Ozone oxidation reactor and using method thereof

An ozone oxidation and reactor technology, which is applied in the field of chemical engineering, can solve the problems of limited efficiency and high power consumption of gas-water distribution devices, and achieve the effects of improving ozone utilization, high reaction speed, and improving gas-liquid mass transfer speed.

Pending Publication Date: 2020-06-02
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the power consumption of ozone production is still high, about 20-35 degrees per kilogram of ozone, and it is necessary to continue to improve production and reduce power consumption
At the same time, the efficiency of the existing gas-water distribution device is limited, and it is necessary to strengthen the research on the gas-water contact mode and contact equipment to improve the utilization rate of ozone

Method used

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  • Ozone oxidation reactor and using method thereof
  • Ozone oxidation reactor and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The biochemical effluent of a chemical plant uses the above-mentioned reactor for advanced treatment in a small test. The treatment capacity is 24L / h, the temperature is 25°C, and the COD of raw water is 100-150 mg / L.

[0050] Ozone enters the gas cavity 1011 of the ultra-fine bubble distributor 101 through the gas inlet 103, and then enters the gas-liquid channel 1012 through the gas hole, and is transported by the high-speed liquid flow (flow rate greater than or equal to 1m) from the mixer 109 / s) cutting and dispersing into ultrafine bubbles, thereby forming an ultrafine bubble flow, the ultrafine bubble flow enters the bottom of the tower reactor 1 downward along the gas-liquid channel 1012, and is transported through the liquid inlet 103 The waste water and the catalyst at the bottom of the tower reactor 1 flow upward together. After the reaction, gas-liquid separation is performed at the upper part of the tower reactor 1. The gas is discharged through the gas outl...

Embodiment 2

[0053] The effluent of a coking wastewater mixed sedimentation tank is treated by the above-mentioned reactor, the treatment capacity is 20L / h, the temperature is 25°C, and the raw water COD is 136 mg / L. Ozone oxidation treatment is used in the ultra-fine bubble reaction, the residence time is 30min, the ozone concentration at the outlet of the ozone generator is about 100mg / L, the gas flow rate is 20L / h, and the COD of the effluent is less than 80mg / L.

Embodiment 3

[0055] The biochemical effluent of pesticide wastewater is treated with the above-mentioned reactor for advanced treatment small-scale test, the treatment capacity is 30L / h, and the COD of raw water is 200-300 mg / L. Ozone oxidation treatment is used in the ultra-fine bubble reaction, the residence time is 30min, the ozone concentration at the outlet of the ozone generator is about 100mg / L, the gas flow rate is 30L / h, and the COD of the effluent is less than 60mg / L.

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Abstract

The invention discloses an ozone oxidation reactor, which comprises a mixer, a gas phase balance pipe, a tower type reactor and an ultrafine bubble distributor at the lower portion in the tower type reactor, wherein the ultrafine bubble distributor comprises a gas cavity communicated with a gas inlet and a gas-liquid channel vertically arranged in the gas cavity, the gas-liquid channel is a pipeline penetrating through the gas cavity, gas holes communicated with the gas cavity are formed in the side wall of the pipeline, the tower type reactor comprises a gas outlet and a circulating liquid outlet at the upper portion, a liquid inlet is communicated with the bottom of the tower type reactor, the circulating liquid outlet penetrates through the wall of the tower type reactor and is communicated with the gas-liquid channel through a liquid circulating pipeline, a circulating pump and a mixer are arranged on the liquid circulating pipeline, and the inlet of the mixer is communicated withthe upper portion of the tower type reactor through the gas phase balance pipe. The ozone oxidation reactor disclosed by the invention has the advantages of good catalyst fluidization performance, small gas pressure drop, large gas-liquid mass transfer reaction area, almost 100% utilization of gas, high reaction speed and the like.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to an ozonation reactor and a using method thereof, which can be used for industrial waste water treatment. Background technique [0002] Ozone is an unstable and easily decomposed strong oxidizing agent. Ozone oxidation treatment of wastewater uses low-concentration ozone prepared on-site from air or oxygen. The process facilities of ozone oxidation water treatment are mainly composed of ozone generator and gas-water contact equipment. Ozone oxidation is mainly used to oxidize and decompose pollutants in water treatment, and is used to reduce BOD.COD, decolorize, deodorize, deodorize, sterilize, kill algae, remove iron, manganese, cyanide, phenol, etc. In recent years, as the pollution of general public water has become increasingly serious and advanced treatment is required, the trend of using ozone as an oxidant has reappeared internationally. The main advantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78
CPCC02F1/78C02F2201/002C02F2201/784
Inventor 张志炳张锋罗华勋周政孟为民
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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