Ozone catalytic oxidation stirring reactor and sewage treatment method

A technology of ozone catalytic oxidation and stirred reactor, which is applied in the direction of oxidized water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc. It can solve the problems of high cost of catalytic membrane components, complicated process flow, difficult maintenance and operation, etc. , to achieve the effects of prolonging the contact reaction time, high reaction efficiency, and reducing process energy consumption

Pending Publication Date: 2018-09-21
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process flow of the reaction device is relatively complicated, the quartz sand in the multi-media filter needs to consume more backwash water, the cost of the catalytic membrane module is high, and the sealing problem at high temperature has been to be further solved
Compared with the columnar ozone reactor, the reactor has the disadvantages of large footprint, difficult maintenance and operation, etc.

Method used

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  • Ozone catalytic oxidation stirring reactor and sewage treatment method
  • Ozone catalytic oxidation stirring reactor and sewage treatment method
  • Ozone catalytic oxidation stirring reactor and sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A new, high-efficiency ozone catalytic oxidation stirred reactor, the ozone reactor is divided into two stages from bottom to top:

[0057] The first-stage reaction zone includes an aeration device and a draft tube;

[0058] The second-stage reaction zone includes a supporting layer, a catalytic packing and a stirring device;

[0059] Wherein, the ozone produced by the ozone generator (1) is carried out in the ozone catalytic oxidation stirred reactor (4) after the gas flow meter (2) adjusts the gas velocity;

[0060] In the first-stage reaction zone, the aeration device (3) is located at the bottom of the ozone reactor, preferably a micro-bubble aeration device, and the bottom of the ozone reactor adopts the aeration device (3) to aerate, and the organic chemical wastewater passes through the flow pump ( 5) Enter the reactor (4) with the valve (6), where the gas and liquid are pre-mixed, and then fully mixed and internally circulated through the guide tube (7), prolon...

Embodiment 2

[0065] Taking the electronics industry wastewater as an example (this type of wastewater contains a large amount of inorganic and organic pollutants, such as brominated flame retardant tetrabromobisphenol A), after water quality analysis, the water quality conditions in the actual wastewater are pH 2.5-4, COD 385mg / L, TOC 125mg / L, TBBPA1mg / L, acute toxicity 45TU, chronic toxicity 87TU, use the traditional columnar ozone reactor and the reactor of the present invention to treat this type of industrial wastewater.

[0066] Adopt the device of embodiment 1 to carry out wastewater treatment, wherein, the dosage of ozone is 4mg / L, wastewater pH is 3.0, temperature is 30 ℃, and reaction time is 1h,

[0067] The ozone generated by the ozone generator enters the reactor through the gas flow meter. A microbubble aeration device is installed at the bottom of the reactor. The microbubble aeration is started at the beginning of the reaction. The effective contact area between ozone bubbl...

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Abstract

The invention belongs to the field of organic chemical wastewater treatment, and in particular relates to a novel high-efficiency ozone catalytic oxidation stirring reactor which is obtained by reforming the traditional ozone reactor and is used for treating chemical wastewater. By reforming the internal structure of the ozone reactor (such as arranging a guide cylinder and additionally arranginga stirring device), the ozone residence time is prolonged; furthermore, ozone is combined with a catalytic packing loaded with activated carbon and nano-iron (a mixture of nano zero-valent iron and nano iron oxide) for use, so that the ozone utilization rate is improved, and the process energy consumption and the treatment cost are reduced.

Description

technical field [0001] The technology belongs to the field of organic chemical wastewater treatment, and specifically relates to the transformation of a traditional ozone reactor to obtain a new, high-efficiency ozone catalytic oxidation stirred reactor and a sewage treatment method for treating chemical wastewater. Background technique [0002] With the development of our country's economy, the organic chemical industry has become an important pillar industry in our country. In the process of mass production of chemical products, a large amount of wastewater will be produced at the same time. In addition to conventional inorganic compounds, heavy metals and other pollutants, these wastewaters often contain characteristic organic pollutants with high toxicity, teratogenicity, carcinogenicity, and mutagenicity. Such as polychlorinated biphenyls, polycyclic aromatic hydrocarbons, phenolic compounds, brominated flame retardants, dyes, etc. Therefore, wastewater has the characte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F1/72C02F101/30
CPCC02F1/725C02F1/78C02F2201/782C02F2101/30
Inventor 王宏杰董文艺韩琦李函博
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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