Ozone catalytic oxidation technology application

Ozone catalytic oxidation technology has technical advantages in the treatment of pharmaceutical wastewater, printing and dyeing wastewater, phenol-containing wastewater and landfill leachate:

1 Application of catalytic oxidation technology in post-treatment of pharmaceutical wastewater

Most pharmaceutical wastewater has high COD and poor biodegradability. It is expensive and uneconomical to treat it solely by physical and chemical methods, and ordinary biochemical treatment is simply not feasible. Therefore, ozone pretreatment can be used first, mainly to improve the biodegradability of wastewater. Subsequent biological treatment reduces the difficulty and reduces COD at the same time.

2.Application of ozone catalytic oxidation technology in post-treatment of printing and dyeing wastewater

Printing and dyeing wastewater pollutes the environment very seriously. It has large water volume, large fluctuations in water quality, complex and high content of pollutants, and high color, chemical oxygen demand (COD) and biochemical oxygen demand (BOD). It is a wastewater at home and abroad. One of the industrial wastewaters that is difficult to treat. Ozone oxidation technology can ring-open and decolorize dyes and improve the biodegradability of wastewater. In addition, ozone is converted into strong oxidizing substances such as OH, which reacts with organic matter to break the unsaturated bonds in the chromophoric group of the dye and generate colorless organic acids, aldehydes, etc.. with small relative molecular weight, thereby achieving decolorization and degradation. Purpose of organic matter.

3.Application of ozone catalytic oxidation technology in post-treatment of phenol-containing wastewater

Phenol-containing wastewater is one of the more common and very harmful industrial wastewaters. Phenol is a recognized “three-cause” substance that is carcinogenic, teratogenic, and mutagenic. The treatment of industrial phenol-containing wastewater is an urgent need to solve in the field of industrial wastewater. One of the questions. Studies have shown that after ozone catalytic oxidation of coking plant wastewater with a phenol content of 227 mg/L and a pH value of 7.3-7.6, the phenol content in the water was reduced by 98%.

4.Application of ozone catalytic oxidation technology in post-treatment of landfill leachate

Landfill leachate is an extremely polluting organic wastewater with high pollutant content. There are as many as 77 kinds of organic pollutants, including 5 carcinogens and co-carcinogens. It is included in the “blacklist” of priority pollutants for environmental control in my country. , and landfill leachate will cause great pollution to the surrounding environment, landfill soil and groundwater. After ozone catalytic oxidation, the CODOF value of the biological treatment effluent of landfill leachate can be effectively reduced. Combined with the economical treatment, bio-ozone-biological combined technology can be used to treat landfill leachate.