Novel Fenton fluidized bed and wastewater treatment method thereof

Abstract

The invention provides a novel Fenton fluidized bed and a wastewater treatment method thereof. The Fenton fluidized bed comprises an oxidation tower, a sieve plate, filler A, filler B, a Fenton oxidation zone, a ferric carbon reaction zone, a water inlet and distribution zone, a water outlet zone, a water outlet groove, a circulating device and necessary pipe fittings. The wastewater treatment method provided by the invention comprises the following steps: treating wastewater by adopting the Fenton fluidized bed, and distributing water by virtue of an annular perforated pipe and a bottom-layer sieve plate; reducing COD of the wastewater and persistent organic pollutants by carrying out Fenton reaction, then enabling the wastewater to enter the ferric carbon reaction zone, and further carrying out catalytic oxidation on the persistent organic pollutants in the wastewater under the ferric carbon microelectrolysis condition. The Fenton fluidized bed provided by the invention is optimized in structure, economic, reasonable and high in treatment efficiency.

Description

technical field [0001] The invention relates to a waste water treatment device and method, in particular to a novel Fenton fluidized bed and a method for treating waste water, belonging to the technical field of waste water treatment. Background technique [0002] The Fenton chemical oxidation method is the application of hydrogen peroxide (H 2 o 2 ) and ferrous ions (Fe 2+ ) reaction to generate hydroxyl radicals, and the reaction of oxidizing organic pollutants is an advanced oxidation treatment technology. The Fenton fluidized bed is a fluidized bed mode that allows most of the ferric iron produced by the Fenton method to crystallize or precipitate on the surface of the support in the fluidized bed. It is a combination of homogeneous chemical oxidation (Fenton method) ), heterogeneous chemical oxidation (H 2 o 2 / FeOOH), fluidized bed crystallization and reduction and dissolution of FeOH. This technology has greatly improved the traditional Fenton oxidation method, ...

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Problems solved by technology

In the above patent, the iron bed micro-electrolysis reaction device and the Fenton reaction device are set up separately, the process flow is complicated, the floor area is large, and the equipment is complicated

Chinese patents "Circulating variable-speed fluidized bed Fenton catalytic oxidation device" (204490649U), "A Fenton fluidized bed and its working method" (102774953A) and other Fenton fluidized bed devices have complex internal structures and low working efficiency

[0005] According to the existing literature, it can be seen that some Fenton fluidized beds have complex internal structures and low processing efficiency, and there are many equipment and large investment problems in the combined process of iron-carbon electrolytic bed and Fenton fluidized bed

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