Reduction of environmental risks in the process of car service at the stationary filling item
Estimation of the degree of environmentally negative impact of the operation of a stationary filling station and the search for activities in the field of reducing environmental risk in the process of servicing cars at a stationary filling station. In the course of the study, tasks were set for carrying out an estimate of emissions from a stationary fuel filling station; comparison of emission volumes with maximum permissible concentration (MPC); analysis of existing developments to reduce the negative impact on the environment of a stationary filling station with the identification of their shortcomings and advantages. The tasks were solved using sectoral emission estimation techniques; the review of existing developments was carried out on the basis of patent search materials. The annual emissions from reservoirs with petroleum products during their injection and storage, as well as from the fuel tanks of cars during their refueling, and in the spills due to the flow of oil products from the walls of filling and drain hoses were estimated. Comparison of the results obtained with the MPC of gasoline and diesel fuel vapors in the air, as well as petroleum products in waste water, showed exceedance of the limit values. Considered are the well-known fuel dispensers for supplying fuel to the vehicle’s tank. A promising technical solution has been determined for a fuel dispenser, the drain pipe of which is equipped with a sealed gasket with tubes for evacuating the vapors of gasoline for transport to reverse condensation. With the use of technology based on the reverse condensation of fuel vapors, the annual emissions of fuel vapor into the atmosphere and the natural losses of fuels and lubricants (fuel) are reduced by 2.5-5.5 times.