Wastewater treatment dosing system suitable for flocculation separation and sedimentation tank of wastewater

Abstract

This invention relates to the field of wastewater treatment and addresses the problem of the inability to automatically adjust the flocculant dosage according to the specific wastewater conditions. Specifically, it is a wastewater treatment dosing system applicable to wastewater flocculation separation sedimentation tanks. In this invention, data on the wastewater to be treated and external environmental interference factors are collected. The flocculant dosage is generated through dynamic model simulation. The flocculation results are then analyzed to determine if the flocculant dosage is sufficient, preventing insufficient flocculant addition. The simulation model for flocculant dosage is automatically corrected and adjusted. Simultaneously, the wastewater flocculation process is monitored, and analysis is performed to determine if excessive flocculant is added, preventing over-dosing. This achieves the goal of automatically dispensing the appropriate amount of flocculant according to wastewater treatment needs and automatically optimizing the accuracy of the flocculant dosage simulation, thereby improving the intelligence level of the wastewater treatment dosing process.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, specifically to a wastewater treatment dosing system suitable for wastewater flocculation separation sedimentation tanks. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. There are many methods for treating wastewater, which can generally be summarized as physical methods, chemical methods, and biological methods. Most current wastewater treatment methods combine physical and chemical methods. That is, flocculants are first added to the wastewater to react with the pollutants in the wastewater to produce particles or flocs. Then, the wastewater is settled in a sedimentation tank or other container to obtain relatively clean water.

[0003] Currently, the existing patent document CN206266295U discloses a technical solution that achieves automatic flocculant dosing through a storage chamber and an extruder. The dosing effect is faster and more accurate than manual dosing, improving the drawbacks of human error in the flocculant dosing process. However, the flocculant dosing in this solution is still based on a preset amount. When different amounts of flocculant need to be added, manual adjustment is still required. It cannot automatically analyze the situation based on the wastewater treatment, thus failing to achieve the effect of intelligent control of flocculant dosing.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] In this invention, the wastewater to be treated and the external environmental interference factors of wastewater treatment are collected, and the flocculant addition amount is generated through dynamic model simulation. This enables automatic and appropriate flocculant dosing according to the needs of wastewater treatment, improving the intelligence level of the wastewater treatment dosing process and solving the problem that the flocculant dosing amount cannot be automatically adjusted according to the wastewater conditions. Therefore, a wastewater treatment dosing system suitable for wastewater flocculation separation sedimentation tank is proposed.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A wastewater treatment dosing system suitable for wastewater flocculation separation sedimentation tanks includes an action analysis unit, which is used to collect data on the action environment during wastewater treatment, simulate the action environment based on the collected data, and obtain the initial flocculation ratio.

[0008] Wastewater collection unit, which is used to acquire the average wastewater pollution level and wastewater volume, and to analyze the wastewater pollution level and wastewater volume to obtain the wastewater treatment capacity;

[0009] The dosing control unit obtains the wastewater treatment volume through the wastewater acquisition unit, obtains the initial flocculation ratio through the action analysis unit, and simulates the wastewater treatment volume and the initial flocculation ratio to obtain the dosing amount;

[0010] The wastewater separation unit is used to statistically analyze the wastewater after flocculation, obtain the average value of the effluent pollution, analyze the flocculation effect based on the average value of the effluent pollution, obtain the dosing correction factor, and correct the dosing amount of the dosing control unit through the dosing correction factor.

[0011] The data statistics unit monitors the wastewater flocculation process online, generates a dosing correction factor based on the online monitoring process and historical data, and corrects the dosing amount of the dosing control unit using the dosing correction factor.

[0012] In a preferred embodiment of the present invention, when the action analysis unit collects data on the action environment, it first collects the temperature of the wastewater in the wastewater flocculation separation sedimentation tank and records it as the initial temperature of the wastewater, and collects the acidity and alkalinity of the wastewater in the wastewater flocculation separation sedimentation tank and records it as the initial acidity and alkalinity. Subsequently, the wastewater temperature and wastewater acidity and alkalinity are collected at certain time intervals and recorded as the process temperature and process acidity and alkalinity.

