Heterogeneous Fenton reactor

Abstract

The invention discloses a heterogeneous Fenton reactor which is characterized in that in the reactor, a sewage tank is used for accommodating sewage to be treated; a disc is rotatably arranged in the sewage tank, at least one third of the disc is immersed in the sewage, a fixing support comprises n fixing rods which are arranged in a radial mode, each fixing rod comprises a first end located in the radial center and a second end opposite to the first end, the fan-shaped cage bodies are fixed between every two adjacent fixing rods, each fan-shaped cage body is of a net-shaped structure, the net-shaped structure is filled with an iron catalyst, and the mesh diameter of the net-shaped structure is smaller than the particle size of the iron catalyst; and a rotating shaft is erected on the sewage tank, the rotating shaft is connected with the radiation center, and the rotating shaft rotates to drive the disc to rotate. The heterogeneous Fenton reactor is large in effective contact area, high in liquid fluidity, free of catalyst loss, free of secondary pollution and low in cost.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a heterogeneous Fenton reactor. Background technique [0002] The Fenton reaction is one of the lowest cost advanced oxidation techniques. with Fe 2+ As a catalyst, by combining with H 2 o 2 Combination can oxidize and decompose organic matter, and finally degrade organic matter into CO 2 and H 2 O. [0003] For the traditional Fenton reaction, it can only show excellent degradation performance under acidic conditions, and it needs to constantly adjust the pH value of the wastewater, consuming a large amount of acid; at the same time, it is necessary to add excessive iron salts and hydrogen peroxide, the reaction There will still be a large amount of iron salts and iron sludge in the wastewater after the end, which is difficult to carry out follow-up treatment and easily causes secondary pollution of the water body. In order to reduce secondary pollution and iron ...

AI Technical Summary

Problems solved by technology

This type of reactor has disadvantages such as difficulty in catalyst recovery, easy sludge bulking, need to control pH, and generation of iron sludge.

When the heterogeneous Fenton reactor in the prior art is used in sewage treatment, there are disadvantages such as easy loss of catalyst, generation of sludge, degradation efficiency, and high treatment cost.

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