| 摘要 |
<p>1500317 Disinfecting aqueous effluent HOUDAILLE INDUSTRIES Inc 29 April 1975 [10 Oct 1974 7 April 1975] 17826/75 Heading C1C [Also in Division B1] A method for disinfecting aqueous effluent comprises the steps of continuously mixing and passing effluent having pretreatment biological values and an effective disinfectant dose level of a fluid disinfectant through a turbulent mixing zone while maintaining a turbulent energy dissipation level such that the mixing rate is at least 5 sec.<SP>-1</SP>, and so as to provide a turbulently mixed product stream having a uniform toxic environment, the turbulent mixing zone being produced by introducing at least one motive stream of a minor portion of the effluent to be treated, wherein the ratio of the volumetric rate of induction of effluent from the induction zone into the mixing zone to the volumetric flow rate of the motive stream is 1À4:1 to 23:1 and wherein the velocity is at least 17 feet per second, conducting the turbulently mixed product stream to provide a treated discharge stream such that the average residence time in the mixing zone of the product stream is 1À5 seconds or less while maintaining a specific energy requirement of at least 0À2 horse-power per million gallons per day of the discharge stream, and excluding from the discharge stream aqueous effluent which has not passed through the mixing zone. The fluid disinfectant may be chlorine gas, ozone, chlorine dioxide, and aqueous chlorine, bromine and iodine solutions. The waste liquid may be sewage.</p> |
