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Advanced oxidation method

An advanced oxidation and ozone technology, applied in the field of oxidation, can solve the problems of unsafe environment and not the method of oxygen transfer, and achieve the effect of good safety performance

Inactive Publication Date: 2012-07-11
ZHENGJIANG MALIPURE ENVIRONMENTAL SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, this device is not an effective method of oxygen transfer, and second, this device can also bring dissolved ozone out of the water, making the environment unsafe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Example 1 Elimination of formaldehyde in water experiment (compared to ultraviolet light alone, compared to ozone alone)

[0069] Configure a formaldehyde solution with a concentration of 2.0mg / L as the experimental object, using such as figure 2 , image 3 The drag-type reverse gas transfer wheel shown is subjected to advanced oxidation according to the parameters shown in Table 11, and the treatment is for 30 minutes. The process is as follows:

[0070] (1) Air or oxygen is injected into the water through the tow-type reverse air transmission wheel to generate stable dissolved oxygen;

[0071] (2) Use the ultraviolet light generated by the ultraviolet lamp to convert the stable dissolved oxygen into dissolved ozone that will not be released to the air;

[0072] (3) Hydroxyl free radicals in water are generated by the action of dissolved ozone and ultraviolet light generated by ultraviolet lamps that are not released into the air again;

[0073] (4) Ozone free ra...

Embodiment 2

[0081] Example 2 Elimination of pesticides in water experiments (compared to UV alone, compared to ozone alone).

[0082] Method: use figure 2 , image 3 device shown. Using commonly used pesticides dimethoate, malathion, and dichlorvos in the market as the experimental objects, advanced oxidation was carried out according to the parameters shown in Table 13, and the treatment was carried out for 60 minutes. The process was as follows:

[0083] (1) Air or oxygen is injected into the water through the tow-type reverse air transmission wheel to generate stable dissolved oxygen;

[0084] (2) Use the ultraviolet light generated by the ultraviolet lamp to convert the stable dissolved oxygen into dissolved ozone that will not be released to the air;

[0085] (3) Hydroxyl free radicals in water are generated by the action of dissolved ozone and ultraviolet light generated by ultraviolet lamps that are not released into the air again;

[0086] (4) Ozone free radicals in water a...

Embodiment 3

[0093] Example 3 Bactericidal ability experiment: Elimination of bacteria in sewage (compared to ultraviolet light alone, compared to ozone alone)

[0094] Method: use figure 2 , image 3 The shown device adopts the biochemical treatment of domestic sewage to treat the discharge outlet water sample, in which the bacterial concentration is 10 5 ~10 6 cfu / ml, perform advanced oxidation according to the parameters shown in Table 15, and treat for 15 minutes, the process is as follows:

[0095] (1) Air or oxygen is injected into the water through the tow-type reverse air transmission wheel to generate stable dissolved oxygen;

[0096] (2) Use the ultraviolet light generated by the ultraviolet lamp to convert the stable dissolved oxygen into dissolved ozone that will not be released to the air;

[0097] (3) Hydroxyl free radicals in water are generated by the action of dissolved ozone and ultraviolet light generated by ultraviolet lamps that are not released into the air aga...

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Abstract

The invention belongs to the field of oxidation method, and especially provides an advanced oxidation method. The method comprises the steps that: (1) with a towing type reversed gas transmission wheel, air or oxygen is injected into water, such that stable dissolved oxygen is produced; (2) with ultraviolet rays generated by an ultraviolet lamp, the stable dissolved oxygen is converted into dissolved ozone that can not be released into air; (3) the dissolved ozone that cannot be released into air is subject to an effect of ultraviolet rays generated by the ultraviolet lamp, such that hydroxyl free radicals in water are produced; (4) the ozone free radicals in water and the hydroxyl free radicals in water act together, such that advanced oxidized purified water is obtained; (5) the advanced oxidized purified water is used for washing air, such that a purpose of air purification wetting is realized. According to the invention, dissolved ozone is directly produced by using dissolved oxygen in water, such that a safety property is good. Also, the ozone and hydroxyl free radical advanced oxidation method is combined with a capacity of the ultraviolet for directly damaging microbe DNA, such that a method for effectively killing microbes in water is further formed.

Description

technical field [0001] The invention belongs to the field of oxidation methods, in particular to an advanced oxidation method of ozone hydroxyl radicals. Background technique [0002] Ozone (O 3 ) plus ultraviolet light (UV) is an effective advanced oxidation method (Advanced oxidation method). Advanced oxidation methods are beginning to be applied to water and wastewater treatment. The advanced oxidation method generally requires an ozone machine to convert oxygen into gaseous ozone, and then through bubbling or gas-liquid flow mixing method ( figure 1 ) introduces gaseous ozone into water to form dissolved ozone. Hydroxyl radicals in water are generated by the action of dissolved ozone in water and ultraviolet rays (185nm) generated by ultraviolet lamps. Ozone radicals and hydroxyl radicals in water work together to form an advanced oxidation method for treating water and sewage. [0003] It is a more ideal advanced oxidation method to use the dissolved oxygen introdu...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/74C02F1/78C02F1/72C02F1/50B01D47/00
Inventor 惠觅宙
Owner ZHENGJIANG MALIPURE ENVIRONMENTAL SCI & TECH
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