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Ultraviolet light ozone reaction process and device

A reaction device and ultraviolet light technology, which are applied in illumination water/sewage treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of poor treatment effect, slow reaction speed, and low utilization rate of ozone, etc. Achieve the effect of fast reaction speed, small diameter and high ozone utilization rate

Inactive Publication Date: 2012-09-19
东莞市珠江海咸水淡化研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of ultraviolet light ozone reaction process and its device that can overcome the shortcomings of low ozone utilization rate, slow reaction speed and poor treatment effect in the prior art in view of the deficiencies in the prior art

Method used

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  • Ultraviolet light ozone reaction process and device
  • Ultraviolet light ozone reaction process and device
  • Ultraviolet light ozone reaction process and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of ultraviolet light ozone reaction technology, it comprises the following method steps:

[0038] (a) Pretreatment: Wastewater is pretreated to remove suspended solids, turbidity and chroma;

[0039] (b) Gas-liquid mixing: The wastewater treated in step (a) passes through the nano-bubble pump and fully mixes with the ozone and air in the nano-bubble pump to generate countless microbubbles with a diameter of 10 microns to 50 microns, and the ozone is compressed in the in microbubbles;

[0040] (c) UV reaction: the wastewater treated in step (b) is catalyzed by UV light, ozone produces hydroxyl radicals [ OH], and the hydroxyl radicals [ OH] break the molecular chains of pollutants in the wastewater, polluting substances are gradually degraded;

[0041] (d) Activated carbon filtration: the residual ozone and pollutants in the wastewater treated in step (c) are adsorbed by activated carbon;

[0042] (e) Biological filter tower filtration: the water treated i...

Embodiment 2

[0045] Such as figure 1 Shown, a kind of ultraviolet light ozone reaction technology, it is made up of following method steps:

[0046] (a) Pretreatment: Wastewater is pretreated to remove suspended solids, turbidity and chroma;

[0047] (b) Gas-liquid mixing: The wastewater treated in step (a) passes through the nano-bubble pump and fully mixes with the ozone and air in the nano-bubble pump to generate countless microbubbles with a diameter of 10 microns to 50 microns, and the ozone is compressed in the in microbubbles;

[0048] (c) UV reaction: the wastewater treated in step (b) is catalyzed by UV light, ozone produces hydroxyl radicals [·OH], and the hydroxyl radicals [·OH] break the molecular chains of pollutants in the wastewater, and at the same time Ultrasonic waves are input to pressurize the microbubbles, and the pollutants are gradually degraded;

[0049] (c1) Gas-liquid separation of scum: Micro-bubbles gather and float in the scum gas-liquid separation tow...

Embodiment 3

[0060] Such as figure 2 Shown, a kind of ultraviolet light ozone reaction device for realizing the ultraviolet light ozone reaction process of embodiment 1, it comprises nano-bubble pump 1, ozone generator 2, UV reaction tower 3, active carbon reaction tower 4, biofiltration tower 5 , the ozone generator 2 is connected with the nano-bubble pump 1, and the waste water passes through the nano-bubble pump 1, the UV reaction tower 3, the activated carbon reaction tower 4 and the biological filter tower 5 in sequence. The solid line arrows in the figure represent the flow direction of water, and the dotted line arrows in the figure represent the flow direction of scum.

[0061] Nanobubble pump 1 is a gas-liquid high-speed mixing pump, and ozone generator 2 delivers ozone O 3 To nanobubble pump 1. Ozone O 3 It is fully mixed with air and pretreated wastewater in the nano-bubble pump 1 to form countless nano-scale micro-bubbles with a diameter of 10 microns to 50 microns, and ozo...

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Abstract

The invention belongs to the technical field of wastewater treatment and particularly relates to an ultraviolet light ozone reaction process and an ultraviolet light ozone reaction device. The ultraviolet light ozone reaction process comprises the following steps of: a) pretreating; b) mixing gas and liquid; c) performing ultraviolet (UV) reaction; d) filtering by using active carbon; e) filtering by using a biological filter tower; and f) discharging water. By using a nano gas bubble pump, the wastewater and ozone and air in the nano gas bubble pump can be fully nixed, and countless micro gas bubbles of which the diameters are 10 to 50 microns are generated; the micro gas bubbles are stable in performance and high in gas-liquid mixing ratio, and are not aggregated easily and fractured; the gas-liquid contact area of the device is hundreds of times that of the conventional aerator and the like, so that the reaction speed of the device is hundreds of times that of the conventional aerator and the like; and the residual ozone in the wastewater is filtered by the active carbon, and treatment of tail gas is eliminated. The process and the device are high in ozone utilization rate and good in treatment effect, the reaction speed is high, and the produced water is clear.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an ultraviolet light ozone reaction process and a device thereof. Background technique [0002] A large number of basic studies have found that under the action of ultraviolet light (UV), ozone (O 3 ) and hydrogen peroxide (H 2 o 2 ) can produce hydroxyl radicals [.OH], which can break the molecular chains of pollutants in wastewater, thereby realizing the degradation and decolorization of polluting organics in wastewater, and theoretically can degrade polluting organics all the way to CO 2 and H 2 O. For example, in printing and dyeing, leather, pharmaceutical, chemical and other wastewater treatment, it can quickly and significantly decolorize the wastewater, reduce the chemical oxygen demand (COD), and increase the biological oxygen demand (BOD). Therefore, it has great application potential in the pretreatment of wastewater before biochemistry o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/78C02F1/32C02F1/28
Inventor 袁伟光焦伟丽赵锐柏曾庆波
Owner 东莞市珠江海咸水淡化研究所
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