CN-122010265-A - Oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production

CN122010265ACN 122010265 ACN122010265 ACN 122010265ACN-122010265-A

Abstract

The invention relates to the field of industrial wastewater treatment, in particular to an oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production, which comprises parameter acquisition, wear evaluation, boundary prediction, strategy decision and dynamic execution modules, wherein the system combines fluid multidimensional state parameters for feature extraction and utilizes a mapping model to quantify the buffer capacity wear level of the sulfur-containing wastewater, the core is to predict the speed approaching the failure boundary of the system based on wear level change, and combine a dangerous threshold value to generate a fluid regulation strategy for dynamically controlling the addition of an oxidant and/or a flocculant for fluid state reconstruction.

Inventors

LEI WENJUN
BAO WANLI
LUO WEI
LI SIYUAN
SUN NA
LI GUOPENG

Assignees

西安近代科技实业有限公司

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (10)

1. The utility model provides a mancozeb production sulfur-containing wastewater's oxidation flocculation processing system which characterized in that, including the reaction tank, set up in sensor group and dosing mechanism in the reaction tank, and with sensor group with dosing mechanism communication connection's control terminal, control terminal includes: The parameter acquisition module is used for monitoring the sulfur-containing wastewater in the reaction tank in real time through the sensor group to acquire a fluid state parameter set; The consumption evaluation module is used for extracting the characteristics of the fluid state parameter set, calculating based on a preset fluid state mapping model which takes the fluid state parameter as input and takes the consumption degree as output, and quantifying the buffer capacity consumption degree of the sulfur-containing wastewater; the boundary prediction module is used for predicting failure approaching time of the sulfur-containing wastewater reaching a preset system failure boundary based on time series change of the buffer capacity loss degree, wherein the system failure boundary is preset with a limit threshold; the strategy decision module is used for comparing the buffer capacity loss degree with a preset dangerous threshold value and generating a corresponding fluid regulation strategy by combining the failure approaching time; and the dynamic execution module is used for controlling the dosing mechanism to dose an oxidant, a flocculating agent and/or an acid-base regulator to the sulfur-containing wastewater according to the fluid regulation strategy and executing corresponding fluid state reconstruction operation.
2. The oxidation and flocculation treatment system for sulfur-containing wastewater in mancozeb production according to claim 1, wherein the parameter acquisition module is specifically configured to: obtaining an oxidation-reduction potential sequence of the sulfur-containing wastewater; Obtaining a stirring current sequence of the sulfur-containing wastewater; acquiring a fluid viscosity sequence of the sulfur-containing wastewater; and carrying out synchronous processing and filtering processing on the oxidation-reduction potential sequence, the stirring current sequence and the fluid viscosity sequence, and combining to generate the fluid state parameter set.
3. The oxidation and flocculation treatment system of sulfur-containing wastewater in mancozeb production according to claim 2, wherein the wear evaluation module is specifically configured to: Calculating the potential change rate according to the oxidation-reduction potential sequence; extracting fluctuation characteristics of the stirring current sequence, and acquiring variance characteristics and high-frequency fluctuation amplitude values of the stirring current sequence as current fluctuation characteristics; combining the potential change rate, the current fluctuation feature, and the fluid viscosity sequence into a multi-dimensional feature vector; Inputting the multidimensional feature vector into the fluid state mapping model trained in advance, and outputting the buffer capacity loss degree of the sulfur-containing wastewater, wherein the fluid state mapping model is a neural network model trained based on the historical multidimensional feature vector and the corresponding loss degree label.
4. The oxidation flocculation treatment system of sulfur-containing wastewater in mancozeb production of claim 3, wherein the boundary prediction module is specifically configured to: recording the buffer capacity loss degree according to a time sequence, and constructing a loss degree time sequence; carrying out regression analysis on the loss degree time sequence to obtain a loss degree increase slope; Acquiring the limit threshold corresponding to the system failure boundary; And calculating the failure approximation time based on the difference value of the limit threshold and the buffer capacity loss degree at the current moment divided by the loss degree increase slope.
