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Chemical cleaning method for RO/NF membrane system consisting of two arrays

A technology for chemical cleaning and membrane separation, applied in chemical instruments and methods, semi-permeable membrane separation, membranes, etc., can solve the problems of unclear specific pollutants, long cleaning time, etc., to achieve a long chemical cleaning cycle, reduce time, the effect of improving cleaning efficiency

Active Publication Date: 2016-05-18
COWAY ENTECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, the time required for cleaning is longer due to unclear specific pollutants

Method used

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  • Chemical cleaning method for RO/NF membrane system consisting of two arrays

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Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art to which the present invention pertains can easily implement the present invention. However, the present invention can be embodied in various embodiments, and the present invention is not limited to the examples described below.

[0030] In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar structural elements throughout the specification.

[0031] figure 1 A block diagram of an RO / NF separation membrane system composed of two columns is briefly shown in an embodiment of the present invention.

[0032] refer to figure 1 , the RO / NF separation membrane system 100 composed of two columns in the embodiment of the present invention can be applied to a water treatment device for purifying drinking water, sewa...

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Abstract

The present invention relates to a chemical cleaning method for an RO / NF membrane system consisting of two arrays and, more particularly, to a chemical cleaning method for an RO / NF membrane system consisting of two arrays, capable of predicting a substance that causes membrane fouling and chemically cleaning a reverse osmosis membrane module and a nanofiltration membrane module using a chemical cleaning agent suitable for the substance, thereby restoring and maintaining the filtration performance of the membrane. The membrane fouling phenomenon occurs due to various causes during the membrane filtering process. In this case, the present invention can enhance cleaning efficiency by predicting a substance that causes membrane fouling and performing chemical cleansing with a chemical cleaning agent suitable for the substance. Accordingly, a longer chemical cleaning cycle is guaranteed, thereby reducing the time consumed for chemical cleaning, chemical costs, etc.

Description

technical field [0001] The present invention relates to a chemical cleaning method for RO / NF separation membrane system, that is, to predict the causative substance causing membrane fouling, and to use a chemical cleaning agent suitable for the substance to chemically clean the reverse osmosis membrane and the nanofiltration membrane, thereby recovering and Maintain the filtration performance of the separation membrane. Background technique [0002] A separation membrane (Membrane) is a membrane that selectively passes a specific component to separate a mixture. The separation membrane is a porous membrane (Porous Membrane) having pores (pores) having a size of several nanometers (nm) or more. The separation membrane can separate organic pollutants, inorganic pollutants, parasites, bacteria, etc. contained in water. [0003] According to the size of the pores, the separation membrane is divided into microfiltration membrane (MF), ultrafiltration membrane (UF), nanofiltrati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/06B01D65/02B01D61/58B01D61/02
CPCB01D65/02B01D61/025B01D61/027B01D61/12B01D61/16B01D2317/022B01D61/029B01D65/06B01D61/02B01D61/14B01D61/58
Inventor 朴镕珉李周衍权五成
Owner COWAY ENTECH CO LTD
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