A catalyst, its preparation method, and a treatment apparatus and method for cyanide-containing wastewater.

Abstract

This invention relates to a catalyst, its preparation method, and a treatment apparatus and method for cyanide-containing wastewater. The catalyst preparation steps include: mixing a source M, carbon materials, and a hard template agent, followed by drying to obtain a precursor; the precursor is then subjected to microwave pretreatment, pyrolysis, and acid washing to obtain the catalyst; the source M includes organometallic framework compounds containing M and / or organometallic complexes containing M; M includes any one or a combination of at least two of cobalt, iron, copper, or manganese; the hard template agent includes magnesium chloride, calcium carbonate, or silicon dioxide. The catalyst provided by this invention can achieve single-atom dispersion of M. When used in the treatment of cyanide-containing wastewater, it can synergistically work with anaerobic ammonia oxidation to achieve efficient denitrification, and the treatment method can form a closed loop of pollutant self-disposal through "waste-to-waste" treatment.

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