BNR Stoichiometric Nutrient Removal Capacity (N & P) Calculator

Quick Answer

Calculate BNR Stoichiometric Nutrient Removal Capacity (N & P)

Result Interpretation

BNR Stoichiometric Nutrient Removal Capacity (N & P) Calculator computes Nutrient removal capacity in kg/d using the defined engineering formula and the input values provided. Nutrient removal capacity is expressed in kg/d. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

Nitrogen removal yield coefficient (mass N removed per mass COD removed) = 0.12
Phosphorus removal yield coefficient (mass P removed per mass COD removed) = 0.03
Influent wastewater flow rate = 5000
Influent total nitrogen concentration = 42
Influent total phosphorus concentration = 6.5
Effluent total nitrogen concentration = 7
Effluent total phosphorus concentration = 0.8

Expected Result:

Nutrient removal capacity = 21855

Engineering Interpretation:

Under the given input conditions, the calculated result is: Nutrient removal capacity = 21855 kg/d.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

nutrient removal capacity = (influent wastewater flow rate * (influent total nitrogen concentration - effluent total nitrogen concentration)) * mass N removed per mass COD removed + (influent wastewater flow rate * (influent total phosphorus concentration - effluent total phosphorus concentration)) * mass P removed per mass COD removed

Formula family: formula_wastewater_nutrient_removal_capacity_calculator_for_bnr_systems

Variables

Symbol	Label	Role	Description
Q_in	Influent wastewater flow rate	INPUT	Influent wastewater flow rate
S_N_in	Influent total nitrogen concentration	INPUT	Influent total nitrogen concentration
S_N_eff	Effluent total nitrogen concentration	INPUT	Effluent total nitrogen concentration
S_P_in	Influent total phosphorus concentration	INPUT	Influent total phosphorus concentration
S_P_eff	Effluent total phosphorus concentration	INPUT	Effluent total phosphorus concentration
Y_N	Nitrogen removal yield coefficient (mass N removed per mass COD removed)	INPUT	Nitrogen removal yield coefficient (mass N removed per mass COD removed)
Y_P	Phosphorus removal yield coefficient (mass P removed per mass COD removed)	INPUT	Phosphorus removal yield coefficient (mass P removed per mass COD removed)
nutrient_removal_capacity	Nutrient removal capacity	OUTPUT	Nutrient removal capacity

Calculation Steps

Enter the influent wastewater flow rate in m3/d.
Enter the influent total nitrogen concentration in g/m3.
Enter the effluent total nitrogen concentration in g/m3.
Enter the influent total phosphorus concentration in g/m3.
Enter the effluent total phosphorus concentration in g/m3.
Enter the nitrogen removal yield coefficient (mass n removed per mass cod removed) in g/g.
Enter the phosphorus removal yield coefficient (mass p removed per mass cod removed) in g/g.
Step 1: Compute nutrient removal capacity.
Read the nutrient removal capacity (kg/d) from the results.

Engineering Summary

Calculate BNR Stoichiometric Nutrient Removal Capacity (N & P)

Frequently Asked Questions

What does this calculator calculate?

The BNR Stoichiometric Nutrient Removal Capacity (N & P) Calculator estimates Nutrient removal capacity based on the input parameters you provide

Why is influent wastewater flow rate important in this calculation?

influent wastewater flow rate is used directly in the calculation of nutrient removal capacity. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter influent wastewater flow rate in m3/d, the calculator uses it in the engineering formula to compute the output

How should I interpret the result nutrient removal capacity?

The calculator outputs nutrient removal capacity in kg/d. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Influent wastewater flow rate (m3/d), Influent total nitrogen concentration (g/m3), Effluent total nitrogen concentration (g/m3), Influent total phosphorus concentration (g/m3), Effluent total phosphorus concentration (g/m3), Nitrogen removal yield coefficient (mass N removed per mass COD removed) (g/g), Phosphorus removal yield coefficient (mass P removed per mass COD removed) (g/g). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment