An ultrasonic / stirring / aeration synergistic enhanced device for treating high salinity PFAS wastewater

By using a synergistic enhancement device combining ultrasound, stirring, and aeration, the problems of high energy consumption and low efficiency in the treatment of high-salinity PFAS wastewater are solved, achieving efficient and low-energy PFAS degradation and defluorination.

CN224548129UActive Publication Date: 2026-07-24HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
Filing Date
2025-07-23
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies for treating high-salinity PFAS wastewater suffer from problems such as high energy consumption, numerous byproducts, excessive reagent usage, and complex equipment. In particular, the degradation efficiency is low in high-salinity environments, and low-frequency ultrasound alone results in insufficient cavitation bubbles and limited interfacial activity.

Method used

An ultrasonic/stirring/aeration synergistic enhancement device is adopted, which combines low-frequency ultrasound, mechanical stirring and aeration to form a shear stirring flow field and enhance the cavitation effect of microbubbles. The salting-out effect is used to promote the enrichment of PFAS at the gas-liquid interface, thereby achieving efficient degradation and defluorination.

Benefits of technology

It significantly improves the generation rate and mass transfer efficiency of interfacial active substances, enhances the reaction rate and defluorination efficiency of high-salt PFAS wastewater, has a compact structure that is easy to scale up, is suitable for treating high-concentration wastewater, and achieves low-energy-consumption treatment results.

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Abstract

An ultrasonic / stirring / aeration synergistic enhanced device for treating high-salinity PFAS wastewater relates to a device for treating high-salinity PFAS wastewater.The utility model is to solve the current method for treating high-salinity PFAS wastewater has the technical problem of poor effect, high energy consumption, by-product, more reagent and complex equipment.The utility model integrates low-frequency ultrasonic, mechanical stirring and aeration in the same reaction system, without additional addition of oxidizing agent.Compared with the traditional ultrasonic system, the device significantly improves the interface active substance generation rate and the mass transfer efficiency of PFAS;the device is suitable for high-salinity wastewater system, and salt ions promote PFAS enrichment on the gas-liquid interface through the "salting-out effect", significantly improving the reaction rate and defluorination efficiency;the overall device structure is compact, convenient for scale-up and engineering integration, and suitable for ion exchange resin adsorption regeneration liquid, RO concentrated water and other high-concentration PFAS wastewater treatment scenes.
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