Flocculation For The Population
Claire Scrimini, Vanessa Scrimini
Burnaby North Secondary
Floor Location : M 119 V
Clean water is essential to life. However it is scarce in many third world countries including India and countries in Africa, forcing millions to resort to drinking water that is contaminated or unfit for human consumption. As a result, we have determined a viable solution: the use of coagulants in the flocculation process to remove water impurities such as colloidal particles. Flocculation is the process in which a coagulant is mixed into wastewater to enhance particle collision which leads to the formation of flocs. This is a necessary step before the filtration process as colloidal particles are microscopically insoluble substances in water and are not dense enough to settle on their own; henceforth needing coagulants and the flocculation process. The findings from this experiment could be life changing for many.
The hypothesis of the experiment is: that out of Aluminum Sulfate, Sodium Bentonite and Moringa Oleifera, the Moringa Oleifera seeds will be the most effective coagulant that will be most successful in neutralizing negative colloidal particles. The seeds are very common and easily accessible in third world countries. They contain antimicrobial properties which reduce and prevent the growth of microorganisms. As well, they help dissolve organic and inorganic matter. As a result reducing total dissolved solid levels (TDS).
Flocculation could be an at home solution to achieve clean drinking water and could potentially prevent life threatening diseases such as cholera, typhoid, and dysentery. Furthermore, women and girls who are responsible for getting water for the family would no longer have to trek miles on end everyday to access to clean water sources. Instead they could simply flocculate using coagulants at home, saving them hours. This would provide them with the opportunity and time to receive a proper education.
Turbid water along with unhealthy potential of hydrogen levels (pH) and high total dissolved solids can increase water impurities often leading to waterborne diseases and even death. Therefore, the most effective coagulant will be the one with the pH closest to neutral levels, the least amount of total dissolved solids as well as the most efficient turbidity removal.
After flocculating each simulated wastewater mixture (comprised of ½ tsp dirt, 1 tsp petroleum hydrocarbons and 60ml of copper, iron and steel and ⅛ tsp of a coagulant per beaker), tests had been conducted to determine the potential of hydrogen, total dissolved solids levels and turbidity removal. The tests had concluded that Moringa Oleifera had indeed been the most efficient, successfully removing the most total dissolved solids, having the most optimum potential of hydrogen levels and the second best removal of turbidity. In addition it will not be necessary for the consumers of this coagulated water to chemically alter the waters pH levels. Further experimentation in regards to this life changing experiment could be determining which filtration method is most ideal paired with Moringa Oleifera seed powder.
This experiment was carried out thoroughly and precisely resulting in a solution to wastewater consumption around the world.