S.N. Savdur, E.I. Kadochnikova, Network Modelling of Biological Wastewater Treatment System of Paint Manufacture, International Business Management, Volume 10,Issue 23, 2016, Pages 5629-5632, ISSN 1993-5250, ibm.2016.5629.5632, (https://makhillpublications.co/view-article.php?doi=ibm.2016.5629.5632) Abstract: The study discusses the technological complex of Biological wastewater Treatment (BOT) of paint manufacture. Based on the review of the main modeling methods of discrete-continuous chemical processes, it substantiates expediency of using the theory of Petri Nets (PN) for modeling the process of wastewater treatment in paint manufacture. It is proposed to use a modification of Petri nets which is focused on modeling and analysis of discrete-continuous chemical processes by prioritizing transitions, timing marks in positions and transitions. A model in the form of Modified Petri Nets (MPN) is designed. A software package to control the process for wastewater treatment is designed by means of SCADA TRACE MODE. Keywords: Modified Petri nets;wastewater treatment of paint manufacture;modeled systems;chemical-engineering system;computer modeling