Reactor for catalytically oxidizing wastewater through ozone and application method thereof

An ozone catalytic oxidation and reactor technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc., can solve problems such as affecting ozone and restricting the development of ozone catalytic oxidation technology, reducing equipment investment, The effect of improving the utilization rate of ozone and strengthening the reaction rate

Pending Publication Date: 2019-03-08
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, heterogeneous catalytic oxidation is mostly used in practical engineering applications. The mass transfer among the three phases of ozone, wa

Method used

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  • Reactor for catalytically oxidizing wastewater through ozone and application method thereof
  • Reactor for catalytically oxidizing wastewater through ozone and application method thereof
  • Reactor for catalytically oxidizing wastewater through ozone and application method thereof

Examples

Experimental program
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Embodiment 1

[0049] The above-mentioned reactor is used to carry out the ozone catalytic oxidation reaction of wastewater. The wastewater enters the bottom of the jet reaction chamber from the water inlet, flows upward, flows into the working fluid inlet of the injector through the water circulation outlet and the water circulation pipe, and flows into the working fluid inlet from the air inlet. After the ozone is mixed, a gas-liquid mixture is formed and sprayed downward. The gas-liquid mixture passes through the catalytic reaction of the first catalytic bed, overflows upwards and crosses the top of the partition, enters the tower reaction chamber, and passes through the tray and the second catalytic bed. While flowing downward, it further mixes and reacts with the ozone from the bottom of the tower reaction chamber, preferably flowing out through the water outlet at the bottom of the tower reaction chamber; the unreacted gas is returned from the gas outlet at the top of the reaction chambe...

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Abstract

The invention discloses a reactor for catalytically oxidizing wastewater through ozone and an application method thereof. The reactor comprises a reaction chamber, a water inlet, a water outlet, a gasoutlet and a circulating water outlet, wherein a separation plate in the reaction chamber is used for separating the lower part of the reaction chamber into a jet flow reaction chamber and a tower type reaction chamber; the jet flow reaction chamber is internally provided with a first catalysis bed layer and an ejector; the circulating water outlet is connected with a working fluid inlet of the ejector; the gas outlet is connected with a sucked liquid inlet of the ejector through a gas circulating pipe; the water inlet is arranged at the bottom of the jet flow reaction chamber; the tower typereaction chamber is internally provided with a tower plate and a second catalysis bed layer; the water outlet is arranged at the bottom of the tower type reaction chamber; a gas inlet is communicatedwith the lower side of the tower plate and the gas circulating pipe; the gas circulating pipe is connected with a tail gas outlet. The reactor has the advantages of high mass transfer efficiency, rapid reaction speed, high ozone utilization rate, high COD (Chemical Oxygen Demand) removal rate and the like.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a reactor for advanced treatment of ozone catalytic oxidation waste water and a method for using the same. Background technique [0002] In recent years, with the increasingly stringent sewage discharge standards, the development of high-efficiency and low-cost wastewater advanced treatment technology has become more and more important. Advanced oxidation technology is a research hotspot this year. Ozone catalytic oxidation can generate hydroxyl radicals with high oxidation activity and non-selectively remove various refractory organic pollutants. Therefore, it has been widely studied and applied to advanced wastewater treatment. Ozone catalytic oxidation technology is divided into homogeneous catalysis and heterogeneous catalysis according to the catalyst used. Homogeneous catalysis, the catalyst is difficult to recycle, metal ions are easy to introduce secondar...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/78
CPCC02F1/725C02F1/78
Inventor 巫先坤李爱民周腾腾吴迪戴建军王华
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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