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Wound Membrane Module

A roll-type membrane and module technology, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as increasing the operating cost of the device, reducing the service life of membrane elements, shutting down for cleaning, etc., to improve operating efficiency, Life extension effect

Inactive Publication Date: 2018-03-27
四川民生管业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, its disadvantage is that once the membrane is polluted during use, it needs to be shut down for cleaning, and the membrane elements need to be backwashed with clean water every day, and the membrane elements should be cleaned with acid and alkali on a regular basis.
The damage caused by the traditional cleaning method to the membrane element increases the discharge of wastewater, reduces the service life of the membrane element, and increases the operating cost of the device.

Method used

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  • Wound Membrane Module
  • Wound Membrane Module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The present invention includes a roll-type membrane element 5, a central tube 6, and a housing 7. The roll-type membrane element 5 is a first hydrophobic cloth 9 sandwiched between two permeable membranes 10, and the three sides are heat-sealed to form a rectangular long envelope. For the flat diaphragm, the unclosed opening of the flat diaphragm is bonded to the central tube with the hole facing the central tube, and a flow channel spacer net 11 is lined between the two rolled membrane elements 5, and a plurality of flat plate diaphragms and the flow channel spacer net 11 Wound on the central tube to form a spiral coil, the spiral coil is located in the shell 7, the central tube 6 is located on the axis of the shell, its upper and lower ends are connected with the sealing flange 4, and the water-permeable pad 8 is located between the spiral coil and the sealing flange 4 Between, the water inlet chamber between the lower end of the shell 7 and the sealing flange 4 has a ...

Embodiment 2

[0023] It includes a number of rolled membrane elements 5, a central tube 6, and a shell 7. The rolled membrane element 5 is a first hydrophobic cloth 9 sandwiched between two permeable membranes 10, and the three sides are heat-sealed to form a rectangular long envelope-like flat plate Diaphragm: Bond the unclosed opening of the flat-plate diaphragm to the hole of the central tube on the central tube, and at least one flow channel spacer net 11 is lined between the two rolled membrane elements 5, and multiple flat-plate diaphragms and flow channel spacer nets 11 Wound on the central tube to form a spiral coil, the spiral coil is located in the shell 7, the central tube 6 is located on the axis of the shell, its upper and lower ends are connected with the sealing flange 4, and the water-permeable pad 8 is located between the spiral coil and the sealing flange 4 Between, the water inlet chamber between the lower end of the shell 7 and the sealing flange 4 has a raw water inlet 1...

experiment example

[0025] The raw water from the raw water inlet 1 passes through the periphery of the flange plate 4 and the permeable pad 8, and enters the stainless steel membrane shell 7. Under the action of pressure, the raw water enters the hydrophobic cloth 9 through the permeable membrane 10, and enters the water collecting pipe 6 under the action of pressure to become Purified water, the outflow of the purified water outlet 2 is collected; a part of the raw water is discharged along the membrane column through the permeable pad 8 along the periphery of the flange 4 and the permeable pad 8 through the concentrated water outlet 3 to discharge the concentrated water.

[0026] A and B are electrodes. When the membrane column is working, the polarity of the direct current on the A and B electrodes changes every 5-10 minutes. A is positive and B is negative. After 5-10 minutes, it becomes A negative and B positive. In this way, cycle once every 5-10 minutes, and the test voltage is 12V-36V.

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Abstract

The invention discloses a long-acting spiral-wound membrane module which comprises a plurality of spiral-wound membrane elements, a center pipe and a shell. The problems that once membranes are polluted, halt is needed for cleaning, pure water is used every day for cleaning the membrane elements in a back flushing mode, and the membrane elements need to be cleaned with acid and alkali regularly are solved. A hydrophobic cloth (9) is used as a carbon fiber hydrophobic cloth, a flat conductive contact is pulled out of the carbon fiber hydrophobic cloth, all conductive contacts are named according to arranging sequence numbers, the conductive contacts with odd sequence numbers are connected in parallel to form an electrode A, the conductive contacts with even sequence numbers are connected in parallel to form an electrode B, and the electrode A and the electrode B are led out of the shell (7) through the center pipe (6) to be connected with a polarity-adjustable power source.

Description

Technical field: [0001] The present invention relates to wound membrane modules. Background technique: [0002] The roll-type membrane module is the most widely used membrane application form in the market at present. Its main features are high packing density and easy operation. In most cases where membranes are used, the membranes are in the form of rolled membranes. Rolled membrane modules are mainly made of flat diaphragms. It includes components such as flat diaphragm, flow channel spacer, dialysate collection tube, and membrane housing. [0003] The rolled membrane element is a hydrophobic cloth sandwiched between two permeable membranes. The three sides are heat sealed to form a rectangular long envelope-shaped flat membrane. The unsealed opening is facing the hole of the central tube. can be collected into the central tube. The coiled membrane element is wound from a flat diaphragm and a channel spacer, called "single leaf". Most commercial roll-type membrane mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/10B01D65/02
CPCB01D63/10B01D65/02B01D2321/223
Inventor 廖忠烈罗意高亮娟
Owner 四川民生管业有限责任公司