Activated sludge floc analysis method based on MATLAB

A technology of activated sludge and analysis methods, which is applied in the analysis of materials, image analysis, material analysis by optical means, etc., can solve the boring analysis process, the inability to analyze and characterize the growth state of bacteria, the density of flocs, and the irregularity of floc boundaries. degree, the impact of analysis results is relatively large, etc., to achieve the effect of ensuring objectivity

Inactive Publication Date: 2017-02-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

[0002] The traditional analysis of activated sludge flocs mainly uses the method of manual observation and counting under a microscope to study the intuitive indicators such as floc area, roundness, and hyphae length, which characterize the floc morpholo

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  • Activated sludge floc analysis method based on MATLAB
  • Activated sludge floc analysis method based on MATLAB
  • Activated sludge floc analysis method based on MATLAB

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[0059] The activated sludge floc analysis method of the present invention uses MATLAB analysis software as a platform. The analysis method of the present invention will be described in detail below by taking a (first type) and bar (second type) two kinds of sludge floc images as examples.

[0060] 1. Collect images

[0061] Two kinds of fresh activated sludge (a and b) were taken to make observation slides and observed under a microscope. Taking the complete activated sludge bacteria micelles as the standard, 10 fields of view were selected for observation, photographed and collected images.

[0062] 2. Image processing

[0063] (1) Read in the captured image

[0064] Enter the MATLAB software, call the imread () function, and read in the collected image.

[0065] I=imread('F:\MATLAB Image\Dilution Stain 2001.tif');% read in image

[0066] figure, imshow(I); % display the image.

[0067] (2) Convert the RGB image to a grayscale image

[0068] "Grayscale" can be thought o...

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Abstract

An activated sludge floc analysis method based on an MATLAB comprises the following steps that 1, images are collected; 2, the images are processed, wherein the collected images are read in, the RGB images are converted into gray level images, noise is removed, image binaryzation is carried out, open operation and closed operation are carried out, edge smoothing treatment is carried out, a target zoogloea is determined and marked, filling is carried out, target area grey-scale maps are drawn, the sum of the grey levels of the target area grey-scale maps is calculated, the area of a target area is calculated, the density of the target area is calculated, and the boundary of the target area is acquired; 3, feature information is extracted, wherein the dimensional index of the zoogloea is calculated, the morphological index of the zoogloea is calculated, and the filamentous bacterium index is calculated. According to the method, MATLAB analysis software is adopted as a platform, the image analysis technology is applied to quantitative analysis of activated sludge floc, and the objectivity, reliability and high efficiency of the analysis result are guaranteed.

Description

technical field [0001] The invention relates to a method for analyzing the compactness and edge regularity of activated sludge flocs by using images, and belongs to the technical field of analyzing activated sludge flocs in the sewage biological treatment process. Background technique [0002] The traditional analysis of activated sludge flocs mainly uses the method of manual observation and counting under a microscope to study the intuitive indicators such as floc area, roundness, and hyphae length, which characterize the floc morphology, but cannot analyze and characterize the growth of bacteria in the flocs. state, floc compactness, and floc boundary irregularity, and the whole analysis process is boring and time-consuming, and the analysis results are greatly affected by subjectivity. Contents of the invention [0003] The invention aims at the shortcomings of the traditional activated sludge floc analysis technology, and provides a MATLAB-based activated sludge floc i...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01B11/02G01B11/24G06T7/13G06T7/136G06T7/181G06T7/90
CPCG01B11/02G01B11/24G01N21/84G06T7/0012
Inventor 孙丽风毕学军李倩程丽华刘长青
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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