1. What is Volumetric Polymer Feed Rate?

Definition: Volumetric Polymer Feed Rate refers to the rate at which a polymer solution or emulsion is added to a system, typically a wastewater treatment process, in terms of volume per unit of time.

Purpose: It helps in determining the appropriate dosing of polymer solutions in various industrial and water treatment applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_v \) — Volumetric Polymer Feed Rate (m³/s)
• \( P \) — Polymer Feed Rate (kg/s)
• \( G_p \) — Specific Gravity of Polymer
• \( \%P \) — Percent Polymer Concentration (decimal)

Explanation: The formula converts mass feed rate to volumetric feed rate by accounting for the polymer's specific gravity and concentration in the solution.

3. Importance of Volumetric Feed Rate Calculation

Details: Accurate calculation ensures proper polymer dosing, which is critical for efficient water treatment, sludge dewatering, and other industrial processes.

4. Using the Calculator

Tips: Enter the polymer feed rate in kg/s, specific gravity of polymer (default 1.8), and percent polymer concentration (default 0.65 or 65%). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the constant 8.34 in the formula?
A: This is the conversion factor between pounds per gallon and kg/m³ (water density at standard conditions).

Q2: What's a typical specific gravity for polymers?
A: Most polymers have specific gravity around 1.8, but this can vary depending on the polymer type.

Q3: Why is polymer concentration important?
A: The concentration affects how much active polymer is actually being delivered per unit volume of solution.

Q4: How do I measure polymer feed rate?
A: Use mass flow meters or calculate from solution flow rate and concentration.

Q5: Can this calculator be used for other chemicals?
A: Yes, with appropriate specific gravity and concentration values for the chemical in question.