Donald James Mccarty

Author:

Donald James McCarty

ISBN #:

0608147893

Author:

Donald James McCarty

ISBN #:

0875891713

Author:

Donald J. McCarty

ISBN #:

0837132991

US Patent:

7396466, Jul 8, 2008

Filed:

Apr 29, 2004

Appl. No.:

10/554803

Inventors:

Joseph M. Bonazza - Tarentum PA, US
Donald J. McCarty - Elizabethtown PA, US
Navin Kadakia - Bridgeville PA, US
David C. Slack - Tampa FL, US

Assignee:

Tetra Process Technologies Seven Trent Services Company - Tampa FL

International Classification:

C02F 3/00
B01D 29/00

US Classification:

210605, 210610, 2101981, 210295, 210903

Abstract:

A system () comprising multiple units (-) and method for filtration of wastewater () is disclosed. Simultaneous denitrification of a single filter unit and normal filtration of the remaining filter units is provided for. Separate flow control systems () are described.

US Patent:

20130020257, Jan 24, 2013

Filed:

Mar 25, 2011

Appl. No.:

13/636600

Inventors:

Donald McCarty - Elizabethtown PA, US

Assignee:

SEVERN TRENT WATER PURIFICATION, INC. - Colmar PA

International Classification:

C02F 3/02
C02F 3/30
C02F 101/16

US Classification:

210614, 210620, 210630, 210622, 210150, 210 961

Abstract:

One or more embodiments of the present invention relate to a short cut or shortened method for the removal of nitrogen from wastewater by pairing an aerobic fixed-film biological reactor with an anoxic fixed-film biological reactor under unique operating conditions.

US Patent:

57763445, Jul 7, 1998

Filed:

Oct 26, 1995

Appl. No.:

8/548556

Inventors:

Donald J. McCarty - Mechanicsburg PA
Keith Dobie - Humarock MA

Assignee:

Tetra Technologies Inc. - The Woodlands TX

International Classification:

C02F 330

US Classification:

210605

Abstract:

A process and apparatus for treating wastewater containing nitrogen compounds is disclosed. The process includes passing the wastewater to be treated through a biologically active material in one direction to treat the wastewater and passing the treated wastewater through the biologically active material in a second direction to further treat the wastewater under alternating aerobic and anoxic conditions, converting nitrogen compounds to nitrates and nitrites, and converting nitrates and nitrites to gaseous nitrogen. The apparatus includes a mixing tank that includes an upper equalization area and a lower sludge settling area, a filtration tank containing the biologically active material in communication with the mixing tank, an adjustable aeration inlet supplying air to the filtration tank under aerobic conditions and eliminating or reducing the supply of air to the filtration under anoxic conditions, and a clearwell in communication with the filtration tank for recirculating treated wastewater or discharging the treated wastewater.