Evaluation of the use of local silica sand in filters for drinking water treatment

Lect. Dr. Arkan D. Jalal

College of Engineering / University of Anbar

 https://www.iasj.net/iasj?func=fulltext&aId=14174

 In this study, the properties of Iraqi silica sand were determined for purpose of using it in gravity-driven rapid sand filters. The properties include particle size, uniformity coefficient, particle shape, porosity, density, permanence, chemical content (silica), and solubility of silica in acid. It was found that the Iraqi silica sand has a high degree of chemical and mechanical stabilit

The laboratory model of the filter was designed and built, which consists of a filter column and a treated water collecting basin.  The results were recorded of treated water for turbidity, suspended solids and the potential number of bacteria.

The study showed the possibility of using Iraqi silica sand in drinking water treatment plants in filters. The results  showed that the rate of total removal efficiency when the water contained the rate of turbidity of water, suspended solids and the total bacterial number was 82.9%, 79.5%, respectively. While the rate of total removal efficiency when the water contained a sulphur rate of (58 9) NTU for each of turbidity, suspended solids and total bacterial count were (78.7%, 74.1%, respectively. But, the rate of total removal efficiency when the  water contained a turbidity rate of 28-35 NTU for the turbidity, suspended solids and total bacterial count were 72.6%, 72.7%, and 60.9%, respectively.