Membrane module and method for detecting deposits in a membrane module

Abstract

The invention relates to a device for detecting deposits in a membrane module producing permeate (P), said membrane module comprising at least one permeable or semi-permeable membrane layer (1), wherein, for the detection of At least one polymer optical fiber (3) is incorporated into the membrane assembly such that the polymer optical fiber (3) is in contact with the at least one film layer (1). The invention also relates to a method for detecting deposits in a membrane module producing permeate (P) and a membrane module for producing permeate from a feed stream (F) of a liquid, especially an aqueous solution, wherein The membrane module comprises a plurality of juxtaposed or stacked layers (a, b) composed of permeable or semipermeable membrane layers, and at least one polymer optical fiber (3 ), said polymer optical fiber (3) is in contact with at least one layer (a, b) of the film layer (1).

Description

technical field [0001] The invention relates to a membrane module having a device for detecting deposits and a method for detecting deposits in a membrane module producing permeate. Background technique [0002] In membrane separation technology, membrane modules are used for the separation of permeate and retentate from a liquid feed stream passing through the membrane module. The retentate is retained here by at least one permeable or semi-permeable membrane arranged in a membrane module, while the permeate passes through this membrane. This results in a separation of low-molecular and high-molecular material from one another in the feed stream, wherein the retentate contains the high-molecular components of the feed stream in concentrated form and is therefore also referred to as a concentrate. [0003] Membrane modules generally comprise multiple layers of permeable or semi-permeable membrane layers, wherein these layers can form, for example, flat membrane layers which...

AI Technical Summary

Problems solved by technology

As a result, membrane modules tend to tend to be over-cleaned, which on the one hand results in a high consumption of cleaning and rinsing solutions, and on the other hand has to endure long downtimes during the cleaning process, during which time the membrane modules cannot be used separation process

In addition, even if the membrane layer is cleaned regularly with cleaning solutions containing surfactants, there will still be growth of the membrane surface due to microorganisms (biofouling)

Biofouling can also lead to a decrease in the separation efficiency of membrane modules

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