In the traditional ultraviolet disinfection system, the relationship between the power of the ultraviolet lamp and the water flow is usually simplified as a linear relationship, however, in actual situation, factors such as water flow fluctuation, pipe resistance loss and flow rate change may affect the irradiation effect of ultraviolet, by analyzing the characteristics of the pipe (such as pipe diameter, friction factor, slope, etc.) and flow fluctuation, the power output of the ultraviolet lamp tube can be more accurately controlled to ensure that stable and effective disinfection dose can be provided under different flow conditions, by calculating the friction loss of the pipe, the resistance loss coefficient and the flow fluctuation coefficient, the power of the ultraviolet lamp tube can be dynamically adjusted to ensure the best disinfection effect under different flow and water quality conditions, the fluctuation of water flow may cause the change of ultraviolet irradiation intensity, and the relationship between the fluctuation coefficient and the flow directly affects the disinfection effect, by accurately calculating the flow effect index, the power of the ultraviolet lamp tube can be dynamically adjusted under different water quality and flow conditions, not only can adapt to different flow fluctuations, but also can optimize the ultraviolet irradiation amount to avoid unstable disinfection efficiency caused by too large or too small flow fluctuation, combined with pipe parameter characteristics (such as diameter, friction factor, slope, etc.) and flow fluctuation coefficient, etc. Data can not only ensure the optimal disinfection effect under various water quality and flow conditions, but also improve the stability, energy saving, intelligence and cost-effectiveness of the system, so that the ultraviolet disinfection system can maintain efficient and reliable operation in complex and dynamic environment,If the flow effect index is greater than the preset threshold, it is determined that the corresponding water body region to be treated is a high flow stage total region. According to the flow effect index, whether the water body enters a low flow stage or a high flow stage can help the ultraviolet system to determine the working mode. According to this determination, the system can automatically adjust the ultraviolet power and the disinfection strategy according to different flow stages. This dynamic adjustment mechanism ensures that the disinfection dose matches the water flow and water quality conditions, which not only ensures the disinfection effect in high flow, but also avoids unnecessary power waste in low flow.

[0093] In one embodiment, the step S2 of acquiring the first ultraviolet intensity attenuation coefficient of the low flow stage total region comprises:

[0094] S21, acquire historical ultraviolet intensity data of the low flow stage total region, wherein the historical ultraviolet intensity data comprises historical initial ultraviolet intensity of the ultraviolet source and historical ultraviolet intensity at multiple time points;

[0095] S22, according to each historical ultraviolet intensity, acquire the contact time of water flow through the ultraviolet lamp tube, and calculate the corresponding ultraviolet intensity index according to each contact time, historical ultraviolet intensity and historical initial ultraviolet intensity, wherein the calculation formula is:

[0096]

[0097] Wherein, Z(SJ) i represents the i-th ultraviolet intensity index, J(CS) i represents the i-th contact time, S(ZQ) i represents the i-th historical ultraviolet intensity, i represents the serial number of historical ultraviolet intensity, and C(ZQ) represents the historical initial ultraviolet intensity.

[0098] S23, establish a time-intensity index coordinate axis with the contact time as the X-axis and the ultraviolet intensity index as the Y-axis, and draw each contact time corresponding ultraviolet intensity index as a connection point on the time-intensity index coordinate axis.

[0099] S24, connect the multiple connection points in sequence by a curve to obtain a time-intensity index curve, and acquire the slope of the time-intensity index curve to obtain the first ultraviolet intensity attenuation coefficient.

