KR100602428B1 - A bridge typed cartridge module filled with hollow fiber membrane - Google Patents

Abstract

The present invention relates to a bridge type cartridge module with a hollow fiber membrane.

The present invention provides a tubular inner core (2) installed inside the module, a mesh type outer case (1) constituting the left and right outer walls of the module, a hollow fiber membrane (3) arranged between the tubular inner core and the mesh outer case, the module Located at the top and bottom, respectively, consists of a module cap (4) and a rubber seal (5) attached to the upper surface of the module cap formed with a water outlet 7 in the center.

The present invention is excellent in filtration efficiency and easy to insert into an existing housing.

Hollow fiber membrane, bridge type, cartridge, module, ultrafiltration membrane, mesh type, inner core, filtration efficiency, easy installation

Description

Hollow fiber membrane cartridge module {A bridge typed cartridge module filled with hollow fiber membrane}             

1 is a vertical cross-sectional view of the module of the present invention.

Figure 2 is a schematic diagram showing the water purification mechanism of the module of the present invention.

3 is a horizontal cross-sectional view of the module of the present invention.

4 is a vertical cross-sectional view of two modules of the present invention connected.

※ Explanation of Codes on Major Parts of Drawings

DESCRIPTION OF SYMBOLS 1 Reticulated outer case 2: Tubular inner core 3: Hollow fiber membrane

4: module cap 5: rubber seal 6: module connection cap 7: water purification outlet

The present invention relates to a hollow fiber membrane bridge type cartridge module excellent in filtration efficiency, easy to insert into the existing housing.

Until now, as a module for water treatment, a bridge type cartridge module using a nonwoven fabric or a flat film has been mainly used. The module wraps the nonwoven fabric in a mesh type core rod and covers the top and bottom caps, or protects both sides of the flat film membrane with a nonwoven fabric, and then folds it into a fan shaped mesh between the outer case and the core case. It is prepared in the form to cover the top and bottom caps.

The raw water introduced through the outer case is passed through the nonwoven fabric or the flat membrane, and the permeated water is discharged through the inner core. However, in the case of the nonwoven fabric or the microfiltration membrane, the size of the filter pores is about 0.2 micron to several microns, so that the filtering performance is deteriorated in the field requiring a high treatment, and the flat type increases the filtration area by a certain amount even when the module is manufactured by folding into a scalloped form. it's difficult.

On the other hand, ultrafiltration hollow fiber membrane modules of a type that attaches the upper and lower surfaces or the side surfaces of the cylindrical case to the housing using flanges, unions or screws have been used. However, the module has a problem in that the installation process in the housing is complicated and the initial installation cost is high.

An object of the present invention is to provide a hollow fiber membrane bridge type cartridge module that is excellent in filtration efficiency and easy to insert into an existing housing while solving the problems of the prior art.

An object of the present invention is to provide a hollow fiber membrane bridge cartridge module having excellent permeability and water removal performance (hereinafter referred to as "filtration efficiency") and easy insertion into an existing housing during water treatment.

The present invention relates to a hollow fiber membrane bridge type cartridge module.

More specifically, the present invention provides a tubular inner core 2 installed inside the module, a mesh type outer case 1 constituting the left and right outer walls of the module, and a hollow fiber membrane 3 arranged between the tubular inner core and the mesh outer case. ), A hollow fiber membrane bridge type cartridge module, characterized in that the module cap 4 and the rubber seal (5) attached to the upper surface of the module cap is formed on the top and bottom of the module and the water discharge outlet (7) is formed in the center, respectively. It is about.

Hereinafter, the present invention will be described in detail.

The present invention is characterized in that an ultrafiltration hollow fiber membrane is provided between the mesh outer case 1 and the tubular inner core 2 instead of the conventional nonwoven fabric or microfiltration membrane.

The tubular inner core 2 is provided in the center inside the module of this invention. At the center of the tubular inner core 2 is a hollow portion. The tubular inner core 2 prevents the raw water flowing into the module through the mesh outer case 1 from penetrating into the hollow in the core 2. As a result, only the filtered water (constant water) flows through the hollow part in the core 2.

A mesh type outer case 1 is provided on the left and right outer walls of the module of the present invention. In addition, a hollow fiber membrane 3 is arranged between the tubular inner core 2 and the mesh outer case 1. The module cap 4 of the present invention is provided with a module cap 4 formed with a water outlet 7 at the center and at the top and bottom of the module, and a rubber seal 5 is attached to the surface of the module cap 4 (upper surface). The rubber seal 5 serves to separate the flow path in the housing.

Meanwhile, the present invention includes a case in which a module connection cap 6 is installed instead of the module 4 positioned at the bottom of the module in order to connect two modules.

