TY JOUR TI SAFETY ANALYSIS OF ELECTROFLOTATION WASTEWATER TREATMENT AT A FISH PROCESSING PLANT KW fish processing effluents KW chemical oxygen demand KW electroflotation KW «fault analysis tree» KW risk assessment KW probability KW quantitative method KW analysis JO Problems of risk management in the technosphere AU Silinskiy, V.A. AU Sokolov, L.I. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia