Post on 29-May-2018
SYSTEM BENEFITS• The building has demonstrated a 75%
reductioninwateruse.• The system provides interior and exterior
foliage and safely integrates into publicspace.
• Accepts all wastewater generated by thebuilding’s 500 employees and produceshigh qualitywater that is reused to flushtoilets.
• TheLivingMachine®systemwascitedasakeyinnovativefeatureonForbes.com’slistoftheworld’sgreenestbuildings.
• The project attained a LEED Platinumcertification by the U.S. Green BuildingCouncil.
completion date 2010application municipal
system capacity 5,000 gpdreuse toilet flushing
CASE
STU
DYPort of Portland HeadquartersPortland,OR
LIVING MACHINE SYSTEMS, L3C
LivingMachine®Systems,L3C(LMS)-BasedinCharlottesville,Virginia-isasocialbenefitcorporation,focusedonensuringlastingwaterresourcesforcommunitiesacrosstheglobe.Ourprovenecologicalwastewatertreatmentandreusesystemiscompact,efficient,andcosteffective.FromGhanatoSanFranciscoandfromschoolsandofficetowerstoresorts,theLivingMachine®systemhasbeeninstalledindozensoflocationsaroundtheworld.
LMS and its predecessor, Living Technologies, Inc., have designed and refinedecological wastewater treatment systems since 1995.While constructedwetlandsandothernaturaltreatmenttechnologieshavebeensuccessfullyutilizedfordecades,today’s LivingMachine technology allows a radically smaller footprint and highertreatmentperformancerelativetoothernaturaltreatmentsystems.Incomparisonto conventional wastewater treatment technologies, the Living Machine systemoffersreducedenergyuseandsignificantsavingsinbothcapitalandlifecyclecostswhileachievingthehighesttreatmentandreusewaterqualitystandards.LMS designs beautiful, energy-efficient, high-performance wastewater treatmentsystemsthatfosterwaterreuseinrural,suburban,andurbanareas.
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WHY A LIVING MACHINE?The Port of Portland had multiple objectives for the wastewatersystemintheirnew200,000squarefootstate-of-the-artheadquartersbuilding.Ithadtobesustainable,cost-effective,attractive,aswellasateachingtool,butaboveall,ithadtoprovideadvancedwastewatertreatment for reuse. The Living Machine® system was the onlyapproachtowastewatertreatmentthatcouldmeetallthecriteria.
WETLAND DESIGN PARAMETERS
Tidal Wetland CellsParameters Values Units
CODLoading 110 gm-3d-1
TKNLoading 40 gm-3d-1
CycleFrequency 12 perday
OxygenRequirement 89 gm-3d-1
OxygenSupplied 106 gm-3cycle
OxygenSupplied 1278 gm-3d-1
Vertical Flow Wetland CellsParameters Values Units
CODLoading 25.5 gm-3d-1
TKNLoading 3.2 gm-3d-1
CycleFrequency - perday
OxygenRequirement 21 gm-3d-1
Interior Tidal Flow Wetland Cells
ARCHITECTURAL DETAIL• Fourofthetidalflowwetlandcellsareincorporatedintothelobbyofthebuilding
while the remaining two tidal flow cells and four vertical flow polishing cellsprovidealandscapefeaturethatwrapsaportionoftheexterior.
• Materials and plantings for both interior and exterior wetland cells werecoordinatedwith project architect andlandscape architects to achieve desiredlookforthebuilding.
• Drawingfromitssurroundings,thebuildingwasdesignedtogivetheimpressionofaship’shull,servingtodisguisetheintegratedparkingdeckforvisitorsandstaff.
Design Basis + Architectural Integration
PROJECT PARTNERSClient PortofPortlandArchitect ZGFArchitectsLandscape ArchitectReed/MayerGeneral ContractorHoffmanConstructionCompanyOperator iWaterServicesEngineering Partner AquaNovaEngineering
PROJECT OVERVIEWPortofPortlandchosetouniteitstwomainoffices(onepreviouslylocated in downtown Portland and the other near the airport),consolidatingthemintoasingle,unitedheadquarters.Early intheplanning stages, Architectural firm ZGF interviewed the Port ofPortlandstaffinanefforttounderstandtheirculture-informationwhichhelpedthemcreatetheirdesign.
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Site Plan
FEC
VFW
Zone 4
TFWCell 1
TFWCell 2
Entry
Interior Cells
Exterior Cells
TFWCell 6
TFWCell 3
TFWCell 4
Port of Portland HQ Lobby
Reuse Tank
ControlPanel
Polishing + DisinfectionEquipment
VFW
Zone 3
VFW
Zone 1
VFW
Zone 2
TFWCell 5
Aggregate loaded into wetland cells during final construction
Exterior Vertical Flow Wetland Cells
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INTERIOR PLANTS• Plantsspecificallychosenforlowlightconditionswithinthelobby.• Strikingfoliageandflowersforaestheticqualities.
