The issue of this article is improving the ecological safety of gas filling stations (GFS) that are placed within urban areas and the boundary of the sanitary protection zone. It has been determined that the main share of GFS' emissions is produced by petroleum products, especially when reservoirs are filled fuel storage tanks. It was proposed the way for reduce emissions from fuel storage tanks during the filled operation. It could be reach by applying of an apparatus for the absorption of gasoline vapors from GFS' emissions into the atmosphere. There presented the results by proposed devices for cleaning emissions GFS' in this article. It was obtained the regressions of recovery effectiveness for the improving design devices by mathematical processing for fuel oil and kerosene as work sorbent liquids. There are suggesting some approaches for modeling and engineering calculation's ways of such absorbing recovery devices in this article. The research results were implemented for design of full scale industrial set up that was installed and successful tested in one aspiration schemes GFS situated in Stavropol region of Russia. It was showed the reliability of the proposed device for practical use in the structure of the city municipal economy.