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Controlling trace organic contaminants with GAC adsorption
The adsorption of trace organic contaminants by granular activated carbon (GAC) was assessed relative to the control of taste and odor (T&O) compounds and disinfection by‐product (DBP) precursor removal. Adsorbers operated for the control of T&O and DBP precursors were shown to yield good to excellent removal of 17 trace organic contaminant probe compounds. Increasing influent concentration of the trace organic contaminant in the parts‐per‐billion level was shown not to affect compound breakthrough on a normalized basis; however, higher influent concentrations did lead to earlier breakthrough on a mass concentration basis. Increasing background dissolved organic matter concentration increased competition for a fixed number of adsorption sites and led to earlier breakthrough. Optimal empty bed contact time depended on the specific treatment objectives and the contaminant removal level needed to meet those objectives. Series and parallel adsorber operation was calculated to yield a twofold decrease in the GAC use rate.
Controlling trace organic contaminants with GAC adsorption
The adsorption of trace organic contaminants by granular activated carbon (GAC) was assessed relative to the control of taste and odor (T&O) compounds and disinfection by‐product (DBP) precursor removal. Adsorbers operated for the control of T&O and DBP precursors were shown to yield good to excellent removal of 17 trace organic contaminant probe compounds. Increasing influent concentration of the trace organic contaminant in the parts‐per‐billion level was shown not to affect compound breakthrough on a normalized basis; however, higher influent concentrations did lead to earlier breakthrough on a mass concentration basis. Increasing background dissolved organic matter concentration increased competition for a fixed number of adsorption sites and led to earlier breakthrough. Optimal empty bed contact time depended on the specific treatment objectives and the contaminant removal level needed to meet those objectives. Series and parallel adsorber operation was calculated to yield a twofold decrease in the GAC use rate.
Controlling trace organic contaminants with GAC adsorption
Corwin, Christopher J. (Autor:in) / Summers, R. Scott (Autor:in)
Journal ‐ American Water Works Association ; 104 ; E36-E47
01.01.2012
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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