Preparation method and applications of supported iron oxide catalyst carrier

Abstract

The present invention discloses a Fenton-like catalyst system, and relates to the technical field of sewage treatment. According to the present invention, specifically Fe2(SO4)3 is dissolved in water, the pH value is adjusted to an appropriate value so as to make the Fe2(SO4)3 solution generate Fe(OH)3, FeOOH and other iron oxide flocs, the floc-containing solution and basalt fibers are mixed according to a certain ratio, stirring is performed, the obtained material is placed into a drying oven, constant temperature heating is performed for a certain time to obtain basalt fibers supported on the catalyst, weaving and installation are performed to form a sewage treatment device, and H2O2 is added during the operating process to form a Fenton-like system so as to efficiently purify the sewage. The present invention further discloses a preparation method of a supported iron oxide catalyst carrier. Due to the large specific surface area of the basalt fibers, the iron oxide supported on the surface can supply the iron so as to reduce the iron salt adding and the sludge production, solve the contact problem of the catalyst and the reaction liquid, and improve the catalytic oxidation efficiency.

Description

technical field [0001] The invention relates to a preparation method of a loaded iron oxide catalyst carrier and a Fenton-like wastewater treatment system. Background technique [0002] The Fenton reaction can generate highly oxidizing hydroxyl radicals, which can quickly and non-selectively convert toxic or refractory organic pollutants into less toxic or easily biodegradable small molecule compounds, improve the biodegradability of wastewater, and even Complete mineralization of organic pollutants into environmentally friendly CO 2 and H 2 O. Due to the characteristics of simple operation, no need for complicated equipment, and environmental friendliness, the Fenton reaction is an advanced oxidation technology for efficiently treating high-concentration refractory organic wastewater. [0003] However, the ferrous ions in the traditional homogeneous Fenton system will form iron sludge during the treatment process, causing secondary pollution and increasing the treatment ...

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Problems solved by technology

[0003] However, the ferrous ions in the traditional homogeneous Fenton system will form iron sludge during the treatment process, which will cause secondary pollution and increase the treatment cost. Moreover, the reaction substrate is difficult to separate, which makes the catalyst unrecoverable and increases the cost of raw materials.

Although the adsorption performance of iron oxide is very good, it has a high affinity for organic matter, but because it is a loose, easily hydrolyzed, amorphous flocculation substance, and its dehydration performance is extremely poor, it will increase pollution. The volume of mud and the cost of treatment, choosing a suitable carrier to fix iron ions and form a Fenton-like reaction can improve these problems

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