Eutrophication Modelling in Songkhla Lake

1
Eutrophication Modelling in Songkhla Lake
Supak Thienlikid EWA989776
2
Problem Description

• Eutrophication

• Songkhla Lake

• Effects of Eutrophication on the lake

3
Objectives

• To estimate Eutrophication load (Phosphorus
  content) in Songkhla Lake.

4
Life Cycle of Phosphorus
Uptake
Phytoplankton Biomass (B)
Flush out
Respiration
Sedimentation
Death
Inflow
Mineralization
Sedimentary nutrient (S)
Phosphorus (P)
Flush out
Flush out
Mineralization
Detritus (D)
Flush out
5
General Equations

• Phosphorus (P)
• dP/dt Inflow Respiration Mineralization
  (S) Mineralization (D) - Uptake - Flush
  out
• (IF) (REB) (MIS) (MID) - (UPP) -
  (FOP)
• Phytoplankton Biomass (B)
• dB/dt Uptake - Respiration - Sedimentation -
  Death -
• Flush out
• (UPP) - (REB) - (SEB) - (DEB) - (FOB)
• Sedimentary Nutrient (S)
• dS/dt Sedimentation - Mineralization - Flush
  out
• (SEB) - (MIS) - (FOS)
• Detritus (D)
• dD/dt Death - Mineralization - Flush out
• (DEB) - (MID) - (FOD)

6
Assumptions

• Grazing of biomass is ignored.
• Totally mixing within segment system.

7
The End