ABSTRACT
Theuseofactivatedcarbonformunicipalwatertreatmentcontinuestogrow aswaterqualitystandardsareraisedandpollutedsourcesareincreasingly drawnon.Minordevelopmentsintechniquehavebeenintroducedinthe 1970s,principallyinregenerationfurnacedesign.Newresinousadsorbents havebeendevelopedforremovingawiderangeoforganics,butthesearenot atpresentcompetitivewithcarbonforpotablewatertreatment,particularly becauseoftheproblemsassociatedwithliquidregenerants.Thehigh organicsremovalperformanceofreverseosmosishasbeendemonstratedbut itremainsprohibitivelyexpensive,whiletherelatedprocessofultrafiltration ischeaperbuteffectiveonlyforremovingthelargerorganicspecies.Itis concludedthatactivatedcarbonadsorptionistheprocessofchoiceformany dutiesfromtasteandodourremovaltothegeneralreductionofsynthetic organics.Ionexchangeresinswillcontinuetobeusedfortheremovalof naturallyoccurringorganicacidsintheproductionofdeionisedwater.