[0100] As described in the above steps S21-S24, wherein the calculation formula of the ultraviolet intensity index is normalized to the parameters in advance to eliminate the dimensional difference between different variables, the purpose is to ensure that all variables are on the same order of magnitude, so that the calculation is more stable and effective, and the method of obtaining the second ultraviolet intensity attenuation coefficient is the same as that of the first ultraviolet intensity attenuation coefficient, the present application obtains the historical initial ultraviolet intensity of the ultraviolet source and the historical ultraviolet intensity at multiple time points through the historical ultraviolet intensity data of the total area in the low flow stage, obtains the contact time of the water flow through the ultraviolet lamp through each historical ultraviolet intensity, and calculates the corresponding ultraviolet intensity index according to each contact time, historical ultraviolet intensity and historical initial ultraviolet intensity, by studying the contact time of the water flow and the ultraviolet lamp, the time of the water flow exposed to ultraviolet light can be accurately understood, the contact time is closely related to the ultraviolet intensity, and different contact times may lead to significant differences in disinfection effect, especially in the case of water flow change, considering the contact time can more effectively control the disinfection effect, the ultraviolet intensity index is a comprehensive index, which can consider the factors such as ultraviolet intensity, historical intensity and contact time, and provide a quantitative standard for disinfection effect, calculating the ultraviolet intensity index can provide an objective and comparable data to help evaluate the ultraviolet disinfection effect under different conditions, so as to select the most suitable ultraviolet intensity and contact time for disinfection, taking the contact time as the X axis and the ultraviolet intensity index as the Y axis, a time-intensity index coordinate axis is established, and the ultraviolet intensity index corresponding to each contact time is plotted as a connection point on the time-intensity index coordinate axis, a plurality of connection points are sequentially connected by a curve to obtain a time-intensity index curve, and the slope of the time-intensity index curve is obtained to obtain the first ultraviolet intensity attenuation coefficient, by establishing the time-intensity index coordinate axis, each contact time and the corresponding ultraviolet intensity index can be intuitively displayed, which is convenient for identifying the influence of different contact times on the ultraviolet intensity, by drawing the ultraviolet intensity index curve, the relationship between the ultraviolet intensity and the contact time can be observed intuitively, the slope represents the rate of change of the ultraviolet intensity with the contact time, that is, the decay rate of the ultraviolet intensity, the acquisition of the decay coefficient helps to quantify the change rule of the ultraviolet intensity, and the determination of the decay coefficient of the ultraviolet intensity can optimize the disinfection process, ensure that the adjustment of the ultraviolet power can maintain the best disinfection effect under different water flow conditions, which helps to avoid the disinfection effect caused by simply relying on flow to control the ultraviolet power, ensure that the disinfection efficiency is maximized under the premise of not affecting the water quality, and avoid the disinfection incomplete caused by insufficient ultraviolet irradiation time or intensity.

[0101] In one embodiment, the step S2 of obtaining the first target ultraviolet intensity according to the first ultraviolet intensity attenuation coefficient comprises:

[0102] S25, obtain the flow path volume, the turbulence correction factor and the wavelength adaptation coefficient of the total area in the low-flow stage, and obtain the effective utilization rate according to the turbulence correction factor and the wavelength adaptation coefficient;

[0103] S26, obtain the instantaneous flow rate, and obtain the equivalent disinfection efficiency according to the instantaneous flow rate and the effective utilization rate;

[0104] S27, obtain the minimum exposure time according to the equivalent disinfection efficiency and the flow path volume;

[0105] S28, obtain the real-time initial ultraviolet intensity and the first ultraviolet intensity decay coefficient of the total area in the low-flow stage, and calculate the first target ultraviolet intensity according to the real-time initial ultraviolet intensity, the first ultraviolet intensity decay coefficient, the minimum exposure time, the turbulence correction factor and the wavelength adaptation coefficient, wherein the calculation formula is:

[0106]

[0107] Wherein, M(ZQ) represents the first target ultraviolet intensity, S(CQ) represents the real-time initial ultraviolet intensity, B(SP) represents the wavelength adaptation coefficient, Z(SJ) represents the first ultraviolet intensity decay coefficient, C(XZ) represents the turbulence correction factor, and Z(BG) represents the minimum exposure time.

[0108] As described in steps S25-S28, the calculation formula of the first target ultraviolet intensity is normalized to eliminate the dimensional differences between different variables, which aims to ensure that all variables are on the same order of magnitude, making the calculation more stable and effective. The way to obtain the second target ultraviolet intensity is the same as the first target ultraviolet intensity. The application obtains the total flow path volume of the low-flow stage, the turbulence correction factor, and the wavelength adaptation coefficient, and obtains the effective utilization rate according to the turbulence correction factor and the wavelength adaptation coefficient. By understanding the flow path volume, turbulence, and wavelength adaptation coefficient, the propagation effect of ultraviolet light in the water flow can be more accurately estimated. The turbulence correction factor takes into account the complexity of the water flow (such as uneven flow velocity), and the wavelength adaptation coefficient ensures that the wavelength of the ultraviolet light matches the water quality characteristics, improving the disinfection efficiency. Under different water quality and flow conditions, the flow path and flow characteristics are different, and the use of these correction factors can adapt to each situation to ensure that ultraviolet irradiation can maximize the disinfection effect. The turbulence correction factor and the wavelength adaptation coefficient can effectively evaluate the propagation efficiency of ultraviolet light, helping to calculate the effective utilization rate of ultraviolet light. This allows the system to optimize the power output of the ultraviolet lamp to adapt to different water flow and water quality conditions, improving energy efficiency. By optimizing the effective utilization rate, unnecessary areas can be avoided from excessive use of ultraviolet light, reducing energy waste and reducing operating costs. By obtaining the instantaneous flow rate and calculating the equivalent disinfection efficiency according to the instantaneous flow rate and the effective utilization rate, the water flow is a dynamic parameter, and the acquisition of the instantaneous flow rate can ensure that the system adjusts the disinfection efficiency according to the actual flow rate, avoiding unstable disinfection effects due to flow fluctuations. The equivalent disinfection efficiency is a comprehensive evaluation standard, and by adjusting the disinfection efficiency in real time, it can ensure that the intensity and duration of ultraviolet irradiation meet the predetermined disinfection standards under different water flow conditions, ensuring disinfection effectiveness. According to the equivalent disinfection efficiency and the flow path volume, the minimum exposure time is obtained. According to the flow path volume and the disinfection efficiency, the minimum exposure time is calculated to ensure that the water flow has enough time to be disinfected under ultraviolet irradiation, which helps to avoid insufficient ultraviolet exposure time due to fast water flow and ensures that the water quality disinfection effect meets the standards. By calculating the minimum exposure time, it can avoid long irradiation time, reduce energy waste, and ensure effective disinfection of water quality. By obtaining the real-time initial ultraviolet intensity and the first ultraviolet intensity decay coefficient of the total area in the low-flow stage, calculating the first target ultraviolet intensity according to the real-time initial ultraviolet intensity, the first ultraviolet intensity decay coefficient, the minimum exposure time, the turbulence correction factor, and the wavelength adaptation coefficient, and considering multiple factors such as ultraviolet intensity, decay coefficient, and minimum exposure time to calculate the target ultraviolet intensity, the ultraviolet intensity can be accurately controlled to ensure that it adapts to changes in water quality, flow, and other factors at each moment. By accurately controlling the ultraviolet intensity, it can ensure water quality disinfection while avoiding energy waste and improving the overall efficiency of the system.It can also reduce energy waste, optimize the service life of the ultraviolet lamp, and reduce the operation cost of the system.

