Industrial Symbiosis Cases

EXPLORINGSYNERGIESININDUSTRYANDENVIRONMENT

Industrial symbiosis can help businesses in a mutually beneficial way. Learn its benefits and its impact on the environment.

ound-breakingapproachto evelopment,whereone er,materials–become moreotherbusinessesIS captureeconomicvaluefrom reducingclimateimpacts Industrial biosis?

Forenthusiasts,students,professionals,andanyonekeenonsustainability andindustrialsymbiosis,thistoolisinvaluable.Itsimplifiesthelearning process,makingitquickandeasytoabsorbinformationonhowdifferent regionscontributetoamoresustainableworldthroughinnovativeresource management

Byshowcasingtheseexamples,andlearningfromother,theguideaimsto inspire,inform,andencouragefurtherexplorationintosustainablepractices thatcanbeadaptedandimplementedworldwide

Belowisashortvideoshowcasingoneofthemostsuccessfulcasesof IndustrialSymbiosisbasedoutofKalundborg,Denmark. 04

Pasco Water Reuse Facility

Washington

METHANECAPTURE,

HOWTHEYGOTSTARTED

TheCityofPasco,WA,embarkedonanambitiousprojecttomodernizeandexpanditsProcessWater ReuseFacility,demonstratinganinnovativeapproachtoindustrialsymbiosisThisinitiativeaimedto tacklechallengesposedbyaginginfrastructure,systeminefficiencies,andtheincreasingdemandsof thefoodprocessingindustry.Withatotalinvestmentof$137million,theprojectsetouttotreat2 billiongallonsperyearofindustrialwastewaterfromsevenmajorfoodprocessors,transforming wasteintovaluableresourceswhilesupportingeconomicgrowthandsustainability.

STARTANDEXPANSION

In2023,Pascoinitiatedasignificantmodernizationandexpansionofitswastewatertreatment facilityTheprojectwasdesignedtoaddressthefacility'sincapacitytohandleprojectedincreasesin nitrogenloadsresultingfromthegrowthofthefoodprocessingindustry.Recognizingthelimitations oftraditionalsolutions,PascoPublicWorksinnovatedasymbioticnetworkofsolutionstoextract valuefromwaste,reducefossilfuelreliance,andfacilitatethecreationofhundredsofjobs.

METHANECAPTUREFORRENEWABLENATURALGAS

ByintroducingLowRateAnaerobicDigesters,thefacilitycapturesmethanegasfromfood processingwastewater.Thisgasisthenconvertedintorenewablenaturalgas,providinga sustainableenergysource

Closeto1.5billiongallonsperyearofpre-treatedwater, containingsomenitrogen,isutilizedforcropirrigation. Thispracticereducestheneedforsyntheticfertilizers, benefitingfarmersandtheenvironmentalike

Abiological,low-energynitrogenremovalsystem employsalgae,whichnotonlycleansthewaterbut alsoresultsintheproductionofanalgae-based fertilizer Thismarketableproductoffersan innovativesolutiontonutrientmanagement.

INTERESTINGFACT

Theprojecthasledtothecreationofover300full-timejobsduetothefacility'syear-roundcapacity forfoodprocessing,inadditiontoconstructionjobsThissignificantjobcreationunderscoresthe project'sroleinbolsteringthelocaleconomywhileadvancingsustainablepractices.

CONTINUOUSMANAGEMENT

ThemanagementofthePascoProcessWaterReuseFacilityinvolvesongoingeffortstoenhance efficiency,reduceenergydemand,andexplorenewavenuesforwaste-to-valueconversion.Thecity's commitmenttodataanalysis,collaborativeinnovation,andattractingfundingshowcasesaproactive approachtomanagingandexpandingtheproject'ssustainabilityimpacts

