Ultraviolet light-assisted laboratory organic wastewater treatment method and system

Abstract

The application relates to a kind of ultraviolet light assisted laboratory organic wastewater treatment method and system, and relates to wastewater treatment technical field.The method mainly includes: calculating water pollution degree grade according to the chemical characteristic parameter of organic wastewater;According to the water pollution degree grade, physical characteristic parameter and water quantity working condition parameter, generate a plurality of initial wastewater treatment paths;Select the initial wastewater treatment path with the minimum target function value from the initial wastewater treatment path as the final wastewater treatment path for treating organic wastewater;Determine the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameter, physical characteristic parameter and water quantity working condition parameter;The controller controls the corresponding wastewater treatment unit in the final wastewater treatment path based on the configuration data and operation data to realize the treatment of organic wastewater.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and in particular to a method and system for treating laboratory organic wastewater with the assistance of ultraviolet light. BACKGROUND

[0002] When treating organic wastewater with complex components and high concentration, laboratories in many colleges and research institutions often use physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and even achieve wastewater recycling and reuse to fully utilize water resources.

[0003] Currently, in the process of treating wastewater, the treatment process of the wastewater and the dosage of the chemical reagent added in the wastewater treatment process need to be determined by manual calculation, and the pH value is adjusted to be close to neutral so as to meet the safety standards for subsequent discharge or treatment. The manual calculation method depends on experience, and if the experience is insufficient, the effect of wastewater treatment will be low. SUMMARY

[0004] The present application aims to provide a method and system for treating laboratory organic wastewater with the assistance of ultraviolet light to solve the problems in the prior art. The technical problems to be solved by the present application are solved by the following technical solutions.

[0005] The present application provides a method for treating laboratory organic wastewater with the assistance of ultraviolet light. The method is applied to a system for treating laboratory organic wastewater with the assistance of ultraviolet light. The system includes a plurality of wastewater treatment units and a controller. The controller is used to execute the following method:

[0006] Obtain chemical characteristic parameters, physical characteristic parameters and water quantity working condition parameters of the organic wastewater;

[0007] Calculate a water pollution degree grade according to the chemical characteristic parameters of the organic wastewater. The water pollution degree grade is used to represent the pollution degree of the organic wastewater.

[0008] Generate a plurality of initial wastewater treatment paths according to the water pollution degree grade, the physical characteristic parameters and the water quantity working condition parameters. The initial wastewater treatment path includes a plurality of wastewater treatment units. Different wastewater treatment units are used to realize wastewater treatment in different dimensions.

[0009] Select an initial wastewater treatment path with the minimum target function value from the initial wastewater treatment paths as a final wastewater treatment path for treating the organic wastewater.

[0010] Determine configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters.

[0011] The controller controls corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to achieve treatment of the organic wastewater.

[0012] In an optional embodiment, the calculation of the water pollution degree grade according to the chemical characteristic parameters of the organic wastewater comprises:

[0013] Each of the chemical characteristic parameters is normalized, and a water pollution index is calculated by weighting the normalized chemical characteristic parameters of the organic wastewater.

[0014] The water pollution index is corrected by a toxicity correction factor, and a water pollution degree grade is determined based on the corrected toxicity correction factor.

[0015] In an optional embodiment, the generation of the initial wastewater treatment paths according to the water pollution degree grade, the physical characteristic parameters, and the water quantity working condition parameters comprises:

[0016] A basic path skeleton corresponding to the water pollution degree grade is obtained from a path template library; the path template library comprises basic path skeletons corresponding to respective water pollution degree grades;

[0017] The basic path skeleton is adjusted based on the physical characteristic parameters and the water quantity working condition parameters to obtain the initial wastewater treatment paths.

[0018] In an optional embodiment, the adjustment of the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain the initial wastewater treatment paths comprises:

[0019] The processing time and the required chemical reagent type of the wastewater treatment units in the basic path skeleton are adjusted according to the physical characteristic parameters and the water quantity working condition parameters to obtain the processing time and the required chemical reagent type.

[0020] In an optional embodiment, the selection of the initial wastewater treatment path with the minimum target function value from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater comprises:

[0021] The processing cost, the processing time, the processing efficiency, and the pollutant removal rate of each wastewater treatment unit are calculated according to the initial wastewater treatment paths.

[0022] The initial wastewater treatment path with the minimum target function value determined according to the processing cost, the processing time, the processing efficiency, and the pollutant removal rate is selected as the final wastewater treatment path for treating the organic wastewater.

[0023] In an optional embodiment, the determining of the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter comprises:

[0024] determining the wastewater treatment units corresponding to the pretreatment stage, the core treatment stage, and the advanced treatment stage respectively from the final wastewater treatment path;

[0025] based on simulation technology, the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter determine the configuration data and operation data of the wastewater treatment units corresponding to each treatment stage respectively.

[0026] In an optional embodiment, the determining of the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter comprises:

[0027] determining the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage through the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter;

[0028] inputting the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage and the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter into a simulation model to obtain the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage through simulation;

[0029] determining the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage through the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage;

[0030] inputting the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage and the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage into a simulation model to obtain the chemical characteristic parameter and the water quantity working condition parameter corresponding to the core treatment stage through simulation;

[0031] determining the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage through the chemical characteristic parameter and the water quantity working condition parameter corresponding to the core treatment stage.

