Kaldnes™
AnoxKaldnes April 2009
AnoxKaldnes™ MBBR Technology
Highlights• Compactdesign,demandsverylittlefootprint• Easytocarefor• Flexible–differentreactordesignsaswellas
existingtankscanbeused• Efficient• Robustandstableevenatbigloadingvariations• Tolerantagainstdisturbancies• Noriskforclogging• Futureexpansionpossiblebyincreasingthefill-
ingdegreeofcarriers• Usefulformanydifferentapplications;inoneor
multiplesteps
Applicationsfortreatmentof municipalwastewater:
• BOD-removal• Nitrification• Pre-denitrification• Post-denitrification
The KaldnesTM biofilm processThefirstKaldnes™biofilmprocessformunicipalwastewatertreatmentwasputintooperationinNorwayintheearly1990s.Today,withmorethan200municipalinstallations,theKaldnes™processisoneofthemostwelldocumentedbiologicalsolutionsfortreatmentofmunicipalwastewater.BasedonAnoxKaldnesveryflexibleandversatileMBBRtech-nology,theKaldnes™biofilmprocesscanbedesignedfordifferentmunicipalapplicationsandlevelsoftreatment.Asforexample,BODremovalcanbeachievedinasimplehigh-rateKaldnes™processinoneortwostages,whilefarreachingnitrogenremovalcanbeperformedinmulti-reactorsystemscomprisingstagesforpre-denitrification,BOD-remov-al,nitrificationandpost-denitrification.UtilizationofdifferentMBBRswithspecializedandhighlyactivemicro-organismsisthekeytothehighefficiencyandcompactnessoftheKaldnes™process.AstheKaldnes™biofilmprocessisoperatedwithoutsludgerecycle,onlyexcessbiomassformedintheprocesshastobeseparatedinthefollowingseparationunit.ThismeansthechoiceofseparationisveryflexibleandcompactunitssuchasActiflo™ordissolvedairflotationcanbeusedtocreateatotallyverycompactplant.
AnoxKaldnesKlosterängsvägen11ASE-22647Lund,SwedenTel.+4646-182200Fax.+4646-133201
AnoxKaldnes April 2009
Kaldnes™ BOD-removal process
Kaldnes™ BOD-removal and nitrification process
Kaldnes™ pre-denitrification process
Carbon source
Kaldnes™ post-denitrification process
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