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Welcome to Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. – a professional manufacturer of water treatment dosing solutions. Our Fully Automatic Liquid Chlorine Dosing System with PLC Control is designed to provide precise, reliable, and safe chlorine injection for municipal and industrial water disinfection. With years of experience and a strong global presence (including North America, Europe, Southeast Asia, and Africa), we ensure that every system meets the highest standards of performance and durability. This system integrates advanced PLC technology to automate the entire dosing process, reducing manual intervention and ensuring consistent disinfectant levels. Whether you need to treat potable water, wastewater, or cooling water, our dosing system delivers efficiency and peace of mind.
Key Features & Technical Specifications
PLC-based automatic control – Real-time monitoring of flow, chlorine residual, and dosing rate; supports remote communication (optional).
High-precision metering pump – Diaphragm or piston type with ±1% accuracy, ensuring precise chlorine addition.
Robust construction – Corrosion-resistant PVC or stainless steel (SUS304) wetted parts, suitable for harsh chemical environments.
User-friendly interface – Touch screen HMI with intuitive menu, allowing easy parameter setting and data logging.
Safety features – Leak detection, low-level alarm, emergency stop, and automatic shutdown in case of abnormal conditions.
Flexible configuration – Flow rate from 0.5 L/h to 2000 L/h, customizable per customer requirements; optional integration with SCADA.
Energy-efficient operation – Variable frequency drive (VFD) for the pump motor, reducing power consumption.
| Parameter | Specification |
| Flow Rate | 0.5 – 2000 L/h (customizable) |
| Working Pressure | Up to 10 bar |
| Power Supply | 220V/380V, 50/60Hz |
| Control Accuracy | ±1% (with flow feedback) |
| Material | PVC / SUS304 (optional) |
| Chlorine Capacity | 0.5 – 200 kg/h (depending on concentration) |
Benefits for Your Water Treatment Process
Eliminate manual dosing errors – PLC automatically adjusts dosing based on real-time demand, maintaining optimal chlorine residual.
Reduce chemical waste – Precise metering saves up to 30% chlorine compared to manual systems.
Enhance system reliability – Redundant safety interlocks ensure continuous operation even in demanding conditions.
Minimize downtime – Self-diagnostic functions and easy maintenance allow quick troubleshooting.
Adapt to varying flow rates – Ideal for plants with fluctuating water demand, such as municipal networks or industrial processes.
Trust & After-Sales Support
As a manufacturer located in Tianjin, China, ZLN Technology has supplied dosing systems to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We ship from Tianjin Port with professional packaging and offer one-year warranty. Our technical team provides online support and onsite commissioning (available upon request). With a strong track record and a focus on customer satisfaction, we are confident that our Fully Automatic Liquid Chlorine Dosing System will exceed your expectations.
Frequently Asked Questions (FAQ)
1. What is the typical payback period for this system?
Depending on your chlorine consumption and manual labor costs, most customers achieve ROI within 6–12 months due to reduced chemical waste and operational efficiency.
2. Can this system be integrated with existing SCADA?
Yes, our PLC supports Modbus RTU/TCP and can be easily integrated with most SCADA systems. Optional Ethernet/IP or Profibus is available upon request.
3. What safety measures are included?
The system includes a leak detection sensor, low-level alarm, emergency stop button, and automatic shutdown if a leak is detected. All wetted parts are chlorine-resistant.
4. What is the maximum chlorine concentration allowed?
The system can handle liquid chlorine (sodium hypochlorite up to 12% concentration) or gas chlorine dissolved in water. For higher concentrations, please contact us for custom design.
5. How often does the metering pump require maintenance?
Diaphragm pumps typically require diaphragm replacement every 2–3 years under normal operation. Check valves and seals should be inspected annually.
6. Do you provide onsite installation support?
Yes, we can arrange for an engineer to supervise installation and commissioning for overseas projects. The cost is quoted separately.
7. What is the power consumption of the system?
Average power consumption for a 500 L/h system is about 1.5 kW. The VFD option further reduces energy use during low-flow periods.
8. Can the system be used for other chemicals besides chlorine?
Yes, with proper material selection (e.g., PVDF, PTFE), the same dosing platform can be adapted for other liquid chemicals like sodium bisulfite, caustic soda, or polymers. Please specify your chemical when ordering.
Contact us today for a customized proposal or sample testing. We are ready to support your water treatment projects with reliable, automatic dosing solutions.
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