[0013] The action analysis unit imports the initial temperature and initial pH into the preset flocculant action model, generates the initial flocculation ratio through the preset flocculant model, and sends the initial flocculation ratio to the dosing control unit.

[0014] In a preferred embodiment of the present invention, the wastewater collection unit obtains the wastewater volume through a flow meter and collects wastewater pollution data through an online automatic wastewater analyzer. The collected wastewater pollution data includes nitrogen and phosphorus content, total organic matter content, heavy metal ion content, and suspended particulate content in the wastewater. The wastewater collection unit assigns different weight thresholds to different data in the wastewater pollution data and calculates the average wastewater pollution value by weighted averaging.

[0015] The wastewater collection unit calculates the wastewater treatment capacity by multiplying the wastewater volume and the average wastewater pollution value using a formula. The wastewater collection unit then sends the wastewater treatment capacity to the dosing control unit.

[0016] In a preferred embodiment of the present invention, the dosing control unit substitutes the wastewater treatment volume and the initial flocculation ratio into a preset dosing ratio model to calculate the dosing amount, and releases the flocculant according to the dosing amount.

[0017] In a preferred embodiment of the present invention, the wastewater separation unit collects wastewater pollution data during the process of discharging wastewater.

[0018] The wastewater separation unit performs a weighted average calculation on the pollution data during the drainage process to obtain the average pollution value of the drainage. The wastewater separation unit compares the average pollution value of the drainage with a preset pollution threshold. If the average pollution value of the drainage is less than the preset pollution threshold, a flocculation qualified signal is generated. If the average pollution value of the drainage is greater than or equal to the preset pollution threshold, a flocculation failed signal is generated.

[0019] In a preferred embodiment of the present invention, after the wastewater separation unit generates a flocculation failure signal, it sends the flocculation failure signal and the average value of wastewater pollution to the dosing control unit. After obtaining the average value of wastewater pollution, the dosing control unit calculates the difference between the average value of wastewater pollution and a preset pollution threshold, and records it as the flocculation difference. The dosing control unit calculates the ratio of the flocculation difference to the average value of wastewater pollution and records it as the difference ratio.

[0020] The dosing control unit imports the process temperature and process pH into the preset flocculant action model through the action analysis unit to obtain the process flocculation ratio. The dosing control unit compares the process flocculation ratio with the initial flocculation ratio. If the process flocculation ratio is less than the initial flocculation ratio, it is recorded as a process difference point. The dosing control unit calculates the proportion of the number of process difference points in the total number of process flocculation ratios to obtain the process difference ratio.

[0021] The dosing control unit generates a dosing correction factor θ by using the difference ratio and the process difference ratio. The dosing control unit then corrects the dosing ratio model using the dosing correction factor to obtain the corrected dosing ratio model.

[0022] In a preferred embodiment of the present invention, after generating a flocculation qualified signal, the wastewater separation unit sends the flocculation qualified signal and the average value of wastewater pollution to the data statistics unit. The data statistics unit can also collect pollution data in real time during the wastewater flocculation process to obtain the average value of process pollution.

[0023] The data statistics unit generates a flocculation completion signal when the average pollution value of the process is first less than the preset pollution threshold. The data statistics unit calculates the time from the addition of flocculant to the generation of the flocculation completion signal and records it as the flocculation completion time. The data statistics unit calculates the difference between the flocculation completion time and the preset processing time to obtain the time difference. If the difference is greater than or equal to the preset value, an early flocculation signal is generated.

[0024] In a preferred embodiment of the present invention, the data statistics unit retrieves the time difference value of sewage treatment in the historical sewage flocculation separation sedimentation tank through the database, takes the current time difference value and the i adjacent time difference values ​​in the historical data as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After obtaining the dosing correction factor β, the dosing control unit corrects the dosing ratio model again through the dosing correction factor β.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In this invention, during wastewater treatment, the wastewater to be treated and the external environmental interference factors of wastewater treatment are collected, the collected results are quantitatively analyzed to obtain quantitative data, and then the quantitative data is processed by dynamic model simulation to generate the simulated flocculant addition amount, thereby realizing the automatic addition of flocculant according to the needs of wastewater treatment, improving the intelligence level of the wastewater treatment dosing process.

