Environmentally Friendly Waste System

We met up with Dr Han and Ireaneus at Ensure Engineering. We went through the prototype design with him and started to piece together the little details regarding our designs. We talked about the type of equipments needed, their cost and the materials of construction.


We came up with a 1.1m tall design of the digester. Made out of a transparent plastic (ask what plastic) that can withstand the heat from the heater in the aerobic stage of the digestion.

One problem that arises today was the difficulty in getting the materials needed. We calculated that the prototype required a circular base of diameter, 20cm for the height to be 1m. However, this is not do-able in practice because in the market, the largest circular base on offer is 16cm. Which means our prototype would have to be nearly 2m to achieve the same efficiency as opposed to it being 1m with a 20cm diameter base. Hence, we made the decision to change it from a circular design to a square design. The square based used is 20cm by 20cm. Allowing us to continue building the prototype at 1.1m.

Finally we settled that the height of each containment should be 37.5cm and the space below to collect sample and the space in between the containment should each be measuring 20cm in height. Thus, giving us a total height of 1.15m