| 摘要 |
A method and a system for production of divalent ion supplemented water, in particular Mg2+ supplemented water, said system comprising a desalination unit (DU), at least one divalent ion separation unit (SU) and three junctions placed as follows: a first and a second junction on the input line to the desalination system and a third junction on the desalination outlet line, the second junction being positioned between the first junction and the desalination unit. The system is configured to: - split, at the first junction, salty water ded via the system inlet line such that one part is provided to the DU and an another part is provided to at least one SU via at least one separator inlet line; - add, at the second junction, permeate from at least one SU outlet to the salty water fed via the first junction, thereby producing the DU salty water, and - add, at the third junction, brine from at least one SU reject line to the desalinated water, thereby producing the divalent ion supplemented water. A method of intentional struvite precipitation for phosphate recovery from wastewater is also disclosed, said method comprising adding brine produced from the SU according to said divalent ion production method to wastewater. |
