Switchable three-electrode reactor used for treating suspended matters and persistent organic pollutants

Abstract

The invention discloses a switchable three-electrode reactor used for treating suspended matters and persistent organic pollutants. The switchable three-electrode reactor comprises an organic glass container and a stirring device. A sidewall of the organic glass container is embedded with a graphite-carbon black mixed air diffusion cathode, and a diffusing side of the graphite-carbon black mixed air diffusion cathode faces to the outer side of the organic glass container. A titanium-based composite metal electrode and an iron plate parallel to the graphite-carbon black mixed air diffusion cathode are arranged in the organic glass container. The titanium-based composite metal electrode is connected with the graphite-carbon black mixed air diffusion cathode or the iron plate through a constant current stabilized voltage supply. The switchable three-electrode reactor has the advantages that the titanium-based composite metal electrode acts as a counter electrode, through an electric flocculation technology or an electro-Fenton technology, treatment of different types of polluted water in the same reactor is realized, through circuit switching, high-efficiency and low-energy-consumption treatment of the compound polluted water is realized, and treating speed can be adjusted by adjusting the intensity of supply current.

Description

Technical field [0001] The present invention relates to the field of electrochemical technology, in particular to a switchable three-electrode reactor capable of combining electro-flocculation technology and electro-Fenton technology, and a construction method thereof, as well as in the treatment of rich suspended pollutants and refractory organic pollutants. The application of water bodies (taking algal bloom sewage as an example). Background technique [0002] Water is the material basis for the development of economic and chemical society. my country has abundant water resources, but the per capita possession is small. my country is a country with severe water shortage. In recent years, with the rapid economic development and the rapid increase of population, the eutrophication of water bodies has become increasingly serious, and cyanobacteria blooms frequently occur. In addition to the color and peculiar smell of water polluted by cyanobacteria blooms, drinking water sources...

AI Technical Summary

Problems solved by technology

[0004] However, the electric flocculation process may cause damage to the cyanobacteria cells due to the stimulation of the current, releasing intracellular substances, especially a large amount of microcystin, which seriously threatens the safety of water quality.

At the same time, the cyanobacteria cells that enter the bottom mud with the flocs, due to the change of the living environment and the impact on them during the treatment and disposal of the bottom mud, may cause cell damage and death decomposition of the algae cells, releasing a large amount of algae cells. Toxins, causing secondary pollution, affecting water quality and safety

At the same time, the electrocoagulation method cannot effectively remove the algae toxins already present in the water

Therefore, the pure application of electroflocculation technology cannot completely treat the water polluted by algae blooms.

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