Yesterday we constructed the water filter in the water treatment lab at RUET university.
The video explains the individual components that are needed in the embodiment of the household water filter and gives a short time lapse of its construction, followed by an explanation of the theory behind the system.
This is the first time we will be revealing the design here without the plastic components. So far the bamboo hacks we created work very well and don't take much time to make.
Today we are testing our design with contaminated water from the village. We will continue to test the design and the maintenance needed to be sure that the system's usability works with ease before giving the filter to a household in the village of Uttar Kazirpara.
SOME TECHNICAL EXPLANATIONS ABOUT FILTER’S FUNCTIONING:
Initially the water stays in the Bio-carrier where the AsOB (Arsenic Oxidizing Bacteria) grow, as the Bio carrier has a very large surface area, there is always more space/place for the bacteria to grow.
For the development of the bacteria oxygen and water are needed, therefore the filter has to run continuously.
After passing through the bio carrier the water falls into the sand/anthracite bottle where the supernatant water is exposed to air/oxygen for further oxidation process. Then it passes through the anthracite and sand which clear the minerals like Iron/Manganese, chlorine etc; in the sand column some AsOB further oxidise Arsenic. After sand, water passes through the cloth which absorbs bacteria and then effluence as clean water.
Enjoy the video!