According to the property of the mineral and product requirement, mixed floating, priority floating and separation floating process can be used for the mineral.

The paper introduces the project of treatment of the oily waste water in the residue oil tank zone by advective separation of oil-blending and solidification gas-floating-coke filtration process.

The utility model provides a novel non-blocking efficient air-floating device and aims at solving the problem that oil-contained waste water treatment generates disposition and separation.