The lack of access to drinking water remains one of the most urgent challenges on a global scale, and now a young Italian inventor is proposing a solution as simple as it is ingenious: a portable purifier that does not require electricity and could reduce dependence on plastic bottles.
Developed by Salvatore Ferrante, a researcher at the University Iuav of Venice, the device was conceived as part of his university thesis and is currently participating in the James Dyson Award, one of the most prestigious competitions in the field of design and technological invention.
“I was looking for a project that could really have an impact on communities facing emergencies or structural situations of exclusion,” Ferrante explained in the context of the competition.
## A system without plugs or batteries: works with solar power or manual force
Unlike conventional purifiers that rely on gravity or electrical energy, this device uses a motor recharged with solar energy or a manual crank, allowing it to generate the necessary pressure to push water through ultrafine membranes that remove contaminants.
After experimenting with biological filters, UV rays, and chlorination, Ferrante opted for the use of semipermeable membrane filters, which offer an ideal combination of efficiency, portability, and ease of use. The result: cleaner water, without energy dependence and without plastic waste.
## Compact, intuitive, and practical design for challenging contexts
The purifier includes:
– A bellows-type container that also serves as packaging.
– A removable filter that attaches to the base with a rail.
– A flexible tube to channel water from the reservoir to the filter.
– A solar pump and a crank that can be alternated according to the conditions.
– A collapsible bottle to collect purified water.
Its use is simple: expand the container, connect the filter and the tube, and choose whether to pump with solar energy or manually. This pressure is key to passing through membranes with pores smaller than those of conventional systems, increasing purification effectiveness.
## Designed for emergencies, but useful in any corner without electricity
The device was designed to be used in rural areas, humanitarian crises, or after natural disasters, where electricity and access to safe water are scarce or nonexistent.
It is lightweight, portable, and intuitive, making it a valuable tool in extreme conditions.
## Next steps: technical adjustments and further validations
Ferrante already envisions improvements, such as:
– Defining the definitive electric motor to be used as a pump.
– Establishing the optimal operating pressure.
– Determining the ideal pore size of the membrane.
– Including a backwash system for filter cleaning.
“I hope to continue perfecting it to make it truly useful where it is most needed,” concluded the inventor.
*Cover photo: James Dyson Award*