[0032] In an optional embodiment, the determining of the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter comprises:

[0033] converting the chemical characteristic parameter, the physical characteristic parameter, and the water quantity working condition parameter into a data feature matrix;

[0034] input the data feature matrix and the attribute data of the wastewater treatment unit corresponding to the pretreatment stage into a pretreatment unit prediction model to obtain configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage.

[0035] In an optional embodiment, after the configuration data and operation data of the wastewater treatment unit corresponding to the deep treatment stage are determined by the chemical feature parameters and the water quantity working condition parameters corresponding to the core treatment stage, the method further comprises:

[0036] input the configuration data and operation data of the wastewater treatment unit corresponding to the deep treatment stage, the chemical feature parameters corresponding to the core treatment stage and the water quantity working condition parameters into a simulation model to perform simulation and obtain chemical feature parameters corresponding to the deep treatment stage;

[0037] detect whether the chemical feature parameters corresponding to the deep treatment stage meet the emission standard;

[0038] if the chemical feature parameters do not meet the emission standard, adjust the configuration data and operation data corresponding to the pretreatment stage, the core treatment stage and the deep treatment stage until the chemical feature parameters corresponding to the deep treatment stage meet the emission standard.

[0039] An ultraviolet light-assisted laboratory organic wastewater treatment system is provided in the embodiments of the present application, and the system comprises a plurality of wastewater treatment units and a controller.

[0040] An acquisition module is configured to acquire chemical feature parameters, physical feature parameters and water quantity working condition parameters of organic wastewater.

[0041] A calculation module is configured to calculate a water pollution degree grade according to the chemical feature parameters of the organic wastewater, and the water pollution degree grade is used to represent the pollution degree of the organic wastewater.

[0042] A generation module is configured to generate a plurality of initial wastewater treatment paths according to the water pollution degree grade, the physical feature parameters and the water quantity working condition parameters, and each initial wastewater treatment path comprises a plurality of wastewater treatment units, and different wastewater treatment units are used to implement wastewater treatment in different dimensions.

[0043] A screening module is configured to select an initial wastewater treatment path with the minimum target function value from the initial wastewater treatment paths as a final wastewater treatment path for treating the organic wastewater.

[0044] A determination module is configured to determine configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical feature parameters, the physical feature parameters and the water quantity working condition parameters.

[0045] a control module configured to control corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to achieve the treatment of the organic wastewater.

[0046] Embodiments of the present application include the following advantages:

[0047] Embodiments of the present application provide a method and system for treating organic wastewater in a laboratory with the aid of ultraviolet light. The chemical characteristic parameters, physical characteristic parameters, and water quantity working condition parameters of the organic wastewater are obtained. The water pollution degree grade is calculated according to the chemical characteristic parameters of the organic wastewater. A plurality of initial wastewater treatment paths are generated according to the water pollution degree grade, the physical characteristic parameters, and the water quantity working condition parameters. The initial wastewater treatment path with the minimum objective function value is selected from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater. The configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters. Finally, the controller controls the corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to achieve the treatment of the organic wastewater. Since the final wastewater treatment path in the present application has the minimum objective function value, and the final wastewater treatment path includes a plurality of wastewater treatment units, different wastewater treatment units are used to achieve wastewater treatment in different dimensions. Therefore, the present application can control the corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to achieve the treatment of the organic wastewater. The entire treatment process does not require manual calculation and participation, thereby improving the effect and efficiency of wastewater treatment. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a flowchart of a method for treating organic wastewater in a laboratory with the aid of ultraviolet light provided by embodiments of the present application;

[0049] Figure 2 is a structural schematic diagram of a system for treating organic wastewater in a laboratory with the aid of ultraviolet light provided by embodiments of the present application. DETAILED DESCRIPTION

[0050] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] Please refer to Figure 1 A method for treating organic wastewater in a laboratory with the aid of ultraviolet light provided by embodiments of the present application. The method is applied to a system for treating organic wastewater in a laboratory with the aid of ultraviolet light. The system includes a plurality of wastewater treatment units and a controller. The controller is configured to execute the following method:

[0052] S101, obtain chemical characteristic parameters, physical characteristic parameters and water quantity working condition parameters of the organic wastewater.

[0053] Specifically, the chemical characteristic parameters are used to describe the chemical composition and pollution nature of the wastewater, which can include comprehensive pollution indicators (such as chemical oxygen demand, total organic carbon, biochemical oxygen demand, etc.), specific pollutant concentrations (toxic / difficult-to-degrade substances, heavy metal ions), key physicochemical properties (such as pH value, conductivity / salinity, chloride ion concentration, oxidation-reduction potential, etc.), ultraviolet light key action parameters (ultraviolet transmittance, ultraviolet-visible absorption spectrum, molar absorption coefficient of characteristic pollutants, etc.); the physical characteristic parameters are used to describe the appearance and physical state of the wastewater, which can include color, turbidity / suspended solids concentration, temperature, oil content / oil concentration, etc.; the water quantity working condition parameters are used to define the scale and boundary conditions of wastewater treatment, which can include instantaneous flow, total water quantity / batch volume, influent flow pattern, maximum allowable treatment period, target discharge standard, etc.

