| 摘要 |
A method of separating a mixture into a plurality of more concentrated products utilizing recirculation and concentration of one product so as to extract a substantially large fraction of another product from the mixture; and the apparatus utilizing the present method in a system, such as a reverse osmosis system, capable of very high recovery rates, efficient power usage, and long component life. Substantially 100% of the concentrate product exiting a reverse osmosis filtering device (15) recirculates through a conduit (18) until the concentration of the concentrate reaches a predetermined level, as determined by sensor (28) , at which time the concentrate is purged by opening of drain valve (30). This achieves recovery rates, also providing for automated cleaning and maintenance of the system, thus optimizing life of the components. |
