Water treatment process of O3/H2O2/multiphase-fenton

Abstract

The invention relates to a water treatment method for an O3 / H2O2 / multiphase-Fenton combination, in particular to the water treatment method which can generate OH by a plurality of channels, which includes the following contents: the filtered water treated with the traditional water treatment technique is input into an ozone contact tower for ozone oxidation reaction; the water after ozone oxidation is added with hydrogen peroxide to react for a period of time; the yeilding water oxidized by O3 / H2O2 is input in a catalyst bed for staying for a period of time, the interior of the catalyst bed is stuffed with hydroxyl oxidize iron or carrier type hydroxyl oxidize iron; the water oxidized by O3 / H2O2 / multiphase-Fenton is sent into a biological activated carbon filtering bed for biological treatment; after the biological treatment, the water carries out chlorination disinfection and then enters a municipal network pipeline. The principle of the water treatment method of the O3 / H2O2 / multiphase-Fenton combination is as follows: after the O3 / H2O2 oxidation process, the residual H2O2 is taken as the H2O2 source for the following treatment technique, and the hydroxyl oxidize iron or the carrier type hydroxyl oxidize iron is introduced into the system to form an O3 / H2O2 / multiphase-Fenton system, thus generating the OH with strong oxidizability again.

Description

technical field [0001] The present invention relates to an O 3 / H 2 o 2 / Multiphase-Fenton combined water treatment method. In particular, it relates to a multi-channel generation of hydroxyl radicals to strengthen the removal of toxic and refractory organic pollutants in water. Background technique [0002] In the treatment of toxic and non-biodegradable organic pollutants in water, O 3 / H 2 o 2 The catalytic oxidation process has more prominent advantages: H 2 o 2 Trigger O 3 Decompose to produce strong oxidizing hydroxyl radicals (OH), which non-selectively oxidize organic pollutants in the water treatment process, and will not cause secondary pollution; O 3 / H 2 o 2 The process does not change the original O 3 The process, simple equipment, and convenient maintenance are the most extensive and effective advanced oxidation methods used in drinking water treatment to remove organic matter, and are suitable for large-scale water treatment applications. [0003]...

AI Technical Summary

Problems solved by technology

First, the removal rate of some extremely refractory organic matter in water is not high

Second, there is the problem of residual oxidants, especially by increasing the H 2 o 2 Dosage fortified O 3 / H 2 o 2 This problem is exacerbated by the way decontamination efficiency

residual H 2 o 2 Not only will it corrode equipment and pipelines, but also in the subsequent Cl 2 Cl is also consumed during the disinfection process 2 , resulting in the addition of Cl during the disinfection process 2 additional amount

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