[0027] 2. In this invention, the results of sewage flocculation are detected, and the sewage treatment is determined to meet the standards based on the sewage flocculation results. Then, it is determined whether the amount of flocculant added is sufficient. When the amount of flocculant added is insufficient, the simulation model of the amount of flocculant added is automatically corrected and adjusted, so that the simulation model of the amount of flocculant added can realize machine learning and automatic optimization functions in use, thereby improving the intelligent dosing effect.

[0028] 3. In this invention, the wastewater flocculation process is monitored, and the flocculation effect and completion time are analyzed based on the changes in wastewater during the flocculation process. The completion time and effect are used to analyze whether the flocculant is added in excess, so as to avoid the negative impact of excessive flocculant addition leading to increased economic costs and new pollution caused by excess flocculant in wastewater. Attached Figure Description

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a system block diagram of the present invention;

[0031] Figure 2 This is a flowchart of the method of the present invention. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] Please see Figure 1 - Figure 2 As shown, a wastewater treatment dosing system suitable for wastewater flocculation separation sedimentation tanks includes an action analysis unit, a wastewater acquisition unit, a dosing control unit, a wastewater separation unit, and a data statistics unit. The wastewater acquisition unit collects wastewater entering the flocculation separation sedimentation tank using a flow meter to obtain the volume of wastewater entering the tank. Simultaneously, an online automatic wastewater analyzer collects pollution data of the wastewater entering the tank. The collected pollution data includes nitrogen and phosphorus content (A), total organic matter content (B), heavy metal ion content (C), and suspended particulate matter content (D). The wastewater acquisition unit assigns different weight thresholds (a1, a2, a3, a4) to different data points in the pollution data and calculates the average pollution value (J) through weighted averaging.

[0035] The wastewater acquisition unit records the wastewater volume as V and the average wastewater pollution value as J. The wastewater treatment capacity W is obtained by multiplying and combining the values ​​using the formula q*V*J. The wastewater acquisition unit then sends the wastewater treatment capacity to the dosing control unit.

[0036] The action analysis unit collects data on the action environment of wastewater treatment chemicals at regular intervals. When collecting data on the action environment of wastewater treatment chemicals, the temperature of the wastewater in the wastewater flocculation separation sedimentation tank is first collected and recorded as the initial temperature of the wastewater. The action analysis unit also collects data on the pH of the wastewater in the wastewater flocculation separation sedimentation tank and records it as the initial pH.

[0037] The action analysis unit imports the initial temperature and initial pH into the preset flocculant action model, obtains the initial flocculation ratio of the flocculant under the initial temperature and initial pH environment through the flocculant preset model, and then sends the initial flocculation ratio to the dosing control unit.

[0038] After obtaining the wastewater treatment volume and initial flocculation ratio, the dosing control unit inputs the wastewater treatment volume and initial flocculation ratio into the preset dosing ratio model for calculation to obtain the dosing amount. Based on the dosing amount, the flocculant is released to purify the wastewater in the wastewater flocculation separation sedimentation tank through an appropriate proportion of flocculant.

[0039] Example 2:

[0040] Please see Figure 1 - Figure 2 As shown, the wastewater separation unit discharges the wastewater after flocculation and sedimentation. During the discharge process, wastewater pollution data is collected again, and the pollution data during the drainage process is weighted and averaged again to obtain the average value of the drainage pollution. The wastewater separation unit compares the average value of the drainage pollution with the preset pollution threshold. If the average value of the drainage pollution is less than the preset pollution threshold, a flocculation qualified signal is generated. If the average value of the drainage pollution is greater than or equal to the preset pollution threshold, a flocculation failed signal is generated.

