Hydrophobic Restoration Process of Degassing Membrane
A degassing membrane and hydrophobic technology, applied in the direction of membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems that the degassing membrane cannot continue to be used, the phenomenon of hydrophilicity, and the increase in operating costs, etc., achieve Good economic benefits, remarkable effect, and the effect of reducing operating costs
Active Publication Date: 2018-10-26
SUZHOU EDGECROSS MEMBRANE TECH
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Problems solved by technology
However, when the existing degassing membrane is used to treat wastewater with low surface tension, it will produce hydrophilic phenomenon after long-term operation, and the degassing membrane that produces hydrophilicity cannot continue to be used.
In response to this problem, the existing practice is to discard the membrane, which will increase the operating cost
Method used
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[0020] The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structural changes made by these implementations Equivalent transformations or substitutions all fall within the protection scope of the present invention.
[0021] combine figure 1 , 2 As shown, the degassing membrane hydrophobic recovery process of the present invention comprises the following steps:
[0022] S1. Send air from the top inlet A and the side inlet B on the upper part of the membrane contactor where the degassing membrane is located, and purge the residual water on the degassing membrane, and the purged air and residual water will flow from the membrane The bottom outlet C and the side outlet D of the lower part of the contactor are discharged.
[0023] Step S1 is use...
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The invention provides a degassing membrane hydrophobicity recovering technology. The degassing membrane hydrophobicity recovering technology comprises the following steps: S1, feeding air from a top end inlet and a side end inlet of the upper part of a membrane contactor with a degassing membrane, purging residual water on the degassing membrane, and discharging the purged air and the residual water from a bottom end outlet and a side end outlet of the lower part of the membrane contactor; S2, when the residual water does not exist, closing a bottom valve of the bottom end outlet of the lower part of the membrane contactor; S3, reducing air purging pressure, feeding air from the top inlet of the upper part of the membrane contactor with the degassing membrane, carrying out transmembrane purging on the degassing membrane, and discharging the purged air and the residual water from the side end inlet and the side end outlet which are respectively positioned in the upper part and the lower part of the membrane contactor; and S4, when the residual water does not exist, stopping transmembrane purging. By the degassing membrane hydrophobicity recovering technology, hydrophobicity of the degassing membrane can be recovered, and the degassing membrane can be repeatedly used. The degassing membrane hydrophobicity recovering technology is simple in technology and remarkable in effect; the problem that the degassing membrane is discarded after being in a hydrophilic state can be solved; and the running cost is reduced.
Description
technical field [0001] The invention relates to the technical field of environmental protection, in particular to a process for recovering the hydrophobicity of a degassing membrane. Background technique [0002] The membrane contactor mainly relies on the degassing membrane in it to work. However, when the existing degassing membranes are used to treat wastewater with low surface tension, hydrophilic phenomena will occur after long-term operation, and the degassing membranes that produce hydrophilicity cannot continue to be used. In response to this problem, the existing practice is to discard the membrane, which will increase the operating cost. [0003] Therefore, in view of the above problems, it is necessary to propose a further solution. Contents of the invention [0004] The purpose of the present invention is to provide a degassing membrane hydrophobic recovery process to overcome the shortcomings of the prior art. [0005] In order to achieve the above-mentione...
Claims
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IPC IPC(8): B01D65/00
CPCB01D65/02B01D2321/18
Inventor 丁飞
Owner SUZHOU EDGECROSS MEMBRANE TECH