*Water and Waste System of Aircraft A320 | ATA-38*
-The water and waste system supplies potable water to the lavatories and galleys of an airplane; and removes the sink and toilet waste.
Potable water is stored in a tank capacity of 200 liters tank in an airplane.
The airplane has two drain masts. Waste water drains overboard through these two anti-iced drain masts. These wastewater comes from the aircraft galleys and from the lavatories sinks. The forward mast drains wastewater from the forward cabin and the aft drain mast drains wastewater from the aft cabin.
Differential pressure (created by the vacuum generator) discharges the waste water from the toilet bowl to waste storage tank in flight, and gravity does so on the ground. Differential pressure created by vacuum generator forces the waste from toilet bowls into the waste storage tank of aircraft.
("On the ground and below 16000 ft. " the vacuum generator activates in order to have toilet suction for the waste.
("On flight above 16000 ft." the vacuum generator deactivates" and let the differential pressure between the cabin pressure and outside atmospheric pressure let the waste sucked-in from toilet to the waste holding tank.)
-Do airplanes dump toilet waste in the air?
Definitely No ! Waste isn’t dropped out of the plane when you press the flush.
Lavatories on modern aircraft equipped with “Vacuum Flush” type technology to eliminate solid and liquid residue from the toilet bowl. Now no longer use of chemical toilet blue water recirculated with an electric flush in the modern airliner.
Why is an airplane bathroom called a lavatory?
-Airlines don't want misguided passengers, particularly those not familiar with the word, to rest in that room. They want them to do their business and get out, so other passengers can use it. ... “Lavatory” is a completely accurate word for that room in all forms of English.
*Replacement of Flush Control Unit (AMM Reference: 38-31-12 PB 401)*
*Check-out my videos:
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