Looking at the water treatment mechanism of the present invention, raw water is introduced into the module through the mesh outer case 1 as shown in FIG. 2. The introduced raw water is converted into purified water while passing through the hollow fiber membrane 3. The purified water flows into the empty space of the module cap 4 along the longitudinal direction of the hollow fiber membrane 3, and then exits out of the module through the purified water outlet 7 formed in the center of the module cap 4 along the hollow portion of the tubular inner core. .

The present invention uses a hollow fiber membrane having a smaller pore size but a larger filtration area than the conventional microfiltration membrane filter, so that it is excellent in removing bacteria such as bacteria, fine particles, or algae spores, and at the same time, it can continuously maintain the permeate flow rate. great.

In the present invention, the method for measuring the pressure difference (differential pressure) and bacteria removal ability between the front and rear surfaces of the cartridge module is as follows. The differential pressure of the cartridge module is closely related to the transmission performance.

Differential pressure (kg / ㎠)

Measure the pressure difference between the front and back of the cartridge module while changing the cumulative flow rate (ton) with the instantaneous flow rate fixed at 10ℓ / min.

· Bacteria removal

After the raw water having a certain number of bacteria is permeated through the cartridge module, the number of bacteria in the permeate (purified water) is measured, and the bacterial removal rate is obtained by the following equation.

× 100Germ removal rate (%) =

× 100

At this time, Pseudomonas Diminuta (ATCC 19146) is used as the target strain.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1

7,000 polysulfone hollow fiber membranes (pore size 0.01 μm) having an inner diameter of 0.3 mm and an outer diameter of 0.5 mm were arranged between a tubular inner core and a mesh outer case of a polypropylene cartridge module (length 25 cm × diameter 7 cm) having the structure shown in FIG. After fixing the upper end and the lower end of the hollow fiber membrane with a polyurethane adhesive to produce a hollow fiber membrane cartridge module. The results of measuring the pressure difference (differential pressure-kg / cm 2) and bacteria removal capacity of the prepared hollow fiber membrane cartridge module are shown in Tables 1 and 2.

Comparative Example 1

A microfiltration membrane cartridge module was manufactured under the same process and conditions as in Example 1 except that a nonwoven fabric having a pore size of 1.0 μm was used instead of the hollow fiber membrane. The results of measuring the differential pressure and the bacteria removal ability of the manufactured cartridge module are shown in Table 1 and Table 2.

Comparative Example 2

A microfiltration membrane cartridge module was manufactured under the same process and conditions as in Example 1 except that a nonwoven fabric having a pore size of 0.6 μm was used instead of the hollow fiber membrane. The results of measuring the differential pressure and the bacteria removal ability of the manufactured cartridge module are shown in Table 1 and Table 2.

Result of differential pressure measurement of cartridge module Cumulative flow rate (ton) Differential pressure (kg / ㎠) Example 1 Comparative Example 1 Comparative Example 2 10 0.23 0.15 0.22 20 0.32 0.20 0.33 30 0.34 0.28 0.36 40 0.36 0.30 0.37 50 0.41 0.34 0.40 60 0.45 0.40 0.47

Result of bacteria removal ability of cartridge module Cumulative flow rate (ton) Bacteria in Raw Water Example 1 Comparative Example 1 Comparative Example 2 Number of bacteria in purified water % Removal Number of bacteria in purified water % Removal Number of bacteria in purified water % Removal 10 5.2 × 10 ¹¹ 0 100 2.2 × 10 ¹¹ 57.7 1.2 × 10 ³ 99.9 20 8.8 × 10 ¹¹ 0 100 3.4 × 10 ¹¹ 61.4 5.2 × 10 ³ 99.9 30 1.2 × 10 ¹² 0 100 5.8 × 10 ¹¹ 51.7 1.4 × 10 ⁴ 99.9 40 3.6 × 10 ¹² 0 100 1.8 × 10 ¹² 50.0 2.1 × 10 ⁴ 99.9 50 2.2 × 10 ¹² 0 100 1.0 × 10 ¹² 54.5 1.5 × 10 ⁴ 99.9 60 6.4 × 10 ¹² 0 100 3.7 × 10 ¹² 42.2 2.8 × 10 ⁴ 99.9

The module of the present invention is excellent in permeation performance and excellent removal performance of bacteria and the like by continuously maintaining excellent permeation flow rate. In addition, the module of the present invention is easy to insert into the existing housing is easy to install and low installation cost.

Claims (3)

Tubular inner core (2) installed inside the module, mesh type outer case (1) constituting the left and right outer wall of the module, hollow fiber membrane (3) arranged between the tubular inner core and the mesh outer case, the top and bottom of the module The hollow fiber membrane bridge type cartridge module, characterized in that consisting of a module cap (4) and a rubber seal (5) attached to the upper surface of the module cap is formed in each of the water outlet (7) in the center. The hollow fiber membrane bridge type cartridge module according to claim 1, wherein a cap for connecting the module is installed at the top or bottom of the module. The hollow fiber membrane bridge type cartridge module according to claim 1, wherein the tubular inner core (2) blocks raw water from entering the hollow core part.

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