Pure Paani is exploring an array of distinct pump filter prototypes in order to determine which systems work best in low-income communities. Such devices need to be effective and portable while also being durable and affordable.  The two most feasible filter types include hollow-fiber, ultra filtration membranes commonly used in gravity and RO systems and […]

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Overview We want to incorporate a filter into our device that provides a high standard of contaminant reduction while operating at a high flow rate. In pursuit of such performance, we’ve decided to experiment with “ultrafilters” used in Kent-brand gravity systems. These filters route water through a bundle of “hollow fibers” which impede the progression […]

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Building a customized 3D pump to work off of low-voltage sources Overview While Pure Paani is focusing primarily on developing a series of hand-powered water filtration devices, the feasibility of low-wattage, motor-powered devices is worth considering. Most gravity filters can provide a flow rate of less than 0.1 liters per minute. It is possible to […]

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