[0054] S102, calculate a water quality pollution degree grade according to the chemical characteristic parameters of the organic wastewater.

[0055] The water quality pollution degree grade is used to represent the pollution degree of the organic wastewater.

[0056] In the embodiment, the calculation of the water quality pollution degree grade according to the chemical characteristic parameters of the organic wastewater includes: normalizing each parameter in the chemical characteristic parameters, i.e. converting each chemical characteristic parameter value into a dimensionless index between 0 and 1, and performing weighted calculation on the normalized chemical characteristic parameters of the organic wastewater to obtain a water quality pollution index; correcting the water quality pollution index by a toxicity correction factor, and determining a water quality pollution degree grade based on the corrected toxicity correction factor.

[0057] For example, the COD index of a certain wastewater is 0.8, the toxicity substance index is 0.6, the SS index is 0.4, and the UVT index is 0.7. If the weight distribution is COD 0.4, toxicity substance 0.3, SS 0.2, and UVT 0.1, then the water quality pollution index = 0.4 0.8+0.3 0.6+0.2 0.4+0.1 0.7=0.65.

[0058] In the embodiment, the effects of all characteristic toxic substances are integrated to calculate a toxicity correction factor, then the product of the toxicity correction factor and the water quality pollution index is calculated, and the water quality pollution degree level is determined according to the product, such as 0 ≤ product < 0.3, which is light pollution; 0.3 ≤ product < 0.6, which is moderate pollution; and product ≥ 0.6, which is heavy pollution. Specifically, the maximum function or weighted square root sum is used to calculate the toxicity correction factor in the embodiment to highlight the most serious toxicity threat, that is, the toxicity correction factor is calculated by the following formula:

[0059] Maximum function

[0060] Square root

[0061] Wherein, TCF is the toxicity correction factor, is an amplification coefficient (which can be 1.2-1.5), is the toxicity index of the nth toxic substance, which is the ratio of the measured concentration of the toxic substance to the process inhibition threshold of the toxic substance, is the weight of the nth toxic substance.

[0062] S103, generating a plurality of initial wastewater treatment paths according to the water quality pollution degree level, the physical characteristic parameter and the water quantity working condition parameter.

[0063] Wherein, the initial wastewater treatment path includes a plurality of wastewater treatment units, and different wastewater treatment units are used to realize wastewater treatment in different dimensions.

[0064] In an optional embodiment of the present application, the generating a plurality of initial wastewater treatment paths according to the water quality pollution degree level, the physical characteristic parameter and the water quantity working condition parameter comprises:

[0065] S1031, obtaining a basic path skeleton corresponding to the water quality pollution degree level from a path template library.

[0066] Wherein, the path template library includes basic path skeletons corresponding to each water quality pollution degree level respectively; each basic path skeleton includes a pretreatment stage, a core treatment stage and a deep treatment stage.

[0067] Specifically, the wastewater treatment units in the pretreatment stage can include a bar screen / multi-media filtration unit (used to physically intercept large particles and suspended solids, protecting subsequent pumps, valves, and reactors), a coagulation sedimentation / flotation unit (using coagulants to agglomerate fine particles, removing colloids and some color), a pH adjustment tank (using acid or alkali to adjust the pH to the optimal range required by the subsequent core unit), and an equalization tank (using water flow parameters to homogenize and equalize the flow, ensuring stable hydraulic load of the system), etc.; the core treatment stage can include an ultraviolet photolysis unit (high-energy ultraviolet light directly breaks the molecular bonds of pollutants, achieving direct degradation), and an ultraviolet photocatalytic oxidation unit (ultraviolet light excites the catalyst to generate strong oxidizing free radicals, and micro-doses are dynamically added based on real-time COD and UVT). The system can form a synergistic and efficient mineralization of pollutants, an advanced oxidation unit, a biological treatment unit (using microbial degradation), etc.; the deep treatment stage can include an adsorption / membrane separation unit (such as decolorization and deodorization by activated carbon adsorption), an ultraviolet disinfection unit (using medium-pressure ultraviolet lamps for broad-spectrum sterilization and decomposition of trace organic matter), an ion exchange / electrodialysis unit (used to remove specific ions to ensure that the conductivity of the effluent meets the standards), etc.

[0068] In this embodiment, all basic path skeletons that conform to the water pollution level are selected from the path template library. For example, if the water pollution level is moderate, all basic path skeletons applicable to this level are quickly selected from the path template library. All path skeletons marked "Level II" in the library (such as P-II-01, P-II-02, P-II-03) will be initially selected. Then, from the initially selected basic path skeleton set, fine-tuning can be performed by combining key chemical / physical characteristic parameters to obtain the basic path skeleton corresponding to the water pollution level.

[0069] For example, retrieve all Level II basic path skeletons from the template library, assuming they include:

[0070] P-II-01: Suitable for highly biodegradable wastewater;

[0071] P-II-02: Suitable for high-salinity wastewater;

[0072] P-II-03: Suitable for wastewater with low biodegradability and containing recalcitrant toxic organic matter;

[0073] P-II-04: Suitable for wastewater with high suspended solids and high color.

