Treatability Constant Calculator

Posted by Dinesh on

Use the simple treatability constant calculation tool to calculate or predict performance of trickling filters packed with plastic media. Due to the predictable properties of plastic media, empirical relationships are available to predict performance of trickling filters packed with plastic media. However, the treatability constant must first be adjusted for both the temperature of the wastewater and the depth of the actual filter. Adjustment for temperature - The treatability constant is first adjusted from the given standard at 20C (68F) to the actual wastewater temperature using k30/20 = k20/20 * ?T-20.

Treatability Constant Calculation

k20/20 :
Temperature activity coefficient [?]:
Wastewater temperature (T) [in C]:
k30/20 :

Formula:

k30/20 = k20/20 × ?T-20

where,
  • k30/20 = treatability constant at 30C (86F) and 20 ft (6.1 m) filter depth
  • k20/20 = treatability constant at 20C (68F) and 20 ft (6.1 m) filter depth (as example values)
  • ? = temperature activity coefficient (assume 1.035)
  • T = wastewater temperature

Note: The actual temperature, C and depth, ft (m) are used when this formula is applied in practice. The numbers given here are for illustrative purposes only.