Industrial park wastewater pretreatment method, system, terminal and medium

Abstract

The invention discloses an industrial park wastewater pretreatment method, system, terminal and medium, and belongs to the technical field of wastewater treatment. The method comprises the following steps: carrying out wastewater pre-separation and wastewater purification treatment on obtained to-be-treated wastewater to obtain a purified solution; the purification liquid is divided into a plurality of treatment batches, a treatment scheme is executed on each treatment batch, and corresponding treatment parameters after execution are obtained; performing processing scoring on each processing batch based on the processing parameters so as to determine an optimal processing scheme with the highest processing efficiency; and finally, according to the optimal processing scheme, the processing duration of the target processing object is determined, and according to the change rate of the target processing object in the processing process, adding operation is executed in stages. According to the method, the equipment load of follow-up treatment is reduced through wastewater pre-separation, the optimal treatment scheme is determined through multi-batch evaluation, efficient and accurate pretreatment of the wastewater in the industrial park is achieved, and the treatment quality and economic benefits are improved.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a method, system, terminal and medium for pretreatment of wastewater in industrial parks. Background Technology

[0002] Industrial wastewater is characterized by its complex composition, high concentration of pollutants, and high toxicity. It often contains a large amount of suspended solids, heavy metal ions, and recalcitrant organic matter. If untreated wastewater is discharged directly, it will pollute the ecological environment and threaten human health. Therefore, developing efficient, economical, and environmentally friendly industrial park wastewater treatment technologies has become a key issue in the field of environmental protection.

[0003] The complexity of wastewater from existing industrial parks far exceeds that of general wastewater. It contains a wide variety of chemical substances that exist in a mixed state and may undergo complex physical and chemical reactions. Traditional pretreatment methods are unable to fully identify and quantify the interactions between these complex components, resulting in a lack of targeted treatment strategies. When treating this type of complex wastewater, it is necessary to add additional chemical treatment agents to promote reactions or achieve pollutant separation. This treatment method not only increases operating costs but also introduces new pollutants. Due to insufficient understanding of wastewater components and their interactions, existing treatment processes are difficult to control precisely, resulting in low reaction efficiency, lengthy treatment times, and the need for repeated treatment to meet discharge standards. The uncontrolled treatment process may lead to unstable pollutant removal rates, false alarms or omissions of key pollutants, thus failing to effectively guarantee the stable compliance of the final effluent quality and posing a potential threat to environmental safety.

[0004] In view of this, the present invention proposes a method, system, terminal and medium for pretreatment of wastewater in industrial parks. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for pretreatment of industrial park wastewater, which can ensure that the target substances in the wastewater can be completely converted and can also avoid the waste of solid impurities in the wastewater.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a method for pretreatment of wastewater in an industrial park, comprising the following steps: obtaining the treatment parameters corresponding to the multiple treatment schemes applied to multiple batches of purified liquid; determining the optimal treatment scheme based on the treatment parameters; and performing an addition operation according to the optimal treatment scheme. Determining the optimal processing scheme based on processing parameters includes: scoring each processing batch according to the processing parameters to evaluate the processing efficiency, and determining the processing scheme with the highest processing efficiency as the optimal processing scheme; The addition operation based on the optimal processing scheme includes: determining the processing time of the target material based on the optimal processing scheme, and performing the addition operation in stages according to the rate of change of the target material during the processing.

[0007] Preferably, the processing parameters include the processing start time, the processing end time, and the change in the content of the target substance.

[0008] Preferably, the treatment scheme includes the use of different types of additives, and the treatment score is determined based on the reduction of the target treatment and the reaction time.

[0009] Preferably, before obtaining the processing parameters, the method further includes: pre-separating the wastewater to be treated to obtain wastewater, and purifying the wastewater to obtain purified liquid.

[0010] An industrial park wastewater pretreatment system includes: The parameter acquisition module is used to collect processing parameters after multiple processing schemes are executed on multiple batches of purified liquid. The processing evaluation module is used to determine the optimal processing scheme from multiple processing schemes based on processing parameters; The processing and execution module is used to perform the add operation according to the optimal processing solution.

[0011] Preferably, the processing evaluation module is used to: score each processing batch according to the processing parameters to evaluate the processing efficiency, and determine the processing scheme with the highest processing efficiency as the optimal processing scheme.

[0012] Preferably, the treatment scheme includes the use of different types of additives, and the treatment evaluation module scores the treatment based on the reduction of the target treatment and the reaction time.

[0013] Preferably, the processing execution module is used to: determine the processing time of the target material based on the optimal processing scheme; and perform the addition operation in stages according to the rate of change of the target material during the processing.

