Biosolids Microbiology Photo Gallery

These are phase contrast microscopy photographs of organisms involved in the biological treatment of wastewater.

Phase contrast is preferable to bright field microscopy when high magnifications (400x, 1000x) are needed or the specimen is colorless or the details so fine that color does not show up well. Cilia and flagella, for example, are nearly invisible in bright field but show up in sharp contrast in phase contrast. Amoebae look like vague outlines in bright field, but show a great deal of detail in phase. Most living microscopic organisms are much more obvious in phase contrast.

It is the excess cellular mass of these organisms produced during the treatment of wastewater that makes up the "bio" of biosolids.

Photographs provided courtesy of the late Ronald Corner, Former Laboratory Manager, City of Cadillac Wastewater Treatment Plant.

Stalked Ciliate Zoothamnium 10X

Stalked Ciliate Zoothamnium 10X

Algae 40X

Algae 40X

Rotifer - extended 10X

Rotifer - extended 10X

Mastix of Rotifer 40X

Mastix of Rotifer 40X

Amoeba 40X

Amoeba 40X

Type 0041 filamentous bacteria 100X

Type 0041 filamentous bacteria 100X

Nocardia filamentous bacteria 40X

Nocardia filimentous bacteria 40X

Ciliate Chilodonella 160 microns 40X

Ciliate Chilodonella 160 microns 40X

Ciliate Chilodonella 160 microns 40X

Ciliate Chilodonella 160 microns 40X

Ciliate Trachelophyllum 10 microns 100X

Ciliate Trachelophyllum 10 microns 100X

Ciliate Euplotes 40X

Ciliate Euplotes 40X

Suctorian 40X

Suctorian 40X