Some problems in the quantitative estimation of the degree of no-waste production (cleanness) of chemical plants

A method of calculating the material resources utilization factorη m of the no-waste index was refined. The method is based on material balance of production (process) by components. A correlation was established between the characteristics of each element of a chemical technological system (CTS) and its topology, which can be used to correctly assess the degree of the no-waste character with consideration of the scale transition to the technological planning stage. New dependences were proposed for calculating the ecological safety factor which are valid for any ratio of the maximum permissible emission to the overall emissions.