High TTHMs? Strip ‘em Away! Full-scale Demonstration of Two Aeration Strategies for Removal of TTHMs from Treated Water

摘要

1.Both surface and spray aeration lowered clearwellrnTTHM concentrations between 19 and 34 percentrn– Lower removal likely due to lower water temperaturern2.TTHM removal by aeration NOT EQUAL to overallrnTTHM reduction achieved within the clearwellrn3.Both mixer and active ventilation, by themselves,rnresulted in marginal reduction of TTHMs in thernclearwellrn4.Aeration, by itself, will not result in achieving sufficientrnTTHM reduction for Stage 2 DBPR compliance in thernOMT water systemrn5.Both field measurement instruments for TTHM analysisrnyielded results within ±10% of laboratory results