Device for treating antibiotic wastewater by combining hydrodynamic cavitation with oxidation

Abstract

A device for treating antibiotic wastewater by combination of hydrodynamic cavitation and oxidation comprises a rotor, a stator and a center shaft; the stator is a closed cylinder, the rotor is a hollow cylinder, the rotor is arranged in the stator, and ball-column-shaped blind holes are distributed in the outer wall of the rotor; the center shaft is vertically mounted in the stator, penetrates through the stator and the rotor and is fixedly connected with the rotor, a wastewater inlet pipe is arranged at the upper part of the stator, and a wastewater outlet pipe is arranged at the bottom; andan oxidant adding pipe is arranged at the wastewater inlet pipe. Hydrogen peroxide is added into the antibiotic wastewater, the rotor rotates to cavitate the antibiotic wastewater, and the oxidant can degrade part of antibiotics, so that the removal efficiency is improved. The antibiotic wastewater is treated through combination of hydrodynamic cavitation and oxidation, the antibiotic removal rate is high, the effect is good, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to a device for treating antibiotic wastewater by using hydraulic cavitation and adding an oxidant, and belongs to the technical field of antibiotic wastewater treatment. Background technique [0002] Antibiotics are a class of metabolites produced by microorganisms or animals and plants that have anti-pathogen properties, and are organic substances that can interfere with cell growth. Antibiotics are widely used in fields such as medicine, animal husbandry and aquaculture, and have brought huge benefits. However, because antibiotic wastewater has a strong inhibitory effect on microorganisms, and the excessive use of antibiotics greatly threatens the ecological environment, antibiotic wastewater must be treated. [0003] Antibiotic wastewater is difficult to treat, has complex components and poor biodegradability, and has the following characteristics: (1) The volume and quality of antibiotic wastewater vary greatly, and because ...

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Problems solved by technology

Organically combine orifice plate hydraulic cavitation, Venturi tube cavitation and porous nozzle cavitation, but its structure is complex, the stability is poor, and the equipment cost and maintenance cost are high

[0006] The ultrasonic cavitation cooperative hydraulic cavitation sewage processor disclosed in CN103232127A uses ultrasonic transducers combined with Venturi tubes to treat sewage by ultrasonic cavitation, but its treatment efficiency is poor

CN110217957A discloses a hydraulic cavitation device for inactivated sludge degradation, which adopts a solid double-layer disk rotor, and the distribution between blind holes is distributed in concentric circles, and there is a problem of cavitation interference between cavitation blind holes

The cavitation structure it adopts is to generate cavitation bubbles through the shearing between through holes instead of blind holes. The cavitation phenomenon generated in the way of through holes is likely to cause interference of cavitation bubbles, thereby reducing its cavitation efficiency

[0009] CN104613661A proposes a rotary power rotary heater, whose mechanical structure adopts a spherical cavity to generate cavitation effect, and the overall mass of the device is large, and the energy consumption is high

The hydraulic cavitation device of the device is not clear, and the coupling method of hydraulic cavitation and ozone to enhance the desulfurization effect is not clearly stated

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