[0109] In one embodiment, the step S4 of obtaining the second ultraviolet disinfection requirement dose according to the reaction characteristic and the second target ultraviolet intensity comprises:

[0110] S41, obtaining a static absorption coefficient of static water body absorbing ultraviolet light and a static propagation distance of ultraviolet light in the static water body in the total high-flow stage area according to the reaction characteristic;

[0111] S42, obtaining the water flow rate and the water flow depth of the total high-flow stage area, and obtaining a real-time dynamic absorption index according to the static absorption coefficient, the water flow rate and the water flow depth;

[0112] S43, obtaining a real-time dynamic propagation distance according to the static propagation distance, the water flow rate and the water flow depth;

[0113] S44, obtaining a diffusion degree index of ultraviolet light in the total high-flow stage area according to the real-time dynamic absorption index and the real-time dynamic propagation distance;

[0114] S45, obtaining the substance concentration and the reaction rate constant in the water body in the total high-flow stage area, and obtaining a concentration change efficiency according to the substance concentration and the reaction rate constant and the second target ultraviolet intensity;

[0115] S46, obtaining the second target ultraviolet intensity, and obtaining the second ultraviolet disinfection requirement dose according to the second target ultraviolet intensity, the diffusion degree index and the concentration change efficiency.

[0116] As described in steps S41-S46, the application obtains the static absorption coefficient of the static water body in the high-flow stage total area by acquiring the static absorption coefficient of the static water body in the high-flow stage total area, and the static propagation distance of the ultraviolet light in the static water body in the high-flow stage total area, by acquiring the water flow rate and the water flow depth of the high-flow stage total area, and obtaining the real-time dynamic absorption index according to the static absorption coefficient, the water flow rate and the water flow depth, and obtaining the real-time dynamic propagation distance according to the static propagation distance, the water flow rate and the water flow depth. The static absorption coefficient reflects the absorption characteristics of the water body to the ultraviolet light, and in the process of ultraviolet water treatment, the absorption capacity of the water body directly affects the effectiveness of the ultraviolet light. Obtaining this parameter can provide basic data for subsequent calculation of the ultraviolet dose, ensuring that the ultraviolet light can effectively penetrate the water body and play a disinfection role. The static propagation distance reflects the propagation range of the ultraviolet light in the water body, which directly affects the coverage effect of the ultraviolet light. In the case of large water flow or water body containing substances, the propagation distance of the ultraviolet light may be limited. By measuring the static propagation distance, the arrangement of the ultraviolet lamp and the distribution of the ultraviolet dose can be optimized to ensure that the disinfection effect reaches the expected value. The flow rate and the depth of the water body are the key factors of the dynamic characteristics of the water flow, which will affect the propagation effect of the ultraviolet light. Understanding the flow rate and the depth can help more accurately predict the disinfection effect of the ultraviolet light under different flow conditions in the design of the ultraviolet treatment system, avoiding insufficient or excessive ultraviolet irradiation. The dynamic absorption index is adjusted in real time according to the flow rate and the depth of the water body, as well as the static absorption coefficient, which can accurately calculate the ultraviolet absorption of the water body under actual flow conditions. Through the real-time dynamic absorption index, the absorption degree of the ultraviolet light in the water body can be better evaluated, and the working parameters of the ultraviolet lamp can be adjusted to ensure the disinfection effect. In the case of water flow, the propagation distance of the ultraviolet light may be different with the change of time and space. Through the calculation of the dynamic propagation distance, the propagation of the ultraviolet light in the water flow can be accurately predicted, so as to determine the ultraviolet dose distribution to adjust the power of the ultraviolet lamp, so as to improve the efficiency of the ultraviolet disinfection. The diffusion degree index of the ultraviolet light in the high-flow stage total area is obtained by the real-time dynamic absorption coefficient and the real-time dynamic propagation distance. The concentration change efficiency is obtained by obtaining the substance concentration and the reaction rate constant in the water body in the high-flow stage total area, and according to the substance