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Method for operating separation membrane module

An operation method and separation membrane technology, applied in semipermeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve problems such as inability to remove turbid substances

Inactive Publication Date: 2011-02-16
ORGANO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this backwash only removes the turbid substances attached to the hollow line membrane surface of the hollow line type reverse osmosis membrane module, and cannot remove the turbid substances attached to the raw water separator of the spiral type reverse osmosis membrane module.

Method used

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  • Method for operating separation membrane module
  • Method for operating separation membrane module
  • Method for operating separation membrane module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (operating conditions)

[0060] As shown in the aforementioned second embodiment example, when the flow direction of the raw water is changed, flushing is performed three times alternately from two directions, and the first flushing is performed in a direction opposite to the flow direction of the raw water flowing so far. benchmark. That is, a cycle of raw water treatment for 8 hours→back flushing for 60 seconds→forward flushing for 60 seconds→backward flushing for 60 seconds was defined as a cycle, and this cycle was repeated. In addition, forward flushing refers to flushing performed in the same direction as the flow direction of raw water before performing back flushing.

[0061] Permeation treatment conditions: operating pressure is 0.75MPa, concentrated water flow rate is 2.7m 3 / hour, the water temperature is 25°C, and the raw water is pH 7.0.

[0062] Flushing conditions: open all valves c or d, and the flushing flow rate is 8.0m 3 / hour, the water tempera...

Embodiment 2

[0065] Example 3

Embodiment 3

[0067] Example 4

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PUM

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Abstract

The invention provides an operation method for a separation membrane component. The separation membrane component is provided with a spiral type thin film element which is composed of a sacculated separation membrane and a raw water separating piece which are winded onto the peripheral surface of a permeable water collecting pipe together, wherein, the flow direction of the raw water of the separation membrane component is regularly or aperiodically changed oppositely. Additionally, washing is carried out when the flow direction of the raw water is changed and the primary washing of each washing is carried out oppositely to the original flow direction of the raw water.

Description

[0001] This application is a divisional application of an application with a filing date of June 11, 2003, an application number of 03806884.2, and an invention title of "Separation Membrane Module and Operation Method of Separation Membrane Module". technical field [0002] The present invention relates to a separation membrane module for efficiently removing turbid substances accumulated on a raw water separator wound around a spiral membrane element and a method for operating the separation membrane module. Background technique [0003] In the prior art, as a method of obtaining seawater desalination, ultrapure water, and water for various manufacturing processes, spiral membrane elements using reverse osmosis membranes (RO membranes) or nanofiltration membranes (NF membranes) as permeable membranes are used. , methods for separating ionic components and low-molecular components from raw water are known. In addition, helical membrane elements are also used in the ultrafil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/02B01D63/10B01D65/02C02F1/44
CPCB01D65/02B01D2321/2083B01D63/10B01D2321/04B01D61/58C02F1/44B01D2321/40B01D2317/04B01D2313/18B01D2313/10B01D2313/12
Inventor 佐藤佑也
Owner ORGANO CORP