JPS62140607A - Method for sterilely detecting leak of hollow yarn-type module - Google Patents

Abstract

PURPOSE:To directly detect a leak while a module is fitted in a liq. treating device by making the cap part of the hollow yarn-type module transparent, sending sterile air from the outside of the hollow yarn, and detecting the bubbles of leaking air through the transparent cap. CONSTITUTION:In the hollow yarn module incorporated in the device for treating a comparatively clear liq., the transparent cap 9 is provided on the end of the module. When a liq. is not treated, the pressure on the inside of the hollow yarn 1 is turned off, sterile air is sent to the outside of the hollow yarn from a sterile air supply source 8 provided to a permeated water pipeline 7 communicating with the outer space of the hollow yarn, and the pressure on the outside of the hollow yarn is kept higher than the pressure on the inside of the hollow yarn. The air emerging from the end of a leaking hollow yarn into the processing soln. as small bubbles can be seen from the outside through the transparent cap 9 and the processing soln., and leaks can be directly detected.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an internal pressure type hollow fiber module 51 (((2) relating to a method for detecting a free leak) which is incorporated into a processing apparatus for processing a liquid.

(Prior Art) Hollow fiber modules are widely used in industrial liquid processing, medical water production, ultrapure water production, and the like.

Various methods have been conventionally provided for detecting leaks in hollow fiber modules. For example, JP-A-55-
No. 70258 describes a method in which gas is pressurized from the outside of the hollow fiber, and the gas is discharged from the inside of the hollow fiber to the hollow fiber end to detect individual leak locations using black air columns. However, these are in the state where the hollow fiber type modicol is alone.

If a hollow-fiber module installed in a liquid treatment device begins to leak due to use, the occurrence of the leak can be detected by other means, such as a quality formula for the treated liquid, and the monoyl can then be removed from the device. I can't tell if it's a mono-jet leak or not when I do a thorough inspection.

Detecting the leakage of Mogicol based on the deterioration in the quality of the treated liquid wastes the treated liquid, and if the quality deterioration is small, low-quality radish will be produced for a long period of time.

Even if the hollow fiber module leaks during use, it is a big problem that there is no means to detect it.

In view of this situation, as a result of careful consideration by the present inventors,
The present invention has been completed.

(Structure of the Invention) That is, the present invention provides means for supplying sterile air to piping that communicates with the hollow fiber outer space of the module in a hollow fiber module incorporated in a processing device that processes relatively clear liquid. In addition, a transparent cap is installed on the module terminal to release the pressure inside the hollow fiber when liquid is not being processed, and to send sterile air to the outside of the hollow fiber, so that the outside of the hollow fiber is closer to the inside of the hollow fiber than the inside of the hollow fiber. Aseptic leak detection method for hollow fiber type monoyl, characterized by maintaining a high pressure state and detecting air leaking from the end of the hollow fiber with a leak through a transparent gear. It is.

The key point of the present invention is that the cap part of the hollow fiber type module is made transparent so that the end part of the hollow fiber can be seen from the outside through the cap and the processing liquid when it is attached to the processing equipment. Sends sterile air from the outside of the hollow fiber, without contaminating the outside of the hollow fiber with bacteria.
The leak can be directly detected because air can be seen exiting the processing liquid as small bubbles from the hollow fiber end corresponding to the leaked hollow fiber. This operation can be reliably performed within 3 minutes after stopping the equipment, so by performing this operation frequently (for example, once an hour), if a hollow fiber leak occurs, you can immediately replace the module. The generation of processing liquid with degraded quality can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention. 1... Hollow fiber 2... Case 3... Adhesive 4... Stock solution nozzle 5... Stock solution piping
6... Permeated water nozzle 7... Permeated water piping 8
... Sterile air supply nozzle 9 ... Transparent cap

Claims (1)

[Claims] In a hollow fiber module incorporated in a processing device that processes relatively clear liquid, a means for supplying sterile air is provided to the piping that communicates with the outer space of the hollow fiber of the module, and a transparent cap is provided at the module terminal. , when liquid is not being processed, the pressure inside the hollow fiber is released and sterile air is sent to the outside of the hollow fiber to maintain a state where the pressure on the outside of the hollow fiber is higher than the inside of the hollow fiber and eliminate leaky hollow fibers. A sterile leak detection method for a hollow fiber module, characterized by detecting air bubbles leaking from the terminal of the module through a transparent cap.