Dosage Formula:
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Definition: This calculator determines the dosage required to achieve coliform reduction based on chlorine requirements, peaking factor, and average flow rate.
Purpose: It helps water treatment professionals calculate the appropriate disinfectant dosage needed for effective pathogen reduction in water systems.
The calculator uses the formula:
Where:
Explanation: The formula calculates the disinfectant dosage needed by considering the chlorine demand, system flow characteristics, and standard conversion factors.
Details: Proper dosage calculation ensures effective disinfection while avoiding over-chlorination which can lead to harmful byproducts and unnecessary costs.
Tips: Enter the chlorine requirement in kg/s, peaking factor (default 0.9999), and average flow rate in m³/s (default 2.5). All values must be > 0.
Q1: What is the peaking factor?
A: The peaking factor is the ratio of maximum flow to average daily flow in a water system, accounting for usage variations.
Q2: Why is 8.34 used in the formula?
A: 8.34 is the conversion factor that translates between pounds per gallon and kilograms per cubic meter.
Q3: How do I determine chlorine requirements?
A: Chlorine requirements are typically based on water quality tests, regulatory standards, and system characteristics.
Q4: What's a typical dosage range?
A: Typical chlorine dosages range from 1-5 mg/L (0.001-0.005 kg/m³) for drinking water, but vary based on conditions.
Q5: Does this account for chlorine decay?
A: No, this calculates initial dosage. Additional chlorine may be needed to maintain residual throughout the system.