pH automatic dosing adjustment equipment

Automatic pH dosing system | Precise, intelligent, and durable water pH balancing solution

This equipment is specifically designed for industrial, environmental, and water treatment applications. It can automatically add acid or alkali to water to achieve precise pH control. The system integrates an online pH monitor, a corrosion-resistant dosing pump, a large-capacity dosing tank, and a high-efficiency mixer, forming a complete, stable, and easy-to-maintain closed-loop control system.

core components

High-precision pH meter: Real-time water quality monitoring, rapid response, stable measurement, with upper and lower limit alarms and 4-20mA output.

Corrosion-resistant dosing pump: Made of PTFE/PP material, suitable for acids, alkalis, sodium hypochlorite, and other solutions; adjustable flow rate and accurate metering.

Dosing tank with agitator: PE or PP tank body, equipped with a top-mounted agitator to ensure complete dissolution and uniform mixing of powders or high-concentration solutions, preventing sedimentation.

Intelligent control box: PLC or dedicated pH controller, supporting PID adjustment, automatic start/stop of the dosing pump and agitator, and manual/automatic switching.

Working principle

The pH meter continuously monitors the pH value of the water. When the measured value deviates from the set range (e.g., <6.5 or >8.5), the controller automatically starts the acid or alkali pump, while the agitator ensures uniform concentration of the chemical solution in the tank. The system stops after the pH returns to the set range, requiring no manual intervention throughout the process.

Main advantages

High degree of automation: 24-hour continuous operation, reducing manual inspection and dosing.

Precise dosing: Closed-loop control based on real-time feedback avoids overdosing or underdosing.

Strong adaptability: Can treat various water bodies such as electroplating wastewater, chemical circulating water, domestic sewage, swimming pools, and cooling towers.

Durable materials: Both the pump head and tank are resistant to acid and alkali corrosion, suitable for long-term dosing of hydrochloric acid, sulfuric acid, sodium hydroxide, etc.

Easy maintenance: Modular design, quick-disconnect pipe interfaces, and convenient mixer maintenance.

Technical parameters

pH measurement range: 0 – 14

Control accuracy: ±0.1 pH

Maximum flow rate of dosing pump: 3 – 120 L/H (optional)

Dosing tank capacity: 100L – 2000L (customizable)

Agitator power: 0.37 – 2.2 kW

Power supply: Customizable upon request

Application areas

Industrial wastewater treatment (electroplating, chemical, printing and dyeing, pharmaceutical)

Circulating cooling water systems

Municipal sewage treatment plants

Swimming pool and landscape water pH adjustment

Reverse osmosis pretreatment

We can provide complete selection and piping design support based on your water quality parameters, flow rate, and reagent type. Welcome to send us your technical needs for consultation.