John Michael Beller

US Patent:

50966154, Mar 17, 1992

Filed:

Jul 19, 1988

Appl. No.:

7/221490

Inventors:

Donald S. Prescott - Shelley ID
Robert K. Schober - Midwest City OK
John Beller - Idaho Falls ID

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

C09K 330
B05B 124

US Classification:

252305

Abstract:

An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates.

US Patent:

50008595, Mar 19, 1991

Filed:

Oct 26, 1988

Appl. No.:

7/263161

Inventors:

Dan F. Suciu - Idaho Falls ID
Penny M. Wikoff - Idaho Falls ID
John M. Beller - Idaho Falls ID
Charles J. Carpenter - Lynn Haven FL

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

C02F 152
C02F 170

US Classification:

210713

US Patent:

RE369152, Oct 17, 2000

Filed:

Mar 17, 1993

Appl. No.:

8/032581

Inventors:

Dan F. Suciu - Idaho Falls ID
Penny M. Wikoff - Yukon OK
John M. Beller - Idaho Falls ID
Charles J. Carpenter - Blacksburg VA

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

C02F 152

US Classification:

210713

Abstract:

A process for treating industrial waste water containing hexavalent chromium (Cr. sup. +6) and other heavy metals is disclosed which comprises reduction of Cr. sup. +6 to trivalent chromium (Cr. sup. +3) and the precipitation thereof with other heavy metals by addition of sulfide ion and ferrous ion to the waste stream at a pH of about 7 to 9 under conditions such that sludge production by the process of the invention is substantially less than that characteristic of prior art processes. Polymers are added to the solution to assist flocculation and clarification of the waste stream. More specifically, the invention comprises adding sulfide ion in a sulfide to hexavalent chromium ratio of about 0. 7-2. 5:1 and adding ferrous ion in a ferrous to hexavalent chromium ratio of about 0. 5-5. 0:1. The waste stream pH is preferably maintained in the range of about 7. 2 to 7. 5.