Today was a rather monotonous day according to Singapore’s standards, because we had little to do with time passing slowly. Nonetheless, the mudpie we “baked” yesterday was ready to be taken out of the “oven”.
The ingredients for our cement cake is as follows:
1. 32kg gravel
1. 32kg gravel
2. 32kg sand
3. 16kg cement
4. 15l of water
How you make this it, mix the first 3 thoroughly. Then create a volcano-like crater in the middle. Pour in half the amount of water and mix. Then, add the rest of the water gradually. Tadahhh… you are ready to bake your mudpie!!
Remove baking tin, and tadahhh, you get your Bio-sand filter cake!
After lunch, we were taught how to use the bio sand filter.Basically the idea is a copy of earth’s natural process and how it cleans itself. The most important component of the BSF is the sand. When water is passed through it, the micro organisms on the top surface eats the bacteria and when the water that comes out is almost 80% cleaned.
1. First, put in 5cm worth of rough gravel,
2. followed by 5cm of fine gravel on the next layer.
3. Put water through to rinse
4. Pour in 35kg sand and fill with water again.
5. The water that comes out is clean to go with your pie!
Here's us bringing back our VERY OWN CREATION!!!
A lovely family picture...
