Method for preparing active carbon supported ferriferous oxide catalyst and wastewater treatment system thereof

Abstract

The invention discloses a method for preparing an activated carbon supported iron oxide catalyst, as well as a wastewater treatment system thereof, which relates to a wastewater treatment technique, in particular to a method for treating refractory toxic organic pollutants in wastewater. The activated carbon supported iron oxide catalyst is a catalyst which is low in price and can be reclaimed. The catalyst can be combined with other techniques so as to be applied to wastewater treatment under mild conditions, wherein the catalyst is combined with ozone so as to form a catalytic ozonation technique and is combined with hydrogen peroxide so as to form a heterogeneous phase Fenton technique; the heterogeneous phase Fenton technique is combined with ultrasound so as to form an ultrasonic synergistic heterogeneous phase Fenton technique; the techniques have good effect of removing refractory wastewater; and a solid phase catalyst is easy to separate, can not introduce new impurities, and allow effluent to be easy to reach the standard. The method has the advantages of simple technological process, low cost and good prospects in actual application.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a preparation method of an activated carbon-supported iron oxide catalyst and a wastewater treatment system thereof, in particular to a catalyst for treating refractory toxic organic pollutants in wastewater. Background technique [0002] Due to the stability of its chemical structure, the toxic organic pollutants in wastewater are highly toxic and difficult to treat; it is difficult to achieve satisfactory treatment by applying conventional treatment technologies, such as physical and chemical methods, chemical methods, biochemical methods and their combinations. However, there is still a lack of economical and effective practical technology. [0003] The advanced oxidation technology using heterogeneous catalyst is to use the highly active hydroxyl generated in the catalytic reaction to oxidize and decompose the organic pollutants in the water body, and promote the oxidation...

AI Technical Summary

Problems solved by technology

Due to the harsh reaction conditions (high temperature and high pressure) of the catalytic wet oxidation method, the noble metals used in it limit its application due to the high price; while the photocatalytic oxidation method uses a semiconductor material catalyst, its catalytic activity under visible light and the high efficiency of the photoreactor. The development still needs to be further improved, which also limits its application range