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Method for relieving membrane protein pollution by FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system

A peracetic acid and catalytic filtration technology, which is applied in the field of membrane protein pollution mitigation, can solve the problems of ceramic membrane protein pollution that cannot be effectively solved, low filtration efficiency, high operation and maintenance costs, etc., to improve anti-pollution performance, high oxidation efficiency, Effect of Membrane Fouling Reduction

Active Publication Date: 2022-08-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current ceramic membrane protein pollution cannot be effectively solved, and the filtration efficiency is low, and the operation and maintenance cost is high, and a kind of FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system is provided to relieve membrane protein pollution. pollution method

Method used

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  • Method for relieving membrane protein pollution by FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system
  • Method for relieving membrane protein pollution by FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system
  • Method for relieving membrane protein pollution by FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system

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Embodiment 1

[0030] A FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system of the present embodiment is constructed as follows:

Embodiment 2

[0034] The preparation method of the FeOCl modified ceramic membrane in the in-situ coupling of the FeOCl modified ceramic membrane described in Example 1 in the peracetic acid catalytic filtration system is as follows:

[0035] FeOCl modified ceramic membranes were prepared by solution infiltration and heating calcination. Among them, a flat circular ceramic membrane is used as the catalytic membrane substrate, and its main components are titanium dioxide and zirconium dioxide, the molecular weight cut off is 300kDa, the diameter is 47mm, and the thickness is 2.5mm. The purity of ferric chloride hexahydrate required for preparation is ≥99%.

[0036] A certain amount of ferric chloride hexahydrate powder was weighed with an electronic balance and dissolved in absolute ethanol, and magnetically stirred at 300 rpm to obtain a homogeneous solution. The ceramic membrane substrate was placed in a dry glass petri dish and immersed in the above solution, followed by sonication at 40...

Embodiment 3

[0039] The FeOCl modified ceramic membrane described in Example 1 in-situ coupled with the peracetic acid catalytic filtration system has the following effects on relieving membrane protein pollution:

[0040] The model contaminant used was bovine serum albumin and the oxidant used was peracetic acid. Among them, operation mode I is the catalytic filtration mode using FeOCl modified ceramic membrane and adding peracetic acid oxidant during filtration; operation mode II is the membrane filtration mode using base ceramic membrane and adding peracetic acid oxidant during filtration; operation mode III is using FeOCl modified ceramic membrane, membrane filtration mode without adding oxidant during filtration; operation mode IV is the membrane filtration mode using base ceramic membrane, without adding oxidant during filtration.

[0041] Scanning electron microscopy (SEM) was used to characterize the microscopic morphology of bovine serum albumin on the surface and cross-section of t...

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Abstract

The invention discloses a method for relieving membrane protein pollution by a FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system, and belongs to the technical field of membrane pollution treatment. According to the method, FeOCl loaded on a flat ceramic membrane is used as a catalyst, peracetic acid is used as an oxidizing agent, a FeOCl modified ceramic membrane in-situ coupling peracetic acid catalytic filtration system is constructed, reactive oxygen species are generated in situ in the membrane during filtration, bovine serum albumin is used as a protein model pollutant, and the effect of rapidly and efficiently relieving membrane protein pollution is achieved. Compared with a traditional ceramic membrane filtration mode without adding an oxidizing agent, in a catalytic filtration mode of activating peracetic acid by the FeOCl modified ceramic membrane, the reduction degree of membrane flux is reduced by one time, bovine serum albumin on the surface of the membrane and in membrane holes is obviously degraded, and great membrane pollution control application prospects are shown.

Description

technical field [0001] The invention belongs to the technical field of membrane fouling treatment. In particular, it relates to a method for relieving membrane protein pollution by in-situ coupling of a FeOCl modified ceramic membrane with a peracetic acid catalytic filtration system. Background technique [0002] Membrane separation water treatment technology has the advantages of no phase change, small footprint, and high treatment efficiency. It is one of the leading technologies for water purification and reuse. Among them, inorganic ceramic membranes have excellent properties such as stable chemical and thermodynamic properties, high mechanical strength, and corrosion resistance, and are widely used in the field of water treatment. However, the colloid and protein fouling problems faced by ceramic membrane filtration are serious, which reduces the efficiency of ceramic membrane filtration and increases the operation and maintenance cost of membrane filtration. Therefo...

Claims

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Application Information

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IPC IPC(8): B01D67/00B01D71/02B01J27/128C04B41/85
CPCB01D67/0088B01D67/0095B01D71/024B01D71/02C04B41/5012C04B41/85C04B41/009B01J27/128B01D2323/46B01D2325/10B01D2325/02B01D2323/12C04B41/4535
Inventor 赵雨萌赵岩鑫于欣马军王润之
Owner HARBIN INST OF TECH
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