Development of airport wastewater treatment technology

Abstract

Surface runoff of airfields is a serious environmental problem. The drainage system of a large airport has access to water sources, as a result, water bodies are polluted. The analysis of statistical data on determination of indicators of quality of sewage of airfields based on which the main polluting components were identified is carried out. Besides, seasonal dependence of pollution of drains from the period of operation of planes and airfields is established. This separation is due to the fact that the content of some polluting components depends on the time of year. Possible sources of pollution of wastewater of airfields, which may have a permanent, periodic and emergency nature, are presented. The analysis of airport wastewater collected at the outlet of wastewater treatment facilities, from the storage tanks of waste de-icing fluids, the selection of natural water was carried out above and below the point of discharge of wastewater into the water body. Based on the results of tests and identification of the main polluting components, conclusions were drawn about the main sources, causes of contaminants entering the water, the state of existing treatment facilities and wastewater collection systems at «Sheremetyevo» and «Domodedovo» airports. An all-season scheme of wastewater treatment from iron, petroleum products and ethylene glycol based on the rectification process is proposed.