%0 Journal Article %T SIMULATION OF THE WASTE WATER PURIFICATION SYSTEM OF LIVESTOCK FARMS BASED ON PETRI NETS %A Savdur, S.N. %K modified Petri nets, wastewater treatment of livestock farms, simulated systems, chemical and technological system, computer modeling %J Agrobiotechnologies and digital farming %D 2023 %N 2 %P 5 %I Kazan state agrarian University