Catalyst, device and method for catalytic reduction treatment of aerospace propellant production sewage

Abstract

The invention discloses a catalyst, device and method for catalytic reduction treatment of aerospace propellant production sewage, the catalyst comprises an iron base material with an oxidation film removed from the surface and metal copper particles deposited on the surface of the iron base material based on chemical plating, and the iron base material and the metal copper particles on the surface of the iron base material are subjected to surface modification and are partially in an oxidation state. The device comprises a filter bed reactor, a catalyst filled in the filter bed reactor, a water pump for lifting sewage to the filter bed reactor, and a circulating water pump for circularly lifting the sewage in the filter bed reactor. According to the method, the aerospace propellant production sewage is subjected to reduction treatment by using the device. The iron-copper composite catalytic reduction system is formed through chemical plating and oxidation modification, the contact area is large, the adhesive force is high, the copper consumption is small, equipment is simple, operation and management are convenient, other energy consumption is avoided except for power consumption of a water pump, the catalytic activity is higher, the reduction reaction rate is high, and secondary pollution is avoided; the method is very suitable for treatment of aerospace propellant production sewage.

Description

Catalyst, device and method for catalytic reduction treatment of waste water from aerospace propellant production technical field The present invention relates to the technical field of sewage treatment, be specifically related to the catalytic reduction treatment of aerospace propellant production sewage Chemical agent, device and method. Background technique Aerospace propellant production sewage belongs to a kind of refractory industrial sewage, and its composition is complex, contains a large amount of toxic and harmful Pollutants and biochemical degradation are difficult, and the sewage contains unbalanced dimethylhydrazine, partial hydrazone, dimethylamine, nitrosodimethylamine, tetramethyltetrazolium A series of organic substances such as alkene, most of which are highly toxic substances, and have teratogenic, carcinogenic, mutagenic and other effects. The ecological environment and personnel health and safety have a huge impact. Due to the poor biodegradabil...

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Problems solved by technology

However, the raw materials used in the study are all reduced iron powders with very fine particle size, which generally need to be pickled to remove oxides before use, and iron oxides or hydroxides are easily formed during use and passivation occurs, which is easy to block the reactor, so Good for engineering application

Moreover, some studies use expensive precious metals, which makes the processing cost increase sharply

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