concentration and the reaction rate constant and the second target ultraviolet intensity. The diffusion degree of the ultraviolet light directly affects its effect in the water flow. The diffusion degree index provides a quantitative index to help optimize the distribution of the ultraviolet light, ensuring that the ultraviolet light can cover the entire water body and maximize its disinfection efficiency. The calculation of the index helps to evaluate the ultraviolet diffusion characteristics under different flow conditions. The concentration of substances in the water (such as microorganisms or pollutants) directly affects the disinfection effect of the ultraviolet light. By obtaining these parameters, the time and intensity of the ultraviolet irradiation can be more accurately controlled, so as to achieve the ideal disinfection effect. The concentration change efficiency can quantify the reduction of the substance concentration in the ultraviolet treatment process. By calculating the concentration change efficiency, the effectiveness of the disinfection process can be monitored.Adjust the intensity and irradiation time of ultraviolet rays in time to ensure that the disinfection effect is maximized, obtain a second target ultraviolet intensity, and obtain a second ultraviolet disinfection requirement dose according to the second target ultraviolet intensity, the diffusion degree index, and the concentration change efficiency, the existing ultraviolet irradiation dose formula is irradiation dose = irradiation time * UVC intensity, but the present application can more accurately simulate the actual situation of the water flow by introducing a turbulence correction factor and a wavelength adaptation coefficient, reflect the influence of flow rate and wavelength, and thus obtain a more accurate ultraviolet disinfection requirement dose, and not only rely on static calculation, but also consider real-time water flow rate, water flow depth, ultraviolet intensity attenuation and other factors, and can dynamically adjust the ultraviolet disinfection requirement, because the absorption and propagation characteristics of water in the ultraviolet disinfection process have a great influence on the disinfection effect, by calculating the static absorption coefficient, static propagation distance, dynamic absorption index, dynamic propagation distance and the like, the propagation effect and absorption of ultraviolet in water can be more accurately evaluated, by further considering the concentration of substances in water and the reaction rate constant, the efficiency of the change of the concentration of substances in the ultraviolet disinfection process is evaluated, which makes the calculation of the ultraviolet disinfection dose more scientific, can better adapt to water bodies with different substance concentrations, avoid errors that may be caused by traditional methods, improve the efficiency and reliability of the ultraviolet disinfection system, accurately control the input amount of ultraviolet, ensure that the ultraviolet disinfection dose meets the requirements under the conditions of flow change and pollutant concentration fluctuation, help to achieve the best disinfection effect under various water quality and flow conditions, and improve the applicability and efficiency of ultraviolet water treatment technology.

[0117] In one embodiment, the step S5 of disinfecting the total low-flow stage area and the total high-flow stage area for a preset time according to the first ultraviolet disinfection requirement dose and the second ultraviolet disinfection requirement dose respectively, comprises:

[0118] S51, respectively obtaining a plurality of first position information and second position information of the total low-flow stage area and the total high-flow stage area, and dividing the total low-flow stage area into a plurality of low-flow areas according to each first position information;

[0119] S52, dividing the total high-flow stage area into a plurality of high-flow areas according to each second position information, and respectively obtaining a first length and a second length of each low-flow area and high-flow area;

[0120] S53, respectively obtaining a first total length and a second total length of the total low-flow stage area and the total high-flow stage area, and obtaining a first proportion of the corresponding low-flow area according to each first length and first total length;

[0121] S54, obtaining a second proportion of the corresponding high-flow area according to each of the second length and the second total length, and obtaining a second demand amount of the corresponding high-flow area according to each of the second proportion and a second ultraviolet disinfection demand dose respectively;

[0122] S55, obtaining a first demand amount of the corresponding low-flow area according to each of the first proportion and a first ultraviolet disinfection demand dose respectively, and performing disinfection on the corresponding low-flow area and the high-flow area for a preset time length according to each of the first demand amount and the second demand amount respectively.

