Softened water must be used. The filter units must be added at water pump inlet.

必须使用软化水。水泵吸水口必须加过滤装置。

The results showed that UF-NF integrated technique could provide high quality softened water, laying a foundation for seawater desalination by membrane process in Jiaozhou Bay area.

结果表明超滤-纳滤膜集成技术可为淡化系统提供优质的软化水，为胶州湾地区膜法海水淡化奠定了基础。