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Method for detecting integrity of filter element of ultrafiltration membrane

A technology of integrity detection and ultrafiltration membrane, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as substandard water quality and secondary pollution of tap water, and achieve rapid inspection and judgment accuracy. High, improve the effect of inspection operation efficiency

Inactive Publication Date: 2015-11-11
浙江洁弗环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Now and for a long time in the future, tap water is still the main domestic water for residents. Due to the aging of the drainage pipe network and the secondary pollution of tap water, the water quality of many households is not up to standard.

Method used

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  • Method for detecting integrity of filter element of ultrafiltration membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Use the aerosol gas source that artificially generates particulate matter, connect the hollow fiber ultrafiltration membrane filter element, adjust the particle generator in the aerosol gas source, so that the particle size of the generated particles is 0.3-0.5um, and the particle concentration is 40,000-100,000 per liter , close valve 2, open valve 1, open the gas pump and particle counter. The particle counter displays a reading of 108600, that is, the concentration of particles in the air source is 108600 before being filtered by the ultrafiltration membrane filter element; then close valve 1, open valve 2, and the particle counter displays a reading of 28 after the air source is filtered by the ultrafiltration membrane filter element. That is, the concentration of particles in the air source before being filtered by the ultrafiltration membrane filter element is 28; the calculated particle removal rate is 99.97%, and the hollow fiber ultrafiltration membrane filter e...

Embodiment 2

[0020] Use the atmosphere as the gas source, connect the hollow fiber ultrafiltration membrane filter element, close valve 2, open valve 1, turn on the gas sampling pump and particle counter, adjust the gas sampling time of the gas sampling pump, so that the concentration of particulate matter detected by the counter is 35000-55000 per liter , the number of particles detected by the particle counter is 67480, that is, the particle concentration in the air source before being filtered by the ultrafiltration membrane filter element is 67480; then close valve 1, open valve 2, and the particle counter displays after the air source is filtered by the ultrafiltration membrane filter element The reading is 82, and the calculated particle removal rate is 99.87%, which is lower than the integrity limit of 99.9%, so it is judged that the filter element is damaged.

[0021] Replace the hollow fiber ultrafiltration membrane filter element with an aerosol gas source that artificially genera...

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Abstract

The invention relates to a method for detecting integrity of a filter element of an ultrafiltration membrane. The granule counting method is adopted, aerosol with particle size ranging from 0.1 to 1 micrometer and particle concentration ranging from 30000 to 200000 each liter serves as an air source, the aerosol is conveyed to the filter element of the ultrafiltration membrane and filtrated through the filter element through an air sampling pump and a pipeline, the gas particle concentration before and after entering the filter element of the ultrafiltration membrane is detected through a particle counting machine, the removal rate of particulate matters in the air source before being filtered through the filter element and the air after being filtered is calculated, and the qualified limiting value of the removal rate is high than 99.9%. The method for detecting the integrity of the filter element of the ultrafiltration membrane is fast and high in efficiency, and the identification of the integrity of the filter element of the ultrafiltration membrane is enhanced.

Description

technical field [0001] The invention belongs to the field of detection of ultrafiltration membrane cores, and in particular relates to a detection method for the integrity of ultrafiltration membrane filter cores. Background technique [0002] With the gradual expansion of the city and the concentration of population, the issue of drinking water safety has been paid more and more attention. The most obvious consumption of bottled water and bottled water is increasing day by day, but bottled water and bottled water still account for a small proportion of domestic water consumption and the cost is also high. higher. Now and for a long time in the future, tap water is still the main domestic water for residents. Due to the aging of the drainage pipe network and the secondary pollution of tap water, the water quality of many households is not up to standard. Small household water purifiers are convenient and cost-effective, so the domestic water purification market is developin...

Claims

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Application Information

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IPC IPC(8): B01D65/10
Inventor 王瑞曹海罡王熙杜晓旭
Owner 浙江洁弗环保科技有限公司
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