Sewage treatment plant odor pollution has been a headache for the relevant personnel, steel support anti ingenious hanging UV membrane structure is "hanging" with strong corrosion resistance of the fluorocarbon film abandoned covered steel structure on the outside of the membrane suspension. This will not only play the corrosion resistance of the UV film, and fundamentally solve the problem of corrosion of steel structure caused by contact with corrosive gas, so the steel structure can be designed according to the common corrosion grade of building steel structure considering the lifetime of 50 years, played in the performance of steel structures, the structure the perfect combination of frame and cover material.