Evaluation the removal efficiency of sedimentation basins for one of the central water projects in Karbala city Available to Purchase

Presently water treatment plants are among of the most important infrastructure facilities for the sustainability of most service, agricultural and industrial development projects. Conducted rapid in it mixing operations are on it. furthermore, coagulation, flocculation then sedimentation, and finally, chlorination. consequently, pumped through networks to the consumers. The present study aims to evaluate the efficiency of sedimentation basin units in the old Safi water project located in the metropolis of Karbala on the Husseiniya River, one of the branches of the Euphrates River, where the amount of raw water entering it is 1300 m3/hr. and after conducted analytical calculations and compared them with the required design, the efficiency of removal of the sedimentation basin was founded to 62.29%, depending on turbidity of the raw and treated water. While it was designed to exceed 70% as the lowest percentage, and this is due to the quality of the alum, the accumulation of mud and the lack of continuous cleaning. In addition to that, the service over flow rate, (SOR=19.15 m3/day.m2), which is one of the most important design criteria, was less than the acceptable limits and also the detention time (6.26 hrs.) exceeded limit. In conclusion, it was required to add flowrate 1200 m3/hr for adjust the value of SOR and detention time to be them within the allowable design criteria.