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1、PPhosphorusRecoveryTechniquesCONTENTSPARTONEIntroductionPARTTWOReservesSituationPARTTHREETechsforP-RecoveryPARTFOURDiscussion1PARTONEINTRODUCTIONINTRODUCTIONWhatisPhosphorus？Phosphorusisanonmetalofthenitrogengroupandisessentialforalllifeonourplanet.Phosphaterock/pho
2、sphoriteandaregeologicaldepositsofphosphateexistingallovertheworld:sedimentaryandigneousphosphaterockdeposits.Themajorityoftoday’sglobalphosphaterockproductionisusedinagriculturalproductsand/orapplications,mainlyinfertilizers(CisseandMrabet,2004).Cisse,L.,andMrabet,
3、T.(2004).Worldphosphateproduction:overviewandprospects.PhosphorusResearchBulletin,15,21–25.INTRODUCTIONDepletionofPhosphorusHowever,naturalPresources(phosphaterock)aredepleting.Andtheregulationsonthedischargeofphosphorushasbeenincreasinglystringent(Steen,1998).Thepo
4、tentialtechniquestorecoverphosphorusfromwastestreamsinviewofenhancingtheavailabilityneedstobeexplored.Existingfull-scaleP-recoverytechniquescanbedividedduetoitsfieldamongtheliquidphase,sludgephase,andsludgeash.Althoughthefull-scaleP-recoverytechniqueshavebeenshownto
5、betechnologicallyfeasible,theeconomicalfeasibility,legislationandnationalpoliciesarethemajorreasonswhythesetechniquesarenotyetoperationalworldwide.Steen,I.(1998).Phosphorusavailabilityin21stcentury:managementofanonrenewableresource.PhosphorusandPotassium,217,25–31.2
6、PARTTWORERESERVESSITUATIONRERESERVESSITUATIONAgriculturalApplicationsNon-AgriculturalApplicationsTheUtilizationofPhosphorusFertilizerindustryPesticidesAnimalfeessupplementsFoodindustryHouseholdapplicationsMetalsurfacetreatmentCorrosioninhibitionFlameretardantsMuller
7、,J.,Reinhardt,M.,G¬unther,L.,Dockhorn,T.,Dichtl,N.,Urban,I.,Weichgrebe,D.,Rosenwinkel,K.H.,Bayerle,N.,andVesterager,N.O.(2005).Fundamentalsandfeasibilityofnutrientrecyclingusingtheseaborneprocess.ConferenceontheManagementofResiduesEmanatingfromWaterandWastewaterTrea
8、tment,Johannesburg,South-Africa.RERESERVESSITUATIONMoroccoMostimportantProducerLow-levelconsumptionAsia(China)High-levelproductionExceedin
