Patent ID: 6143182
Filing Date: 2000-11-07
Classification: C02F

Abstract:
A process for chemically oxidizing wastewater containing TOC (total organic carbon) with reduced sludge production, said process comprisinginjecting water water, hydrogen peroxide and ferrous ions from different conduits into a fluidized bed reactor,thoroughly mixing the wastewater with ferrous ions and hydrogen peroxide in the fluidized bed reactor, which is provided with a suitable particulate carrier to cause iron (III) compound produced from said mixing to exclusively crystallize or coat onto said carrier and chemically oxidize said wastewater, andremoving the treated waste water from said reactor,wherein said TOC is removed from said wastewater and sludge production is reduced in the fluidized bed reactor,wherein the pH value of the wastewater ranges from about 2 to 5;wherein the hydraulic retention time of the wastewater in the fluidized bed reactor is about 10-600 minutes, andwherein the surface loading rate of the fluidized bed ranges from about 0.02 to 5 kgFe/m.sup.2 hr.