Dissolved Oxygen Processes
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Transcript of Dissolved Oxygen Processes
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WASP7 Course
Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
Dissolved Oxygen ProcessesDissolved Oxygen Processes
Processes and EquationsProcesses and Equations
Implemented in WASP7Implemented in WASP7Eutrophication ModuleEutrophication Module
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Eutrophication DO InteractionsEutrophication DO Interactions
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
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ReaereationReaereation
CBODCBOD11
CBODCBOD22
CBODCBOD33
PhytoplanktonPhytoplankton PeriphytonPeriphyton
DissolvedDissolved
OxyenOxyen
Sedi!entSedi!ent
OxyenOxyen
De!andDe!and
DetritusDetritusDeathDeath
D
issolution
Dissolution
Photosynthesis and RespirationPhotosynthesis and Respiration
Orani" De"ayOrani" De"ay
DO !alance ProcessesDO !alance Processes
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
StreeterPhelps "ith SODStreeterPhelps "ith SOD
DODO BODBOD11
COCO22
ReaerationReaeration
Settling and Deposition ofSettling and Deposition ofOrganic MatterOrganic Matter
Sediment OxygenSediment Oxygen
DemandDemand
CarbonaceousCarbonaceous
DeoxygenationDeoxygenation
Sediment
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
DetritusDetritus
#!OD$
#!OD%
#!OD&
!oundaries ' (oads
Phytoplan)ton
Death * #ar+on #ontent
Periphyton
Death * #ar+on #ontent
,raction * Detritus Dissolution
Sour"esSour"es SinksSinks
#ser Spe"i$ies
#ser Spe"i$ies
%odel Cal"ulated%odel Cal"ulated
Dissolution & Dissolution Rate ' (heta '' (e!p ) 2*Dissolution & Dissolution Rate ' (heta '' (e!p ) 2* ++
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
Sources ' Sin)sSources ' Sin)s
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WASP7 Course
!OD in WASP!OD in WASP
- !est to convert !OD to .ltimate !OD!est to convert !OD to .ltimate !OD
/alues/alues
-0hree !OD #lasses0hree !OD #lasses1 ,ast2 Medium2 Slo" 3(a+ile to 4e5ractory6
1 !iotic 3Algae!enthic Algae62 A+iotic2 WW0P
1 /arying Decay2 , 4atios +ased on Sources
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BOD1BOD1
BOD2BOD2
BOD3BOD3
Phytoplan)tonPhytoplan)tonDeath * #ar+on #ontentDeath * #ar+on #ontent
PeriphytonPeriphyton
Death * #ar+on #ontentDeath * #ar+on #ontent
!oundaries ' (oads!oundaries ' (oads
DODO
!OD Decay * 0heta **!OD Decay * 0heta **0%80%8
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#!OD#!OD
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
Model Parameters 5or !ODModel Parameters 5or !OD
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
Sediment Oxygen DemandSediment Oxygen Demand
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
WASP7 Course
Simulated SODSimulated SOD
G1
G2
G3
DissolvedParticulate
Reaction Products
DissolvedParticulate
Reaction Products
Dissolved
ConstituentParticulate
Organic Matter
Products
ProductsReactions
Surface
Exchange
Sedimentation
Diagenesis
Sedimentation
Sedimentation
Reactions
Mixing Diffusion
Net
Settling
Layer2
Layer1
aterColumn
G1
G2
G3
DissolvedParticulate
Reaction Products
DissolvedParticulate
Reaction Products
Dissolved
Constituent
Dissolved
ConstituentParticulate
Organic Matter
Particulate
Organic Matter
ProductsProducts
ProductsProductsReactions
Surface
Exchange
Sedimentation
Diagenesis
Sedimentation
Sedimentation
Reactions
Mixing Diffusion
Net
Settling
Layer2
Layer1
aterColumn
Layer2
Layer1
aterColumn
h d li d li h i lW h d & W Q li M d li T h i l S C
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4eaeration4eaeration
W h d & W Q li M d li T h i l S CW t h d & W t Q lit M d li T h i l S t C t
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4eaeration Options4eaeration Options
- 9lo+al 4eaeration9lo+al 4eaeration
- Segment Speci5ic 4eaerationSegment Speci5ic 4eaeration
- .ser De5ined.ser De5ined1 .ser Selections
- #ovar:s Method#ovar:s Method
- Dam 4eaerationDam 4eaeration
This options sets the rate for the whole networkser !pecifies which "#uation!etting to $ero %&!P !elects
This !ets Rate for !eg'ent!pecif( Da' Characteristics
W t h d & W t Q lit M d li T h i l S t C tW t h d & W t Q lit M d li T h i l S t C t
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4eaeration Options4eaeration Options
- 4ivers ' Streams4ivers ' Streams
1 O:#onnorDo++ins
1 #hurchill
1 O"ens
)*+
1*+3*,3a
Uk
H=
1*-.+*)2-a
Uk
H=
)*-.
