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🧪 Chemical Feed Calculator
Live dosing calculations for all major water treatment chemicals. Enter your flow rate and target dose — get feed rates instantly.
🟡 Chlorine Calculator
Cl₂ Mass Needed
25 kg/day
25000 g/day
Product Mass
38.46 kg/day
1.603 kg/hr
Feed Rate
17.36 g/min
continuous feed
📐 Formula
Mass (kg/day) = Flow (m³/day) × Dose (mg/L) × 1000 (L/m³) ÷ 1,000,000
Product (kg/day) = Mass (kg/day) ÷ Purity (decimal)
Feed Rate (g/min) = Mass (g/day) ÷ 1440 min/day
Product (kg/day) = Mass (kg/day) ÷ Purity (decimal)
Feed Rate (g/min) = Mass (g/day) ÷ 1440 min/day
📋 Typical Dose Ranges — Quick Reference
| Chemical | Typical Dose | Purpose | pH Range | Key Note |
|---|---|---|---|---|
| Chlorine (Cl₂) | 1–5 mg/L | Disinfection | 6.5–8.5 | CT value determines effectiveness |
| Alum Al₂(SO₄)₃ | 10–50 mg/L | Coagulation | 6.5–7.5 | Consumes alkalinity |
| Ferric Chloride | 5–30 mg/L | Coagulation | 5.0–7.0 | Wider pH range than alum |
| Lime (CaO) | 5–50 mg/L | pH/Alk adjust | 8.0–9.5 | Raises pH and alkalinity |
| Fluoride (H₂SiF₆) | 0.3–0.8 mg/L | Dental health | Any | Ontario target: 0.7 mg/L |
| Polymer (cationic) | 0.1–2 mg/L | Coagulant aid | Any | Always dilute before feeding |