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

June 20, 2019
After demonstrating our invention to the community and turning over the system to the water authority we traveled back to Addis Ababa for three days before heading home.  The team experienced the cultural of Ethiopia through food, dance, visiting museums, and visiting the United Nations...
June 20, 2019
Tuesday, June 11th: Four team members presented the invention background to the local water authority in Adama.  After the presentation, the water authority came to the site of the borehole to witness the invention in action.  The CAD students turned over the invention to the water...
June 20, 2019
Monday, June 10th: The team visited the future site of the Melka Olba School as it will be relocated this fall.  The team visited with the builders laying foundations and also tested the area for clay content in hopes to build a retention pond to collect water.  Back at the borehole,...
June 20, 2019
Sunday, June 9th: The rift valley had flash floods so we were unable to work at the school in the morning.  After the rains concluded, we visited the school to continue our work.  The team finished assembling the condenser.
June 20, 2019
On Saturday, June 8th the team assembled the rocket stove, measured the temperatures it could produce in a time period, and adjusted the airflow for maximum output.  The team also tested the borehole water and assembled the condenser.
June 20, 2019
We commuted to the school for 5 days with the goal of implementing the invention and getting to know the surrounding areas and community.
June 11, 2019
  On 6/8 we visited the Melka Olba School and were welcomed warmly by students and staff.  We visited the borehole and compiled a plan to implement our invention.
June 7, 2019
On 6/6/19, the students gave their presentation to the local Rotary club in Addis Ababa.  We are grateful for the opportunity to present to these supportive Rotarians.
June 6, 2019
Yesterday the team visited the Ethiopian Museum of Natural History, shared a traditional meal with a local family and visited BeNu, a start up nutrition company.  Photo is from the last visit of the day to Blue Space, a start-up incubator company.
June 6, 2019
On June 4th, the team arrived in Addis Ababa.  We have visited the city and have been experiencing the culture.  We look forward to visiting the Melka Olba school tomorrow to start implementing the invention.
May 24, 2019
On 5/22/19 we attended the Rotary Club of Frederick meeting as a send off to our students as we prepare to travel.  Thank you Rotary for designing and donating shirts to our team members!
May 14, 2019
Since EurekaFest 2018, our team has done a great deal more research, refined our design, and have gained enough support to be able to travel to Ethiopia. We will travel to Ethiopia on June 3rd, and last night was a very productive meeting in preparation for the trip. Jo Butler, our main contact...
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...