As an organic waste gas purification unit, it is suitable for treating organic waste gases produced in various industries. The treatable organic solvents include benzene, ketones, esters, alcohols, ethers, alkanes, and other mixed types. This series of purification units can be widely used in the organic waste gas purification of paint and spray workshops in the automotive, shipbuilding, motorcycle, bicycle, household appliance, furniture, piano, and container production industries. It can also be matched with production lines such as shoe adhesive, printing can making, chemical plastics, printing inks, cables, and insulated wires.