Abstract

Marwah H. Abdulateef, Faihaa F. Hadi, Ahmed Hatem Alwan, Ahmed Najem Abd

The aim of presented study is to treatment of sewage water in chemistry department – college of science in Diyala University which is located in the north east of Baghdad City in Iraq using local Attapulgite clays before disposing them into the environment. This study includes the use of Attapulgite clays to decrease the proportions of heavy metals ions; (Cr, Co, Cd, Cu, Mn), and the proportions of Suspended Solids (SS) in sewage water. Besides recycling the sewage water after treatment and to minimize the environmental risks of this contaminated water and creating new industrial uses for Iraqi clays. To achieve this goal, experiments were conducted on sewage water to determine the lowest concentration and best time for processing to state the efficiency of clay in the sewage water treatment which consists of high contents of heavy metals and SS.
Laboratory tests proved the efficiency of local Attapulgite clays in treating sewage water from contaminants. Those clays were so affective in this treatment and in decreasing the concentration of heavy elements, under study, to less proportions from those existing before the treatment. It is noticed that the concentration of Chrome (Cr) decreased from 4 ppm before the treatment to 0.89 ppm after treatment. Besides, the decrease of the concentration of Cobalt (Co) from 8 ppm before the treatment to 0.32 ppm. While the concentration of Cadmium (Cd) decreased from 1.48ppm before treatment to 0.0025ppm. Copper (Cu) decreased from 7ppm before treatment to 0.25ppm. In addition, the concentration of Manganese (Mn) which decreased from 3ppm before treatment to 0.05 ppm after treatment.
The present experiments proved the efficiency of the local Attapulgite clays in sewage water treatment.