Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for removing viruses

A virus and assay device technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, sustainable biological treatment, etc., can solve problems such as low treatment efficiency and reduced membrane flux

Inactive Publication Date: 2007-06-27
HITACHI LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in order to completely remove viruses in water, the membrane filtration method must use a membrane with a pore size smaller than that of the virus. Therefore, the membrane flux is reduced, and there is a disadvantage of low treatment efficiency when treating large amounts of water such as sewers.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for removing viruses
  • Method and apparatus for removing viruses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Hereinafter, preferred embodiments of the virus removal method and device of the present invention will be described in detail with reference to the accompanying drawings.

[0038] Before explaining the present invention, the theoretical basis of the present invention will be described according to Table 1.

[0039] Table 1 shows the experimental results showing the relationship between the nominal pore diameter of the membrane of the membrane filter and the membrane permeation effect of the virus based on the SS component concentration of the test water. When the concentration of SS components is high, if a membrane with a nominal pore size of several μm is used, the virus can be completely removed and the membrane flux can be maintained. As the SS component, it is assumed that the present invention is used in an activated sludge treatment device, activated sludge is used, and the activated sludge concentration (MLSS) in test water is varied.

[0040] Table 1

[0041...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
Login to View More

Abstract

In a virus removal method, a membrane filter 26 is immersed in waste water in a nitrification tank 18 of an activated sludge treatment apparatus 10 to remove the viruses existing in the waste water. The nominal pore size of the membrane is set so as to be larger than the size of virus to be removed from the waste water, and the concentration of SS components in water to be treated is controlled according to the nominal pore size of the membrane used in the membrane filter 26. To completely remove viruses in water without deteriorating the permeation flux of a membrane.

Description

technical field [0001] The invention relates to a virus removal method and device, in particular to a virus removal method and device for removing viruses from water through membrane filtration of viruses in sewer water, lake water, river water, pool water and other water. Background technique [0002] It is known that various viruses exist in water such as sewer water, lake water, river water, and pond water. Some of these various viruses are harmful to humans and livestock, and it is necessary to remove or inert the viruses in water. [0003] As a conventional general method for removing or inertizing viruses that inhabit water, there are methods of treating water containing viruses by chlorine treatment, ozone treatment, ultraviolet irradiation, heating, or the like. [0004] In addition, Japanese Unexamined Patent Publication No. 10-137783 discloses that a porous carrier with a diameter of 50 to 500 μm for inhabiting ciliates is placed in the area where the ciliates of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/10C02F1/28C02F1/44C02F3/12
CPCY02W10/10
Inventor 武村清和能登一彦大熊那夫纪
Owner HITACHI LTD