1. What is the Width Calculation Formula?

The width calculation formula determines the required width of a sedimentation tank based on discharge rate, settling velocity, and tank length. This is essential for designing efficient sedimentation basins in water treatment systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( w \) — Width of the tank (m)
• \( Qs \) — Discharge entering the basin (m³/s)
• \( vs \) — Settling velocity of particles (m/s)
• \( L \) — Length of the tank (m)

Explanation: The formula calculates the required tank width to ensure proper sedimentation by balancing the flow rate with the particle settling characteristics and tank dimensions.

3. Importance of Tank Width Calculation

Details: Accurate width calculation is crucial for designing effective sedimentation tanks that can properly separate suspended solids from water. Proper dimensions ensure optimal flow conditions and sedimentation efficiency.

4. Using the Calculator

Tips: Enter discharge in m³/s, settling velocity in m/s, and length in meters. All values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is settling velocity?
A: Settling velocity is the terminal velocity at which particles settle in still fluid under gravity. It depends on particle size, density, and fluid properties.

Q2: Why is tank width important in sedimentation?
A: Proper tank width ensures uniform flow distribution and provides sufficient surface area for effective particle settlement without causing short-circuiting.

Q3: What are typical values for settling velocity?
A: Settling velocity varies widely depending on particle characteristics. For sand particles, it can range from 0.01-0.1 m/s, while finer particles may have velocities as low as 0.0001 m/s.

Q4: How does discharge rate affect tank design?
A: Higher discharge rates require larger tank dimensions (width and/or length) to maintain adequate detention time for effective sedimentation.

Q5: Are there limitations to this formula?
A: This formula provides a basic calculation. Actual tank design should consider additional factors such as flow distribution, inlet/outlet design, and sludge removal mechanisms.