PT Journal AU Nemeth-Katona, J TI The Environmental Significance of Bioindicators in Sewage Treatment SO Acta Mechanica Slovaca PY 2010 BP 92 EP 97 VL 14 IS 2 DE Environmental Quality; Sewage Treatment; Polysaprobic Sewage Water; Mezosaprobic Sewage Water AB The presentation is about the significance of the bioindicators concerning environmental protection within the process of cleaning sewage. The existence of one or multi-celled organisms indicates the presence, condition or absence of certain parts of the water cleaning process. This way the optimal operation of the purifying appliances can be checked continuously and controlled in an environment friendly way. ER