Liquid Flush Toilets

Flush toilets are the most common type of toilet found in passenger aircraft.

Each toilet is completely self-contained, its waste collection tank being mounted directly below the toilet bowl.Each toilet unit is installed above the toilet compartment.

It consists of:

1. A seat. 

2. Cover and surround.

3. Toilet bowl

4. Tank top and flushing system 

5. Waste tank and outlet bowl

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  Below diagram shows an overview operational characteristics of an liquid flush type toilet.the ground connections and the ground flushing and cleaning method is very clearly shown in it. 
  
   

Removavble Toilets

The number and type of toilets fitted in an aircraft cabin varies according to the size and type of aircraft.

Large aircraft can accommodate several changes to the cabin area including additional toilets.

The removable or ‘portable toilet’ is the simplest type of aircraft toilet and is usually fitted in the smaller types of aircraft.

Often called an ‘Elsan’ toilet, it is simply a bin containing a quantity of disinfectant and deodorant.  A seat is fitted onto the top of the bin and when the toilet is installed in the aircraft it is covered with a decorative laminate.

At the end of a flight the toilet is removed from the aircraft and emptied.  After refilling with the correct amount of disinfectant and deodorant it is replaced in the aircraft.

Toilets of this type are normally secured by a quick release method of attachment such as pip pin fasteners.