Printing and dyeing wastewater treatment system and printing and dyeing wastewater treatment method

Abstract

The invention provides a printing and dyeing wastewater treatment system, which comprises a microwave photoelectric Fenton treatment unit and a magnetic separation unit, wherein the microwave photoelectric Fenton treatment unit and the magnetic separation unit are sequentially communicated through a pipeline, the microwave photoelectric Fenton treatment unit comprises a reaction container, a microwave generation device and an ultraviolet light generation device, the reaction container is provided with a solid inlet, a positive electrode and a negative electrode, the positive electrode and thenegative electrode are electrically connected with a voltage output device, the magnetic separation unit comprises a separation container and an electromagnet, the water inlet of the magnetic separation unit is communicated with the water outlet pipeline of the microwave photoelectric Fenton treatment unit, and the electromagnet is arranged in the separation container. The printing and dyeing wastewater treatment system disclosed by the invention treats printing and dyeing wastewater by combining the microwave and the magnetic charcoal photoelectric Fenton device, is high in degradation efficiency of organic matters in printing and dyeing wastewater, and can disperse magnetic biochar as a photoelectric Fenton reaction catalyst in water so as to separate and recover again, so that the costof the magnetic biochar is saved, and the influence on subsequent treatment is reduced.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a printing and dyeing wastewater treatment system and method. Background technique [0002] Printing and dyeing wastewater has the characteristics of complex components, poor biodegradability, high chroma, strong toxicity, and unstable pH. It is difficult to treat wastewater and is extremely harmful to the environment. [0003] In the existing technical scheme, biochar is prepared, and biochar is used as the active agent of hydrogen peroxide in the heterogeneous photo-Fenton reaction to cooperate with ultrasonic waves to treat the printing and dyeing wastewater, but the degradation efficiency of the pollutants in the printing and dyeing wastewater is relatively low. Low, and a large amount of hydrogen peroxide reagent needs to be added in addition during the reaction, which increases the processing cost. Contents of the invention [0004] The object of...

AI Technical Summary

Problems solved by technology

[0002] Printing and dyeing wastewater has the characteristics of complex components, poor biodegradability, high chroma, strong toxicity, and unstable pH. It is difficult to treat wastewater and is extremely harmful to the environment.

[0003] In the existing technical scheme, biochar is prepared, and biochar is used as the active agent of hydrogen peroxide in the heterogeneous photo-Fenton reaction to cooperate with ultrasonic waves to treat the printing and dyeing wastewater, but the degradation efficiency of the pollutants in the printing and dyeing wastewater is relatively low. Low, and a large amount of hydrogen peroxide reagent needs to be added in the reaction process, which increases the processing cost

Images