Electroacoustic multivariant catalytic oxidation device and method for treating wastewater by using same

Abstract

The invention discloses an electroacoustic multivariant catalytic oxidation device and a method for treating wastewater by using the same. The electroacoustic multivariant catalytic oxidation device comprises a water inlet pipe, an integrated reactor and a water outlet pipe, wherein the integrated reactor adopts a cuboid structure; one end of the integrated reactor is connected with the water inlet pipe, and the other end of the integrated reactor is connected with the water outlet pipe; the integrated reactor is divided into an ultrasonic reaction zone and an electrocatalytic oxidation zone; the ultrasonic reaction zone is positioned at the upstream of the electrocatalytic oxidation zone. Compared with the prior art, the invention has the beneficial effects as follows: the electroacoustic multivariant catalytic oxidation device couples two advanced oxidation technologies; after electrification, wastewater flows in from the water inlet pipe of the electroacoustic multivariant catalytic oxidation device and first runs through the ultrasonic reaction zone, and pollutants in the wastewater are degraded under the action of ultrasonic; then, the wastewater enters the electrocatalytic oxidation zone and runs through each pole plate in a pushing-flow mode, organic matters in the wastewater are oxidized and degraded under the action of current, and treated effluent water is discharged from the water outlet pipe; chemicals are not required to be added; the electroacoustic multivariant catalytic oxidation device can efficiently treat various organic contaminant-containing industrial wastewater, and is easy and convenient to operate and stable in operation.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and relates to an acoustic-electric multi-component catalytic oxidation device and a method for treating wastewater. Background technique [0002] At present, the treatment of wastewater containing toxic and harmful biological refractory pollutants has always been a technical difficulty in the field of environmental engineering, and the treatment methods in industrial practice are also very limited. Advanced oxidation technologies, such as ozone oxidation, Fenton oxidation, wet oxidation, electrocatalytic oxidation, supercritical oxidation, etc., can reduce chemical oxygen demand (COD), detoxify harmful substances, and improve the biodegradability of wastewater. Therefore, it is often used in the actual wastewater treatment process. Among the above treatment technologies, the ozone oxidation technology has limited treatment effect, and the ozone utilization rate is not high; Fenton oxidant co...

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Problems solved by technology

[0006] (1) The aqueous solution of 2-chlorophenol is used as the treatment object, which has limited reference significance for the industrial treatment of actual wastewater; (2) The solid plate is used and the number is limited, which limits the contact area between the wastewater and its active surface. The processing device cannot be directly extended to the continuous operation of the actual production site; (3) The ultrasonic propagation distance is limited, and the device is not conducive to industrial scale expansion and application promotion

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