[0014] An industrial park wastewater pretreatment terminal includes: at least one processor; and a memory connected to the processor; the memory stores a computer program configured to implement an industrial park wastewater pretreatment method when executed by the processor.

[0015] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for pretreatment of wastewater in an industrial park.

[0016] Beneficial effects: 1. By performing wastewater pre-separation, the present invention separates the substances in the wastewater to be treated from the wastewater, and classifies, recycles and labels the separated substances. This reduces the equipment load of the treatment equipment before the wastewater enters the subsequent wastewater purification treatment, avoids equipment blockage or reduced treatment efficiency due to the variety and complexity of the separated substances, and realizes the recycling of the separated substances, thus reducing resource waste.

[0017] 2. This invention divides the purified liquid into multiple treatment batches, applies a corresponding treatment plan to each batch, and simultaneously collects data on the changes in the content of the target analyte during the treatment process. Based on the treatment parameters, each batch is scored to determine the optimal treatment plan. This mechanism evaluates the treatment efficiency of different treatment plans for the target analyte, ensuring the selection of the optimal plan, improving the targeting and effectiveness of wastewater treatment, and avoiding resource waste and incomplete treatment caused by indiscriminate treatment. After determining the optimal treatment plan, additive operations are performed in stages according to the rate of change of the target analyte during the treatment process. These operations include continuous or discontinuation of additive addition to ensure the target analyte can fully react.

[0018] 3. This invention dynamically adjusts the treatment strategy based on the change in the content of the target substance, avoiding excessive or insufficient additives, thereby improving the utilization efficiency of additives, reducing operating costs, and ensuring the removal of the target substance. This enhances the economic and environmental benefits of wastewater treatment. By classifying, recovering, and labeling the separated substances during the wastewater pretreatment process, and conducting multiple batches and scheme tests and evaluations of the purified liquid, the optimal treatment scheme is ultimately formed and dynamically implemented. Through the above-mentioned systematic treatment process and refined parameter control, efficient and precise pretreatment of industrial park wastewater is achieved, improving the treatment efficiency and quality of wastewater treatment, and reducing the difficulty and cost of subsequent deep treatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure 2 This is a flowchart of the method of the present invention. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example 1: Please refer to Figure 1As shown, this embodiment can effectively classify impurities in wastewater, uniformly treat and recover impurities, and dynamically adjust the treatment plan according to the reaction characteristics of the target wastewater, thereby improving the overall efficiency and accuracy of wastewater pretreatment in industrial parks. It provides a wastewater pretreatment method for industrial parks, including the following steps: Wastewater pre-separation involves obtaining the wastewater to be treated and using mechanical pretreatment facilities such as bar screens or coarse screens to pre-separate it, removing larger particles or floating impurities. This yields wastewater and separated materials suitable for further treatment, simplifying subsequent processing. Specifically, mechanical bar screens are preferred for intercepting and filtering the wastewater, removing floating impurities with a particle diameter greater than 5mm. These impurities include, but are not limited to, cloth pieces, plastic flakes, and larger inorganic particles. The remaining material is then sieved, classifying particles between 1mm and 5mm as solid impurities and other materials as screening impurities. This physical method initially reduces the solid load in the wastewater, creating conditions for subsequent fine treatment and achieving preliminary classification of impurities, thus facilitating resource utilization. To lay the foundation and distinguish between these two types of impurities, this embodiment uses color marking or coding to label different types of impurities. For example, green labels are used for screened impurities and red labels are used for solid impurities, or electronic identification is achieved through RFID chips. This ensures accurate identification and sorting in subsequent processing stages. This labeling process not only facilitates management but, more importantly, provides a clear classification basis for subsequent recycling and processing, avoiding confusion between different types of impurities, thereby improving recycling efficiency and resource value. Solid impurities can be centrally sent to the incineration recycling system for unified processing. The incineration recycling system is a system that treats waste by high-temperature incineration and recovers energy or valuable substances in the process. Screened impurities can be further recycled, for example, as building material additives or soil conditioners.

