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Filtering by: Date issued sim 1964-08-10 Rights Statement Copyright Not Evaluated

High-shear and pressure activated sludge treatment : solid-liquid separation

Creator:

Coddington, Charles William

Abstract:

Since the development of the activated sludge process in 1913 many attempts have been made to improve it. One approach has been to increase the oxygen available to the bio-mass. This study combined the use of elevated pressure and high-shear mixing to increase the oxygen transfer. The conventional method of...

Resource Type:

Masters Thesis
Cultural change as reflected in the dress and accessories of the Indian tribes on the Pacific Northwest coast

Creator:

Andersen, Beverly Joan

Abstract:

This thesis is a study of the dress and accessories of the Indians on the Pacific Northwest Coast at the time contact with white man was made, and during the period following contact, until cultural disintegration was complete. Information was obtained from historic accounts by early explorers, and books written...

Resource Type:

Masters Thesis
The effect of elevated pressure and high shear on oxygen uptake rates in activated sludge

Creator:

Streebin, Leale E.

Abstract:

The purification capacity of an activated sludge process is highly dependent of the rate of oxygen transfer from the air to the microorganisms. This rate can be increased in an air diffusion system by subjecting the culture to high shear and high pressure. A study of the effects of high...

Resource Type:

Masters Thesis