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Reclaimed water reuse membrane alkaline cleaning agent

A cleaning agent and reclaimed water technology, which is applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of unable to meet the pollution cleaning requirements of pollutant types, achieve good cleaning effect, save cleaning agents, and clean wide range of effects

Inactive Publication Date: 2017-09-12
SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkaline cleaning agents used in general systems are sodium hydroxide and disodium ethylenediamine tetraacetate, which cannot meet the cleaning needs of many types of pollutants and serious pollution in the reclaimed water reuse system

Method used

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  • Reclaimed water reuse membrane alkaline cleaning agent
  • Reclaimed water reuse membrane alkaline cleaning agent
  • Reclaimed water reuse membrane alkaline cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Alkaline Cleaning of Reclaimed Water Reuse Membrane 1#

[0025] Put the following components into the reaction kettle in turn, and the mixture is uniform at a temperature of 25°C:

[0026]

Embodiment 2

[0027] Embodiment 2, reclaimed water reuse membrane alkaline cleaning 2#

[0028] Put the following components into the reaction kettle in turn, and the mixture is uniform at a temperature of 25°C:

[0029]

[0030]

Embodiment 3

[0031] Embodiment 3, reclaimed water reuse membrane alkaline cleaning 3#

[0032] Put the following components into the reaction kettle in turn, and the mixture is uniform at a temperature of 25°C:

[0033]

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PUM

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Abstract

The present invention provides a reclaimed water reuse membrane alkaline cleaning agent, which is prepared from the following components by mass: 1-15% of an anionic surfactant, 0.1-5% of a strong alkali weak acid salt, 3-25% of a metal chelating agent, 1-15% of phosphate, and the balance of water. The reclaimed water reuse membrane alkaline cleaning agent of the present invention can provide advantages of excellent cleaning effect, wide cleaning range and cleaning agent consumption saving during membrane cleaning.

Description

technical field [0001] The invention relates to the cleaning field of reverse osmosis membranes, in particular to an alkaline cleaning agent for reclaimed water reuse membranes. Background technique [0002] The reverse osmosis membrane is the core component to realize reverse osmosis. It is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membrane. Generally made of polymer materials. Such as cellulose acetate film, aromatic polyhydrazide film, aromatic polyamide film. The diameter of surface micropores is generally between 0.5 and 10nm, and the permeability is related to the chemical structure of the membrane itself. Some polymer materials have good repellency to salt, but the water penetration rate is not good. Some polymer materials have more hydrophilic groups in their chemical structure, so the water penetration rate is relatively fast. Therefore, a satisfactory reverse osmosis membrane should have an app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/06
CPCB01D65/02B01D2321/168
Inventor 夏志先张金山
Owner SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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