How to calculate loading rates

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Waste-water treatment systems use loading rates as a measure for determining whether the system will have a tendency to clog. Recommended loading rates exist for different types of material such as sands, soil and domestic sewage. Hydraulic and organic loading rates can both be used as units of measurement.

Separate calculations are needed for hydraulic and loading-rate measurements. You can calculate loading rates with a few basic steps.

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *
  • Waste-water treatment systems use loading rates as a measure for determining whether the system will have a tendency to clog.
  • Recommended loading rates exist for different types of material such as sands, soil and domestic sewage.

Calculate the hydraulic loading rate with the formula:

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Hydraulic loading rate = Design flow (gal/day) / Area (feet ^2).

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Design flow is the volume of waste water per day.

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Calculate the organic loading with the formula:

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Organic matter = (BOD5 (mg/l) * 3.785 l/gal) / 453,600 mg/lb.

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

BOD5 is the measure of oxygen needed to degrade organic matter dissolved in the waste water over a period of 5 days.

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Calculate the organic loading rate with the formula:

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *

Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).

  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *
  • Design Flow (gal/day) )/ Area (ft^2)
  • Design flow is the volume of waste water per day.
  • Calculate the organic loading rate with the formula: Organic loading rate (lbs BOD5/ft2/day) = (Organic matter (lbs BOD5/gal).
  • *
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