Reactor for catalytically oxidizing wastewater through ozone and application method thereof

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...

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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, wastewater and catalyst has always affected the effect of ozone oxidation, and at the same time restricted the development of ozone catalytic oxidation technology.

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