Randall Preston Tuttle

US Patent:

56038429, Feb 18, 1997

Filed:

Apr 18, 1995

Appl. No.:

8/423971

Inventors:

Roy L. Whitaker - Advance NC
Randall S. Tuttle - Winston-Salem NC

Assignee:

Amsco, Incorporated - Clemmons NC

International Classification:

C02F 1114

US Classification:

210743

Abstract:

A process is provided for the alkaline stabilization of substantially liquid sludge which includes the steps of providing sludge of low solids content to a basin, and providing alkaline additive in sufficient quantity to the sludge in the basin to increase the ph of the sludge to a level above 12 by utilizing a sludge/alkaline blending Y. The blending Y has a sludge arm conduit, an alkaline arm conduit, and an exit conduit. Alkaline additive is provided to the alkaline arm conduit and recirculated sludge/alkaline mixture is drawn from the basin and is provided to the sludge arm conduit. A sludge/alkaline mixture containing newly added alkaline additive exits through the exit conduit of the Y. The recirculated sludge/alkaline and alkaline additive are mixed and thoroughly intermingled as they pass through the Y. The contents of the basin are thoroughly mixed by mixers such that all particles of the sludge/alkaline mixture in the basin have a Ph level of at least approximately 12 and the pH of the sludge/alkaline mixture is maintained at this level for at least approximately 2 hours.

US Patent:

57165181, Feb 10, 1998

Filed:

Jul 23, 1996

Appl. No.:

8/685051

Inventors:

Roy L. Whitaker - Advance NC
Randall S. Tuttle - Winston-Salem NC

Assignee:

Amsco Incorporated - Clemmons NC

International Classification:

C02F 1114

US Classification:

210197

Abstract:

An apparatus for treating substantially liquid sludge having means for providing sludge of less than 10% solids content to a basin, means for providing an alkaline additive in sufficient quantity to the sludge in the basin to increase the ph of the sludge in the basin, a sludge/alkaline blender having a sludge arm conduit, an alkaline arm conduit, and an exit conduit, means for delivering alkaline additive to the alkaline arm conduit, means for delivering recirculated sludge/alkaline mixture drawn from the basin to the sludge arm conduit, means for delivering sludge/alkaline mixture containing newly added alkaline additive thoroughly intermingled with the recirculated sludge/alkaline mixture through the exit conduit of the blender, and means for mixing the sludge and alkaline mixture in the basin to ensure substantially all particles of the sludge alkaline mixture have a pH level of a minimum level.