[0022] Further, in the wastewater purification process, the wastewater obtained above is introduced into a sedimentation tank or primary clarification equipment, and non-ionic flocculants such as polyacrylamide are added to promote the formation of flocs and sedimentation of impurities in the wastewater. Through filtration, a preliminary purified liquid and preliminary purified residue are obtained. The preliminary purified liquid is then introduced into a precision filtration device such as a two-stage fine filter column, which contains two stages of filtration units in series, to gradually remove fine impurities of different particle sizes in the liquid to achieve higher purification precision. The remaining finer impurities are removed, and the resulting liquid is the purified liquid, which is used for subsequent reaction treatment to ensure the purity of the purified liquid, reduce the load on subsequent treatment, and improve the overall treatment efficiency. The preliminary filtration mainly removes larger particles and flocculent sediments, while the further filtration targets finer suspended solids and colloidal substances to ensure that the purified liquid meets the influent standards for subsequent treatment. The remaining primary sediments and secondary residues can be uniformly introduced into a sludge dewatering or thickening system and transported through pipelines to a special container or recycling tank for industrial landfill or as a potential energy resource, maximizing resource recycling and reducing waste emissions, which is in line with the concept of a circular economy.

[0023] Further, the treatment analysis of the target analytes involves acquiring and testing the reaction of the main pollutants in the purified liquid. First, the purified liquid undergoes component analysis to identify the main pollutants or target analytes, such as nitrites, organophosphorus compounds, and heavy metal ions. The purified liquid is then divided into several treatment batches, and a corresponding treatment plan is implemented for each batch, such as adding specific additives to induce coagulation, oxidation, or reduction reactions. This batch treatment strategy aims to systematically evaluate the removal efficiency of different treatment plans for the target analytes through comparative experiments, providing data support for subsequent large-scale treatment. The treatment batch plans include: treatment batches... 1. As the default solution, no external treatment materials are added, and only the self-cleaning ability of the purified liquid is tested. For treatment batches 2, 3, and 4, different types of additives are added, such as activated carbon, iron salts, and ozone. After each treatment scheme is executed, the remaining amount of the target treatment material is recorded, and the reduction amount is calculated based on the initial content and the remaining content. By introducing different types of additives, multiple treatment paths can be explored to cope with the complexity and variability of wastewater composition, thereby finding the most economical and effective treatment method. For example, activated carbon is mainly used to adsorb organic pollutants, iron salts are often used for coagulation and precipitation of heavy metals, and ozone can be used to oxidize and degrade recalcitrant organic matter.

[0024] Furthermore, the processing parameters are collected through online detection equipment or manual sampling to obtain the content change process of the target analyte in each batch of purified liquid. At the same time, the start time and end time of the treatment are recorded simultaneously. Using these data, a content change curve is generated, which is a graphical representation of the change of the concentration or content of the target analyte over time during a specific treatment process. It is usually plotted with time on the horizontal axis and content on the vertical axis, and its value and treatment duration are converted into treatment parameters. These are key indicators used to quantify and describe the treatment effect and process characteristics in the wastewater treatment process, including but not limited to the reduction of the target analyte, treatment time, reaction rate, etc., which serve as the basis for the evaluation of the next stage. Obtaining continuous and real-time treatment data provides accurate quantitative basis for subsequent evaluation and optimization. The content change curve can intuitively reflect the dynamic changes of the target analyte during the treatment process, which helps to understand the reaction mechanism and rate.

[0025] Furthermore, the treatment evaluation is conducted. Based on the treatment parameters and reduction amounts obtained from each treatment batch, each treatment scheme is scored. The calculation process for the treatment score is as follows: .

[0026] in, The treatment score is a quantitative indicator that comprehensively evaluates the merits of wastewater treatment solutions. It is calculated by combining factors such as treatment efficiency and treatment time, and is used to select the optimal treatment solution. The unit is dimensionless.

[0027] in It represents the treatment efficiency, which is the amount of target waste reduced per unit time. It reflects the effectiveness and rate of the treatment process and is expressed in units of concentration / time, such as mg / L·min. This represents the time required to complete a specific processing plan, expressed in minutes (e.g., min). This represents the highest processing efficiency among all evaluated schemes. The longest processing time among all evaluated options. , Weighting coefficients for processing efficiency and time, respectively. This value can be adjusted according to actual needs; the default value is 0.5. This scoring calculation process aims to comprehensively consider both the treatment effect and time cost, avoiding biased evaluations that may result from a single indicator. Considering only the reduction amount might lead to selecting a time-consuming treatment plan; considering only time might lead to selecting a treatment plan with insufficient reduction. By combining both, a more comprehensive evaluation of the treatment plan's merits can be achieved. The values ​​are sorted, and the treatment scheme with the highest score is selected as the optimal treatment scheme. At the same time, other treatment schemes and their corresponding scores are saved as backup schemes and stored in the treatment evaluation module. The module receives treatment parameters and reduction data, performs treatment score calculation, and stores and manages the score results of different treatment schemes and backup schemes. The backup schemes are designed to quickly switch to the suboptimal treatment scheme in case of future changes in wastewater composition or adjustments to treatment needs, thereby improving the system's adaptability and robustness.