[0074] Key data obtained from testing and analysis: COD was 1200 mg / L. The value is 0.25, UVT@254nm is 55%, and then the current water quality parameters are compared with the applicable conditions of each framework:

[0075] P-II-01: Require B / C > 0.2, match (current 0.25);

[0076] P-II-02: Require salinity > 2%, not match;

[0077] P-II-03: Require B / C < 0.3, UVT > 30%, and contain refractory and toxic organic matter, match;

[0078] P-II-04: Require SS > 200 mg / L, not match;

[0079] Finally, P-II-01 and P-II-03 are determined as the basic path skeleton.

[0080] S1032, adjusting the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain a plurality of initial wastewater treatment paths.

[0081] Specifically, adjusting the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain a plurality of initial wastewater treatment paths includes adjusting the treatment time and the required chemical reagent types of the wastewater treatment unit in the basic path skeleton according to the physical characteristic parameters and the water quantity working condition parameters to obtain the treatment time and the required chemical reagent types.

[0082] In this embodiment, the treatment time is the hydraulic retention time (HRT), and the calculation formula is: HRT = reactor effective volume / influent flow rate. The core of the adjustment is to change the influent flow rate or to increase or decrease the number of reactors in series to adjust the HRT indirectly under the condition of fixed volume, and the basis for the adjustment comes from the physical characteristic parameters. For example, if the temperature is lower than the design value (e.g., < 15℃), it indicates that low temperature significantly reduces the chemical reaction rate and microbial activity, and more reaction time is required, so the HRT can be extended, such as multiplying the calculated basic HRT by a factor of 1.3~1.5; if it is higher than the design value (e.g., > 30℃), it indicates that high temperature accelerates the reaction, but may cause side reactions or microbial inactivation, so the HRT can be shortened, such as multiplying the calculated basic HRT by a factor of 0.8~0.9. For example, if the turbidity / suspended solids (SS) is higher than the upper limit of the design, the HRT can be extended in the pretreatment unit (such as coagulation and sedimentation); if the ultraviolet transmittance (UVT) is lower than the lower limit of the unit design, the HRT can be extended in the ultraviolet light treatment unit (i.e., increase the exposure time).

[0083] The basic selection of the type of chemical reagent is determined by the chemical characteristic parameters (such as pH, specific pollutants) of the wastewater in the generation path skeleton. If the flow fluctuation is great, the use of liquid reagents (such as liquid alkali, liquid PAC) is switched to the use of solid or high-concentration reagents combined with precise screw feeding machines; if the turbidity / SS is abnormally high, the addition of coagulants / flocculants (such as PAC, PAM) is enabled or increased; if the oil content / oil content is high, a demulsifier is enabled as pretreatment.

[0084] S104, selecting the initial wastewater treatment path with the minimum target function value from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater.

[0085] In an optional embodiment of the present application, the step of selecting the initial wastewater treatment path with the minimum target function value from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater comprises: calculating the treatment cost, treatment time, treatment efficiency, and pollutant removal rate of each wastewater treatment unit according to the initial wastewater treatment paths; and determining the initial wastewater treatment path with the minimum target function value according to the treatment cost, treatment time, treatment efficiency, and pollutant removal rate as the final wastewater treatment path for treating the organic wastewater.

[0086] The treatment cost is all the fees consumed in running the path, including chemical reagents, energy consumption, labor, etc.; the treatment time is the total time required from water inlet to water outlet through all units, i.e. the sum of the hydraulic retention times of the units; the treatment efficiency is the amount of pollutants removed per unit time or unit cost; and the pollutant removal rate is the removal percentage of pollutants in the entire path, i.e. (inlet concentration-outlet concentration) / inlet concentration. The smaller the treatment cost and treatment time, the larger the treatment efficiency and pollutant removal rate, so when constructing the target function, the inverse or negative of the treatment efficiency and pollutant removal rate is taken, so that all four indicators become the smaller the better.

[0087] Specifically, after normalizing the treatment cost, treatment time, treatment efficiency, and pollutant removal rate, a weight is assigned to each indicator, and then the weighted sum is obtained. For indicators that are expected to be larger (treatment efficiency, removal rate), this embodiment can use 1 minus the normalized value (if normalized to [0, 1]) to convert it to the smaller the better.

[0088] S105, determining the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters.

[0089] In an optional embodiment of the present application, the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters, including:

[0090] S1051, determining the wastewater treatment units corresponding to the pretreatment stage, the core treatment stage, and the advanced treatment stage in the final wastewater treatment path respectively.

[0091] S1052, determining the configuration data and operation data of the wastewater treatment units corresponding to each treatment stage respectively based on a simulation technology, the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters.

[0092] In the embodiment, for the pretreatment stage, the core treatment stage, and the advanced treatment stage, each treatment stage has a typical treatment unit, for example, the pretreatment stage can include coagulation or filtration, the core treatment can be photocatalysis or biological oxidation, and the advanced treatment can be adsorption or membrane separation. For each stage unit, the configuration data can be the reactor volume, the membrane area, and the operation data can be the dosing rate, the aeration amount, etc., which are not specifically limited in the embodiment.

