Optimal control method and device for electric flocculation process
A technology of optimization control and electrocoagulation, applied in chemical instruments and methods, general water supply saving, complex mathematical operations, etc.
Active Publication Date: 2020-07-10
CENT SOUTH UNIV
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Problems solved by technology
[0006] In order to at least partly overcome the above-mentioned problems in the prior art, the present invention provides an optimization control method and device for the electrocoagulation process, which is used to automatically determine a more reasonable and accurate current and commutation period in the electrocoagulation process according to the actual situation , to avoid the high power consumption caused by manual adjustment, and the problem that the purified wastewater cannot meet the standard stably
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[0079] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0080] figure 1 It is a flowchart of an optimal control method for an electrocoagulation process according to an embodiment of the present invention, such as figure 1 shown, including:
[0081] Step S1: Build a mechanism relationship model between impurity concentration and current in the electrocoagulation process, and collect industrial data to identify and verify the parameters of the model;
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The invention provides an optimal control method and device for an electric flocculation process, and the method comprises the steps: building a relation model of impurity concentration and current inthe electric flocculation process, collecting industrial data, and carrying out the parameter recognition of the relation model; establishing a multi-objective optimization model based on two conflict objectives with the highest impurity removal rate and the lowest processing cost; introducing a self-adjusting parameterization method and a commutation factor to construct an optimization model based on a commutation period; and optimizing the current and the commutation period by adopting a state transition algorithm with an evaluation criterion to obtain an industrial set value. According tothe optimal control method, the optimal set values of the current and the commutation period can be obtained, real-time control guidance can be provided for the current and the commutation period in the electric flocculation process, and the method and the device have important significance in reducing the power consumption, saving the cost and stabilizing the outlet purified water quality in theelectric flocculation process.
Description
technical field [0001] The invention belongs to the field of industrial process optimization control, and in particular relates to an optimization control method and device of an electrocoagulation process. Background technique [0002] Industrial wastewater is currently the main source of water environmental pollution, especially heavy metal pollutants such as cadmium, cobalt, and nickel contained in wastewater have huge hazards such as carcinogenic and teratogenic. The electrocoagulation process is a green and effective method for treating industrial wastewater. Electrode reactions occur by energizing the iron plates, and the precipitated iron ions diffuse into the solution and pollutants undergo complex oxidation-reduction reactions, hydrolysis reactions, and pollutants inside the reactor. Physical adsorption reaction forms insoluble flocs and precipitates to purify water. [0003] In the process of electrocoagulation, the current setting plays a key role in the effectiv...
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IPC IPC(8): C02F1/463G06F17/10C02F101/20
CPCC02F1/463C02F2101/20G06F17/10Y02A20/152
Inventor 阳春华张凤雪李勇刚黄科科李繁飙袁卓异周灿朱红求
Owner CENT SOUTH UNIV