Composite rotating disk liquid film reactor and method for processing organic wastewater

Abstract

The invention relates to a composite rotating disk liquid film reactor and a method for processing organic wastewater in the technical field of chemical industry. The composite rotating disk liquid film reactor comprises a speed regulator, a motor, a composite rotating disk, a reaction pool and a light source, wherein the speed regulator is connected with the motor to carry out speed regulation; the center of the composite rotating disk is fixedly arranged at the output end of the motor; the composite rotating disk is positioned in the reaction pool and is in contact with the liquid to be detected in the reaction pool; the lower half part of the composite rotating disk is soaked in a solution of the reaction pool, and the upper half part is arranged in the air; and the light source is horizontally arranged at one side of a titanium dioxide anode and is at the same height with an axle center of the composite rotating disk. A TiO2 light anode is illuminated by an excitation light source so that excitation light is illuminated on the surface of TiO2 catalyst by a wastewater liquid film; by sampling analysis after standing for 0.5-2 hours, the moving rate of an organic matter in the wastewater is detected, and the processing of the organic wastewater is finished. The invention compounds a cathode and an anode of a double-rotating disk into a whole when improving the photocatalysis efficiency and reducing the energy consumption, covers a metal substrate with cathode copper and blocks the direct contact between the metal substrate and the wastewater.

Description

technical field [0001] The invention relates to a reactor in the technical field of chemical industry and a method for treating wastewater thereof, in particular to a compound rotary disk liquid film reactor and a method for treating organic wastewater. Background technique [0002] In recent years, TiO 2 It has been proven to be a highly efficient, stable, non-selective and readily available semiconductor photocatalyst. TiO 2 As an advanced oxidation technology, photocatalytic technology can almost completely mineralize air and water pollutants without secondary pollution, and the reaction conditions are mild. It has become an attractive method for organic pollution treatment. Since Fujishima discovered TiO in 1972 2 Since the photocatalytic splitting of water, TiO 2 Semiconductor photocatalysis technology has gradually been extensively studied in the treatment of organic matter. To solve TiO 2 Difficult to separate from wastewater, TiO 2 are immobilized on various s...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the cathode in the device is static, and the photogenerated electrons are still transferred by the anode bias, and the electrons are not effectively utilized after being transferred to the cathode, and do not contribute to the treatment of wastewater.

However, the structure of the double rotating disk of the reactor is relatively complicated. The anode base made of titanium has good stability but high cost, and the cost of the anode base made of stainless steel is low, but it is easily corroded under the optimal reaction conditions, namely acidic conditions.

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