[0093] For example, the configuration data of the wastewater treatment units (adjustment tank, coagulation sedimentation, air flotation, and filtration) for the pretreatment stage can be the geometric size, the structure parameter (such as the mixing zone / reactive zone / settling zone volume ratio, the inclined plate spacing and inclination), the equipment type (such as the mixer power and rotating speed, the mud scraper model, and the dosing pump specification), the material selection (such as the corrosion resistance grade and the tank body material), etc.; and the operation data can be the hydraulic parameter, the dosing parameter (such as the coagulant / flocculant type, the dosing concentration, and the dosing point), the control parameter (such as the mixer frequency and the sludge discharge period), etc.

[0094] Specifically, step S1052 determines the configuration data and operation data of the wastewater treatment units corresponding to each treatment stage respectively based on a simulation technology, the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters, including:

[0095] S10521, determining the configuration data and operation data of the wastewater treatment units corresponding to the pretreatment stage based on the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters.

[0096] Specifically, the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage are determined according to the chemical characteristic parameter, the physical characteristic parameter and the water quantity working condition parameter, including: converting the chemical characteristic parameter, the physical characteristic parameter and the water quantity working condition parameter into a data feature matrix; inputting the data feature matrix and attribute data of the wastewater treatment unit corresponding to the pretreatment stage into a pretreatment unit prediction model to obtain the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage.

[0097] The pretreatment unit prediction model is a pre-trained neural network model, which is suitable for predicting the configuration data and the operation data of each wastewater treatment unit in the pretreatment stage. That is, by inputting the data feature matrix and the attribute data of the wastewater treatment unit corresponding to the pretreatment stage into the pretreatment unit prediction model, the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage can be obtained.

[0098] S10522, the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage and the chemical characteristic parameter, the physical characteristic parameter and the water quantity working condition parameter are input into a simulation model for simulation to obtain the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage.

[0099] It should be noted that the wastewater treatment units in the pretreatment stage, the core treatment stage and the deep treatment stage in the embodiment are used to sequentially treat wastewater. Therefore, after obtaining the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage by the pretreatment unit prediction model, the configuration data and the operation data of the wastewater treatment unit in the next stage are determined according to the configuration data and the operation data of the wastewater treatment unit corresponding to the pretreatment stage.

[0100] S10523, the configuration data and the operation data of the wastewater treatment unit corresponding to the core treatment stage are determined according to the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage.

[0101] Specifically, the chemical characteristic parameter and the water quantity working condition parameter of the pretreatment stage can be converted into a data feature matrix, and the data feature matrix and attribute data of the wastewater treatment unit corresponding to the core treatment stage are input into a core treatment unit prediction model to obtain the configuration data and the operation data of the wastewater treatment unit corresponding to the core treatment stage. That is, the configuration data and the operation data of the wastewater treatment unit corresponding to the core treatment stage can be obtained by predicting according to the pre-trained core treatment unit prediction model.

[0102] S10524, input the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage, and the chemical characteristic parameters and water quantity working condition parameters of the pretreatment stage to a simulation model to simulate and obtain the chemical characteristic parameters and water quantity working condition parameters corresponding to the core treatment stage.

[0103] In this embodiment, after the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage are predicted, the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage, and the chemical characteristic parameters and water quantity working condition parameters of the pretreatment stage are input to a simulation model to simulate and obtain the chemical characteristic parameters and water quantity working condition parameters corresponding to the core treatment stage.

[0104] S10525, determine the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage according to the chemical characteristic parameters and water quantity working condition parameters corresponding to the core treatment stage.

[0105] Specifically, the embodiment can convert the chemical characteristic parameters and water quantity working condition parameters of the core treatment stage into a data feature matrix; input the data feature matrix and attribute data of the wastewater treatment unit corresponding to the advanced treatment stage to a deep treatment unit prediction model to obtain the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage. That is, the embodiment can predict the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage according to the pre-trained deep treatment unit prediction model.

[0106] Further, after the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage are determined according to the chemical characteristic parameters and water quantity working condition parameters corresponding to the core treatment stage, the embodiment further includes: input the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage, the chemical characteristic parameters and water quantity working condition parameters corresponding to the core treatment stage to a simulation model to simulate and obtain the chemical characteristic parameters corresponding to the advanced treatment stage; detect whether the chemical characteristic parameters corresponding to the advanced treatment stage meet the emission standard; if not, adjust the configuration data and operation data corresponding to the pretreatment stage, the core treatment stage and the advanced treatment stage until the chemical characteristic parameters corresponding to the advanced treatment stage meet the emission standard.

[0107] In this embodiment, after the chemical characteristic parameters corresponding to the advanced treatment stage are obtained through simulation , if the chemical characteristic parameters corresponding to the advanced treatment stage do not meet the emission standard .

[0108] It should be noted that the configuration data in this embodiment, such as reactor size and membrane area, are generally fixed during operation, but can be adjusted as variables during the design phase. This embodiment assumes that the configuration data is fixed and only adjusts the operating data of each processing stage.

