The utility model relates to a small and medium-sized Chlorine dioxide multistage generator with simple operation, high conversion rate, high purity, multi-purpose and environmental protection chemical methods. The Chlorine dioxide generator consists of a kettle reactor passing through an acid resistant duct and a water spray vacuum device. The kettle reactor adopts two-stage or multi-stage reactors. The main reactor is equipped with an air distributor, and the secondary reactor is equipped with a balance tube to make the reaction more thorough.
As a new type of oxidant and disinfectant, Chlorine dioxide has become a leader in the field of water treatment due to its high efficiency, broad spectrum, residue free, by-product free disinfection ability and strong oxidation capabilities such as decolorization, deodorization, etc.