Swimming Pool Water Treatment
Automated Pool Chemical Dosing & Water Quality Control
Application Overview
Commercial swimming pools, public aquatic centers, and hotel pools require continuous automated chemical dosing to maintain safe, compliant water quality. Precise control of free chlorine concentration (0.5–3.0 mg/L) and pH (7.2–7.6) is critical for swimmer safety, regulatory compliance, and equipment protection. TL Environment solenoid metering pumps and online sensors provide a complete automated dosing and monitoring solution.
Key Challenges
- Maintaining free chlorine within the 0.5–3.0 mg/L regulatory range continuously
- pH control within 7.2–7.6 for swimmer comfort and chlorine efficacy
- Automatic dosing response to bather load and environmental conditions
- Safe handling and dosing of liquid chlorine (NaOCl) and pH adjustment chemicals (HCl, CO₂)
- Compliance with local health authority water quality standards
- Minimizing chemical consumption and operating costs
Key Monitoring Parameters
- Free Chlorine (mg/L)
- pH (7.2–7.6)
- ORP (mV)
- Combined Chlorine / Chloramines
- Temperature (°C)
- Cyanuric Acid (for outdoor pools)
Need a Custom Solution?
Our engineers can design a complete instrumentation package for your specific process requirements.
Contact Engineering TeamProducts for Swimming Pool Water Treatment
Solenoid Diaphragm Metering Pump
Precise dosing of sodium hypochlorite (NaOCl) for chlorine disinfection
Solenoid Diaphragm Metering Pump
Dosing of hydrochloric acid (HCl) or CO₂ for pH reduction
Chlorine Sensor
Continuous free chlorine monitoring for automatic dosing control and compliance
pH / ORP Sensor
Continuous pH monitoring for pH dosing control and swimmer comfort
Process & Instrumentation Overview
Pool water is continuously circulated through the filtration and chemical dosing system.
Sand or cartridge filters remove particulates and turbidity from the circulating water.
Chlorine sensor measures free chlorine; metering pump doses NaOCl to maintain 0.5–3.0 mg/L.
pH sensor measures water pH; metering pump doses HCl or CO₂ to maintain pH 7.2–7.6.
Treated water returns to the pool through inlets; sensors provide continuous compliance monitoring.
Chemical Dosing Points
| Dosing Location | Chemical | Recommended Equipment | Purpose |
|---|---|---|---|
| Return Line (after filter) | Sodium Hypochlorite (NaOCl) | Pool Chemical Dosing System / Solenoid Metering Pump | Disinfection dosing controlled by free chlorine sensor |
| Return Line | H₂SO₄ or CO₂ | pH Adjustment Dosing System | pH correction controlled by pH sensor feedback |
| Surge Tank / Balance Tank | Algaecide (periodic) | Solenoid Diaphragm Metering Pump (H Series) | Algae prevention dosing on weekly schedule |
Water Quality Monitoring Points
Chlorine Sensor + pH/ORP Sensor
Turbidity Sensor + Conductivity Sensor
Electromagnetic or Ultrasonic Flowmeter
Typical System Configuration
Information Required for Solution Design
To provide an accurate system recommendation, please prepare the following information before contacting our engineers:
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Frequently Asked Questions
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