[0109] Because the simulation model is a black box model (i.e., it cannot be directly obtained) about (The analytical expression), therefore, this embodiment can use an optimization algorithm to solve the running data. The constrained optimization problem. Includes all adjustable operational data. This includes operational data from the pretreatment stage (such as coagulant dosage, pH adjustment value, etc.). This includes operational data for the core processing stage (such as ultraviolet light intensity, oxidant dosage, reaction time, etc.). This refers to operational data from the advanced processing stage (such as membrane flux, adsorbent dosage, etc.). The objective function and constraints of the optimization algorithm are as follows:

[0110] Objective function: ;

[0111] Constraints: This means that the adjusted effluent concentration must meet the standard. Among these, To adjust the changes in parameters before and after, It is the weight, which indicates the ease or cost of adjusting the parameter.

[0112] For example, the final wastewater treatment path is: coagulation and sedimentation (pretreatment) + ultraviolet photocatalytic oxidation (core treatment) + activated carbon adsorption (deep treatment), which requires controlling the effluent COD concentration to be below 50 mg / L. The initial operating data for each treatment stage obtained through the above steps are as follows: pretreatment stage: coagulant dosage 30 mg / L, sedimentation time 2 h; core treatment stage: ultraviolet light intensity 30 mW / cm², hydrogen peroxide dosage 100 mg / L, reaction time 1 h; deep treatment stage: activated carbon bed empty bed contact time 30 min.

[0113] Simulation results showed that the COD of the effluent from the advanced treatment stage was 60 mg / L, which did not meet the standard.

[0114] First, define the adjustable operation data and range: coagulant dosage [10, 50] mg / L, sedimentation time [1, 4] h, ultraviolet light intensity [20, 50] mW / cm², hydrogen peroxide dosage [50, 200] mg / L, reaction time [0.5, 2] h, activated carbon contact time [10, 60] min. Then define the objective function and the constraint condition effluent COD <= 50 mg / L. Use optimization algorithm (such as MATLAB fmincon) to solve the operation data. Since the simulation model may be time-consuming to calculate, an agent model can be established first. Suppose a set of parameters is obtained through optimization: coagulant dosage 40 mg / L, sedimentation time 2.5 h, ultraviolet light intensity 35 mW / cm², hydrogen peroxide dosage 120 mg / L, reaction time 1.5 h, activated carbon contact time 40 min. Substitute this set of parameters into the simulation, and the effluent COD is 48 mg / L. If it meets the standard, the adjustment is over.

[0115] S106, the controller controls the corresponding wastewater treatment unit in the final wastewater treatment path based on the configuration data and operation data to achieve the treatment of the organic wastewater.

[0116] The method provided by the embodiment of the application is a method for treating organic wastewater in a laboratory with the aid of ultraviolet light. The chemical characteristic parameters, physical characteristic parameters and water quantity working condition parameters of the organic wastewater are obtained. Then, the water pollution degree grade is calculated according to the chemical characteristic parameters of the organic wastewater, and a plurality of initial wastewater treatment paths are generated according to the water pollution degree grade, the physical characteristic parameters and the water quantity working condition parameters. An initial wastewater treatment path with the minimum objective function value is selected from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater. Then, the configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters. Finally, the controller controls the corresponding wastewater treatment unit in the final wastewater treatment path based on the configuration data and operation data to achieve the treatment of the organic wastewater. Since the final wastewater treatment path has the minimum objective function value, and the final wastewater treatment path includes a plurality of wastewater treatment units, different wastewater treatment units are used to achieve wastewater treatment in different dimensions. Therefore, the organic wastewater can be treated by controlling the corresponding wastewater treatment unit in the final wastewater treatment path based on the configuration data and operation data, and the entire treatment process does not require manual calculation, thereby improving the effect and efficiency of wastewater treatment.

[0117] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution. The execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the application.

[0118] In an embodiment, an ultraviolet light-assisted laboratory organic wastewater treatment system is provided. As shown in Figure 2 The system includes a plurality of wastewater treatment units and a controller, the controller including:

[0119] An acquisition module 21 is configured to acquire chemical characteristic parameters, physical characteristic parameters, and water quantity working condition parameters of the organic wastewater.

[0120] A calculation module 22 is configured to calculate a water quality pollution degree grade according to the chemical characteristic parameters of the organic wastewater. The water quality pollution degree grade is used to represent the pollution degree of the organic wastewater.

[0121] A generation module 23 is configured to generate a plurality of initial wastewater treatment paths according to the water quality pollution degree grade, the physical characteristic parameters, and the water quantity working condition parameters. The initial wastewater treatment paths include a plurality of wastewater treatment units, and different wastewater treatment units are used to implement wastewater treatment in different dimensions.

[0122] A screening module 24 is configured to select an initial wastewater treatment path with a minimum target function value from the initial wastewater treatment paths as a final wastewater treatment path for treating the organic wastewater.

[0123] A determination module 25 is configured to determine configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters.

[0124] A control module 26 is configured to control corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to implement treatment of the organic wastewater.

[0125] In an optional embodiment, the calculation module 22 is specifically configured to:

[0126] normalize each parameter in the chemical characteristic parameters, and perform weighted calculation on the normalized chemical characteristic parameters of the organic wastewater to obtain a water quality pollution index;

[0127] correct the water quality pollution index by a toxicity correction factor, and determine a water quality pollution degree grade based on the corrected toxicity correction factor.

[0128] In an optional embodiment, the generation module 23 is specifically configured to:

[0129] acquire a basic path skeleton corresponding to the water quality pollution degree grade from a path template library. The path template library includes basic path skeletons corresponding to respective water quality pollution degree grades.

