Filtration Through Precipitation
Henry Xi, Yian Zhang
Burnaby North Secondary
Floor Location : M 095 V

Our global waters are being contaminated every single day, with over 780 million people denied access to an improved water source and an estimated 2.5 billion people who lack access to improved sanitation. The current removal methods for soluble toxins such as phosphorus, chlorine, arsenic, etc. are simply not pragmatic, inefficient, and most importantly, unaffordable. We are proposing a novel technique of filtration through the process of ion precipitation, where people are able to use substances that are commonly available to efficiently bind and precipitate toxins out of water. Our project is mainly focused around the toxins phosphorus and chlorine due to its presence in our local environment in British Columbia. We use compounds such as iron⁽ᴵᴵ ᴵᴵᴵ⁾ oxide and calcium hydroxide to bind and precipitate said toxins out of solution. The reactants rearrange themselves into larger or more benign molecules, which are significantly easier to filter out using less advanced filtration systems. The goal of this project is to increase the efficacy of water treatment, make it affordable as well as effective. We have concluded that the ion precipitation method is extremely effective in the removal of toxins, and believe that it can be globalized to fulfill both personal and industrial needs.