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Sludge management is a complex problem, as the environmental norms and regulations are more and more restrictive. From this point of view, wastewater treatment must be associated with valorization and/or controlled storage of the resulted sludge. Besides these norms, during the normal operation, social, economical and other legal criteria must be considered. Bioaugmentation is o process by which microorganisms degrade (metabolize) the organic pollutants from wastewaters and neutralize their toxic effect. There is ...

Biological wastewater treatment is part of biotechnology and represents a method by which dissolved organic impurities and colloid suspensions in wastewater are transformed by microorganisms in inoffensive degradation products (carbon dioxide, water, other products) and in new cell mass (biomass). All the biological processes are influenced by temperature, because micro-organisms activity and oxygen solubility depends on it and on pressure, too. The optimal temperature for biological treatment is between 10 and 30...