Heavy metal wastewater purification control method based on operation mode dynamic matching
An operation mode and wastewater purification technology, applied in chemical instruments and methods, control/manipulation systems, water pollutants, etc., can solve problems such as waste of resources and labor, inability to achieve stable removal of heavy metals, complex reaction mechanism, etc.
Active Publication Date: 2019-03-08
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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The invention discloses a heavy metal wastewater purification control method based on operation mode dynamic matching, which comprises the steps of: constructing relational models between heavy metalion concentration and dosage as well as a bath voltage in the neutralization and sedimentation process and the electrochemical process; constructing a multi-objective coordination optimization model by taking a minimum dosage and minimum power consumption as objectives; constructing an operation mode knowledge base; by utilizing the multi-objective coordination optimization model, obtaining optimal values of the dosage and the bath voltage under a real-time input condition; judging whether operation matching needs to be carried out; if yes, matching an operation mode in the operation mode knowledge base to acquire coordination values of the dosage and the bath voltage and regulating the optimal values to obtain control values of the dosage and the bath voltage; and if no, using the optimalvalues of the dosage and the bath voltage as control values and carrying out control regulation. According to the invention, by the method, more reasonable and accurate dosage and voltage value can be implemented so as to avoid high energy consumption and high material consumption which are caused by manual adding.
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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Patent Timeline
Login to View More IPC IPC(8): C02F9/06G06F17/50C02F101/20
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