1*/++*32a
Uk
H=
! "mps#
$ "m#
%a "per day#
W t h d & W t Q lit M d li T h i l S t C tW t h d & W t Q lit M d li T h i l S t C t
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4eaeration #oe55icients4eaeration #oe55icients
W t h d & W t Q lit M d li T h i l S t C tWatershed & Water Q alit Modeling Technical S pport Center
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Dam 4eaerationDam 4eaeration
0)-*)1011*)13/*)1 THabHr ++=
Where;
r < ratio o5 de5icit a+ove and +elo" the dam
= < di55erence in "ater elevation 3meters60 < "ater temperature 3>#6
a < "ater quality coe55icient
+ < damtype coe55icient
3#hapra2 $??76
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Dam 4eaerationDam 4eaeration
Polluted StatePolluted State AA
9ross9ross 8@B8@B
ModerateModerate $@8$@8
SlightSlight $@$@
#lean#lean $@C$@C
Water uality #oe55icient
Dam 0ypeDam 0ype ++
,lat +roadcrested regular step,lat +roadcrested regular step 8@788@78
,lat +roadcrested irregular step,lat +roadcrested irregular step 8@C88@C8
,lat +roadcrested vertical 5ace,lat +roadcrested vertical 5ace 8@88@8
,lat +roadcrested straightslope 5ace,lat +roadcrested straightslope 5ace 8@7B8@7B
,lat +roadcrested curved 5ace,lat +roadcrested curved 5ace 8@B8@B
4ound +roadcrested curved 5ace4ound +roadcrested curved 5ace 8@7B8@7B
Sharpcrested straight slope 5aceSharpcrested straight slope 5ace $@88$@88
Sharp crested vertical 5aceSharp crested vertical 5ace 8@C88@C8Sluice gatesSluice gates 8@8B8@8B
Dam 0ype #oe55icients
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Wind Driven 4eaerationWind Driven 4eaeration
1& Meters 'bo(e1& Meters 'bo(eater Surfaceater Surface
ind Speed m)sec "*ime +unction#ind Speed m)sec "*ime +unction#
'ir *emperature'ir *emperature ,C "*ime +unction#,C "*ime +unction#
ater *emperatureater *emperature ,C "Segment -arameter and)or *ime +unction#,C "Segment -arameter and)or *ime +unction#Simulated by $ydrodynamic ModelSimulated by $ydrodynamic Model
.our/ of 0n( 0ng ol/ 1& 4O/3 --/5316572.our/ of 0n( 0ng ol/ 1& 4O/3 --/5316572
.une 183 'ut9or: D/./ O;Connor *
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Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
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Modi5ied StreeterPhelpsModi5ied StreeterPhelps
DODO CBODCBOD11
COCO22
ReaerationReaeration
SettlingSettling
Sediment OxygenSediment Oxygen
DemandDemand
CarbonaceousCarbonaceous
DeoxygenationDeoxygenation
Sediment
,BOD,BOD22
,O,O33
4itrogenous4itrogenous
DeoxygenationDeoxygenationSettlingSettling
1 use OD14 2 use OD2
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Fitrogenous !ODFitrogenous !OD
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Modi5ied StreeterPhelps InputModi5ied StreeterPhelps Input
Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center
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0emperature Dependency0emperature Dependency
2) 2)0
T
T
TK K
=
Where;Where;
GG00 0he value o5 varia+le at the local temperature2 0 30he value o5 varia+le at the local temperature2 0 3>#6>#6
0he value o5 the varia+le at %80he value o5 the varia+le at %8 >#>#
HH 0he empirical constant 5or each temperature dependent system0he empirical constant 5or each temperature dependent systemvaria+le2 user speci5iedvaria+le2 user speci5ied
2)
TK
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(inear DO !alance(inear DO !alance
DODO BODBOD11
COCO22
ReaerationReaeration
SettlingSettling
SedimentSedimentOxygenOxygenDemandDemand
CarbonaceousCarbonaceous DeoxygenationDeoxygenation
,-,-33
SettlingSettling
,O,O33
Or.,Or.,
PhytoPhyto-9otosynt9esis-9otosynt9esis
RespirationRespiration
4itrification4itrification
Minerali@ationMinerali@ation
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(inear DO !alance Input(inear DO !alance Input
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Measuring Photosynthesis ' 4espirationMeasuring Photosynthesis ' 4espiration