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Reverse osmosis membrane module for water treatment

A technology of reverse osmosis and separation membrane, which is applied in the field of reverse osmosis separation membrane modules for water treatment to improve recovery rate, can solve the problems of reduced water purification, short time, and reduced recovery rate, so as to increase the amount of purified water and increase retention. time, the effect of improving the efficiency of module manufacturing

Inactive Publication Date: 2021-09-07
TORAY ADVANCED MATERIALS KOREA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The separation membrane module of the conventional reverse osmosis method has the following problems, that is, because the raw water contacts the membrane for a short time, the amount of recovered clean water is reduced, and the recovery rate is also relatively low.

Method used

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  • Reverse osmosis membrane module for water treatment
  • Reverse osmosis membrane module for water treatment
  • Reverse osmosis membrane module for water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] use figure 2 , Figure 4 , Figure 5 and Figure 6 Raw water was filtered by the reverse osmosis separation membrane module for water treatment shown, and the recovery rate and linear velocity were checked, and the results are shown in Table 1 below.

[0091] Invention Example 1 expresses the use of figure 2 In the case of the reverse osmosis separation membrane module for water treatment shown, the use is shown in Example 2 of the invention Figure 4 In the case of the reverse osmosis separation membrane module for water treatment shown, the use is shown by Invention Example 3 Figure 5 The case of the reverse osmosis separation membrane module for water treatment is shown, and it is used as a conventional example Figure 6 Shown is the case of a reverse osmosis separation membrane module for water treatment.

[0092] In Inventive Example 3, the inclination angle θ of the fourth guide portion was 5° (degrees).

[0093] In Invention Example 1, Invention Example...

Embodiment 2

[0113] Continuous filtration is performed by continuous driving under the same conditions as the invention example 1, invention example 2, and conventional example of the above-mentioned embodiment 1, and the change of the production water flow rate according to the driving time is detected, and in Figure 7 The result is shown.

[0114] Such as Figure 7 As shown, it can be seen that compared with the conventional example, the reduction of the production water flow rate according to the driving time of the inventive example 1 and the inventive example 2 is less, which means that compared with the conventional example, by the inventive example 1 and the inventive example 2 The membrane fouling of the membrane surface in the fabricated modules was improved.

Embodiment 3

[0116] In addition to changing the inclination angle θ of the fourth guide part in Invention 3 of Example 1 to the conditions in Table 2 below, the raw water was filtered under the same conditions as in Invention 3 of Example 1 to detect the recovery rate, as shown in Table 2 below. The result is shown.

[0117] Table 2

[0118] Example number Tilt angle (θ) (degrees) Production water flow(L / hr) Recovery rate(%) Existing example - 17.4 31 Invention Example 3 5 16.12 40.8 Invention Example 4 10 16.3 41 Invention Example 5 15 15.7 35 Comparative example 1 25 14.5 30

[0119] As shown in the above Table 2, it can be seen that compared with the conventional example, the recovery rate of Invention Example 3 to Invention Example 5 is better, and the recovery rate is further improved when the inclination angle θ is optimized.

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Abstract

Provided is a reverse osmosis membrane module for water treatment. The present invention comprises: a pipe-shaped filter tube having a plurality of purified water inlet holes formed therethrough along the longitudinal direction; a plurality of membranes wound around the filter tube; one or more feed spacers which are wound together with the membranes and form a space for raw water to move through the space; and a plurality of product water spacers which are wound together with the membranes and form a space for purified water having been filtered after passing through the membranes to move through the space, wherein a flow path extension part for forming a flow path longer than the widthwise length of a membranes is formed in at least one of gaps between the membranes and the feed spacers.

Description

technical field [0001] The present invention relates to a reverse osmosis separation membrane module for water treatment, and in more detail, relates to a reverse osmosis separation membrane module for water treatment with improved recovery rate. Background technique [0002] Generally, methods for separating various components present in a liquid include various methods such as ultrafiltration, reverse osmosis, electrodialysis, evaporation, freezing, and ion exchange. [0003] Recently, the reverse osmosis method has attracted attention due to its advantages of low energy consumption, simple operation, easy automation and less difficulty in application. [0004] In particular, the reverse osmosis separation membrane used in the reverse osmosis method is a separation membrane that can remove monovalent ions or salts that cannot be removed by microfiltration (MF) or ultrafiltration (UF), and can be effectively used to obtain Desalination process of water used for drinking wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/02C02F1/44
CPCB01D61/025C02F1/441B01D63/08B01D61/08C02F1/44B01D61/02B01D61/10
Inventor 裵敏娥洪成杓李喜京鞠志勋
Owner TORAY ADVANCED MATERIALS KOREA