Microfauna in the activated sludge treatment of the effluent from a soybean processing industry: a form of evaluation and control of the process

ABSTRACT Wastewater treatment system by activated sludge, the purification of organic matter specific heterogeneous microorganisms, occurs in presence oxygen aeration tanks. The analysis microfauna present sludge is an important indicator performance and efficiency system. Considering this importance, objective work was to identify microorganisms which are part tank effluent plant a soybean processing industry state Mato Grosso, evaluating biological activity process. Protozoa bacteria were identified through electronic microscopy physical-chemical analyses such as pH, dissolved oxygen, nitrogen, phosphorus, BOD, COD, suspended solids, SVI. During study, it possible related flake formation, degradation, nitrification denitrification, also thecamoebas, micrometazoa, fixed ciliates free natantes, characterizing process with good structure flakes between ideal filamentous bulking high age. identification efficient bioindicator condition removal BOD COD 59.75 67.09%, respectively.