A control method for sewage treatment process in metallurgical industry

Abstract

The invention discloses a regulation and control method for a sewage treatment process of the metallurgical industry, and relates to sewage treatment technology of the metallurgical industry. The regulation and control method for the sewage treatment process of the metallurgical industry comprises the steps of collecting date, and determining evaluation indexes; building an evaluation index system; calculating various index weighted values used for describing the degree of influence of various indexes on the actual operation effect of the metallurgical sewage treatment process; building index cloud models used for describing the effect of operation, closest to the actual state, of the indexes in the metallurgical sewage treatment process to be evaluated; using a fifteen-dimensional comprehensive cloud T to describe the overall operating state, composed of the various indexes, of the metallurgical sewage treatment process to be evaluated; calculating a weighted deviation degree theta which is used for measuring changes of the center of gravity of the comprehensive cloud T, and reflecting the difference between the operating state of the sewage treatment process to be evaluated and the operation effect of the sewage treatment process in the ideal state; evaluating the weighted deviation degree theta to obtain an evaluation result, and regulating and having control over the sewage treatment process. According to the regulation and control method, accurate evaluation, regulation and control can be carried out on each sewage treatment process according to specific metallurgical sewage treatment processes, and the actual operation effect of the metallurgical sewage treatment processes is ensured.

Description

technical field [0001] The invention relates to a sewage treatment technology in the metallurgical industry, in particular to a method for controlling the sewage treatment process in the metallurgical industry based on the Analytic Hierarchy Process (AHP) cloud center of gravity evaluation method (MCGC). Background technique [0002] Due to the complex production process of the metallurgical industry, a large amount of sewage will be generated during the production process. The sewage is characterized by a large amount of water, many types of pollutants, and complex and changeable water quality. It is a kind of industrial wastewater that is difficult to treat. With the continuous strengthening of national environmental protection policies and the emergence of a large number of serious environmental problems, metallurgical enterprises must choose appropriate sewage treatment processes. [0003] Before the 1870s, the choice of most sewage treatment processes was based on the e...

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Problems solved by technology

[0003] Before the 1870s, the choice of most sewage treatment processes was based on the experience of the designer or the mainstream treatment process at that time, relying only on perceptual knowledge, lacking pertinence and scientificity, resulting in the selected The treatment effect of the sewage treatment process does not meet the industry discharge standards, or the operating cost is too high, wasting resources

After the 1870s, some evaluation methods for sewage treatment technology were successively proposed, including analytic hierarchy process, weighted prioritization method, utility function method, and correlation analysis method. Scientific, but due to the shortcomings of the evaluation method itself and the ambiguity and randomness of qualitative indicators in the evaluation process, the evaluation results deviate from the actual situation

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