Abstract: A improved activated sludge system and method for treating wastewater containing contaminants is disclosed which offers a broad array of advantages over conventional activated sludge wastewater treatment systems, including smaller size, higher rates of operation, higher oxygen transfer efficiency, lower operating costs, and a substantially decreased level of excess sludge production. The improved activated sludge waste treatment system of the present invention has two processing tanks rather than the several tanks that are commonly found in activated sludge systems for treatment and sludge management equalizations, including anaerobic processes. The first processing tank is a contact tank which hosts a reaction which functions not merely to digest the maximum amount of contaminants, but instead to bind contaminants to the microorganisms through absorption, adsorption, precipitation, or digestion so that they can then be removed from the liquid in a solid/liquid separator.
Type:
Grant
Filed:
September 6, 2001
Date of Patent:
December 3, 2002
Assignee:
Procorp, Inc.
Inventors:
Kevin P. O'Leary, Thomas H. Probst, Jenchie Wang, David A. Wilson, Henry J. Probst
Abstract: A luminescent writing or display device and method of manufacturing the same which includes a transparent vinyl sheet containing a fluorescent or neon dye and an opaque sheet made from coated paperboard stock. An acrylic resin varnish is provided on a portion of the paperboard stock for forming a contact surface with the vinyl on which an image may be created by applying pressure thereto. The image is readily erased by separating the sheets. Another portion of the paperboard stock receives printing inks for providing a permanent ink display on a header portion of the device. The device may be manufactured in a continuous process at a reduced cost.
Type:
Grant
Filed:
June 29, 1993
Date of Patent:
November 29, 1994
Assignee:
Procorp. Inc.
Inventors:
Peter A. Confalone, Jr., Ronald W. Dart
Abstract: A luminescent writing or display device and method of manufacturing the same which includes a transparent vinyl sheet containing a fluorescent or neon dye and an opaque sheet made from coated paperboard stock. An acrylic resin varnish is provided on a portion of the paperboard stock for forming a contact surface with the vinyl on which an image may be created by applying pressure thereto. The image is readily erased by separating the sheets. Another portion of the paperboard stock receives printing inks for providing a permanent ink display on a header portion of the device. The device may be manufactured in a continuous process at a reduced cost.
Type:
Grant
Filed:
May 22, 1991
Date of Patent:
October 5, 1993
Assignee:
Procorp, Inc.
Inventors:
Peter A. Confalone, Jr., Ronald W. Dart