Activated Sludge - Microbiology And Process Control

Activated sludge consists of a mixed community of microorganisms that metabolize and transform organic and inorganic substances into environmentally acceptable forms. The typical microbiology of activated sludge consists of approximately 95% bacteria and 5% higher organisms (protozoa, rotifers, and higher forms of invertebrates). The term "activated sludge" refers to a biological process. This process cannot be monitored without using a biological tool: the microscope.

Microscopic Examination of Activated Sludge

Why do we need a microscope? Bacteria have a diameter of approximately 0.001 mm. The human eye cannot distinguish objects smaller the 0.1 mm.

• The Microscope
• Slide Preparation and Staining
• The Microbiology of Activated Sludge
• Process Control