Spathiphyllum cochlearispathum, Peace lily Colocasia esculenta, Taro
Aspidistra elatior, Cast Iron PlantStrelitzia reginae, Bird of Paradise
Juncus effusus, Soft Rush Acorus gramineus, Japanese Sweet Flag
Plant Community
EXTERIOR PLANTS• Floweringplantswerenotused, inordertoavoidattractingbirds inclose
proximitytotheairport.• Plantsarenativeornaturalizedspecies.
Interior Tidal Flow Cells With Mixed Plant Species
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Performance Summary - Port of Portland
TSS
mg/
l
0
140
280
420
560
700In�uent E� Primary
2010-2012
CO
D m
g/l
0
100
200
300
400
500
600
700
E� COD Inf COD
1/122/1111/109/107/105/102/10
2010-2012
1/122/1111/109/107/105/102/10
Performance Summary - Port of Portland
Nitr
ogen
mg/
l
0
25
50
75
100
125
150
175
200
E� NH3-N E� TKN Inf TKN
2010-2012
Turb
idity
NTU
0.0
2.5
5.0
7.5
10.0
Fecal ColiformsE� Turbidity
2010-2012
Feca
l Col
iform
s C
FU
2/111/1112/1011/1010/10 1/12
2/111/1112/1011/1010/10 1/12
Engineering Design and Performance Data
P E R F O R M A N C E Units (mg/l)
Influent Primary Effluent
BOD 600 209 1.0
TSS 400 93 2.6TKN 150 159 1.7
Turbidity (NTU)
- - 0.6
System OperationOregonWPCFPermitrequiresthefollowingminimummonitoringandrecording:
• Dailyflowreadings• Annualflowmetercalibration• Annualaveragedailyflow• Grab samples collected 3x/week for
totalcoliform• Grab samples collected 3x/week for
chlorineresidual
Performance MonitoringAdditionaldataparametersaremonitoredtoensureoptimalsystemperformanceduringthefirstfewmonths:
• TotalSuspendedSolids(TSS)• ChemicalOxygenDemand(COD)• Total Kjeldahl Nitrogen (TKN) and
Ammonia(NH3-N)• FecalColiforms• Turbidity
CO
D m
g/l
0
200
400
600
800
1000
1200
In�uent E�uentPrimary
2010-2012
1/122/1111/109/107/105/102/10
Performance Summary - Port of Portland
Nitr
ogen
mg/
l
0
25
50
75
100
125
150
175
200
E� NH3-N E� TKN Inf TKN
2010-2012
Turb
idity
NTU
0.0
2.5
5.0
7.5
10.0
Fecal ColiformsE� Turbidity
2010-2012
Feca
l Col
iform
s C
FU
2/111/1112/1011/1010/10 1/12
2/111/1112/1011/1010/10 1/12
ENGINEERING• WastewaterentersthePrimarySettlingTankwherelargersolids
settleout,scumfloatstothesurfaceandclarifiedliquidinthe“clearzone”flowsbygravitytotheFlowEqualizationTank.SolidsbreakdowninthePrimaryTankandthefineparticulatematerialanddissolvedorganicandinorganicmaterialpassesthroughthetanktobemetabolizedintheLivingMachinesystem.
• Stage 1 consists of 6 tidal flow wetland cells. The tidal-flowcells remove pollutants from the wastewater, using microbialcommunities attached to the surface of the wetland media(biofilms).Thebiofilmsoxidizeorganicmaterialandnitrogenouscompoundsinthewastewaterasitpassesoverthesurfaceofthemediaparticles.
• Stage2consistsofaseriesofvertical-flowwetlandcells.Thevertical-flow polishing cells remove any remaining organicmaterial,ammoniaandTSS.Thepolishingwetlandisashallowrecirculatingverticalflowwetland.Thewaterleavingthesecellsisverycleanandrequiresminimalfinaltreatment/disinfectionforre-use.
• Wastewater fromtheLivingMachine ispumped toacartridgefilterfollowedby2stagedisinfectionwithultraviolet(UV)lightandchlorinedisinfection.FilteringoftheeffluentisnecessarytoremovefineparticlesthatwillinhibitUVdisinfection.
• Online turbidity, UV transmissivity, and chlorine residualmonitoring assures that effluent reuse standards arecontinuouslybeingachieved.
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4860 Cox Rd.
Suite 120
Glen Allen, Virginia 230601
(804) 965 5590
Living Machine Process Diagram
Magnetic and ultrasonic flowmetersmonitor flow
Living Machine Control PanelWeb enabled panel allows remote operation and oversight
Stage 2Finer LESA media provides final treatment
Vertical Flow Cells 1-4Tidal Flow Cells 1 - 6
Underdrain systemAllows cells to drain quicklyallowing rapid cycling
Transition media Protects underdrain
Stage 1Coarse lightweight expand-ed shale (LESA) treatment media prevents clogging
Settling TankRemoval of coarse solids and floating material plus flow equalization
Reuse TankProvides water for toilet flushing
ORP SensorMonitors disinfection levels
Chlorine Tablet Feeder
UV
Cartridge Filter Online Turbidity Sensor
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