5. The oxidation flocculation treatment system of sulfur-containing wastewater in mancozeb production of claim 4, wherein the policy decision module is specifically configured to: Comparing the buffer capacity loss with the preset dangerous threshold; If the buffer capacity loss degree is smaller than the dangerous threshold, generating a conventional steady-state maintenance strategy; And if the buffer capacity loss degree is greater than or equal to the dangerous threshold value, combining the failure approximation time to generate a depth-breaking reconstruction strategy.
6. The oxidation and flocculation treatment system of sulfur-containing wastewater in the production of mancozeb according to claim 5, wherein the dynamic execution module is specifically configured to, when executing the normal steady-state maintenance strategy: acquiring the latest potential value of the oxidation-reduction potential sequence in the fluid state parameter set, and calculating the theoretical medicament demand of the sulfur-containing wastewater by combining a preset stoichiometric ratio; Acquiring a preset steady-state maintenance coefficient; multiplying the theoretical medicament demand by the steady-state maintenance coefficient to calculate the conventional medicament adding amount; and controlling the dosing mechanism to dose corresponding medicaments to the sulfur-containing wastewater according to the conventional dosing amount so as to maintain metastable state balance of the sulfur-containing wastewater.
7. The oxidation and flocculation treatment system for sulfur-containing wastewater produced by mancozeb according to claim 5, wherein the dynamic execution module is specifically configured to, when executing the deep-breaking reconstruction strategy: Acquiring current pH value data of the sulfur-containing wastewater; Acquiring a preset target pH value, multiplying a dynamic adjustment coefficient inversely related to the failure approaching time according to the difference value of the target pH value and the current pH value data, and calculating acid-base impact drug addition amount; multiplying the inverse proportion normalized mapping value of the failure approximation time by a preset medicament adding reference quantity to calculate the sacrificial medicament adding quantity; And controlling the dosing mechanism to inject the acid-base regulator corresponding to the acid-base impact dosing amount into the sulfur-containing wastewater, and adding the sacrificial agent corresponding to the sacrificial agent dosing amount so as to break the colloid steady state of the sulfur-containing wastewater.
8. The oxidation and flocculation treatment system for sulfur-containing wastewater produced by mancozeb according to claim 7, wherein the reaction tank comprises a plurality of stages of reaction tanks, the sulfur-containing wastewater is distributed in the plurality of stages of reaction tanks, and the dynamic execution module is further configured to, when executing the corresponding fluid state reconstruction operation: acquiring cascading sequence and pipe network topology information of the multistage reaction tanks; calculating the medicament adding distribution proportion of each stage of reaction tanks in the multistage reaction tanks according to the deep-breaking stability reconstruction strategy and the volume proportion of each stage of reaction tanks in the pipe network topology information; Multiplying the failure approximation time by a preset reflux mapping coefficient, and calculating the fluid reflux ratio between the multistage reaction tanks; And carrying out cooperative control on the multistage reaction tanks according to the medicament adding distribution proportion and the fluid backflow proportion.
9. The oxidation and flocculation treatment system for sulfur-containing wastewater in mancozeb production according to claim 8, wherein the control terminal further comprises a model updating module, and the model updating module is specifically configured to: after executing the fluid regulation strategy, re-collecting the executed fluid state parameters of the sulfur-containing wastewater; Calculating a difference value between the fluid state parameter after execution and a preset target state parameter as a state recovery index; And based on the state recovery index, adaptively updating the internal weight parameters of the fluid state mapping model through a back propagation algorithm.
10. An oxidative flocculation treatment system for sulfur-containing wastewater from mancozeb production as claimed in claim 9, wherein said buffer capacity loss is used to characterize the enrichment index of colloidal sulfur in said sulfur-containing wastewater; The system failure boundary is used for representing a critical state that a large amount of colloid sulfur in the sulfur-containing wastewater is separated out and is accompanied by the release of harmful gases; the sacrificial agent includes a strong oxidizing agent for forced oxidation of surface active impurities.

