Front surface fluorescent probe device for monitoring membrane pollution

Abstract

The invention provides a front surface fluorescent probe device for membrane pollution monitoring, which comprises a water-permeable light-shielding shell installed at the front end of a flat membrane, an optical fiber probe is installed at the top end of the water-permeable light-shielding shell, the bottom end of the optical fiber probe penetrates into the water-permeable light-shielding shell, and the included angle between the central axis of the optical fiber probe and the flat membrane is an acute angle. An input end at the top of the optical fiber probe is connected with an exciting light output end on the fluorospectro photometer, an output end at the top of the optical fiber probe is connected with an emitted light receiving end on the fluorospectro photometer, and a signal transmission end of the fluorospectro photometer is connected with the computer. According to the device, the angle and the distance between the optical fiber probe and the flat sheet membrane are controlled by arranging the water-permeable light-shielding shell, light beams are prevented from directly passing through the flat sheet membrane, the reflection, scattering and depolarization effects are minimized, the accuracy of a detection result is greatly improved, and the water-permeable light-shielding shell shields interference of other light rays; and the influence on the signal detection of the exciting light is avoided.

Description

technical field [0001] The invention relates to the technical field of membrane fouling characterization, in particular to a front surface fluorescence probe device used for membrane fouling monitoring. Background technique [0002] Ultrafiltration technology has been widely used in advanced treatment of drinking water, providing an effective guarantee for the biological safety of drinking water. However, during the ultrafiltration process, organic matter, particulate matter and microorganisms will accumulate on the membrane surface and form membrane fouling, which will increase the resistance of the membrane. Thereby increasing the operating energy consumption and increasing the process operation and maintenance costs. The membrane fouling problem in ultrafiltration water purification process seriously hinders the application and development of this technology. Fluorescent natural organic compounds can be quickly, sensitively, and online monitored by fluorescence spectrosc...

AI Technical Summary

Problems solved by technology

[0004] At present, the front surface three-dimensional fluorescence method has been widely used in the monitoring of food, medicine and other fields, and has achieved good characterization results. However, it has rarely been mentioned in the field of membrane fouling characterization, and it cannot be accurately characterized by using the front surface fluorescence method. Protein fluorescence, humic acid fluorescence and NADH fluorescence to judge membrane fouling

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