![Sample our Economics, Finance,Business & Industry journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5931/TOC-Subject-Sample-2021-Economics-Finance-Business-Industry.jpg"})
Abstract
The feasibility of using ferric chloride in conjunction with a polymer for conditioning the Regina wastewater treatment plant sludge was examined. Specific resistance to filtration, capillary suction time, and time-to-filter were evaluated. Optimum dosages of ferric chloride, Percol 755 and Percol 757 were found to be 80.6, 2.9 and 2.7 kg/t of dry solids, respectively. Optimum dosing resulted in complete charge neutralization. Dual-chemical conditioning showed that a combination of 50% of optimum dosage of FeCl3 and 50% of optimum dosage of Percol 757 had the lowest CST, SRF and TTF values. A percentage of the optimum dosage of polymer could be replaced by a similar percentage of the optimum dosage of FeCl3 without adversely affecting the dewatering efficiency. A good correlation could be found between the CST and SRF data.