Description

Oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production Technical Field The invention relates to the field of industrial wastewater treatment, in particular to an oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production. Background Under the working condition of collar water retention treatment in mancozeb pesticide production, high-fluctuation sulfur-containing wastewater can be periodically or intermittently generated in links such as batch switching, equipment cleaning and the like in workshops. The waste water has complex components and is often alternately converged into upstream cleaning liquid, mother liquid switching liquid and intermittent discharge liquid, so that thiocarbamate decomposition products, free sulfides, heavy metal ions and trace surface active impurities are interwoven in the water body, and the water quality parameters in the fluid show strong nonlinear fluctuation characteristics. In order to treat the sulfur-containing wastewater, the conventional oxidation flocculation scheme generally adopts a passive dosing framework based on a single instantaneous water quality index, namely, the online monitoring is carried out through an oxidation-reduction potential or pH value sensor, and when the absolute value index deviates from a set interval, a control system finely adjusts the dosing amount of an oxidant or a flocculant according to a fixed theoretical stoichiometric ratio. Although the scheme has a certain continuous processing capability in a steady-state water inflow scene, the conventional sensor is only sensitive to the total pollutant change, and the interface state change in the fluid and the colloid protection effect caused by trace surface active impurities reflect serious hysteresis, so that the control system cannot identify the hidden colloid sulfur enrichment process in the system. When the traditional dosing mode finely adjusted according to the theoretical value loses deviation rectifying capability due to insufficient action amplitude in the face of high fluctuation load or impurity impact, the system is extremely easy to cross a failure boundary before the effluent index is overtime, and further malignant accidents such as floc disintegration, sludge floating, blackening and deteriorating of water quality, and massive dissipation of toxic hydrogen sulfide gas are caused. Therefore, how to extend the control object from the dominant delayed water outlet index to the hidden system buffer toughness, and realize the prospective early warning and the self-adaptive dynamic reconstruction regulation and control of the failure risk of the low-redundancy oxidation flocculation system becomes a technical problem to be solved urgently. Disclosure of Invention In order to solve the technical problems, the invention provides an oxidation flocculation treatment system for sulfur-containing wastewater in mancozeb production, which comprises the following specific technical scheme: The reaction tank, set up in sensor group and dosing mechanism in the reaction tank, and with sensor group with dosing mechanism communication connection's control terminal, control terminal includes: The parameter acquisition module is used for monitoring the sulfur-containing wastewater in the reaction tank in real time through the sensor group to acquire a fluid state parameter set; The consumption evaluation module is used for extracting the characteristics of the fluid state parameter set, calculating based on a preset fluid state mapping model which takes the fluid state parameter as input and takes the consumption degree as output, and quantifying the buffer capacity consumption degree of the sulfur-containing wastewater; the boundary prediction module is used for predicting failure approaching time of the sulfur-containing wastewater reaching a preset system failure boundary based on time series change of the buffer capacity loss degree, wherein the system failure boundary is preset with a limit threshold; the strategy decision module is used for comparing the buffer capacity loss degree with a preset dangerous threshold value and generating a corresponding fluid regulation strategy by combining the failure approaching time; and the dynamic execution module is used for controlling the dosing mechanism to dose an oxidant, a flocculating agent and/or an acid-base regulator to the sulfur-containing wastewater according to the fluid regulation strategy and executing corresponding fluid state reconstruction operation. Further, the parameter acquisition module is specifically configured to: obtaining an oxidation-reduction potential sequence of the sulfur-containing wastewater; Obtaining a stirring current sequence of the sulfur-containing wastewater; acquiring a fluid viscosity sequence of the sulfur-containing wastewater; and carrying out synchronous processing and filtering processing on the oxidation-reduction potential s