introduction to eutrophication module

Introduction to WASP7 Introduction to WASP7 Eutrophication ModuleEutrophication Module

Overview of Variables and Overview of Variables and Processes Implemented in Processes Implemented in

WASP7 Eutrophication ModuleWASP7 Eutrophication Module

Watershed & Water Quality Modeling Technical Support CenterWatershed & Water Quality Modeling Technical Support Center

Good Reference MaterialsGood Reference Materials

• Rates, Constants, and KineticsRates, Constants, and Kinetics– http://www.epa.gov/ORD/WebPubs/surfaceH2O/surfac

e.html

• Steve ChapraSteve Chapra– Surface Water Quality Modeling

• James MartinJames Martin– Hydrodynamics and Transport for Water Quality

Modeling

• Thomann and MuellerThomann and Mueller– Principles of Surface Water: Quality Modeling

and Control


WASP7 State VariablesWASP7 State Variables

• AmmoniaAmmonia• NitrateNitrate

• OrthophosphateOrthophosphate

• Dissolved OxygenDissolved Oxygen

• SalinitySalinity

• PhytoplanktonPhytoplankton• PeriphytonPeriphyton

• Particulate DetritusParticulate Detritus– Carbon– Nitrogen– Phosphorus

• Dissolved Organic MatterDissolved Organic Matter– CBOD (1)– CBOD (2)– CBOD (3)– DON– DOP


Eutrophication DiagramEutrophication Diagram


Processes ConsideredProcesses Considered

• Phytoplankton KineticsPhytoplankton Kinetics

• Periphyton KineticsPeriphyton Kinetics

• Phosphorus CyclingPhosphorus Cycling

• Nitrogen CyclingNitrogen Cycling

• Dissolved Oxygen BalanceDissolved Oxygen Balance

• Sediment DiagenesisSediment Diagenesis


Name 1 2 3 4 5 6

Ammonia x x x x xNitrate x x x xInorganic Phosphorus x x xPhytoplankton Carbon x x xPeriphyton Carbon xCarbonaceous BOD x x x x x xDissolved Oxygen x x x x x xOrganic Nitrogen x x x xOrganic Phosphorus x x xSediment Diagenesis x x

Level of Complexity

Level Description

1 Streeter-Phelps DO/BOD and Descriptive SOD

2 Modified Streeter-Phelps with NBOD

3 Linear DO Balance with Nitrification

4 Simple Eutrophication with Descriptive SOD

5 Intermediate Eutrophication with Sediment Diagenesis

6 Advanced Eutrophication with Sediment Diagenesis and Periphyton

Levels of Complexity in Implementing Levels of Complexity in Implementing WASP7 Eutrophication ModelWASP7 Eutrophication Model

introduction to eutrophication module

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