[0130] Adjust the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain a plurality of initial wastewater treatment paths.

[0131] In an optional embodiment, the generating module 23 is specifically configured to:

[0132] Adjust the processing time and required chemical reagent types of the wastewater treatment units in the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain the processing time and required chemical reagent types.

[0133] In an optional embodiment, the screening module 24 is specifically configured to:

[0134] Calculate the processing cost, processing time, processing efficiency, and pollutant removal rate of each wastewater treatment unit according to the initial wastewater treatment paths;

[0135] Determine the initial wastewater treatment path with the minimum objective function value of the processing cost, processing time, processing efficiency, and pollutant removal rate as the final wastewater treatment path for treating the organic wastewater.

[0136] In an optional embodiment, the determining module 25 is specifically configured to:

[0137] Determine the wastewater treatment units corresponding to the pretreatment stage, core treatment stage, and advanced treatment stage from the final wastewater treatment path;

[0138] Based on the simulation technology, the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters determine the configuration data and operation data of the wastewater treatment units corresponding to each treatment stage.

[0139] In an optional embodiment, the determining module 25 is specifically configured to:

[0140] Determine the configuration data and operation data of the wastewater treatment units corresponding to the pretreatment stage through the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters;

[0141] Input the configuration data and operation data of the wastewater treatment units corresponding to the pretreatment stage and the chemical characteristic parameters, the physical characteristic parameters, and the water quantity working condition parameters into a simulation model to perform simulation and obtain the chemical characteristic parameters and water quantity working condition parameters of the pretreatment stage;

[0142] Determine the configuration data and operation data of the wastewater treatment units corresponding to the core treatment stage through the chemical characteristic parameters and water quantity working condition parameters of the pretreatment stage;

[0143] The configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage, and the chemical characteristic parameters and the water quantity working condition parameters of the pretreatment stage are input into a simulation model to obtain the chemical characteristic parameters and the water quantity working condition parameters of the core treatment stage through simulation.

[0144] The configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage are determined through the chemical characteristic parameters and the water quantity working condition parameters of the core treatment stage.

[0145] In an optional embodiment, the determining module 25 is specifically configured to:

[0146] The chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters are converted into a data feature matrix.

[0147] The data feature matrix and the attribute data of the wastewater treatment unit corresponding to the pretreatment stage are input into a pretreatment unit prediction model to obtain the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage.

[0148] In an optional embodiment, the determining module 25 is specifically further configured to:

[0149] The configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage, the chemical characteristic parameters and the water quantity working condition parameters of the core treatment stage are input into a simulation model to obtain the chemical characteristic parameters of the advanced treatment stage through simulation.

[0150] It is detected whether the chemical characteristic parameters of the advanced treatment stage meet the discharge standard.

[0151] If the chemical characteristic parameters of the advanced treatment stage do not meet the discharge standard, the configuration data and operation data of the pretreatment stage, the core treatment stage and the advanced treatment stage are adjusted until the chemical characteristic parameters of the advanced treatment stage meet the discharge standard.

[0152] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0153] The specific limitations of the ultraviolet light-assisted laboratory organic wastewater treatment system can be referred to the limitations of the ultraviolet light-assisted laboratory organic wastewater treatment method in the above, which will not be repeated here. Each module in the above device can be realized by software, hardware and combinations thereof, in whole or in part. Each module described above can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0154] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to complete all or part of the functions described above.

[0155] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method for ultraviolet light assisted laboratory organic wastewater treatment, characterized by, The method is applied to an ultraviolet light assisted laboratory organic wastewater treatment system, the system comprising a plurality of wastewater treatment units and a controller, the controller being configured to perform the following method: obtaining chemical characteristic parameters, physical characteristic parameters and water quantity working condition parameters of the organic wastewater; calculating a water pollution degree grade according to the chemical characteristic parameters of the organic wastewater; the water pollution degree grade being used to represent the pollution degree of the organic wastewater; generating a plurality of initial wastewater treatment paths according to the water pollution degree grade, the physical characteristic parameters and the water quantity working condition parameters; the initial wastewater treatment paths comprising a plurality of wastewater treatment units, different wastewater treatment units being used to implement wastewater treatment in different dimensions; selecting an initial wastewater treatment path with the minimum objective function value from the initial wastewater treatment paths as a final wastewater treatment path for treating the organic wastewater; determining configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters; the controller controlling corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to implement treatment of the organic wastewater; the calculating of the water pollution degree grade according to the chemical characteristic parameters of the organic wastewater comprises: normalizing each parameter in the chemical characteristic parameters, and calculating a water pollution index by weighting the normalized chemical characteristic parameters of the organic wastewater; correcting the water pollution index by a toxicity correction factor, and determining a water pollution degree grade based on the corrected toxicity correction factor; the generating of the plurality of initial wastewater treatment paths according to the water pollution degree grade, the physical characteristic parameters and the water quantity working condition parameters comprises: obtaining a basic path skeleton corresponding to the water pollution degree grade from a path template library; the path template library comprising basic path skeletons corresponding to respective water pollution degree grades; adjusting the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain the plurality of initial wastewater treatment paths; the adjusting of the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain the plurality of initial wastewater treatment paths comprises: adjusting the processing time and the required chemical reagent types of the wastewater treatment units in the basic path skeleton based on the physical characteristic parameters and the water quantity working condition parameters to obtain the processing time and the required chemical reagent types; the selecting of the initial wastewater treatment path with the minimum objective function value from the initial wastewater treatment paths as the final wastewater treatment path for treating the organic wastewater comprises: calculating the processing cost, the processing time, the processing efficiency and the pollutant removal rate of each wastewater treatment unit according to the initial wastewater treatment paths; selecting the initial wastewater treatment path with the minimum objective function value determined according to the processing cost, the processing time, the processing efficiency and the pollutant removal rate as the final wastewater treatment path for treating the organic wastewater.

