OREDE-P RGTP Unit 41: Waste Water Treatment Package

What is the potential contributors to oily wastewater in LNG facility EXCEPT?

• Terminal Substation Area (Transformers)

• Workshop and Maintenance Area

• Fire-Water Pump Area (Diesel Day Tank)

• Sea Water Pump Area

What is the maximum capacity use to separate oil from wastewater?

• 100 m3/hr

• 150 m3/hr

• 200 m3/hr

• 250 m3/hr

What is the function Oil Skimmer?

• collect oily wastewater from the various area throughout the terminal

• to remove up to 20 gallons of oil per hour from the oily wastewater surface

• to stir wastewater in Sump pit

• to cooling wastewater temperature

What are the important parameters to monitor wastewater systems?

(You may choose more than one answer)

• Flow

• Temperature

• Oil Concentration

• pH

What is the pH allowable range before discharge outfall?

• pH 6.5 – 7.5

• pH 5.5 – 6.5

• pH 7.5 – 8.5

• pH 2.5 – 4.0