Dry composting toilet

This afternoon volunteers Edna Lee and Joel Lee set-up a dry composting toilet at one of the community based day care centers of Batang Mekong at the Inayawan dumpsite, Cebu city.

This is a prototype project for the Batang Mekong Community based day care centers in partnership with the Psychology Volunteers on Bikes. The idea came about after the Kindai University field trip in Feb 2017. Edna Lee was told of the lack of toilets at the dumpsite and so the group presented to Terry Manguerra and Helen Abella of Batang Mekong the dry composting toilet as the simple solution to their problem.

Step one: Visit home and survey area for the location of maturing bin and composting toilet.

Step two: Show sample toilet and explain process of building and using.

Step three: Gather recyclable materials to use. Get 8 bamboo poles for the maturing bin. Find old tarpaulins for roofing and wall materials. Start making the maturing bin.

In this case, the maturing bin was set-up next to the pig cage.


Now the maturing bin is ready.

Step 4: Set-up the area for the composting toilet inside the house.


We used old bathroom partitions as walls and door.


This has two toilets, one for solid and another for liquid waste. The urine will be piped down to the papaya tree by the maturing bin.


Almost done. Now we teach the users how to use the toilet. Mix wood shavings and wood ash to be used as composting flush. To use the toilet, poo on the toilet for solid waste and after pooing, add one cup of the composting flush mix.


Now the dry composting toilet is waiting for its first user.

When the bucket is full, throw the contents of feces and the composting flush mix unto the maturing bin. Make sure the bin remains dry. You may add worms to the bin. The waste will dry up and turn into compost. The compost can then be used to start a small vegetable garden.

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