[0028] Furthermore, after selecting the optimal treatment plan, the total time required from the start of the reaction of the target substance to its complete consumption under the current reaction conditions is calculated; this is the reaction duration. .

[0029] in, Represents the duration of a reaction, which is the total time required from the start of the reaction of the target substance until it is completely consumed, expressed in time, such as min.

[0030] By analyzing the consumption rate of the target analyte and combining it with the content change curve, the optimal timing for adding the corresponding additives in each time period is determined. This dynamic adjustment strategy adjusts the dosage and timing of the additive based on real-time reaction conditions and changes in the target analyte content to optimize treatment effectiveness and reduce costs. To achieve precise dosing, avoid reagent waste, and ensure the target analyte reacts fully, thereby improving treatment efficiency and economy, an automatic dosing command is issued when the rate peak reaches an inflection point. The control system, based on preset logic or real-time data analysis results, sends operational commands to the additive treatment equipment regarding the type, dosage, and timing of the additive. Subsequently, the additive dosage is appropriately reduced as the content gradually decreases, and finally, dosing ends after the clearing inflection point is reached. This intelligent control based on real-time reaction rate optimizes the additive dosing strategy and avoids the drawbacks of traditional fixed dosage or fixed-time dosing methods. To reduce secondary pollution and increased costs caused by excessive addition, and to achieve precise control, the reaction stage can be divided into four phases: initiation stage, acceleration stage, decline stage, and emptying stage. The additive dosage ratio and amount for each stage are stored together for the feedback control system to call upon, realizing automated processing throughout the entire process. The phased control strategy divides the entire processing process into several different reaction stages, and adopts different control logics and additive addition strategies for the characteristics and objectives of each stage, in order to achieve refined management and optimize the processing effect. It can more precisely manage the reaction process and ensure that the most appropriate processing operation is taken at each reaction stage. For example, it can rapidly increase the reaction rate in the initiation stage, maintain an effective reaction in the decline stage, and ensure complete removal in the emptying stage. Addition operations include continuously replenishing additives to maintain reaction activity or stopping additive replenishment to avoid excessive addition and waste of resources, ensuring that the target treated material can fully react.

[0031] Example 2: Please refer to Figure 2 As shown, in order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the scope of protection of the present invention.

[0032] This embodiment provides a wastewater pretreatment system for industrial parks. By collecting and analyzing historical treatment data, it can automatically determine and execute the optimal treatment scheme, thereby improving the treatment efficiency and stability of complex wastewater in industrial parks.

[0033] In its implementation, this system can consist of a central control unit, a programmable logic controller (PLC), various sensors such as pH meters, online COD analyzers, and flow meters, as well as actuators such as metering pumps, valves, and agitators. Logically, the system can be divided into the following collaborative modules: The parameter acquisition module is configured to collect corresponding treatment parameters after executing multiple treatment schemes on multiple batches of purified liquid. In a specific execution process, wastewater from the industrial park is pre-separated to obtain wastewater, such as by removing large suspended solids through a screen and grit chamber. The wastewater is then purified through processes such as coagulation sedimentation or flotation to obtain purified liquid. For multiple batches of purified liquid, multiple preset treatment schemes are executed. These schemes can be experimental schemes that differ in additive type, dosage, reaction pH, etc. During and at the end of each treatment scheme, the parameter acquisition module automatically collects and records a series of treatment parameters through a sensor network connected to the treatment reaction tank. Specifically, the treatment parameters include the treatment start time (recording the start of the reaction), the treatment end time (recording the end of the reaction), and the process data on the change in the content of the target analyte, continuously collected by online monitoring equipment. All collected parameters are associated with the corresponding treatment batch and treatment scheme, forming a historical database for subsequent analysis.

[0034] The processing evaluation module is configured to determine the optimal processing scheme from multiple processing schemes based on the processing parameters collected by the parameter acquisition module. Upon receiving historical data containing multiple processing batches and schemes, it initiates an evaluation algorithm. Based on the processing parameters, it scores each processing batch to quantify its processing efficiency. In a preferred embodiment, the processing schemes include the use of different types of additives. The processing evaluation module calculates the processing score based on the total reduction of the target processed material calculated from the content change process data, and the reaction time determined by the difference between the processing end time and the processing start time. The processing score can be defined as the reduction of the target processed material per unit time, i.e., processing efficiency = reduction / reaction time. The processing scores corresponding to all processing schemes are compared, and the processing scheme with the highest processing efficiency, i.e., the highest processing score, is determined as the optimal processing scheme under the current operating conditions. This optimal processing scheme is then output to the processing execution module to guide the subsequent formal processing flow.

