Nkem Akinsoto

Interesting and welcome initiative. Kudos.

Wendy Wang

Can you explain a bit more about how DigiTap will support or invest in frontline health workers and/or services? Make sure your application clearly aligns with the Challenge’s specific focus for 2018.

I see you haven’t submitted a video, do you have some assets that you can share? It might help the judges review and understand your solution, especially the design and mechanism of the solution.

Consider providing greater explanation for what makes your solution different from the other similar, existing solutions for this issue (see Water ATMs by Piramal Sarvajal).

Has the technology been tested? Many attempts at automatic water filtration devices have been done, but many have failed due to technological infeasibility. If your team has tested a prototype of the product, it would be a good idea to describe the measurable results/yield of the device.

EJ EJ Mrs Evelyn Jibro


Thank you for the Feedback

In order to ensure that people consume clean and hygienic water, we currently use the below effective methods of filtrations.

1. Reverse Osmosis- The Water filtration begins with the reverse osmosis system. Because some sources of water that will be fed into the system are from the surface( River, Lakes, streams), there is high likelihood that such water will contains high level of salt, ions and large particles from the water. This filtration system gets rid of that and make the water almost drinkable. However, we move the water to a second method of filtration.

2. Activated Carbon Filter - In this method we pressurize the water from the first step filtration. The water is in this process get stripped of Chorine, Nitrates, protozoa, cyst, E.Coli,hepatitis A and Lead commonly gotten from corrosion of older fixtures or from the solder that connects pipes;this filtration is possible because of the ultra powered form of activated Carbon that we use.

Water from the second filtration goes into a "holding tank" which is about 10 litres in capacity, embed in this mini storage is an electronic water tester which test - the PH level , Chloride, salt. A GSM module is installed in the system to send alert via SMS when readings from the electronic tester are above accepted levels; simultaneously the valve leading to the 10,000litre water reservoir will be automatically closed, till authorized personnel detect the problem and why it occurred. This process prevents contaminated water from getting into the main reservoir which is connected to the Water ATM where people fetch water for consumption.

For now, testing of protozoa, cyst, E.Coli,hepatitis A, are done manually at determined intervals using strips and other effective testing methods.

Because the project is still on a Pilot stage, we are still working on electrical sensors that can automatically detect the above bacteria,Viruses and Mercury,Arsenic,Aluminum. We hope to achieve the feat before the end of this year.

Thank you

Julie Hernandez

Fascinating initiative. What water filtration method(s) does the system use? Could you describe more about the possible applications of the detection and reporting of viruses or bacteria? Can the system filter out or detect heavy metals or other compounds associated with industrial pollution?

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