A Hydrostatic Pressure-Driven Desalination System for Large-Scale Deep Sea Space Station

Table 1

Concentration of major ions contained in deep seawater at depth of 1000 m and their upper limits specified in standard for drinking water by WHO.

Ions	Concentration at 1000 m depth (mg/L)	Upper limits specified by WHO (mg/L)
Na^+	11755.81	200
Mg^2+	1390.88	20
Ca^2+	422.61	50
SO4^2−	2540.56	250
NO3^−	6.32	50
Cl^− (chloride)	18851.19	250