A catalytic oxidation treatment device for refractory wastewater

Abstract

The invention provides a catalytic oxidation treatment device for hardly-degraded wastewater. The catalytic oxidation treatment device comprises a trough, a water inlet pipe, a guiding plate and a water outlet pipe. The guiding plate is arranged in the trough, and the inside of the trough is divided by the guiding plate into a guiding area and a sediment area which are communicated; the bottom of the trough is in a V shape, the bottom end of the V-shaped bottom is located in the guiding area, and the water inlet pipe is arranged at the bottom end of the V-shaped bottom; the water outlet pipe is arranged at the upper end of the side wall on one side of the sediment area; the guiding plate has magnetism, and catalyst granules are arranged in the sediment area. According to the catalytic oxidation treatment device, the V-shaped bottom is adopted, the bottom end of the V-shaped bottom is located in the guiding area, the catalyst granules arranged in the sediment area are not prone to sediment at the bottom of a reaction trough, and catalysts are not prone to losing; the catalytic oxidation treatment device is simple in structure and easy to install, and can be applied to organic-pollutant-containing oxidation treatment.

Description

technical field [0001] The invention relates to the technical field of recycling industrial wastewater, in particular to a catalytic oxidation treatment device for refractory wastewater. Background technique [0002] High-difficulty wastewater has a wide range of industries, involving municipal (garbage leachate), papermaking, petroleum, electronics, chemical, pharmaceutical, leather, printing and dyeing, military and other industries. The number is large, there are tens of thousands of chemical raw material enterprises in the country, the harm is great, and the main source of pollution of water bodies has caused frequent occurrence of cancer villages in our country. Due to the wide variety of chemical industries, complex processes, and diverse products, the pollutants discharged during production are of various types, large quantities, and high toxicity. Sexual technical problems. Such wastewater is extremely harmful to the environment. Pollutants are difficult to biodeg...

AI Technical Summary

Problems solved by technology

Pollutants are difficult to biodegrade and have inhibitory and toxic effects on biochemical reactions; the incineration method has the disadvantage of high energy consumption for steam evaporation, and it is easy to cause scaling and even damage to the boiler when the salt is high.

[0003] h 2 o 2 And the Fenton method is a deep oxidation technology based on the generation of oxidative free radicals, using free radicals to initiate a chain oxidation reaction, although the activation energy of the oxidation reaction is significantly reduced, and the oxidation reaction rate is increased, thereby rapidly destroying the molecular structure of organic matter. Oxidative degradation removes organic matter , but still has the following defects: large consumption of ferrous salt, high loss rate, and large sludge production

[0004] CN102992453A discloses a two-phase circulation catalytic oxidation device, including a pH adjustment tank for adjusting the pH value of wastewater, and an electrolytic oxidation tank for reducing Fe3+ to Fe2+ at the same time for Fenton oxidation reaction, which requires a large amount of power consumption and a large amount of Fe ions drain

Images