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UDC 628.23

Vasilyev V. M., Malkov A. V., Klementyev M. N.

Places of corrosive gas generation in the sewerage network

Summary

The factors that affect the generation of corrosive gases in the wastewater disposal system, saturation of the gas air environment with corrosive gases in sewers are considered. A number of structural components as well as hydraulic patterns of wastewater flow, its physical properties that enhance the gas generation processes are considered and described. The evaluation and prediction of the places of corrosive gas generation and emission provide for forecasting the measures focused on the reduction of the negative impact of emissions or their complete elimination. The operating services carry out regular sewer network monitoring with the purpose of detecting the places of emission generation. The future work of the services is limited to the isolation of corrosive gases by redistribution in the network, disposal into the atmosphere, neutralization or purification. The results of introducing the design of a pipe drop with a dead blanking in the lower part of the sewer shaft, ejector and pipe air vent are presented.

Key words

sewer , sewerage network , shaft , gas emission , corrosive gases , gas generation