Table 1 - Operation of a slow rate anaerobic digester treating municipal

Table 4. Microorganisms groups observed in sewage sludge samples throughout the anaerobic digestion.

(-) absence of microorganisms.
Protozoa: (+) 1 to 5 cysts or oocysts per slide.
Helminth: (+) 1 to 2 eggs per slide, (++) 3 to 10 eggs per slide.