[0123] As described in steps S101-S103, the present application can accurately divide the water flow area by collecting multiple first and second position information of the low-flow stage total area and the high-flow stage total area, ensuring that the UV irradiation can accurately act on the area that needs to be disinfected under different flow conditions. This subdivision helps to improve the accuracy of the system and adjust the disinfection dose according to the different needs of the flow. The division of the low-flow area allows the UV dose to be optimized according to the specific flow requirements during the low-flow stage. This fine division helps to avoid the phenomenon of excessive or insufficient UV irradiation, ensuring that each low-flow area and high-flow area receives appropriate UV irradiation, effectively improving the disinfection effect and ensuring that the disinfection effect is guaranteed under high-flow conditions. The first and second lengths of each low-flow area and high-flow area are obtained respectively. By obtaining the first and second total lengths of the low-flow stage total area and the high-flow stage total area, and obtaining the first proportion of the corresponding low-flow area according to each first length and first total length, and obtaining the second proportion of the corresponding high-flow area according to each second length and second total length, the specific length of each area can be obtained to more accurately control the irradiation time and intensity of the UV lamp tube. Length data helps to calculate the action area and irradiation time of UV, ensuring that the combination of disinfection dose and water flow is more scientific, reducing the problem of excessive use or insufficient use of UV. By obtaining the total length data, the overall UV power demand of the entire system can be optimized. By obtaining the proportion of the low-flow area and the high-flow area, the required UV dose of the area can be accurately calculated. The calculation of the proportion helps to determine the importance of each low-flow area in the overall disinfection process, avoiding waste of UV resources and ensuring reasonable energy allocation. Proportion data helps to reasonably arrange the disinfection time, avoid insufficient UV under high-flow conditions, and ensure that the area with large flow is fully irradiated. According to each second proportion and second UV disinfection demand dose, the second demand amount of the corresponding high-flow area is obtained. According to each first proportion and first UV disinfection demand dose, the first demand amount of the corresponding low-flow area is obtained. According to each first and second demand amount, the corresponding low-flow area and high-flow area are disinfected for a preset time. The demand amount of the high-flow area can accurately determine the required UV disinfection amount by combining the proportion and UV disinfection demand dose, which helps to achieve dynamic adjustment, allowing the disinfection system to adjust in real time according to the change of flow, avoiding excessive or insufficient UV irradiation, thereby improving the disinfection effect. The demand amount of the low-flow area is optimized by combining the proportion and UV disinfection demand dose.The adjustment ensures that the UV disinfection can achieve the best effect under low flow conditions, which helps to maximize the disinfection effect in low flow areas while reducing energy waste. By adjusting the preset disinfection time according to the demand, more accurate disinfection control can be achieved. For low flow and high flow areas, the system automatically adjusts the disinfection time to ensure that the UV disinfection effect is always maintained at the optimal state under different flow and water quality conditions, avoiding the poor disinfection effect caused by controlling the UV power according to the flow in the traditional method.

[0124] The application also provides a multi-stage flow adaptive UV disinfection system, comprising:

[0125] A division module is configured to obtain parameter characteristics and water flow parameters of a water body conveying pipeline to be treated, and divide the water body conveying pipeline to be treated into a low flow stage total area and a high flow stage total area according to the parameter characteristics and water flow parameters.

[0126] A first acquisition module is configured to obtain a first UV intensity attenuation coefficient of each first UV lamp tube in the low flow stage total area, obtain a first target UV intensity according to the first UV intensity attenuation coefficient, and obtain a first UV disinfection required dose of the first UV lamp tube according to the first target UV intensity.

[0127] A second acquisition module is configured to obtain a second UV intensity attenuation coefficient of each second UV lamp tube in the high flow stage total area, and obtain a second target UV intensity according to the second UV intensity attenuation coefficient.

[0128] A third acquisition module is configured to obtain a reaction characteristic of the UV in the high flow stage total area, and obtain a second UV disinfection required dose according to the reaction characteristic and the second target UV intensity.

[0129] A disinfection module is configured to perform disinfection treatment on the low flow stage total area and the high flow stage total area for a preset time according to the first UV disinfection required dose and the second UV disinfection required dose, respectively, and obtain a microorganism inactivation rate of the water body to be treated in real time.

[0130] A judgment module is configured to judge whether the microorganism inactivation rate is greater than a preset inactivation rate.

[0131] If the microorganism inactivation rate is greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated meets the standard.

[0132] If the microbial inactivation rate is not greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated does not meet the standard, and the step of performing the preset time length of disinfection treatment on the total area of the low-flow stage and the total area of the high-flow stage according to the first ultraviolet disinfection requirement dose and the second ultraviolet disinfection requirement dose is returned to until the microbial inactivation rate is greater than the preset inactivation rate.

