Multi-model predictive control method for variable working condition sewage treatment process

A technology for sewage treatment and predictive control, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, multi-stage water treatment, etc. Effects of Linearity and Uncertainty

Inactive Publication Date: 2016-11-09
上海环保工程成套有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For such complex processes with frequent changes in working conditions, it is difficult to describe the process characteristics of the entire working condition using a single global model.

Method used

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  • Multi-model predictive control method for variable working condition sewage treatment process
  • Multi-model predictive control method for variable working condition sewage treatment process
  • Multi-model predictive control method for variable working condition sewage treatment process

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Embodiment Construction

[0015] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0016] Embodiments of the present invention relate to a multi-model predictive control method for a sewage treatment process under variable working conditions. The method is aimed at the sewage treatment process based on the A2 / O process (such as figure 1 shown), a multi-model predictive controller is designed.

[0017] Firstly, taking oxygen transfer coefficient and sludge return flow as input, and effluent ammonia nitrogen a...

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Abstract

The invention relates to a multi-model predictive control method for the variable working condition sewage treatment process, which is characterized in that an optimal control model is selected from multiple control models online according to a switching index at each sampling moment, a future response of a system is predicted according to historical information and future input of the selected optimal control model, an optimization problem in a finite time domain is solved by taking the ammonia-nitrogen concentration and the nitrate-nitrogen concentration as a control target so as to acquire a control input sequence based on the current moment, control input which firstly acts on the selected optimal control model is selected from the control input sequence, the optimal control model is reselected at the next sampling moment, optimization problem solving is carried out, and closed-loop optimization control is formed.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a multi-model predictive control method for a sewage treatment process under variable working conditions. Background technique [0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. The existing sewage treatment can be divided into three types according to their functions: physical method, biological method and chemical method. [0003] Physical method: It mainly uses physical action to separate insoluble substances in sewage, and does not change the chemical properties during the treatment process. Commonly used are gravity separation, centrifugal separation, reverse osmosis, air flotation and so on. Physical treatment of structures is relatively simple and economical, and it is used in villages and towns where the water body has a large capacity, strong self-purification abili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04C02F9/14C02F101/16
CPCG05B13/042C02F3/02C02F3/28C02F9/00C02F2301/08
Inventor 王少波贾廷纲牛玉刚邹媛媛缪幸福陈旸林梅菁黄华顾祥翔
Owner 上海环保工程成套有限公司
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