OYSTERS BY THE NUMBERS

September 10, 2024 by
123, Administrator
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OYSTERS BY THE NUMBERS
Nutrient Removal Efficiency of Oysters

Average Nutrient Removal per Oyster:

  • Nitrogen: 0.5 grams/day.
  • Phosphate: 0.05 grams/day.
  • Filtration Capacity: 50–130 gallons of water per day.

18-Month Impact (540 days per oyster):

  • Nitrogen: 270 grams removed.
  • Phosphate: 27 grams removed.

Nutrient Removal in a Rack of 10,000 Oysters

  • Daily Filtration Capacity: 500,000 to 1.3 million gallons.
  • Daily Nutrient Removal:
    • Nitrogen: 5 kg (5,000 grams).
    • Phosphate: 0.5 kg (500 grams).

18-Month Impact (Rack of 10,000 Oysters):

  • Nitrogen: 2.7 metric tons removed.
  • Phosphate: 270 kg removed.
  • Water Filtered: 270 million to 702 million gallons.

Racks Needed for 1 million Gallons of Filtration Daily:

  • At Minimum Rate (50 gallons/day per oyster): 2 racks.
  • At Maximum Rate (130 gallons/day per oyster): Less than 1 rack.

Nutrient Removal for 1 million Gallons of Filtration (18 Months):

  • Nitrogen: 1.35 to 2.7 metric tons.
  • Phosphate: 135 to 270 kg.

Note: Over 18 months, one rack of 10,000 oysters filters between 270 million and 702 million gallons of water.


123, Administrator September 10, 2024
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