Hydrodynamic ultrasonic cavitation and advanced oxidation coupled degradation device for sulfide wastewater

Abstract

The invention discloses a hydrodynamic ultrasonic cavitation and advanced oxidation coupled degradation device for sulfide wastewater. The device comprises a stator, a rotor, a rotating shaft and an ultrasonic transducer, the stator is a sealed cylinder, the ultrasonic transducer is installed on the inner wall of the stator, a liquid inlet and a liquid outlet are formed in the two sides of the stator respectively, an oxidizing agent injection device is arranged on one side of the liquid inlet, the rotating shaft is installed in the stator, one end of the rotating shaft extends out, the rotor is located in the stator and fixedly installed on the rotating shaft, blades are distributed on the circumference of the rotor, cavities are formed in the blades, and through holes are distributed in the two sides of each cavity. Sulfide wastewater is conveyed into the stator after being precipitated, an oxidizing agent is conveyed into the stator through the oxidizing agent conveying pipe and mixed with the wastewater, treatment is conducted through the cavitation technology, and degradation of organic matter is achieved. According to the device, hydrodynamic cavitation, ultrasonic cavitation and an advanced oxidation technology are combined to synergistically degrade the sulfide wastewater, the treatment efficiency is high, the treatment effect is good, and continuous operation can be realized.

Description

technical field [0001] The invention relates to a sulfide wastewater degradation device by coupling hydraulic cavitation, ultrasonic cavitation and advanced oxidation, and belongs to the technical field of wastewater pollutant degradation. Background technique [0002] Sulfides are pollutants, and their content is an important evaluation criterion for water quality, mainly from the processing and use of fossil fuels. Their acidity poses a serious threat to the entire ecosystem, causing corrosion of metals and concrete elements and a large consumption of water and oxygen. In addition, wastewater containing trace sulfides will poison the catalyst, resulting in the inability of the catalytic reaction to proceed normally. Sulfide-rich industrial wastewater must be treated before being discharged into the environment. At present, the treatment methods of sulfur-containing wastewater mainly include physical method, chemical method and biological method. [0003] Among them, the ...

AI Technical Summary

Problems solved by technology

Among the three methods, the physical method is the simplest. The chemical method consumes a lot of chemicals and produces a large amount of waste residue when the sulfur content in the wastewater is high, so it is not suitable for treating wastewater with a high sulfur content; the biological method uses microorganisms to oxidize sulfide In addition, due to the limitation of microbial tolerance, the efficiency of treating wastewater with high sulfur content is low, so it is not suitable for treating wastewater with high sulfur content

However, the hydraulic cavitation device is not clear, nor does it clearly explain the coupling method of hydraulic cavitation and ozone to enhance the desulfurization effect

[0007] In addition, "A Shearing Cavitation Device" disclosed in CN207468248U, "FLUID HEATER" disclosed in WO2012077889A1, and "A Powered Rotary Heater" disclosed in CN104613661A propose a rotary cavitator, but both It is a simple cavitation generating device, without the degradation function of sulfide wastewater, and it is not coupled with other physical and chemical strengthening methods

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