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    STUDIA AMBIENTUM - Issue no. 1-2 / 2012  
         
  Article:   STUDY ON INCREASING THE EFFICIENCY OF BIOLOGICAL TREATMENT BY USE NEW MICROORGANISMS.

Authors:  CASEN PANAITESCU. 		 
       
         
  Abstract:   The industrial wastewaters from the petroleum refining industry are characterized by high amounts of organic compounds, but also contains nitrogen compounds, which justify the necessity of a biological wastewater treatment. Some substances are easily degraded by microorganisms of active sludge, other require a selected and adapted flora. In this study were followed to introduce new microorganisms in biological treatment step to observe the biological process performance; the study was performed on laboratory scale. Were analyzed microscopically samples of different microorganisms, then were selected the optimal sample and were introduced it in the biological system for observing the effects on baseline characteristics of wastewater in order to obtain a high efficiency.

Key words: industrial wastewater, microorganisms, biological treatment, BOD
 
         
     
         
         
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