Method and system for detecting flock fractal features in water in different spatial dimensions

A floc and space technology, which is applied in the field of online synchronous detection of fractal characteristics of flocs in water under different spatial dimensions, can solve the problems of extremely high operational precision, reduced measurement precision and accuracy, etc., to ensure clarity, save chemicals, The effect of good social benefits

Inactive Publication Date: 2015-09-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention patent does not reflect the calculation method of characteristic parameters such as three-dimensional/mass fractal dimension of flocs or sludge particles in water, and the operation method involved

Method used

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  • Method and system for detecting flock fractal features in water in different spatial dimensions
  • Method and system for detecting flock fractal features in water in different spatial dimensions
  • Method and system for detecting flock fractal features in water in different spatial dimensions

Examples

Experimental program
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Effect test

Embodiment 1

[0067] Embodiment 1: aluminum salt floc in surface water treatment process

[0068] The system used to measure the geometric parameters of the flocs, the fractal characteristics under different spatial dimensions and the sedimentation performance includes: a self-made sedimentation system with a special structure, a CCD camera (MV-VD200SM / SC, Weishi Digital Image Technology Co., Ltd.) and supporting software , small industrial telecentric lens (TML40X65S / C, AFT Optoelectronics Technology Co., Ltd.) LED backlight (AFT-BL100, AFT Optoelectronics Technology Co., Ltd.), horizontal test bench (BT-MHT, limited telecentric optical system company), industrial computer and display.

[0069] The floc was prepared using a six-way mixer (Shenzhen Zhongrun, ZR4-6). The coagulation program was: 300r / min to mix the water sample for 0.5min; 250r / min to stir quickly for 1min; Samples were taken about 20 minutes after stirring started. Coagulant dosage and dosing point: 40mg / L aluminum sulfat...

Embodiment 2

[0070] Embodiment 2: iron salt floc in surface water treatment process

[0071] The system used to measure the geometric parameters of the flocs, the fractal characteristics under different spatial dimensions and the sedimentation performance includes: a self-made sedimentation system with a special structure, a CCD camera (MV-VD200SM / SC, Weishi Digital Image Technology Co., Ltd.) and supporting software , small industrial telecentric lens (TML40X65S / C, AFT Optoelectronics Technology Co., Ltd.) LED backlight (AFT-BL100, AFT Optoelectronics Technology Co., Ltd.), horizontal test bench (BT-MHT, limited telecentric optical system company), industrial computer and display.

[0072] The floc was prepared using a six-way mixer (Shenzhen Zhongrun, ZR4-6). The coagulation program was: 300r / min to mix the water sample for 0.5min; 250r / min to stir quickly for 1min; Samples were taken about 20 minutes after stirring started. Coagulant dosage and dosing point: 40mg / L ferric chloride (Fe...

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Abstract

Disclosed are a method and a system for detecting flock fractal features in water in different spatial dimensions. A column precipitator is provided with a mud hole at the bottom and a water inlet at the top, a sampling pipe is connected with the side of the column precipitator close to the water inlet, the sampling pipe is provided with a screw valve, a machine vision LED backlight source is arranged on one side of the column precipitator, a telecentric lens is connected with a CCD camera, the CCD camera is fixed on a horizontal testing platform, and an acquiring system composed of the horizontal testing platform, the telecentric lens and the CCD camera is arranged on the observation side of the other side of the column precipitator. The CCD camera is connected with an industrial control machine via a data line, a display is connected with the industrial control machine, one end of the sampling pipe is connected with the column precipitator, and the other end of the sampling pipe is provided with a sampling inlet.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a method and a system for synchronously detecting the fractal characteristics of flocs in water in different spatial dimensions on-line. Background technique [0002] Today, coagulation is still an irreplaceable treatment unit in the water treatment process, and its effect directly affects the subsequent solid-liquid separation effect and the final effluent water quality. In recent years, with the development of the application of molecular biology in the field of water treatment technology, the agents used are not limited to chemical flocculants, biological flocculants have also been widely used and achieved better results in the treatment of special water quality. However, no matter what kind of agent is used, a good flocculation effect is always the goal pursued by related engineering technologies and researchers. [0003] At present, the techniques used to indicate the...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/04
Inventor 李星苏兆阳杨艳玲许美玲
Owner BEIJING UNIV OF TECH
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