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Method and system for determining free precipitation speed of floccules/mud particles

A sludge particle and sedimentation velocity technology, which is applied in fluid velocity measurement, velocity/acceleration/impact measurement, measuring devices, etc., to achieve stable continuous image effects, high measurement accuracy, and simple operation

Inactive Publication Date: 2010-03-17
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for determining the free settling velocity of flocs / sludge particles to solve the problem that simple devices cannot be used to determine the settling velocity of flocs / sludge particles in the existing technology

Method used

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  • Method and system for determining free precipitation speed of floccules/mud particles
  • Method and system for determining free precipitation speed of floccules/mud particles
  • Method and system for determining free precipitation speed of floccules/mud particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1: Determination of sedimentation velocity of polymerized ferric chloride-humic acid flocs in water

[0064] 1 Test method:

[0065] The floc sedimentation velocity measurement test device is mainly composed of a CCD camera, a microscope lens, a light source, a computer, a transmission line, a sedimentation column and a ruler. The settling column is a semi-cylindrical barrel with a diameter of 40mm and a height of 350mm; the CCD camera system includes a CCD camera (HV1302UM, Daheng Company), a microscope lens (AVENIR TV Zoom Lens SR12575, 12.5mm-75mmF1.8, Japan), image Shooting software (Daheng Imavision, Daheng Company) and computer, etc.

[0066] When shooting, adjust the CCD system and light source. The individual flocs were then transferred vertically into deionized water in a settling column, placed in the center of the settling column, and allowed to settle freely. When it is displayed on the computer screen that the flocs enter the field of view of the...

Embodiment 2

[0077] Embodiment 2: Determination of the settling velocity of sludge particles in the bioreactor

[0078] The sludge particle settling velocity measurement test device is mainly composed of a CCD camera, a microscope lens, a light source, a computer, a transmission line, a settling column and a scale. The settling column is a semi-cylindrical barrel with a diameter of 40mm and a height of 350mm; the CCD camera system includes a CCD camera (HV1302UM, Daheng Company), a microscope lens (AVENIR TV Zoom Lens SR12575, 12.5mm-75mmF1.8, Japan), image Shooting software (Daheng Imavision, Daheng Company) and computer, etc.

[0079] When shooting, adjust the CCD system and light source. Then the individual sludge particles are vertically moved into the deionized water of the settling column and placed in the center of the settling column to allow the sludge particles to settle freely. When it is displayed on the computer screen that the sludge particles enter the field of view of the...

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Abstract

The invention discloses method and system for determining the free precipitation speed of floccules / mud particles. The method comprises the following steps: continuously shooting the precipitating floccules / mud particles by a CCD camera installed with a microlens; and according to the precipitation distance and shooting time of the floccules / mud particles shown in pictures, calculating the free precipitation speed of the floccules / mud particles. The invention can shoot continuous pictures at different time points in the free precipitation process of the floccules / mud particles in a drinking water or waste water treatment system and a water environment to determine the precipitation speed of the floccules / mud particles, so as to research the physical hydraulic characteristics of the floccules / mud particles and provide a basis for environment pollution control.

Description

technical field [0001] The present invention relates to a method and system for determining the free settling velocity of floc / sludge particles, in particular to a method and system for determining the free settling speed of flocs / sludge particles in drinking water or wastewater treatment systems and water environments at different time points Method and system for determining settling velocity of floc / sludge particles with sequential images. Background technique [0002] At present, some studies only use graduated cylinders to simply determine the settling velocity of flocs / sludge particles over a few millimeters, but the accuracy is not enough. Chinese invention patent application "method for measuring speed using wireless terminal and system for realizing the method (application number: 200610126530.6; publication number CN1984248)" proposes a method for using a wireless terminal to measure the speed of a moving object in the preview mode of the camera A system and metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/18
Inventor 王毅力杜白雨卢佳刘杰
Owner BEIJING FORESTRY UNIVERSITY
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