Frederick, MD

System to remediate well water for Melka Olba School in Ethopia

The Frederick County Career and Technology Center InvenTeam invented a system to remove unsafe sulfur dioxide and fluoride present in drinking water from an existing borehole at the Melka Olba School in Ethiopia. The system consists of a rocket stove, integrated boiler with heat sink fins, and a condenser. The system can vaporize one gallon of water in 13 minutes. The vapor runs through a condenser coil placed in an existing cistern filled with river water to produce safe, drinkable water. The cost of the rocket stove, boiler, and condenser coil system is approximately $300. Most of the system is made of plate steel due to its durability. The steel plate is relatively low cost and available in Ethiopia. The entire system is designed to be maintained with a wrench, screwdriver, and hammer.

Recent Team Blogs

February 27, 2018
Our team has been working very hard on the efficency of our design. We recently recieved our second version of our rocket stove and now consistently reach 1000 degrees. The full system has been assembled and is in the testing stage. We have submitted our new boiler to be welded this week as well...
December 14, 2017
We held a meeting to test our rocket stove on December 10th. The test went very well and we gathered lots of information about our design. The amount of fuel and temperature were monitored throughout the test. Our team was also just reconized by the Frederick County Board of Education on December...
November 21, 2017
Many things have happened since the start of the grant cycle. Our team has met with the Rotary Club of Frederick and the Frederick County government. Our first prototype rocket stove has been finished and we are begining testing. The boiler drawings are finished and have been sent to be welded by...