Engine: Expired / General Subjects

1. 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.
2. 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.
3. 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.
4. D Chemical pre-treatment sterilizes the freshwater leaving the unit prior to distribution to the various freshwater storage tanks.

Tip: press A-D to answer