The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 1996
Filed:
Dec. 02, 1994
John G Dobrez, Flossmoor, IL (US);
Frank T Prendergast, Woodridge, IL (US);
Dober Chemical Corporation, Midlothian, IL (US);
Abstract
A system and method are disclosed for controlling the amount of cationic coagulant to be introduced into a laundry waste water having a content of non-solid fats, oils and/or grease (FOG) which is to be reduced. This system comprises a detector, located upstream from the introduction of cationic coagulant and upstream of the reduction of FOG level, adapted to determine the electric charge value of a material comprising the laundry waste water having a non-solid FOG level which is to be reduced, and being substantially free of cationic coagulant, and to provide a signal indicative of this electric charge value and an automatic processor provided with a relationship of the amount of cationic coagulant to be introduced into the material to reduce the non-solid FOG level to a given level as a function of the signal, and adapted to receive the signal and to provide a control signal to a source of cationic coagulant to control the amount of cationic coagulant introduced from the source of cationic coagulant into the material.