THE TREATMENT OF SALICYLIC ACID MANUFACTURING WASTEWATER BY HYPERCROSSLINKED POLYMERIC ADSORBENT(NDA—100)

(整期优先)网络出版时间:2002-01-11
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ThetreatmentofsalicylicacidmanufacturingwastewaterbyNDA-100resinwasinvestigated.ThesorptionintensityofphenolwasfoundtobestronglydependentonpHoftheaqueousphase.EquilibriumadsorptiondatafittobothLangmuirandFreundlichmodels.ThecolumnadsorptionshowedthatthisprocesswassuitableforthetreatmentofsalicylicacidmanufacturingwastewaterAbout99.9%CODcrremovalwasobtainedundertheoptimaloperatingconditions.Theresincouldbecompletelyregeneratedwith1BV8%(w/w)NaOH+2BVH2O,therecoveryof98.9%ofthesubstancewasreached.Thisprocessmakesitpossibletorecoverthevaluablematerialfromthewastewaterandtoimprovetheeffluentwaterquality.