催化臭氧氧化技术（Catalytic Wet Ozonation Oxidation,简称CWOO
）是利用臭氧在催化剂的作用下产生氧化能力极强的羟基自由基和单原子氧等活性粒子的性质处理难降解废水。该技术可以有效氧化难生物降解的多种有机和无机污染物污染物，如芳香类化合物，氰化物、硫化物、杀虫剂、除草剂等，同时具有脱色、除臭、杀菌的作用。
        催化臭氧氧化技术对废水酸碱度及盐度无特殊要求，适用于多种高盐低浓度有机废水。

The three catalysts are suitable for the use of medium and low concentration wastewater, that is, COD is 100~2000 mg/L. The specific catalyst suitable for which wastewater needs to be determined according to the experimental results.

1. Generally speaking, our ozone dosage is added according to the COD of the wastewater, because the removal rate of COD will not be known in advance. The mass ratio of ozone dosage and COD is generally 2:1, which can be appropriately increased or decreased through the removal effect.

2. The contact time between ozone and wastewater is 10~30 minutes, that is, the LHSV（Liquid Hourly Space Velocity） is 2~6h^-1, so that the ozone utilization rate reaches a better level. Of course, the longer the reaction time is, the more complete the ozone utilization will be, but when the LHSV is lower than 2h^-1, the reaction effect will not be improved a lot. If inlet flow is 1 L/hr, the volume of catalyst can be 167~500mL so that the LHSV can reach 2~6h^-1. You can decide according to your own situation.

3. You can first soak the catalyst in water for a period of time, then pour the water away, and repeat the process several times until the water is almost free of powder. Or, the catalyst is directly loaded into the reactor, and the catalyst bed is flushed with water at the same LHSV until there is no powder in the water.