Volume Of Aerator Given Specific Substrate Utilization Rate Per Day Calculator

Formula Used:

\[ V = \frac{Qs \times (Qi - Qo)}{U' \times X'} \]

Sewage Discharge (Qs):

m³/s

Influent BOD (Qi):

kg/m³

Effluent BOD (Qo):

kg/m³

Specific Substrate Utilization Rate Per Day (U'):

1/s

Mixed Liquor Suspended Solids (X'):

kg/m³

Volume of Tank (V):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Volume of Aerator Given Specific Substrate Utilization Rate Per Day Formula?

The Volume of Aerator Given Specific Substrate Utilization Rate Per Day formula calculates the required volume of an aeration tank based on sewage discharge, BOD levels, substrate utilization rate, and mixed liquor suspended solids concentration. This is essential for designing efficient wastewater treatment systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V = \frac{Qs \times (Qi - Qo)}{U' \times X'} \]

Where:

\( V \) — Volume of Tank (m³)
\( Qs \) — Sewage Discharge (m³/s)
\( Qi \) — Influent BOD (kg/m³)
\( Qo \) — Effluent BOD (kg/m³)
\( U' \) — Specific Substrate Utilization Rate Per Day (1/s)
\( X' \) — Mixed Liquor Suspended Solids (kg/m³)

Explanation: The formula calculates the necessary tank volume to achieve the desired BOD reduction based on the specific substrate utilization rate and mixed liquor concentration.

3. Importance of Volume Calculation

Details: Accurate volume calculation is crucial for designing efficient wastewater treatment systems, ensuring proper BOD removal, optimizing energy consumption, and meeting environmental discharge standards.

4. Using the Calculator

Tips: Enter sewage discharge in m³/s, BOD values in kg/m³, specific substrate utilization rate in 1/s, and mixed liquor suspended solids in kg/m³. All values must be positive, and influent BOD should be greater than effluent BOD.

5. Frequently Asked Questions (FAQ)

Q1: What is Specific Substrate Utilization Rate?
A: Specific Substrate Utilization Rate is the rate at which microorganisms utilize a specific substrate within a treatment system, typically expressed per day.

Q2: Why is Mixed Liquor Suspended Solids important?
A: Mixed Liquor Suspended Solids represent the concentration of microorganisms in the aeration tank, which directly affects the treatment efficiency and BOD removal rate.

Q3: What are typical values for Specific Substrate Utilization Rate?
A: Typical values range from 0.01 to 0.1 per day, depending on the wastewater characteristics and microbial population.

Q4: How does sewage discharge affect tank volume?
A: Higher sewage discharge requires larger tank volumes to maintain adequate hydraulic retention time for effective treatment.

Q5: What factors influence the BOD removal efficiency?
A: Factors include temperature, pH, dissolved oxygen levels, microbial population, and the specific substrate utilization rate.