1. What is Displacement Efficiency?

Displacement efficiency is the ratio of flowing period to detention period in sedimentation tanks. It measures how effectively water is displaced through the tank system.

2. How Does the Calculator Work?

The calculator uses the Displacement Efficiency formula:

Where:

• \( De \) — Displacement Efficiency
• \( Ft \) — Flowing through Period (seconds)
• \( Td \) — Detention time (seconds)

Explanation: The formula calculates the efficiency of water displacement by comparing the actual flow time to the theoretical detention time.

3. Importance of Displacement Efficiency Calculation

Details: Calculating displacement efficiency is crucial for optimizing sedimentation tank performance, ensuring proper water treatment, and maintaining efficient operation of wastewater treatment systems.

4. Using the Calculator

Tips: Enter flowing through period and detention time in seconds. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a good displacement efficiency value?
A: Higher values indicate better efficiency, with values closer to 1 representing optimal displacement in sedimentation tanks.

Q2: How does displacement efficiency affect sedimentation?
A: Higher displacement efficiency ensures better flow distribution and more effective particle settlement in the tank.

Q3: What factors can affect displacement efficiency?
A: Tank design, inflow distribution, baffle arrangements, and flow rates can significantly impact displacement efficiency.

Q4: How often should displacement efficiency be calculated?
A: Regular monitoring is recommended, especially after maintenance or changes in flow conditions, to ensure optimal tank performance.

Q5: Can this calculator be used for different tank designs?
A: Yes, the basic formula applies to various sedimentation tank designs, though specific efficiency targets may vary.