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Supergravity rotational flow micro-bubble ozone oxidation advanced treatment system for wastewater

A technology of ozone oxidation and advanced treatment, applied in the direction of oxidation water/sewage treatment, water/sewage treatment, water/sewage treatment equipment, etc., can solve the problems of low reaction efficiency, low mineralization degree of organic pollutants, high energy consumption, etc.

Active Publication Date: 2020-02-11
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a high-gravity swirling micro-bubble ozonation wastewater advanced treatment system to solve the problems of low ozone utilization rate, limited processing capacity and relatively low energy consumption in existing ozone catalytic devices. Higher, low degree of mineralization of organic pollutants and low reaction efficiency

Method used

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  • Supergravity rotational flow micro-bubble ozone oxidation advanced treatment system for wastewater

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Embodiment 1

[0024] During specific implementation: if figure 1As shown, a high-gravity cyclone micro-bubble ozonation wastewater advanced treatment system includes a pre-mixing system and a high-gravity oxidation system 1, and the pre-mixing system includes gas for fully mixing wastewater and ozone and forming micro-bubbles The ozone bubble nanometerization device 2 of the liquid mixture, the ozone bubble nanometerization device 2 is respectively connected to the ozone generator 3 and the exhaust gas utilization device 4 through pipelines; the high gravity oxidation system 1 includes a coaxial outer cylinder reaction tank 5 and an inner cylinder reaction tank 6, and the inner cylinder reaction tank 6 is located at the bottom of the outer cylinder reaction tank 5, and a hydrocyclone 7 and an ultrasonic generating device are also arranged in the inner cylinder reaction tank 6, and the ozone bubbles are nanometerized The water outlet of the device 2 is connected to the liquid inlet 8 provide...

Embodiment 2

[0032] With embodiment 1, only the following parameters are different: the ozone generator is an oxygen source ozone generator, the ozone concentration is 4mg / L, the ozone air intake is 80mL / min, the ozone output is 5g / h, the inclination angle of the hydrocyclone 45°, the rotation speed is 10m / s, the ultrasonic frequency is 1000kHz, the ultrasonic power is 0.8KW, the ultrasonic treatment time is 1h, and the gas-liquid mixed liquid inlet flow rate is 1m / s.

Embodiment 3

[0034] With embodiment 1, only the following parameters are different: the ozone generator is an oxygen source ozone generator, the ozone concentration is 2mg / L, the ozone air intake is 20mL / min, the ozone output is 3g / h, the inclination angle of the hydrocyclone The rotation speed is 60°, the rotation speed is 7m / s, the ultrasonic frequency is 8000kHz, the ultrasonic power is 0.5KW, the ultrasonic processing time is 0.5h, and the gas-liquid mixed liquid inlet flow rate is 8m / s.

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Abstract

The invention discloses a supergravity rotational flow micro-bubble ozone oxidation advanced treatment system for wastewater. The advanced treatment system comprises a premixing system and a supergravity oxidation system, the premixing system comprises an ozone bubble nanocrystallization device used for forming a micro-bubble gas and liquid mixture, and the ozone bubble nanocrystallization deviceis connected with an ozone generator and a tail gas utilization device through pipelines; and the supergravity oxidation system comprises an outer cylinder reaction tank and an inner cylinder reactiontank which are coaxially arranged, and a hydrocyclone and an ultrasonic generation device are further arranged in the inner cylinder reaction tank. The microbubble catalytic effect is combined with atubular rotational flow and circular flow mixed technology, so that generated ozone bubbles are small, the ozone mass transfer efficiency is greatly enhanced, the contact efficiency of organic pollutants, a catalyst and ozone is promoted, the reaction is thorough, and the ozone utilization rate is high. The ultrasonic generating device is arranged to keep the surface of a runner smooth, so the water flow resistance and the water head loss are reduced. The advanced treatment system has a good removal effect on phenol-containing high-concentration organic wastewater.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a high-gravity cyclone micro-bubble ozone oxidation wastewater advanced treatment system. Background technique [0002] At present, my country's industrial technology is in a stage of rapid development, and the pollution of industrial wastewater is becoming more and more serious. The types of pollution are organic, toxic, and harmful. The types and numbers of pollutants in water bodies are increasing. Classes, heterocyclic / aromatic organic compounds containing nitrogen / oxygen / sulfur, polycyclic aromatic hydrocarbons, cyanide and other toxic and harmful substances. After traditional physical and chemical pretreatment and biochemical treatment, chemical wastewater is often difficult to meet the corresponding wastewater discharge standards. It is still a typical toxic and harmful biological refractory industrial wastewater, which has become a restrictive problem for...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F101/34
CPCC02F1/78C02F2101/345C02F2303/14C02F2201/007
Inventor 孙文全徐昊孙永军周俊王英琨李帅
Owner NANJING UNIV OF TECH
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