By designing “Pull-Clean”, me as a designer aim to help earthquake disaster victims to gain access to clean water. Several earthquakes have been happening in Sumatra in quite a short period of time, preventing the disaster victims the access to get their basic needs (foods, shelter, hygiene). The fact that Indonesia is one of developing countries didn’t help either since government budget alone will not enable disaster victims in Sumatra to get the help they need. After several interviews with organizations’ members which has directly helped Sumatran victims, finally it is clear to us what’s definitely lacking in Sumatra, especially in refugee camp. Some information that we collected from them are that kids need to be de-traumatized, victims need proper place to lie on and healthy foods – and last but not least, clean water is needed for hygiene and drinking since some people are starting to get digestive tract infections and respiratory problem.
After some more research from several different sources, turns out there are several restrictions due to the budget and the location of Sumatra. Sumatra is a small island, which mostly is covered by rainforests, with Indian Ocean located West of it. The geographical situation was one of the problems encountered by international aid rescuers. Budget restriction will also be the main factor needed to be considered for designing since Indonesia is an undeveloped country.
“Pull-Clean” is a water filter which can be used for the community as it is a bucket set in which the lid, where the water filter is installed in, is designed to kill 99.3% bacteria in water, no matter how polluted it is and filter it into clean, drinkable water. The High Impact Polystyrene (HIPS) outer body part, along with the tubes allows it to be sold at a low cost. The manufacturing process that is suitable for the bucket and the lid, along with the tubes are injection molding – a process which does not take a lot of effort to produce and at a low cost too. A small amount of silicone is used as an inner lid shell, to make the lid not slippery and seal the water. As for the filter, which is located inside the center tube of the lid- it consists of 4 little compartment: the textile pre-filter, polyester filter, beads impregnated with iodine and lastly a chamber of granulated active carbon. The size of the bucket is also made so that it's going to be the same as standard sized buckets available out there. So, people can also not buy the bucket and also buy the lid -- allowing them to use their EXISTING buckets which they have already to minimalize the cost.
To use “Pull-Clean”, first use the bucket body to scoop the polluted water from anywhere, (e.g: river) and then put the bucket lid on. After making sure the lid is put tight, turn the bucket (filled in with polluted water) and the lid upside down. The polluted water will be forced down the tubes, getting through the 4 chambers and then will be kept inside the side tubes. The first chamber which consists of hundreds of microns in diameter will filter the bigger particles, e.g : rock or dirt. After that the water passes the second chamber which is the polyester filter, hence 99.3% of bacteria will be killed. Next chamber, which consist of beads that are saturated with iodine will kill more bacteria. The final chamber consists of granulated active carbon that will improve the smell and taste of water, along with filtering more parasites. Then there’s a hole, marked with another color on the middle of front tube. When tube is pulled, hole will be exposed, enabling water to pour out. The minimal manufacturing process is suited to the low budget cost.
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I like your idea of clean water filter and it is really different to existing product which is really good. Also the 3D drawings are really good. However, I think you need to have more CAD drawing of inner parts and you need to concider the leakage problem.
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