Dissolved Oxygen Processes

7/18/2019 Dissolved Oxygen Processes

1/27

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


2/27


WASP7 Course

Eutrophication DO InteractionsEutrophication DO Interactions


3/27


WASP7 Course

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


4/27


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


5/27


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* ++


6/27


WASP7 Course

Sources ' Sin)sSources ' Sin)s


7/27


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


8/27


WASP7 Course

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


9/27


WASP7 Course

#!OD#!OD


10/27


WASP7 Course

Model Parameters 5or !ODModel Parameters 5or !OD


11/27


WASP7 Course

Sediment Oxygen DemandSediment Oxygen Demand


12/27


WASP7 Course

Simulated SODSimulated SOD

G1

G2

G3

DissolvedParticulate

Reaction Products


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


Reaction Products


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


13/27


WASP7 Course

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


14/27


WASP7 Course

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


15/27


WASP7 Course

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


16/27


WASP7 Course

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


17/27


WASP7 Course

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



18/27


WASP7 Course

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



19/27


WASP7 Course

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 *


20/27


WASP7 Course



21/27


WASP7 Course

Modi5ied StreeterPhelpsModi5ied StreeterPhelps

DODO CBODCBOD11

COCO22


SettlingSettling

Sediment OxygenSediment Oxygen

DemandDemand

CarbonaceousCarbonaceous

DeoxygenationDeoxygenation

Sediment

,BOD,BOD22

,O,O33

4itrogenous4itrogenous

DeoxygenationDeoxygenationSettlingSettling

1 use OD14 2 use OD2



22/27


WASP7 Course

Fitrogenous !ODFitrogenous !OD



23/27


WASP7 Course

Modi5ied StreeterPhelps InputModi5ied StreeterPhelps Input



24/27


WASP7 Course

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



25/27


WASP7 Course

(inear DO !alance(inear DO !alance

DODO BODBOD11

COCO22


SettlingSettling

SedimentSedimentOxygenOxygenDemandDemand

CarbonaceousCarbonaceous DeoxygenationDeoxygenation

,-,-33

SettlingSettling

,O,O33

Or.,Or.,

PhytoPhyto-9otosynt9esis-9otosynt9esis

RespirationRespiration

4itrification4itrification

Minerali@ationMinerali@ation



26/27


WASP7 Course

(inear DO !alance Input(inear DO !alance Input



27/27


WASP7 Course

Measuring Photosynthesis ' 4espirationMeasuring Photosynthesis ' 4espiration

Dissolved Oxygen Processes

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