Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Washing solution, detergent and washing method for water contact components

A washing liquid and water contact technology, applied in chemical instruments and methods, inorganic non-surface-active washing compositions, liquid soaps, etc., can solve the unrecorded use of detergents that selectively permeate membranes, etc., and achieve excellent bactericidal effects , High washing effect

Active Publication Date: 2020-09-11
KURITA WATER INDUSTRIES LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent Document 2 does not describe the use of detergents that selectively permeate membranes

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
  • Washing solution, detergent and washing method for water contact components
  • Washing solution, detergent and washing method for water contact components
  • Washing solution, detergent and washing method for water contact components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0092] ※Example 2 (molar concentration of sulfamic acid: Cl 2 Molar concentration = 0.009:0.017)

Embodiment 3

[0093] Embodiment 3 (sulfamic acid molar concentration: Cl 2 Molarity = 0.004:0.017)

Embodiment 4

[0094] Embodiment 4 (sulfamic acid molar concentration: Cl 2 Molar concentration = 0.015:0.017)

[0095] [investigation]

[0096] Examples 2 to 4 showed the same immediate effect as the sodium hypochlorite of Comparative Example 5, and also showed a lower inter-membrane pressure difference (higher cleaning effect) than the sodium hypochlorite in the final reaching differential pressure.

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

No PUM Login to View More

Abstract

A washing solution and detergent for water contact components containing free chlorine and combined chlorine compounds, total chlorine (Cl 2 ) to the molar ratio of the nitrogen atom N from the combined chlorine compound (Cl 2 / N) is 1 or more, the washing solution has a pH of 9 or more, and the detergent has a pH of 12 or more. The washing liquid can be prepared by diluting the washing agent with water. A method of washing a water-contacting member, using the washing liquid to wash the water-contacting member.

Description

technical field [0001] The present invention relates to a washing solution, detergent and washing method for washing water-contact members such as UF membrane (ultrafiltration membrane), MF membrane (microfiltration membrane), filter, piping, pressure gauge, and flowmeter. Background technique [0002] In the membrane separation device (turbidity removal membrane device) using UF membrane and MF membrane, the separation membrane will adhere to dirt, so the cleaning fluid (water and / or gas) is generally supplied intermittently every 30 seconds to 60 minutes for physical cleaning of the membrane. washing. [0003] Since the dirt that cannot be removed even with this physical washing is deposited on the membrane, the filtration capacity of the membrane gradually decreases. [0004] Therefore, in the turbidity removal membrane device, it is necessary to use medicines regularly or irregularly for medicine washing. [0005] In Patent Document 1, it is described that a membrane 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): B01D65/06C11D7/08C11D7/10C11D17/08
CPCB01D65/06C11D7/08C11D7/10C11D17/08
Inventor 岩见贵子川胜孝博田中爱理
Owner KURITA WATER INDUSTRIES LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com