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Membrane separation apparatus, membrane separation apparatus operation method, and evaluation method using the membrane separation apparatus

A membrane separation and separation membrane technology, which is applied in semi-permeable membrane separation, measuring devices, chemical instruments and methods, etc., can solve problems such as difficulty in distinguishing cleaning and replacement periods, and difficulty in fully grasping the state of membrane surfaces of operating modules.

Inactive Publication Date: 2013-06-26
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is difficult to fully grasp the membrane surface status of the operation module (especially the formation of biofilm on the membrane surface as a bacterial origin) by monitoring the membrane surface status in the auxiliary module.
That said, with auxiliary modules, it can be difficult to discern proper cleaning and replacement periods

Method used

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  • Membrane separation apparatus, membrane separation apparatus operation method, and evaluation method using the membrane separation apparatus
  • Membrane separation apparatus, membrane separation apparatus operation method, and evaluation method using the membrane separation apparatus
  • Membrane separation apparatus, membrane separation apparatus operation method, and evaluation method using the membrane separation apparatus

Examples

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Embodiment

[0060] In the example, as figure 1 Shown constitutes a membrane separation device. In this membrane separation device, a part (most part) of the feed water F is guided to the reverse osmosis membrane module (separation membrane module) 1 through the flow path, and separated into permeate water T by membrane separation. 1 and concentrated water C 1 . Another part (small part) of the feed water F is led to the auxiliary module 2 and separated into permeate water T by membrane separation 2 and concentrated water C 2 . In the flow path of the membrane separation device, a booster pump 6 for generating a flow of feed water F and a valve (supply pressure regulating valve) 5 for adjusting the flow (amount, pressure, etc.) of feed water F led to the auxiliary module 2 are provided.

[0061] The reverse osmosis membrane module 1 is a cross-flow filtration module, and is composed of seven ES20, which are spiral RO membrane elements, loaded in series in a pressure vessel. In additi...

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Abstract

In the present invention, contamination of a membrane surface of a separation membrane module is accurately ascertained by a sub-module. The membrane separation apparatus according to the present invention comprises a separation membrane module (1) that generates at least a transmission fluid from a supply fluid, and at least one sub-module (2) that has a separation membrane (23) constituted by the same material as that of the separation membrane of the separation membrane module (1). A deposition material (22) is provided on the surface of the separation membrane (23) of the sub-module (2) at the side where the supply fluid is supplied.

Description

technical field [0001] The present invention relates to a membrane separation device, an operation method of the device, and an evaluation method using the device. The membrane separation device has a separation membrane module (hereinafter sometimes referred to as an operation module) and a membrane surface evaluation (evaluation of the surface of the separation membrane) An auxiliary module for the separation membrane module using a separation membrane for obtaining at least a permeate fluid from a feed fluid. Background technique [0002] The membrane separation device has a separation membrane such as a reverse osmosis membrane or an ultrafiltration membrane, and can filter and separate various fluids such as gas or liquid through the membrane separation action of the separation membrane (membrane separation). For example, salt water or seawater can be desalinated and desalinated by a reverse osmosis membrane device, and pure water or ultrapure water can be produced usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/00B01D65/10
CPCB01D63/087B01D65/02B01D2313/20B01D65/10G01N17/008
Inventor 小林显太郎小西贵久小泓诚丸山幸治难波真季子
Owner NITTO DENKO CORP