Hydrodynamic cavitation-ultrasonic cavitation-oxidation coupled process and device for cleaning and regeneration of activated carbon

Abstract

The invention discloses a hydrodynamic ultrasonic cavitation-ultrasonic cavitation-oxidation coupled process and device for cleaning and regeneration of activated carbon. The process comprises the following steps: putting waste activated carbon, an oxidizing agent and a pore-forming agent into water according to a mass ratio of 10: 1: 10 to form a mixed solution, and carrying out hydrodynamic cavitation and ultrasonic cavitation treatment on the mixed solution; The device comprises a stator, a rotor, a rotating shaft, an oxidant injection device and a waste activated carbon box, wherein the stator is a hollow sealed cylinder, a water inlet pipe and a liquid discharge pipe are respectively arranged on two sides of the stator, the stator is connected with the oxidant injection device on the same side of the water inlet pipe, ultrasonic transducers are distributed on the inner wall of the stator, the rotating shaft is installed in the stator, one end of the rotating shaft is connected with the power device, the rotor installed on the rotating shaft is arranged in the stator, blades are distributed on the rotor in a circumferential direction, Venturi holes are distributed in the blades, and the waste activated carbon box is connected to the water inlet pipe. The process and the method have the advantages of good effect, large treatment capacity, continuous operation, low cost and no secondary pollution, and have wide application prospects in the field of activated carbon cleaning and regeneration.

Description

technical field [0001] The invention relates to a process and a device for activated carbon cleaning and regeneration, and belongs to the technical field of activated carbon cleaning and regeneration. Background technique [0002] For the treatment of industrial wastewater, the most commonly used advanced water treatment process is activated carbon adsorption. The specific surface area of ​​ordinary activated carbon is 500-1700m 2 / g, it has good adsorption performance and is an industrial adsorbent with a wide range of uses. It has high physical and chemical adsorption performance for most common organic pollutants and heavy metal ions, and is widely used in sewage treatment. . [0003] However, due to the very complex composition of industrial wastewater, the surface of activated carbon often adheres to various dirt, which causes its surface to be coated with dirt and affects its adsorption performance. Therefore, the washing problem of activated carbon is becoming more ...

AI Technical Summary

Problems solved by technology

[0008] 1. High energy consumption and high cost;

[0009] 2. Incomplete cleaning of activated carbon;

[0010] 3. There is some damage to the activated carbon itself during the cleaning process;

[0011] 4. Low efficiency and long time required

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