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:
Dec. 03, 1991
Filed:
May. 16, 1990
Lawrence K Wang, Latham, NY (US);
Mu H Wang, Latham, NY (US);
Chong S Hwang, Flushing, NY (US);
Harold Rhow, Hartsdale, NY (US);
Int'l Environmental Systems, Inc., Pittsfield, MA (US);
Globe Environmental Protection, Inc., Flushing, NY (US);
Abstract
A liquid treatment multi-stage process and apparatus thereof for removing dissolved, colloidal, volatile, suspended and living contaminants from water, wastewater or sludge streams which includes chemical feeding, static mixing, gas pressurization, hydraulic flocculation, sedimentation, flotation, adsorption, filtration and disinfection by converting dissolved solids to insoluble forms by oxidation and chemical precipitation, coagulating and clarifying colloidal substances and microorganisms, adsorbing, filtering and disinfecting the remaining contaminants in the liquid to produce a purified liquid. A majority of insoluble suspended particles in the liquid are collected by sedimentation and flotation separation procedures and subsequently dewatered and dried and all necessary unit processes operations are incorporated into an apparatus with common walls and drive mechanisms for improving the liquid treatment efficiency, reducing secondary pollution caused by scums/sludges, and eliminating the needs of a separate mixer, flocculator, pressure vessel, aerator, adsorber, filter, clear well and chlorinator.