| To ensure potable water of drinking quality, chemical treatment is required for reverse- osmosis freshwater generators. What is the purpose of chemical pre-treatment? |
| A) Chemical pre-treatment removes particulate matter and suspended solids from the sea water inlet to the unit to prevent fouling of the membrane modules. |
| B) Chemical pre-treatment removes particulate matter and suspended solids from the freshwater leaving the unit prior to distribution to the various freshwater storage tanks. |
| C) Chemical pre-treatment sterilizes the sea water entering the unit to prevent bacteria from becoming resident in the reverse-osmosis unit filters and membrane modules. |
| D) Chemical pre-treatment sterilizes the freshwater leaving the unit prior to distribution to the various freshwater storage tanks. |