[0041] After generating a flocculation failure signal, the wastewater separation unit sends the flocculation failure signal and the average value of wastewater pollution to the dosing control unit. After obtaining the average value of wastewater pollution, the dosing control unit calculates the difference between the average value of wastewater pollution and the preset pollution threshold, and records it as the flocculation difference. The dosing control unit calculates the ratio of the flocculation difference to the average value of wastewater pollution, and records it as the difference ratio Cb.

[0042] The dosing control unit obtains the temperature and pH changes during the flocculation process through the action analysis unit, obtaining multiple sets of process temperature and pH values. The dosing control unit imports the process temperature and pH values ​​into the preset flocculant action model to obtain the flocculation ratio of the flocculant under the process temperature and pH conditions, which is recorded as the process flocculation ratio. The dosing control unit compares the process flocculation ratio with the initial flocculation ratio. If the process flocculation ratio is greater than or equal to the initial flocculation ratio, no reaction is taken. If the process flocculation ratio is less than the initial flocculation ratio, it is recorded as a process difference point.

[0043] The dosing control unit counts all process differences and calculates the proportion of the number of process differences in the total number of flocculation ratios of all processes, thus obtaining the process difference ratio Gb.

[0044] The dosing control unit generates a dosing correction factor θ using a formula. Where k is a preset coefficient, the dosing control unit corrects the dosing ratio model through the dosing correction factor, obtains the corrected dosing ratio model, and uses the corrected dosing ratio model as the calculation model for subsequent wastewater flocculation sedimentation separation.

[0045] Example 3:

[0046] Please see Figure 1 - Figure 2 As shown, after generating a flocculation qualification signal, the wastewater separation unit sends the flocculation qualification signal and the average value of wastewater pollution to the data statistics unit. During the wastewater flocculation process, the data statistics unit collects real-time pollution data of the wastewater in the wastewater flocculation separation sedimentation tank, and calculates the average value of pollution during the treatment process based on the collected wastewater pollution data, which is recorded as the process pollution average value.

[0047] The data statistics unit compares the average pollution values ​​of multiple processes with a preset pollution threshold in chronological order. When the average pollution value of the process is less than the preset pollution threshold for the first time, a flocculation completion signal is generated. The data statistics unit calculates the time from the addition of flocculant to the generation of the flocculation completion signal and records it as the flocculation completion time. The data statistics unit calculates the difference between the flocculation completion time and the preset processing time to obtain the time difference. If the difference is greater than or equal to the preset value, an early flocculation signal is generated. If the difference is less than the preset value, a delayed flocculation signal is generated.

[0048] The data statistics unit does not react after generating the flocculation delay signal;

[0049] After generating the flocculation advance signal, the data statistics unit connects to the database, records the time difference, and retrieves the time difference values ​​from historical wastewater treatment in the flocculation separation sedimentation tank. It then statistically analyzes the current time difference with the i adjacent time differences in the historical data, uses the statistically analyzed multiple time differences as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After obtaining the dosing correction factor β, the dosing control unit re-corrects the dosing ratio model based on the dosing correction factor β, and uses the corrected dosing ratio model as the new calculation model for subsequent wastewater flocculation separation sedimentation.

