Issues of classifying surface runoff, treatment technologies and methods (for the discussion)

Summary

An analysis of the qualitative composition of surface runoff and treatment requirements depending on the characteristics of the effluent receiving water are presented. A comprehensive approach is proposed while choosing process solutions and the basic composition of the treatment facilities to achieve the required treatment efficiency. For the implementation a classification of surface runoff and the main treatment processes with differentiation depending on the regulatory requirements to the effluent has been developed. The proposed classification provides for unifying the procedure for choosing the main process solutions.

Key words

treatment facilities , surface runoff , classification , technologically regulated substances , public wastewater disposal system , required treatment level

Expert and analytical assessment of the safety and risk
in analyzing the hazardous impact of techno-natural processes
on the facilities and environment

Summary

In accordance with the general provisions of the expert-analytical methodology for assessing the risk of hazardous impact of techno-natural processes of various origin on the facilities and environment, a method for calculating the risks of techno-natural processes is proposed. The method is based on a detailed analysis of research materials on the hazard level of processes and vulnerability of the facilities and environment, a quantitative assessment of the hazard level and degree of vulnerability, followed by the use of probit analysis to calculate the formation of risks. For the classification of safety and risk levels adopted for work, the criteria are determined and their values are defined that provide for assessing the levels of safety and risks of hazardous techno-natural processes of various origin. The proposed method for assessing the risks of techno-natural processes is illustrated by a more detailed study of the classification and assessment of the safety and risks of hydraulic engineering structures of different categories.

Key words

safety , risk , environment , hydraulic engineering structures , method , techno-natural process , опасность , vulnerability , quantitative evaluation , classification , изыскания