Hydrodynamic cavitation and electrocatalysis integrated antibiotic wastewater degradation device

Abstract

The invention provides a hydrodynamic cavitation and electrocatalysis integrated antibiotic wastewater degradation device which comprises a rotor and a stator, the stator is a hollow sealed cylinder,and an electrode is arranged on the inner wall of the stator; the rotor is arranged in the stator and is of a multi-layer cylinder structure, and annular cutting grooves are distributed in the surfaceof the rotor. The rotor is fixedly connected to the rotating shaft, the rotating shaft penetrates through the stator and the rotor in the stator, and the stator and the rotating shaft rotate synchronously. Cavitation holes are formed in the end faces of all layers of the rotor; and a water outlet pipe is arranged at the other end of the stator. According to the device, an annular-like multilayerreaction cavity is formed through the annular cutting grooves; the space is fully utilized to obtain higher cavitation intensity; an electrocatalysis process is coupled to form an integrated rotary hydrodynamic cavitation reactor, and hydrodynamic cavitation is combined with electrocatalysis to degrade antibiotics so that the number of required electrodes is reduced, cavitation and electrocatalysis are ensured to effectively act on antibiotic wastewater, the treatment effect is good, the treatment capacity is large, continuous operation can be realized, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to an integrated device for treating antibiotic wastewater by utilizing hydraulic cavitation combined with electrocatalysis, and belongs to the technical field of antibiotic wastewater treatment. Background technique [0002] At present, the methods of degrading antibiotics include physical adsorption, oxidation, electrocatalysis, photolysis, etc. Each method has its own advantages and disadvantages. [0003] The invention of CN110002549A provides a kind of SnO 2 -WO 3 A method for electrocatalytic degradation of antibiotics in water with nanographite anode. Impregnate an appropriate amount of nano-graphite into a mixed solution of stannous chloride, ammonium tungstate, and urea, and after aging and drying, the obtained solid is fully ground, and then calcined at high temperature to make SnO 2 -WO 3 / nanographite catalyst; SnO will be obtained 2 -WO 3 Graphite / nano-graphite catalysts were prepared into electrodes by hot pre...

AI Technical Summary

Problems solved by technology

However, the current hydraulic cavitation sewage treatment devices on the market basically use the structure of Venturi tube and cavitation nozzle to achieve the purpose of cavitation. The above structures all have the problems of small processing capacity, low efficiency, complex structure, and difficulty in large-scale, so they cannot be applied. in the actual sewage process

[0005] Although "A Liquid Phase Burner" disclosed by CN204240625U, "LIQUID HEATINGDEVICE" disclosed by RU 2310798C1 and "A Rotary Power Heater" disclosed by CN104613661A propose a rotary cavitator, they all belong to the simple cavitation occurrence The device does not explain the degradation function of antibiotic wastewater, nor is it coupled with other physical and chemical strengthening methods

No single method can degrade antibiotic wastewater more effectively and fully

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