Solrod Biogas Denmark

WASTESTREAMRECYCLING FERTILIZER

HOWTHEYGOTSTARTED

Thisprojectemergedfromanefforttoutilizedecayingseaweedthatwasheduponlocalbeaches,andwas creatinganuisanceodorforresidentsandtourists.Thesolutionidentifiedbystakeholderswastogenerate biogasusingtheseaweedasfeedstock Thesuccessfulexperimentpromptedfurtherconsiderationofother existingresources TodaySolrødBiogas,ownedinpartbythemunicipalityofSolrød,utilizesthefollowingas wasteinputtosymbioticallygenerateheat,power,andfertilizer:1,500tonsofseaweedfromthebeach,90,000 tonnesoforganicresidualproductfromCPKelco,70,000tonsoforganicresiduefromChr.Hansen,44,500 tonsofanimalmanureand20,000tonnesofotherindustrialwasteproducts

HOWMUCHENERGY?

Thebiomassismadeupbybiologicalresidualproducts,seaweedandalgalsludgeremovedfrombeaches aswellaslivestockmanurefromadjacentfarms.Thebiomassisusedprimarilyfortheproductionofheat andelectricitytoreplacefossilfuelinputs,including18millionm3ofbiogas,whichisapproximately equivalentto11millionm3ofmethane.Thiscanprovideheatforaround4,000householdsandgenerate electricityforapproximately5,400households Additionally,thereisasupplyof220,000tonnesof biofertilizerforagriculturaluse Thebiofertilizerisofhighquality,richinorganicmatter,essential nutrients,andbeneficialmicrobialactivity,makingitsuitableforpromotingsoilfertilityandsupporting plantgrowth.

WASTETOENERGY

Themainconstituentsofrawbiogasisabouttwo-thirdsmethaneandonethirdcarbondioxide.Theycan beutiliseddirectlyasfuelin,forinstance,agasgeneratortogenerateelectricity.Gasgeneratorsneed cooling,aprocessthatproducesheatedcoolingwater.Aheatexchangertransferstheheatofthecooling watertowater,whichcanbeusedasdistrictheatingtohouseholdsandofficesorforindustrial production

CARBONREDUCTION

TheproductionofheatbasedonbiogasfromSolrødBiogascorrespondstoapprox.41%of theheatconsumptioninthemunicipalityorapprox.4,000households'heat consumptionByreplacingfossilfuelswithbiogas,theSolrødBiogasfacilitysignificantly reducescarbonemissions ThefacilityhelpssavethousandsoftonsofCO2annually, contributingtoDenmark'sambitiousclimategoals. Thebiomassfromtheanaerobicdigesters,aswellascondensatefrom thegascleaningprocess,areusedtomakeasustainablyproduced fertilizerforfarmerstouse.SolrødBiogassuppliesmorethan200,000 tonnesofbiofertilizertoagricultureeachyear.Inthisway,nutrients fromtheindustryarerecirculated,whichwouldotherwisehavebeen

FERTILIZERPRODUCTIONANDDISTRIBUTION

PHOTO:SOLRODBIOGAS PHOTO:SOLRODBIOGAS

PHOTO:SOLRODBIOGAS

TRANSPORTATIONANDHANDLING:

Residualproductslikefoodindustryleftovers,seaweedfromKøgeBay,andlivestockmanureare transportedintankersandcontainerstotheplant.Uponarrival,allloadsareweighedandstored temporarily.

BIOGASPRODUCTION:

Liquidbiomassisheatedandpumpedintodigesters,whilesolidbiomassisautomaticallyloaded.The generatedbiogasispurifiedandstoredfordistribution.

DISTRIBUTIONANDRECYCLING

Afterpurification,biogasisdistributedforelectricityandheatproduction.Degassedbiomassisstored andtransportedbacktofarmsforuseasfertilizer.

LEACHINGREDUCTION

Theyreducetheleachingofnutrientslikenitrogenfrommanureandfertilizerinto theaquaticenvironment,preventingnutrientaccumulationinwaterbodiesBy preventingexcessivenutrientinflux,thisapproachcurbsalgaegrowththatcan depleteoxygenlevelsinwater,potentiallyleadingtodeadzonesbothinthewater columnandatthebottom.

PHOTO:SOLRODBIOGAS