Evaluating the Effects of Alum with Polyelectrolyte Coagulant Aids in Treatment of Low Turbidity Waters
Date of Award
Master of Science (MS)
Civil & Environmental Engineering
H. G. Rao
William A. Drewry
Call Number for Print
Special Collections LD4331.E54S86
Potable water sources usually require treatment for removal of suspended organic and inorganic particles. Conventional treatment processes incorporate chemical coagulants for removal of these suspended particles. Alum is a widely used coagulant that can provide adequate removals of turbidity. However, high alum dosages are required for treatment of low turbidity waters producing a voluminous sludge that is difficult to dewater.
Recent Federal regulations have limited disposal options for chemical sludges. This has prompted a reevaluation of coagulants and their dosages with the goal of reducing the amount of sludge produced and improving the sludge handling characteristics necessary for ultimate disposal.
This study was conducted with surface water samples from the Lee Hall reservoir in Newport News, Virginia. Laboratory jar test procedures, which simulated flow conditions at the Lee Hall Water Treatment Facility, were carried out using alum as a primary coagulant, and a variety of polyelectrolytes as coagulant aids.
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Stockwell, Kenneth J..
"Evaluating the Effects of Alum with Polyelectrolyte Coagulant Aids in Treatment of Low Turbidity Waters"
(1983). Master of Science (MS), Thesis, Civil & Environmental Engineering, Old Dominion University, DOI: 10.25777/rkb0-gd83