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Filter for filtration collection of particles floating in water, and method for filtration collection of particles floating in water and method for control of water quality using the filter

A recycling method and particle technology, applied in the fields of filtration treatment, water/sewage treatment, chemical instruments and methods, etc., to achieve high filtration efficiency, difficult to block, and inhibit deterioration and deterioration.

Inactive Publication Date: 2009-08-26
HEALTH SCI TECH TRANSFER CENT JAPAN HEALTH SCI FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the physical filtration of suspended particles in water using filters that overlap and accumulate soluble powders is not known

Method used

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  • Filter for filtration collection of particles floating in water, and method for filtration collection of particles floating in water and method for control of water quality using the filter
  • Filter for filtration collection of particles floating in water, and method for filtration collection of particles floating in water and method for control of water quality using the filter
  • Filter for filtration collection of particles floating in water, and method for filtration collection of particles floating in water and method for control of water quality using the filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A nylon screen with a pore size of 16 μm ( figure 1 ). Then, 1.26 g (equivalent to 1.0 kg / m3) of amorphous hydroxyapatite powder (manufactured by Bio-Rad Laboratories, CHT ceramic hydroxyapatite type II) with an average particle diameter of 20 μm was used. 2 ) as filter powder, suspend the filter powder in a small amount of tap water, and make it slowly pass through the above-mentioned filter folding machine to form the filter of the present invention.

[0061] Then, 3 μm fluorescent beads (盍光贤ビズ) were suspended as target particles in purified water at a concentration of 10,000 / ml to prepare a fluorescent bead suspension. Then, for the above-mentioned filter, 1 L of purified water was suction-filtered and stabilized, and immediately continued to filter 1 L of the above-mentioned fluorescent bead suspension, and then 1 L of purified water was filtered for washing.

[0062] Remove the filter from the filter folder after filtration ( figure 2 ), recycle the filter powd...

Embodiment 2～4

[0065] Except changing the average particle diameter of filter powder, other are treated in the same manner as in Example 1, by measuring the concentration of fluorescent beads with a flow cytometer, the recovery rate of fluorescent beads is determined ( Figure 8 ).

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Abstract

The present invention provides a novel filter for filtration and recovery of suspended particles in water, which can filtrate the suspended particles in water simply and fast as well as recover the particles efficiently, and a method for filtration and recovery. The method involves the process of physically filtrating suspended particles in water using a filter comprised of soluble powder layered on a support and then dissolving the soluble powder of the filter in acid to recover the suspended particles filtrated.

Description

technical field [0001] The present invention relates to a filter for simple and high-speed filtration and efficient recovery of suspended particles present in water. Background technique [0002] Due to the contamination of tap water by Cryptosporidium, about 400,000 people in the United States in 1993 and about 9,000 people in Japan in 1996 were collectively infected, becoming a major social problem. Cryptosporidium is a pathogenic microorganism with a diameter of about 5 μm that parasitizes domestic animals and wild animals. In view of the need to prevent mass infection caused by pathogenic microorganisms in tap water or to clarify the cause of water pollution, it is urgent to establish a technology for capturing and recycling floating particles in water. [0003] Methods for trapping floating particles in water are roughly divided into a centrifugation method that uses centrifugal force of a centrifuge to separate the floating particles, and a filtration method that uses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/00B01D37/02B01J20/04C02F1/00G01N1/10
CPCG01N1/4077G01N2001/4088G01N33/18C02F1/004C02F1/281C02F2303/04C02F1/5236B01J20/043B01J20/048B01J20/28004B01J20/28026
Inventor 远藤卓郎泉山信司
Owner HEALTH SCI TECH TRANSFER CENT JAPAN HEALTH SCI FOUND
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