Abstract
The aim of the present study is to treat the industrials wastewater of Samarra drugs factory (SDF) by using oven dried alum sludge in fixed bed column with down flow, in performing the present study actual wastewater of (SDF) is taken to perform experimental work. It also involve studying the effect of bed depth [50, 60 and 70] cm, flow rate [2, 4 and 6] L/hr and particle size [2.8 and 5] mm. The dried alum sludge packed in Pyrex column with 2.8mm diameter and50cm bed depth then increased the bed depth to become 60 and 70cm with different flow rates[2,4and 6]L/hr for every bed depth ,then used 5mm particle size with 70cm bed depth at different flow rate. The samples were tested by using atomic adsorption apparatus type [shimadzu AA-6200]. The results indicated that the best removal percent of the pollutants [Ca, Zn, Fe, Cu, Cd and pb], at 2.8mm particle size diameter and 70cm bed depth with 2L/hr flow rate. Also the results indicated that the removal percent is directly proportional with bed depth and inversely proportional with flow rate and particle size, and the removal percent different from element to another.