Trickling Filtration Operation: Oper. Conds Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Operating Temperature (^oC) The operating temperature of the vessel.	20.0	Positive
● Organic Loading ((kg BOD/h)/m³) The loading rate of the organic material.	0.0	Positive
○ Hydraulic Loading (L/m²-h) The hydraulic loading rate of the material.	833.3	Positive
○ Recycle Ratio The ratio at which the material is recycle through the filter.	0.80	Positive
○ Weighing Factor (for NRC model) The weighing factor value used to calculate the recycling factor.	0.90	Positive
○ Temp. Correction Factor (^oC) (for Eckenfelder model) The temperature correction factor used to correct treatability factor.	1.035	Positive
○ Media Type (for Eckenfelder model) The media type used in the trickling filter.	Random Plastics Media	-
○ n-Constant (for Eckenfelder model) The media type constant for the Eckenfelder model.	0.620	Positive
○ Treatability Factor at 20 ^oC (for Eckenfelder model)	0.60	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Trickling Filtration: Modeling Calculations.

•Filter Model Data

You may select between two different filter model data. The National Research Council (NRC) model or the Eckenfelder model.

•Filter Media Type (for Eckenfelder model)

For the Eckenfelder model you may select between six different packing media types.