Online detecting device and detecting method for integrity of hollow fiber membrane module

Abstract

The invention discloses an online detecting device and a detecting method for integrity of a hollow fiber membrane module. A shading shell is internally provided with a laser transmission system, an optical detection system, a laser receiving system and a display alarm system; the laser transmission system comprises a first laser transmitter and a second laser transmitter; the optical detection system comprises a first optical detector and a second optical detector; the laser receiving system comprises a first signal receiver and a second signal receiver; the display alarm system comprises an alarm and a display; the alarm comprises a third variable resistor and a fourth variable resistor; the fourth variable resistor is connected with an LED (Light Emitting Diode) and a buzzer in parallel; the display comprises a display screen. According to the online detecting device disclosed by the invention, a photovoltaic conversion technology is flexibly used by utilizing the characteristics of good laser directivity, high brightness, strong monochromaticity, high energy density and the like, and the online detecting device has the characteristics of low cost and high sensitivity.

Description

technical field [0001] The invention relates to a detection device and a detection method, more specifically, to an online detection device and a detection method for the integrity of a hollow fiber membrane module. Background technique [0002] Since the 1960s, the first industrial membrane of American Exxon Company was born, and membrane technology entered a period of rapid development. Although the development of membrane technology is not long, due to the unique advantages of membrane technology, it has been widely used in industry, such as in environmental protection, water treatment, chemical industry, metallurgy, energy, medicine, food, bionics and other fields. Membrane separation technology refers to the technology of separation, classification, purification, concentration and enrichment of liquid or gas mixed with two or more components through the permeation of specific membranes with the help of external energy. Membrane separation technology has the characteris...

AI Technical Summary

Problems solved by technology

[0006] The direct detection method is to directly test the membrane fiber or membrane module to directly determine the integrity of the membrane. The direct detection method includes pressure attenuation test, air diffusion flow test, vacuum attenuation test, etc. The method steps are relatively cumbersome, and human factors interfere greatly. It is destructive to the membrane module, it is not easy to realize in operation, and it is difficult to detect online

Indirect test methods mainly include turbidity detection, particle detection, spike integrity detection and microbial challenge test, etc., which are destructive detection with poor sensitivity and low resolution, and are usually used as auxiliary detection methods

Turbidity is a substitute parameter for particulate matter in water. It is a water quality indicator that indicates particulate matter in water. It is an important indicator in water treatment. It is used in almost all water treatment processes. Turbidity detection is cheap but has low sensitivity.

Images