[0050] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage treatment dosing system suitable for use in a sewage flocculation separation settling tank, characterised in that, Including the effect analysis unit, the effect analysis unit is used to collect the action environment in sewage treatment, simulates according to the collected action environment, obtains the initial flocculation proportion; Sewage collection unit, the sewage collection unit is used to obtain the sewage pollution average and the sewage volume, and the sewage treatment capacity is obtained by analyzing the sewage pollution average and the sewage volume; Dosing control unit, the dosing control unit obtains the sewage treatment capacity through the sewage collection unit, obtains the initial flocculation proportion through the effect analysis unit, and simulates the sewage treatment capacity and the initial flocculation proportion, to obtain the dosing amount; Sewage separation unit, the sewage separation unit is used to count the sewage after flocculation, to obtain the drainage pollution average, and analyze the flocculation effect according to the drainage pollution average, to obtain the dosing correction factor θ, and correct the dosing amount of the dosing control unit through the dosing correction factor θ; Data statistics unit, the data statistics unit is used to monitor the sewage flocculation process on line, to generate the dosing correction factor β according to the on-line monitoring process and the historical data comprehensive analysis, and to correct the dosing amount of the dosing control unit through the dosing correction factor β; The sewage separation unit collects the sewage pollution data in the following way: collecting during the process of discharging sewage; The sewage separation unit calculates the drainage pollution average again by weighting the pollution data during the drainage process, and compares the drainage pollution average with the preset pollution threshold value, if the drainage pollution average is less than the preset pollution threshold value, a flocculation qualified signal is generated, if the drainage pollution average is greater than or equal to the preset pollution threshold value, a flocculation failure signal is generated; The sewage separation unit sends the flocculation failure signal and the drainage pollution average to the dosing control unit after generating the flocculation failure signal, and the dosing control unit calculates the difference between the drainage pollution average and the preset pollution threshold value after obtaining the drainage pollution average, and records it as the flocculation difference value, and calculates the ratio of the flocculation difference value to the sewage pollution average, and records it as the difference ratio; The dosing control unit imports the process temperature and the process pH value into the preset flocculant action model through the effect analysis unit, to obtain the process flocculation proportion, and compares the process flocculation proportion with the initial flocculation proportion, if the process flocculation proportion is less than the initial flocculation proportion, it is recorded as the process difference point, and the dosing control unit calculates the proportion of the number of process difference points in the number of all process flocculation proportions, to obtain the process difference ratio; The dosing control unit generates the dosing correction factor θ through the difference ratio and the process difference ratio, and the dosing control unit corrects the dosing ratio model through the dosing correction factor, to obtain the corrected dosing ratio model.

2. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1, characterized in that, When the effect analysis unit collects the action environment, first, the temperature of the sewage in the sewage flocculation separation sedimentation tank is collected, recorded as the initial sewage temperature, the pH value of the sewage in the sewage flocculation separation sedimentation tank is collected, recorded as the initial pH value, then the sewage temperature and the sewage pH value are collected every certain time interval, recorded as the process temperature and the process pH value. The action analysis unit imports the initial temperature and the initial pH into a preset flocculant action model, generates an initial flocculation ratio through the flocculant preset model, and sends the initial flocculation ratio to the dosing control unit.

3. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1, characterized in that, The sewage collection unit obtains the sewage volume through a flow meter, collects sewage pollution data through an online automatic sewage analyzer, and the collected sewage pollution data includes the nitrogen and phosphorus content, the total organic matter content, the heavy metal ion content and the suspended particle content in the sewage, the sewage collection unit gives different weight thresholds to different data in the sewage pollution data, and calculates the sewage pollution mean value through weighted average; The sewage collection unit obtains the sewage treatment capacity through the product comprehensive calculation of the sewage volume and the sewage pollution mean value through a formula, and sends the sewage treatment capacity to the dosing control unit.

4. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1, characterized in that, The dosing control unit substitutes the sewage treatment capacity and the initial flocculation ratio into a preset dosing ratio model to calculate the dosing amount, and releases the flocculant according to the dosing amount.

5. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1, characterized in that, The sewage separation unit sends the flocculation qualified signal and the drainage pollution mean value to the data statistical unit after generating the flocculation qualified signal, and the data statistical unit can also collect pollution data in real time during the sewage flocculation process to obtain the process pollution mean value; The data statistical unit generates a flocculation completion signal when the process pollution mean value is less than the preset pollution threshold for the first time, calculates the time length from the input of the flocculant to the generation of the flocculation completion signal, records it as the flocculation completion time length, calculates the difference between the flocculation completion time length and the preset treatment time length to obtain the time difference, and generates a flocculation advance signal if the difference is greater than or equal to the preset value.

6. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1, characterized in that, The data statistical unit retrieves the time difference when the sewage is treated in the historical sewage flocculation separation sedimentation tank through the database, takes the time difference and the adjacent i-time difference in the historical data as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After obtaining the dosing correction factor β, the dosing control unit modifies the dosing ratio model again through the dosing correction factor β.

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