| Experimental and Process design of a treatment system to remove Aluminium ions from lean sludge in an Egyptian water treatment plant |
| Paper ID : 1086-ICEE (R1) |
| Authors: |
|
Amr Abdelghany *1, Mohamed El Bouraie2, Nabil Abdelmonem3, mohamed hanafy3, Reham Samy3 1Chemical Engineering Department, Faculty of Engineering, Cairo University 2Central Laboratory for Environmental Quality Monitoring (CLEQM), National Water Research Center (NWRC), El Qanater, Egypt 3Chemical Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt |
| Abstract: |
| Aluminium ions traces in drinking water were found in El Khanka Water Treatment plant in Egypt because of the lean sludge generated from the using of Alum in water treatment. This research aims to study the feasibility of using natural clay such as “bentonite” known as montmorillonite clay and the combination of bentonite – cationic polymer as coagulants to remove aluminum salts from lean sludge. Experimental studies were performed to determine the effect of adding bentonite on the removal of aluminium ions from lean sludge based on variation of pH. 98.8% removal of Al ions was achieved at pH 11, and 0.6 ppm concentration of bentonite in the sludge solution. Kinetic model of pseudo-second-order was found to be the best to describe the reaction and the rate constant of 11.922 mol.-1 s-1 was calculated. An industrial process was suggested to the removal of Aluminium ions and brief economic estimate of applying it in Egypt was prepared as well. |
| Keywords: |
| Lean Sludge, Alum, Settling, Bentonite, Cationic Polymer. |
| Status : Paper Accepted |
