| 摘要 |
The present invention is a reverse osmosis treatment device equipped with a first vessel (80) for subjecting water to be treated to a primary treatment, and a second vessel (82) for subjecting water to be treated, which has been treated by the primary treatment, to a secondary treatment, wherein: the interiors of the first and second vessels (80, 82) are each provided with an element (22) equipped with a reverse osmosis membrane, or a plurality of said elements connected in series by a water-collecting pipe; the first vessel (80) has a first discharge pipe for discharging permeated water, and a permeated-water-flow adjustment valve (64) for adjusting the pressure inside the first vessel (80), and connected to the first discharge pipe; and an energy recovery device (150) is positioned between the first discharge pipe and the permeated-water-flow adjustment valve (64). |
