TY JOUR TI Evolution of Floatation Equipment for Sewage Treatment аnd Active Sludge Thickening KW floatation sewage treatment KW active sludge thickening KW flotator KW floatation combine. JO Safety in Technosphere AU Senik, E.. AU Ivanov, M.. AU Vinogradov, M.. AU Taranov, R.. AU Kozodaev, A.. AU Ksenofontov, B.S. AU Voropaeva, A.. PY 2014 IS 3 PB INFRA-M Academic Publishing LLC.