Free radical deep oxidization reactor

Abstract

The invention discloses a free radical advanced oxidation reactor, which comprises a reactor body, an ultraviolet lamp and an aeration device, wherein the reactor body is a closed vessel; a water inlet, a water outlet, a medicine feeding port, an ozone inlet and an end gas outlet which are communicated with the inside of the reactor body are arranged on the reactor body respectively; the ultraviolet lamp and the aeration device are both arranged inside the reactor body; the ultraviolet lamp adopts at least two groups of medium voltage fluorescent lamps with different wavelengths, and the aeration device is communicated with the ozone inlet on the reactor body. The reactor has the advantages of simple structure, strong capability of treating difficultly biodegraded organic matters, short reaction time, high reaction efficiency, wide application range, simple operation, stable outputted water quality, no secondary pollution, joint use with other water treatment methods, and the like. The reactor can be used as an advanced treatment reactor for a slightly polluted water body or a pretreatment reactor for a high-concentration organic polluted water body.

Description

technical field [0001] The present invention relates to a free radical deep reactor and the application technology of advanced wastewater treatment based on the reactor. A small molecule organic compound belongs to the field of water treatment and circular economy. Background technique [0002] Advanced oxidation technology (Advanced Oxidation Process, referred to as AOP) is defined as a technical process that can generate a large number of hydroxyl radicals, that is, to use various physical and chemical processes such as light, sound, electricity, and magnetism to generate a large number of free radicals, and then use the free radicals to The technical process of degrading organic matter in wastewater by strong oxidation characteristics. [0003] In the prior art, there are many processes for combining ozone and ultraviolet light, but they are mainly divided into two categories. One is an irradiation reactor with an ultraviolet lamp (high pressure or low pressure mercury l...

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Problems solved by technology

[0003] In the prior art, there are many processes for combining ozone and ultraviolet light, but they are mainly divided into two categories. One is an irradiation reactor with an ultraviolet lamp (high pressure or low pressure mercury lamp) on the upper part of the reactor. Because the ultraviolet lamp (high-pressure or low-pressure mercury lamp) is not inside the aqueous solution, it loses more light quanta, the irradiation is uneven, the utilization rate of light quanta is low, and the reaction efficiency is low; when the light transmittance of the reaction solution is not high, the bottom of the solution The second type is the submerged ultraviolet lamp reactor. Although the use of this type of reactor solves the shortcomings of some ultraviolet lamp irradiation reactors, the ultraviolet light wavelength used in many reaction devices is single and the power is small. And during the reaction process, it is easy to make the crystal sleeve outside the ultraviolet light adhere to scale, which seriously affects the light transmittance of the ultraviolet light, and then affects the reaction efficiency.

[0004] Because ozone has a strong oxidation property, in order to solve the problem of anti-oxidation, the aeration system in the prior art basically uses ceramic aeration heads. The aeration of ceramic aeration heads is uneven and the gaps are large. Stomatal outlet, so that the dissolution efficiency of ozone is low

[0005] In order to increase the dosage of ozone, the common practice in the prior art is to increase the intake of pure oxygen, but in fact, it is only effective to increase the intake of pure oxygen within a certain range. Excessively high intake of pure oxygen amount, the ozone generator cannot convert pure oxygen into high-concentration ozone in time, but reduces the partial pressure of ozone, which is also not conducive to the dissolution and reaction of ozone, and enters the misunderstanding of high dosage and poor reaction effect

At present, there is no free radical deep oxidation reactor that reasonably combines ozone and ultraviolet light and treats wastewater by cooperating with high pH water environment.

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