Environmentally Friendly Waste System

Due to earlier delays in our project, the methane system was not sized properly. When we bubble the methane through, only small amount of bubbles can be seen going through the methane capture system. Therefore, we decided to try using cow dung instead of human waste to test the methane system. However, the system still did not show much improvement.

We made our way down to Viknesh Diary Farm and spoke to the owner Mr Manif. He generously allowed us to take a wet sample of the cow dung

Last week of planting

Second last week of planting.

Once the metal prototype was in place, we started the first run. This prototype was left running for 16 in total. 10 days anaerobic run and a 6 days aerobic run before we took the samples for testing. This second run was a lot smoother than our first run. By now, we have the necessary experience to conduct the experiment smoothly. The entire loading process went on without much of a hiccup.

Still some more planting

After the destruction of the original prototype and with all the leaking problems, we decided to change our material of construction and use metal instead. The metal would be welded together and would hence eliminate the problem of leaking. Moreover, the metal would definitely be able to withstand the 60oC of heating brought about at the aerobic stage.

The metal used was taken from an old cabinet and some of the valves and pipes were re-used from the old prototype. The air pump and the heater was dismantled and re-used.

The metal prototype was completed in about a week.

Our fourth week of planting