1. What is the Discharge Rate Formula?

The discharge rate formula calculates the rate of flow of a liquid based on falling speed, cross-sectional area, and removal ratio. This equation is particularly useful in sedimentation tank design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Discharge (m³/s)
• \( v' \) — Falling Speed (m/s)
• \( A \) — Area (m²)
• \( Rr \) — Removal Ratio (-)

Explanation: The formula calculates discharge by multiplying falling speed by area and dividing by the removal ratio.

3. Importance of Discharge Calculation

Details: Accurate discharge calculation is crucial for designing sedimentation tanks, optimizing removal efficiency, and ensuring proper wastewater treatment processes.

4. Using the Calculator

Tips: Enter falling speed in m/s, area in m², and removal ratio as a dimensionless value. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is falling speed in this context?
A: Falling speed refers to the constant speed at which particles settle through a fluid when gravitational force is balanced by drag and buoyant forces.

Q2: How is removal ratio determined?
A: Removal ratio is typically calculated as the total amount of sludge removed from the sedimentation tank divided by the total sludge present.

Q3: What are typical units for discharge?
A: Discharge is typically measured in cubic meters per second (m³/s) or liters per second (L/s).

Q4: When is this formula most applicable?
A: This formula is particularly useful in sedimentation tank design and analysis for wastewater treatment plants.

Q5: Are there limitations to this formula?
A: The formula assumes ideal settling conditions and may need adjustments for non-ideal particle shapes, fluid turbulence, or varying particle concentrations.