Calvin Students Develop Filtration System in Nicaraguan Village

Jesse van der Wees graduated from Calvin College this past spring with an engineering degree, shortly after helping to design a water filtration system that could change the lives of those in a country where he spent his childhood.

Van der Wees, a Canadian born in Haiti, spent much of his childhood in Managua, Nicaragua. His family is currently working in Nicaragua with World Renew.

Linking his personal ties to Nicaragua and his engineering studies at Calvin, van der Wees and his classmates proposed a practical and personal senior design project last fall. He believes that sustainable management of water, a scarce and valuable resource, is a major challenge of this century for both society and engineers.

In his senior design project class, van der Wees, along with classmates Hannah van der Vorst, Seth Koetje and Dalton Veurink, made it their goal to design a system that could disinfect a water supply capable of meeting the needs of a small, rural village in Nicaragua.

They named their project “Agua to NicarAgua, Working to Achieve Clean Water to those in Need.”

During the first semester, the group carried out a feasibility study for the project that allowed them to make key design decisions for everything from disinfection methods to energy sources for the project.

In late January, the team had the opportunity to visit Nicaragua to further educate themselves about the challenge they were undertaking, perform water testing and to meet the people their unit would soon be helping. In addition, the group chose a pilot location for their prototype.

“We visited a number of remote communities and each community wanted us to install our design in their town,” said team member Seth Koetje, a native of Grand Rapids, Mich.

The team constructed their prototype design this past spring semester along with an owner’s manual for the system. The final prototype, completed in early May, uses a solar panel to capture energy and then proceeds to use that energy to perform ultraviolet disinfection through the powering of an ultraviolet light.

This disinfection unit can be connected to the outlet of any water tank to make the water safe to drink. Designed to be sustainable, the unit can store enough energy to meet the daily drinking water needs of 100 people for five days without sun, with the ability to disinfect much more water on sunny days.

The completed unit was given to World Renew in June and is expected to be shipped down to Nicaragua either late this summer or early fall and installed in Waspam, Nicaragua—one of the many rural villages of the country—by the end of the year.

Located on the east side of the country’s central mountain range, Waspam has a tropical rainforest climate. Daily rainfall and routine tropical storms result in widespread erosion causing high silt content in rivers. This, along with frequent livestock use, compromises rivers as a source of drinking water. The lack of clean and dependable sources of drinking water is an overwhelming concern.

Koetje notes that Waspam’s proximity to the equator and remote location makes it an ideal site for his group’s project. UV disinfection and solar panels are both technologies that require little maintenance compared to most of the alternative water treatment options.

The expectation is that this prototype design will provide water to the community of Waspam for at least the next 10 years.

Regular use, routine cleaning, necessary repairs and continuous improvement of the design should help make this a feasible goal.

“Although we had to pick an initial community to install the prototype design, the hope is that World Renew would be able to install similar units in the neighboring communities if the prototype design functions well in the community of Waspam,” said Koetje.

Van der Wees noted that, although their water disinfection unit is effective, it is a simple system, allowing the recipients of the project to quickly familiarize themselves with how the system works, so they are able to make use of it.

In the eyes of the team, what makes this project a success is not simply the prototype itself, but rather fulfilling their Christian calling to serve.

Ultimately, the team believes the project is a commitment to bettering the world. Said van der Wees: “Engineering is all about serving. Each design has a goal of improving somebody’s life. As Christians, we strive daily to improve the situations of others by serving.”