A control method for heavy metal wastewater purification based on dynamic matching of operation modes
An operation mode and wastewater purification technology, applied in chemical instruments and methods, control/manipulation systems, water pollutants, etc., can solve problems such as unreasonable chemical addition and voltage setting, failure to discharge in time, waste of resources and labor, etc.
Active Publication Date: 2020-06-05
CENT SOUTH UNIV
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Problems solved by technology
However, the wide source of wastewater, large fluctuations in water quality and water volume lead to large fluctuations in working conditions, and the mechanism of adsorption reaction and electrochemical reaction is complex and coupled, making it difficult for operators to determine the dosage and voltage value in a timely and correct manner, and it is impossible to coordinate the two processes. complete the stable removal of heavy metals
Unreasonable agent addition and voltage setting make the export of heavy metal ions fluctuate greatly, and even cannot be discharged in time, requiring secondary treatment, resulting in waste of resources and labor
Method used
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Embodiment Construction
[0057] The present invention will be further described below in conjunction with examples.
[0058] Such as figure 1 As shown, a kind of heavy metal wastewater purification control method based on dynamic matching of operation mode provided by the present invention comprises the following steps:
[0059] S1: Construct the relationship models of heavy metal ion concentration and dosing amount in the neutralization and precipitation process, heavy metal ion concentration and cell voltage in the electrochemical process, and identify the parameters of the relationship model based on field historical data.
[0060] The relationship model between heavy metal ion concentration and dosing amount is constructed based on the principle of adsorption kinetics and material balance in the process of neutralization and precipitation, as follows:
[0061]
[0062] In the formula, V 1 is the volume of the precipitation reaction tank, is the change rate of heavy metal ion concentration i...
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A heavy metal wastewater purification control method based on dynamic operation mode matching. The method comprises: constructing relationship models for a heavy metal ion concentration and a dosage and a cell voltage during a neutralization and sedimentation process and an electrochemical process; with dosage and power consumption minimization as the objective, constructing a multi-objective coordination and optimization model; constructing an operation mode knowledge base; using the multi-objective coordination and optimization model to obtain optimization values of the dosage and the cell voltage under real-time input conditions; determining whether operation matching is required; and if matching is required, matching operation modes in the operation mode knowledge base to acquire coordination values of the dosage and the cell voltage and adjusting the optimization values to obtain control values of the dosage and the cell voltage, and if matching is not required, taking the optimization values of the dosage and the cell voltage as the control values and performing controlling and adjustment. By means of the method, more rational and accurate values of a dosage and a voltage can be determined, and the high energy consumption and high material consumption caused by manual addition can be avoided.
Description
technical field [0001] The invention belongs to the technical field of wastewater treatment process optimization and control, and in particular relates to a heavy metal wastewater purification control method based on dynamic matching of operation modes. Background technique [0002] Nonferrous metal industrial wastewater is the main source of heavy metal pollution in my country, which poses a major threat to environmental protection and human life safety. Therefore, my country has strict requirements on the stable and up-to-standard discharge of heavy metal wastewater. The neutralization precipitation-electrochemical wastewater treatment process is an effective method for large-scale advanced treatment of heavy metal wastewater. The pretreatment effect of the neutralization and precipitation process can realize large-scale purification of wastewater and meet the treatment needs of large-flow wastewater in non-ferrous metal enterprises in my country; the electrochemical proc...
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IPC IPC(8): C02F9/06G06F30/20C02F101/20
CPCC02F1/008C02F1/461C02F1/62C02F1/66C02F9/00C02F2101/20C02F2201/46135C02F2201/4615G06F30/20G06F2111/06
Inventor 阳春华张凤雪朱红求李勇刚李文婷蒋晓云
Owner CENT SOUTH UNIV