2. The method of claim 1, wherein, The configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters, and the method comprises the following steps: determining the wastewater treatment units corresponding to the pretreatment stage, the core treatment stage and the advanced treatment stage respectively from the final wastewater treatment path; based on simulation technology, the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters determine the configuration data and operation data of the wastewater treatment units corresponding to each treatment stage respectively.

3. The method of claim 2, wherein, The configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters, and the method comprises the following steps: determining the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage through the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters; inputting the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage and the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters into a simulation model to simulate and obtain the chemical characteristic parameters and the water quantity working condition parameters of the pretreatment stage; determining the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage through the chemical characteristic parameters and the water quantity working condition parameters of the pretreatment stage; inputting the configuration data and operation data of the wastewater treatment unit corresponding to the core treatment stage and the chemical characteristic parameters and the water quantity working condition parameters of the pretreatment stage into a simulation model to simulate and obtain the chemical characteristic parameters and the water quantity working condition parameters corresponding to the core treatment stage; determining the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage through the chemical characteristic parameters and the water quantity working condition parameters corresponding to the core treatment stage.

4. The method of claim 3, wherein, The configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path are determined according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters, and the method comprises the following steps: converting the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters into a data feature matrix; inputting the data feature matrix and the attribute data of the wastewater treatment unit corresponding to the pretreatment stage into a pretreatment unit prediction model to obtain the configuration data and operation data of the wastewater treatment unit corresponding to the pretreatment stage.

5. The method of claim 3, wherein, After determining the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage through the chemical characteristic parameters and the water quantity working condition parameters corresponding to the core treatment stage, the method further comprises the following steps: inputting the configuration data and operation data of the wastewater treatment unit corresponding to the advanced treatment stage, the chemical characteristic parameters and the water quantity working condition parameters corresponding to the core treatment stage into a simulation model to simulate and obtain the chemical characteristic parameters corresponding to the advanced treatment stage; detecting whether the chemical characteristic parameters corresponding to the advanced treatment stage meet the discharge standard; If the emission standard is not met, the configuration data and operation data of the pretreatment stage, the core treatment stage and the advanced treatment stage are adjusted until the chemical characteristic parameter of the advanced treatment stage meets the emission standard.

6. A UV-assisted laboratory organic wastewater treatment system, characterized by, The system includes a plurality of wastewater treatment units and a controller, the controller includes: An acquisition module is configured to acquire chemical characteristic parameters, physical characteristic parameters and water quantity working condition parameters of the organic wastewater. A calculation module is configured to calculate a water quality pollution degree grade according to the chemical characteristic parameters of the organic wastewater, the water quality pollution degree grade being used to represent a pollution degree of the organic wastewater. A generation module is configured to generate a plurality of initial wastewater treatment paths according to the water quality pollution degree grade, the physical characteristic parameters and the water quantity working condition parameters, the initial wastewater treatment paths including a plurality of wastewater treatment units, and different wastewater treatment units being used to implement wastewater treatment in different dimensions. A screening module is configured to select an initial wastewater treatment path with a minimum target function value from the initial wastewater treatment paths as a final wastewater treatment path for treating the organic wastewater. A determination module is configured to determine configuration data and operation data of each wastewater treatment unit in the final wastewater treatment path according to the chemical characteristic parameters, the physical characteristic parameters and the water quantity working condition parameters. A control module is configured to control corresponding wastewater treatment units in the final wastewater treatment path based on the configuration data and the operation data to implement treatment of the organic wastewater. The calculation module is specifically configured to normalize each parameter in the chemical characteristic parameters, and to obtain a water quality pollution index by weighted calculation of the normalized chemical characteristic parameters of the organic wastewater; to correct the water quality pollution index by a toxicity correction factor, and to determine a water quality pollution degree grade based on the corrected toxicity correction factor. The generation module is specifically configured to acquire a basic path skeleton corresponding to the water quality pollution degree grade from a path template library; the path template library includes basic path skeletons corresponding to each water quality pollution degree grade respectively; and to adjust processing time and required chemical reagent types of wastewater treatment units in the basic path skeleton according to the physical characteristic parameters and the water quantity working condition parameters to obtain processing time and required chemical reagent types. The screening module is specifically configured to calculate processing cost, processing time, processing efficiency and pollutant removal rate of each wastewater treatment unit according to the initial wastewater treatment paths, and to select an initial wastewater treatment path with a minimum target function value determined according to the processing cost, the processing time, the processing efficiency and the pollutant removal rate as a final wastewater treatment path for treating the organic wastewater.

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