[0133] In one embodiment, the division module comprises:

[0134] The first acquisition unit is configured to acquire the water flow rate and the instantaneous flow at a plurality of preset time points according to the water flow parameter, and acquire the average flow according to the plurality of instantaneous flows;

[0135] The second acquisition unit is configured to acquire the flow standard deviation according to the average flow and the plurality of instantaneous flows, and acquire the flow fluctuation coefficient according to the flow standard deviation and the average flow;

[0136] The third acquisition unit is configured to acquire the pipe diameter, the pipe friction factor and the pipe slope according to the parameter characteristics, and acquire the friction loss according to the pipe diameter, the pipe friction factor and the water flow rate;

[0137] The fourth acquisition unit is configured to acquire the resistance loss coefficient according to the friction loss and the pipe slope, and acquire the flow effect index concentration according to the resistance loss coefficient and the flow fluctuation coefficient, acquire the water quality coefficient according to the flow effect index concentration and the flow fluctuation coefficient, and acquire the flow effect index according to the water quality coefficient and the flow fluctuation coefficient;

[0138] The judgment division unit is configured to judge whether the flow effect index is greater than a preset threshold value;

[0139] If the flow effect index is not greater than the preset threshold value, it is determined that the corresponding water body region to be treated is the total area of the low-flow stage;

[0140] If the flow effect index is greater than the preset threshold value, it is determined that the corresponding water body region to be treated is the total area of the high-flow stage.

[0141] It should be noted that each module and unit in the multi-stage flow adaptive ultraviolet disinfection system corresponds to each step in the multi-stage flow adaptive ultraviolet disinfection method.

[0142] As shown in Figure 3 The present application also provides a computer device, which can be a server, and the internal structure thereof can be as shown in Figure 3The computer device includes a processor, a memory, a network interface and a database connected by a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the computer device is configured to store all data required by the process of the multi-stage flow adaptive ultraviolet disinfection method. The network interface of the computer device is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement the multi-stage flow adaptive ultraviolet disinfection method.

[0143] Those skilled in the art can understand that, Figure 3 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied.

[0144] The embodiment of the present application also provides a computer readable storage medium, which stores a computer program. The computer program is executed by the processor to implement any one of the multi-stage flow adaptive ultraviolet disinfection methods.

[0145] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to the memory, storage, database or other medium provided by the present application and used in the embodiments can include non-volatile and / or volatile memory. The non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. The volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM) and memory bus dynamic RAM (RDRAM) and the like.

[0146] It is to be understood that the terminology "including", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion such that process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0147] The above description is merely the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made according to the content of the present application specification and drawings, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A multi-stage flow-adaptive ultraviolet disinfection method, characterized in that, include: The parameters and flow parameters of the pipeline transporting the water to be treated are obtained, and the water flow velocity and instantaneous flow at multiple preset time points are obtained based on the water flow parameters, and the average flow is obtained based on the multiple instantaneous flow rates. The flow standard deviation is obtained based on the average flow rate and multiple instantaneous flow rates, and the flow fluctuation coefficient is obtained based on the flow standard deviation and the average flow rate. Based on the aforementioned parameter characteristics, the pipe diameter, pipe friction factor, and pipe slope are obtained, and the friction loss is obtained based on the aforementioned pipe diameter, pipe friction factor, and water flow velocity. The resistance loss coefficient is obtained based on the friction loss and the pipe slope, and the flow effect index is obtained based on the resistance loss coefficient and the flow fluctuation coefficient. Determine whether the flow effect index is greater than a preset threshold; If the flow effect index is not greater than the preset threshold, the corresponding water body area to be treated is determined to be the total area of ​​the low flow stage. If the flow effect index is greater than the preset threshold, the corresponding water body area to be treated is determined to be the total area of ​​the high flow stage. The first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp tube in the total area of ​​the low flow stage is obtained, the water flow path volume, turbulence correction factor and wavelength adaptation coefficient of the total area of ​​the low flow stage are obtained, and the effective utilization rate is obtained according to the turbulence correction factor and wavelength adaptation coefficient. Obtain the instantaneous flow rate and obtain the equivalent disinfection efficiency based on the instantaneous flow rate and effective utilization rate; The minimum exposure time is obtained based on the equivalent disinfection efficiency and the water flow path volume. The real-time initial UV intensity and the first UV intensity attenuation coefficient of the total area during the low-flow phase are obtained. The first target UV intensity is calculated based on the normalized real-time initial UV intensity, the first UV intensity attenuation coefficient, the minimum exposure time, the turbulence correction factor, and the wavelength adaptation coefficient. The calculation formula is as follows: ； Where M(ZQ) represents the first target ultraviolet intensity, S(CQ) represents the real-time initial ultraviolet intensity, B(SP) represents the wavelength adaptation coefficient, Z(SJ) represents the first ultraviolet intensity attenuation coefficient, C(XZ) represents the turbulence correction factor, and Z(BG) represents the minimum exposure time. The first ultraviolet disinfection dose required for the first ultraviolet lamp is obtained based on the first target ultraviolet intensity. The second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp tube in the total area of ​​the high flow stage is obtained, and the second target ultraviolet intensity is obtained according to the second ultraviolet intensity attenuation coefficient. The method for obtaining the second target ultraviolet intensity is the same as the method for obtaining the first target ultraviolet intensity. The reaction characteristics of ultraviolet radiation in the total area during the high flow stage are obtained, and the static absorption coefficient of ultraviolet radiation absorbed by the static water body in the total area during the high flow stage and the static propagation distance of ultraviolet radiation in the static water body in the total area during the high flow stage are obtained based on the reaction characteristics. The reaction characteristics include the contact time between ultraviolet radiation and microorganisms in the water body and the radiation uniformity. Obtain the water velocity and water depth of the total area during the high flow phase, and obtain the real-time dynamic absorption index based on the static absorption coefficient, water velocity, and water depth. The real-time dynamic propagation distance is obtained based on the static propagation distance, water flow velocity, and water flow depth. The diffusion index of ultraviolet radiation in the total area during the high-flow phase is obtained based on the real-time dynamic absorption coefficient and the real-time dynamic propagation distance. The concentration of substances and the reaction rate constant in the total water body during the high flow stage are obtained, and the concentration change efficiency is obtained based on the concentration of substances, the reaction rate constant, and the second target ultraviolet intensity. Obtain the intensity of the second target ultraviolet light, and obtain the required dose of the second ultraviolet disinfection based on the intensity of the second target ultraviolet light, the diffusion index, and the concentration change efficiency; Disinfection treatments for preset durations were performed on the total area in the low flow stage and the total area in the high flow stage according to the first and second ultraviolet disinfection required doses, respectively, and the microbial inactivation rate of the water body to be treated was obtained in real time. Determine whether the microbial inactivation rate is greater than the preset inactivation rate; If the microbial inactivation rate is greater than the preset inactivation rate, the disinfection effect of the water to be treated is determined to be up to standard; If the microbial inactivation rate is not greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated has not met the standard, and the process returns to the step of disinfecting the total area of ​​the low flow stage and the total area of ​​the high flow stage for a preset duration according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose, until the microbial inactivation rate is greater than the preset inactivation rate.

