Diversity of the Microbial Communities in River Water and Sediments after Dairy Wastewater Discharge

ABSTRACT

Functional diversity of the microbial communities in stream water, sediment water and sediments of Leva River in dependence on dairy wastewater discharge was studied. The aerobic heterotrophs and total coliform bacteria indicated a deterioration of water quality in river after wastewater discharge and vastly increase of the biodegradable organic matter. The deep analysis about the functional role of river microbial communities in organic matter degradation and nitrogen biotransformation was accomplished in the critical station. The obtained results confirmed that the microbial diversity, especially in the sediment zone, play an important role for indication and regulation of self-purification processes in water receiver.

Keywords:

• organic pollution
• physiological microbial groups
• self-purification
• water receiver