L1 /
13
CH3041
EUTROPHICATION
• Eutrophication “well nourished”
- refers to the condition of a lake
or reservoir where there is excess
algal growth which leads to
deterioration of the body of water.
- refers to the condition of a lake
or reservoir where there is excess
algal growth which leads to
deterioration of the body of water.
• Step
1: Input of excess nutrients
(N, P, K) from watershed or sewage.
(N, P, K) from watershed or sewage.
• Step
2: Large surface biomass produced.
• Step
3: Dead biomass accumulates at the
bottom where nutrient recycling occurs.
bottom where nutrient recycling occurs.
• Step 4: Bottom fills in & swamp develops.
• Normally P is limiting, this is the major
initiator of Step1
T oC
DO mg/L
