1. What is Dosage Used given Average Daily Consumption of Chlorine?

Definition: This calculator determines the dosage of chlorine needed for water treatment based on the chlorine requirement and average flow rate.

Purpose: It helps water treatment professionals calculate the appropriate chlorine dosage to achieve effective disinfection while maintaining water safety standards.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( D \) — Dosage (kg/m³)
• \( Cl_2 \) — Chlorine required (kg/s)
• \( Q_a \) — Average flow rate (m³/s)
• 8.34 — Conversion factor (lb/gal to kg/m³)

Explanation: The formula calculates the chlorine dosage needed per unit volume of water to achieve the desired disinfection level.

3. Importance of Chlorine Dosage Calculation

Details: Proper chlorine dosage ensures effective pathogen reduction while preventing over-chlorination which can create harmful disinfection byproducts.

4. Using the Calculator

Tips: Enter the chlorine requirement in kg/s and the average flow rate in m³/s. Both values must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 8.34 used in the formula?
A: 8.34 is the conversion factor between pounds per gallon and kilograms per cubic meter (lb/gal to kg/m³).

Q2: How do I determine chlorine requirement?
A: Chlorine requirement is typically based on water quality tests and regulatory requirements for pathogen reduction.

Q3: What's a typical chlorine dosage?
A: Typical dosages range from 1-5 mg/L (0.001-0.005 kg/m³) for drinking water, but can vary based on water quality.

Q4: How does flow rate affect dosage?
A: Higher flow rates require more total chlorine but the dosage (concentration) may remain similar if chlorine demand is proportional.

Q5: Should I adjust for contact time?
A: This calculator provides the dosage. Contact time (CT value) should be considered separately for complete disinfection planning.