Sewage treatment process agent model construction method based on Kriging interpolation method

A kriging interpolation and sewage treatment technology, applied to calculation models, biological models, instruments, etc., can solve the problem that the amount of calculation cannot meet the real-time requirements

Active Publication Date: 2020-05-08
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

However, the amount of calculation consumed by directly using the dynamic model to calculate the results of the steady-state model cannot meet the real-time requirements of optimization and control

Method used

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  • Sewage treatment process agent model construction method based on Kriging interpolation method
  • Sewage treatment process agent model construction method based on Kriging interpolation method
  • Sewage treatment process agent model construction method based on Kriging interpolation method

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Embodiment 1

[0101] The specific steps of the present invention will be described below with the embodiment of the steady-state Kriging proxy model modeling of the activated sludge No. 1 mathematical model (ASM1).

[0102] The steady-state Kriging proxy model for constructing the output 1 of ASM1 (outlet Ss concentration Ss) includes:

[0103] Step 1: Set the dynamic model of the agent model to be simulated as ASM1, and its seven-dimensional input variables are return sludge, excess sludge, feed flow rate, feed flow rate, feed Ss concentration, feed So concentration and feed Concentration of material Xh, its three-dimensional output variables are the output Ss concentration Ss, the output So concentration So, and the output Xh concentration Xh; set the initial sampling groups of training data and verification data to 300 groups; set training samples and The value range of the input variable of the verification sample is between [0, 1]; the input variable of the verification sample is sampl...

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Abstract

The invention relates to a method for constructing an agent model of a steady-state simulation result of a sewage treatment dynamic model by utilizing a Kriging interpolation method. According to themethod, after the input variable of the sample is measured, the output value of the steady-state simulation result can be accurately predicted. The method comprises the following steps: 1) setting a sampling strategy and obtaining a training sample and a prediction sample; 2) performing steady-state simulation according to the sewage treatment dynamic model, and recording a result; 3) fitting thetraining sample according to a Kriging interpolation method optimized by a PSO algorithm, and generating a prediction value for verifying steady-state output of the sample; and 4) comparing the difference between the predicted value and the real value, and increasing the number of the training samples to repeat the above operations when the difference is greater than a set threshold. According tothe method, the agent model can be adaptively established according to the to-be-tested sample, and when the real input sample is collected, the result of steady-state simulation can be accurately andquickly predicted, and the calculation amount is greatly reduced.

Description

technical field [0001] The invention belongs to the field of sewage treatment models, and in particular relates to a method for constructing a steady-state proxy model of a sewage treatment dynamic model by using a Kriging interpolation method optimized by PSO. Background technique [0002] Activated Sludge Model 1 (ASM1) is the main process of sewage treatment, and its main reaction process includes microbial carbon oxidation, nitrification and denitrification. The model expresses the differential equations of 8 different reactions of various biochemical components in sewage under aerobic and anoxic conditions in the form of matrix. These 8 biochemical reaction processes cover the hydrolysis of different chemical components, the growth and attenuation of microorganisms, etc. figure 1 A schematic diagram of the process flow of the ASM1 model is given. [0003] However, the activated sludge No. 1 model builds a dynamic model, but the dynamic model is not needed in the actua...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/25G06N3/00
CPCG06N3/006Y02W10/10
Inventor 钱锋钟伟民杜文莉周钊彭鑫
Owner EAST CHINA UNIV OF SCI & TECH
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