Cyanide particle removal electrode and preparation method and method and apparatus for treating high-concentration cyanide-containing wastewater

Abstract

The invention relates to a cyanide particle removal electrode suitable for treating high-concentration cyanide-containing wastewater and removing cyanide completely and a preparation method and a method and apparatus for treating high-concentration cyanide-containing wastewater. The cyanide particle removal electrode consists of a foam metal, a metal salt and a binder. The method for treating high-concentration cyanide-containing wastewater can perform cyanide breaking treatment on cyanide-containing wastewater with a cyanide ion concentration of 2000-3000 mg / L. The treatment apparatus comprises an ozone-three-dimensional electrolysis main reactor. The main reactor can treat the high-concentration cyanide-containing wastewater to reach the standard in a short period of time. The cyanide particle removal electrode has excellent electrochemical performance, the preparation method is simple and can be mass-produced, a space utilization rate is high, the cyanide particle removal electrodeis filled between cathode and anode plates of conventional two-dimensional electrolysis to form a third electrode, and thereby the cyanide ion removal apparatus with light weight, small land occupation area, high efficiency and low energy consumption is constructed.

Description

technical field [0001] The invention relates to the treatment of high-concentration cyanide-containing wastewater, in particular to a particle electrode used in the treatment, a preparation method thereof and a treatment device used in the treatment. Background technique [0002] Cyanide plating is one of the commonly used plating types, mainly used for zinc plating, lead plating, copper plating, silver plating, and gold plating. In addition to the highly toxic free cyanide in this type of cyanide-containing wastewater, complex ions such as copper cyanide, chromium cyanide, and silver cyanide exist, and the cyanide concentration is relatively high. In addition, cyanide is a highly toxic substance. Cyanide will combine with ferricytochrome in organisms to generate cyanide ferricytochrome oxidase and lose the function of transferring oxygen, causing tissue hypoxia in animals, so the discharge of cyanide-containing wastewater It will directly threaten the safety of the surroun...

AI Technical Summary

Problems solved by technology

The performance of the three-dimensional particle electrode determines the processing efficiency of the three-dimensional electrolysis. At present, there is a short-flow phenomenon in the application (because the particle electrodes are too close and the entire electrode is in a static state, the particle electrode filled between the anode and the cathode The overall resistance is too small, resulting in very weak micro-electric fields formed by these particle electrodes, which cannot oxidize the wastewater) and low current efficiency affect the treatment effect

This method does not increase other pollutants in the whole process, has no secondary pollution, and has a small amount of sludge, but it has the disadvantage of high electricity costs. In addition, the use of ozone alone cannot completely oxidize cyanide

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