公开(公告)号：US3623977A

公开(公告)日：1971-11-30

申请号：US3623977D

申请日：1970-06-25

Applicant: FMC CORP

Inventor： REID GEORGE W

IPC: C02F1/02 ,  C02F1/72 ,  C02F9/00 ,  B01D1/02 ,  C02C1/02

CPC classification number: C02F1/72 ,  C02F1/02 ,  C02F2201/001

Abstract: The method of treating waste materials such as aqueous sewage involves the steps of simultaneously comminuting and oxidizing waste suspended in an aqueous medium while said waste is being held under flow equalizing and Biochemical Oxygen Demand (B.O.D.) equalizing conditions, preheating aqueous waste withdrawn from said oxidizing zone for delivery to a radiant heating zone to a temperature level for pasteurization of said waste and above the vaporization temperature of water at the gas pressure maintained in said radiant heating zone, subjecting at least part of the preheated aqueous waste, introduced into said radiant heating zone under conditions to break up the liquid into droplet form, to direct radiant heat whereby the aqueous portion of said aqueous waste is immediately converted to vapor, the unsatisfied B.O.D. of the solid waste is substantially eliminated and viable material is destroyed, and separately discharging inert ash solids and the mixture of gases and vapor produced in said radiant heating zone.