2. The multi-stage flow-adaptive ultraviolet disinfection method according to claim 1, characterized in that, The step of obtaining the first ultraviolet intensity attenuation coefficient of the total region during the low-flow phase includes: Acquire historical ultraviolet intensity data for the total area during the low-flow phase, wherein the historical ultraviolet intensity data includes the historical initial ultraviolet intensity of the ultraviolet source and the historical ultraviolet intensity at multiple time points; The contact time of the water flow through the ultraviolet lamp is obtained according to each historical ultraviolet intensity, and the corresponding ultraviolet intensity index is calculated based on each contact time, historical ultraviolet intensity, and historical initial ultraviolet intensity, wherein the calculation formula is: ； Among them, Z(SJ) i Let J(CS) represent the i-th ultraviolet radiation intensity index. i Let S(ZQ) represent the i-th contact time. i Let C(ZQ) represent the i-th historical ultraviolet intensity, where i represents the index of the historical ultraviolet intensity, and C(ZQ) represents the initial historical ultraviolet intensity. With contact time as the X-axis and ultraviolet intensity index as the Y-axis, a time-intensity index coordinate axis is established, and the ultraviolet intensity index corresponding to each contact time is plotted on the time-intensity index coordinate axis as the connection point. By sequentially connecting multiple connection points with a curve, a time intensity index curve is obtained, and the slope of the time intensity index curve is obtained to obtain the first ultraviolet intensity attenuation coefficient. The method for obtaining the second ultraviolet intensity attenuation coefficient is the same as the method for obtaining the first ultraviolet intensity attenuation coefficient.

3. The multi-stage flow-adaptive ultraviolet disinfection method according to claim 1, characterized in that, The step of disinfecting the total area in the low-flow stage and the total area in the high-flow stage for a preset duration according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose respectively includes: Multiple first location information and second location information of the total area of ​​the low flow stage and the total area of ​​the high flow stage are obtained respectively, and the total area of ​​the low flow stage is divided into multiple low flow areas according to each first location information; The total area of ​​the high-flow stage is divided into multiple high-flow areas based on each of the second location information, and the first length and second length of each of the low-flow and high-flow areas are obtained respectively. The first total length and the second total length of the total region in the low-flow stage and the total region in the high-flow stage are obtained respectively, and the first proportion of the corresponding low-flow region is obtained according to each first length and the first total length; The second proportion of the corresponding high flow area is obtained according to each of the second lengths and the second total length, and the second demand amount of the corresponding high flow area is obtained according to each of the second proportions and the second ultraviolet disinfection demand dose. Based on each of the first proportions and the first ultraviolet disinfection required dose, the first demand amount for the corresponding low flow area is obtained, and the power of the corresponding first ultraviolet lamp and the second ultraviolet lamp is adjusted according to each of the first demand amount and the second demand amount, and disinfection is performed for a preset duration.

