DESIGN, CONSTRUCTION AND TESTING OF LOW FLUSH TOILETS

Abstract:

Our project entitled us to design a low flush toilet system to reduce the water consumption when flushing. When starting this project our main objective was to design such a system that consumed as less clean water as possible. We went about this by coming up with three concepts however picking one that suited our objectives the best.  We therefore went forward with a system whereby the fresh clean water from the in the toilet tank was replaced as much as possible with water from the sink hence preserving clean water. However, we discovered that the sink water on its own was not enough to fill up the tank hence made it essential for us to combine the use of fresh clean water and water from the sink to be utilized in the toilet tank. We went ahead by connecting a direct water line from the sink to the toilet tank with a gate-valve always open joining a T-junction with the other end controlled by another gate-valve which can be regulated accordingly to allow entry of clean water. Two tanks were connected in between the sink and the toilet tank to act as reservoir tanks with a purpose to store water in them when excess from the sink. Our initial plan was to put in place one reservoir tank but realized water from the sink had to be filtered as solid dirt from the sink can clog the pipes and the toilet tank. After the system was done, we tested it and discovered we could save a minimum of 1 liter per flush of clean water. This was after discovering that an average human consumes close to 1 liter while washing their hands in the sink. This project was a successful venture as we developed a system which worked and can be used in existing homes as no changes in the toilet tank are needed. This system can be connected in between the toilet tank and clean water supply and can be used immediately after installation. This concept can further be implemented for use in shower systems whereby water from showers can be used to fill up the water tank. We were able to design, fabricate and test our concept successfully.