[0035] The processing execution module is configured to perform additive operations on new batches of treatment based on the optimal treatment plan determined by the processing evaluation module, serving as a bridge between decision-making and physical execution. In a specific execution flow, key operational instructions are parsed from the optimal treatment plan. Based on historical data of the corresponding processing steps for this optimal plan, the module determines the processing time required for the target analyte to achieve the ideal removal rate. To achieve more refined control and conserve reagents, a phased control strategy is adopted to execute the additive operation based on the rate of change of the target analyte during the treatment process. For example, the module can monitor the concentration of the target analyte in the current batch of purified liquid in real time. In the initial stage of treatment, when the concentration is high and the reaction is rapid, a higher frequency or larger dose of additive operation is performed. As treatment progresses, when the concentration of the target analyte decreases and the rate of change slows down, the frequency or dose of additive addition is reduced accordingly until the treatment time ends or the target analyte content reaches the emission standard. This phased additive operation is precisely completed by the module through controlling actuators such as metering pumps or valves connected to the treatment reaction tank.

[0036] This invention also provides an electronic device, which can be a physical carrier for implementing the above-described system, such as a server, an industrial computer, or an embedded device. In terms of hardware structure, it includes at least one processor and a memory that is communicatively connected to at least one processor, wherein the memory stores computer program instructions.

[0037] This invention also provides a computer-readable storage medium storing a computer program that, when the at least one processor executes these instructions, performs the method described above, specifically by implementing all or part of the functions of the above-described modules and the correctness determination module.

[0038] Through the collaborative operation of the aforementioned modules, electronic devices, and storage media, the industrial park wastewater pretreatment system of this embodiment can form an optimization and control closed loop driven by historical data. It automatically learns from past experience and selects the optimal treatment scheme, executing it in a dynamic and refined manner. This effectively addresses the challenges of fluctuating wastewater quality in industrial parks, ensuring treatment quality while reducing operating costs. It is suitable for industrial wastewater treatment scenarios requiring efficient pretreatment of various complex pollutants.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for pretreatment of wastewater in an industrial park, characterized in that, The steps include: obtaining the processing parameters corresponding to the multiple processing schemes applied to multiple batches of purified liquid, determining the optimal processing scheme based on the processing parameters, and performing the addition operation according to the optimal processing scheme; Determining the optimal processing scheme based on processing parameters includes: scoring each processing batch according to the processing parameters to evaluate the processing efficiency, and determining the processing scheme with the highest processing efficiency as the optimal processing scheme; The addition operation based on the optimal processing scheme includes: determining the processing time of the target material based on the optimal processing scheme, and performing the addition operation in stages according to the rate of change of the target material during the processing.

2. The method for pretreatment of industrial park wastewater according to claim 1, characterized in that, The processing parameters include the start time of processing, the end time of processing, and the change in the content of the target analyte.

3. The method for pretreatment of industrial park wastewater according to claim 2, characterized in that, The treatment options include the use of different types of additives, and the treatment score is determined based on the reduction of the target substance and the reaction time.

4. The method for pretreatment of industrial park wastewater according to claim 1, characterized in that, Before obtaining the processing parameters, the process also includes: pre-separating the wastewater to be treated to obtain wastewater, and purifying the wastewater to obtain purified liquid.

5. A wastewater pretreatment system for industrial parks, characterized in that, include: The parameter acquisition module is used to collect processing parameters after multiple processing schemes are executed on multiple batches of purified liquid. The processing evaluation module is used to determine the optimal processing scheme from multiple processing schemes based on processing parameters; The processing and execution module is used to perform the add operation according to the optimal processing solution.

6. The industrial park wastewater pretreatment system according to claim 5, characterized in that, The processing evaluation module is used to score each processing batch based on processing parameters to evaluate processing efficiency and determine the processing scheme with the highest processing efficiency as the optimal processing scheme.

7. The industrial park wastewater pretreatment system according to claim 6, characterized in that, The treatment options include the use of different types of additives, and the treatment evaluation module scores the treatment based on the reduction of the target treatment and the reaction time.

8. The industrial park wastewater pretreatment system according to claim 5, characterized in that, The processing execution module is used to: determine the processing time of the target material based on the optimal processing scheme; and perform addition operations in stages according to the rate of change of the target material during the processing.

9. A wastewater pretreatment terminal for industrial parks, comprising: At least one processor; And, the memory connected to the processor; The memory stores a computer program, characterized in that the computer program is configured to, when executed by a processor, implement a wastewater pretreatment method for an industrial park according to any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements a wastewater pretreatment method for industrial parks as described in any one of claims 1 to 4.

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