4. A multi-stage flow-adaptive ultraviolet disinfection system, characterized in that, include: The segmentation module is used to obtain the parameter characteristics of the pipeline transporting the water to be treated and the water flow parameters, including: The first acquisition unit is used to acquire the water flow velocity and the instantaneous flow rate at multiple preset time points based on the water flow parameters, and to acquire the average flow rate based on the multiple instantaneous flow rates. The second acquisition unit is used to acquire the flow standard deviation based on the average flow and multiple instantaneous flow, and to acquire the flow fluctuation coefficient based on the flow standard deviation and the average flow. The third acquisition unit is used to acquire the pipe diameter, pipe friction factor and pipe slope according to the parameter characteristics, and to acquire the friction loss according to the pipe diameter, pipe friction factor and water flow velocity. The fourth acquisition unit is used to acquire the resistance loss coefficient based on the friction loss and the pipe slope, and to acquire the flow effect index concentration based on the resistance loss coefficient and the flow fluctuation coefficient to acquire the water quality coefficient, and to acquire the flow effect index based on the water quality coefficient and the flow fluctuation coefficient. A judgment division unit is used to determine whether the flow effect index is greater than a preset threshold. If the flow effect index is not greater than the preset threshold, the corresponding water body area to be treated is determined to be the total area of ​​the low flow stage. If the flow effect index is greater than the preset threshold, the corresponding water body area to be treated is determined to be the total area of ​​the high flow stage. The first acquisition module is used to acquire the first ultraviolet intensity attenuation coefficient of each first ultraviolet lamp tube in the total area of ​​the low flow stage, acquire the water flow path volume, turbulence correction factor and wavelength adaptation coefficient of the total area of ​​the low flow stage, and acquire the effective utilization rate based on the turbulence correction factor and wavelength adaptation coefficient. Obtain the instantaneous flow rate and obtain the equivalent disinfection efficiency based on the instantaneous flow rate and effective utilization rate; The minimum exposure time is obtained based on the equivalent disinfection efficiency and the water flow path volume. The real-time initial UV intensity and the first UV intensity attenuation coefficient of the total area during the low-flow phase are obtained. The first target UV intensity is calculated based on the normalized real-time initial UV intensity, the first UV intensity attenuation coefficient, the minimum exposure time, the turbulence correction factor, and the wavelength adaptation coefficient. The calculation formula is as follows: ； Where M(ZQ) represents the first target ultraviolet intensity, S(CQ) represents the real-time initial ultraviolet intensity, B(SP) represents the wavelength adaptation coefficient, Z(SJ) represents the first ultraviolet intensity attenuation coefficient, C(XZ) represents the turbulence correction factor, and Z(BG) represents the minimum exposure time. The first ultraviolet disinfection dose required for the first ultraviolet lamp is obtained based on the first target ultraviolet intensity. The second acquisition module is used to acquire the second ultraviolet intensity attenuation coefficient of each second ultraviolet lamp tube in the total area of ​​the high flow stage, and to acquire the second target ultraviolet intensity based on the second ultraviolet intensity attenuation coefficient. The method for acquiring the second target ultraviolet intensity is the same as the method for acquiring the first target ultraviolet intensity. The third acquisition module is used to acquire the reaction characteristics of ultraviolet light in the total area during the high flow stage, and to acquire the static absorption coefficient of ultraviolet light absorbed by the static water body in the total area during the high flow stage and the static propagation distance of ultraviolet light in the static water body in the total area during the high flow stage based on the reaction characteristics. The reaction characteristics include the contact time between ultraviolet light and microorganisms in the water body and the radiation uniformity. Obtain the water velocity and water depth of the total area during the high flow phase, and obtain the real-time dynamic absorption index based on the static absorption coefficient, water velocity, and water depth. The real-time dynamic propagation distance is obtained based on the static propagation distance, water flow velocity, and water flow depth. The diffusion index of ultraviolet radiation in the total area during the high-flow phase is obtained based on the real-time dynamic absorption coefficient and the real-time dynamic propagation distance. The concentration of substances and the reaction rate constant in the total water body during the high flow stage are obtained, and the concentration change efficiency is obtained based on the concentration of substances, the reaction rate constant, and the second target ultraviolet intensity. Obtain the intensity of the second target ultraviolet light, and obtain the required dose of the second ultraviolet disinfection based on the intensity of the second target ultraviolet light, the diffusion index, and the concentration change efficiency; The disinfection module is used to perform disinfection treatment on the total area of ​​the low flow stage and the total area of ​​the high flow stage for a preset duration according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose, and to obtain the microbial inactivation rate of the water to be treated in real time. The judgment module is used to determine whether the microbial inactivation rate is greater than a preset inactivation rate; If the microbial inactivation rate is greater than the preset inactivation rate, the disinfection effect of the water to be treated is determined to be up to standard; If the microbial inactivation rate is not greater than the preset inactivation rate, it is determined that the disinfection effect of the water body to be treated has not met the standard, and the process returns to the step of disinfecting the total area of ​​the low flow stage and the total area of ​​the high flow stage for a preset duration according to the first ultraviolet disinfection required dose and the second ultraviolet disinfection required dose, until the microbial inactivation rate is greater than the preset inactivation rate.

5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.

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