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Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. is a professional manufacturer specializing in water treatment dosing systems. Our Liquid Chlorine Dosing System for Municipal Water Treatment with Fully Automatic PLC Control is designed to deliver precise, reliable, and safe chlorine dosing for disinfection in municipal water plants. By integrating advanced PLC automation, this system ensures continuous and accurate chemical injection, reducing manual intervention and improving operational efficiency. Whether you are upgrading an existing facility or building a new plant, ZLN’s dosing solution offers the perfect balance of performance and cost-effectiveness.
The system is engineered to handle the demanding requirements of municipal water treatment, including high flow rates, variable water quality, and strict safety standards. With a robust construction and user-friendly interface, it provides operators with full control over dosing parameters, real-time monitoring, and alarm functions. Below we detail the key features, technical specifications, and benefits that make this system a top choice for water utilities worldwide.
Key Features & Advantages
Fully Automatic PLC Control – The system uses a programmable logic controller (PLC) to automatically adjust dosing based on flow rate, residual chlorine level, or other process signals. This ensures consistent disinfection even under varying water conditions.
High Precision Dosing – Equipped with a reliable metering pump and feedback loop, the dosing accuracy is typically within ±1%, minimizing chemical waste and ensuring compliance with water quality standards.
User-Friendly Touchscreen Interface – An intuitive HMI (Human-Machine Interface) allows operators to set parameters, view historical data, and receive instant alarms. No complex programming required.
Safe & Leak-Proof Design – All components are made from corrosion-resistant materials such as PVC, UPVC, or stainless steel, with double containment and leak detection options to prevent hazardous chlorine exposure.
Modular & Customizable – The system can be configured as a skid-mounted or wall-mounted unit, with options for multiple dosing pumps, storage tanks, and remote monitoring via SCADA or Ethernet.
Low Maintenance – Self-priming pumps, easy-to-clean filters, and durable check valves reduce downtime and maintenance costs. Spare parts are readily available.
Technical Specifications
| Parameter | Value / Range |
| Model | ZLN-LCDS-1000 (standard), customizable |
| Dosing Flow Rate | 0 – 100 L/h (other ranges available upon request) |
| Operating Pressure | 0 – 10 bar |
| Power Supply | 220V / 380V, 50/60Hz, single or three phase |
| Control Accuracy | ±1% of set point |
| Material of Construction | PVC / UPVC / SS316 (optional) |
| Communication Interface | RS485 / Modbus / Ethernet (optional) |
| Protection Level | IP54 (standard), IP65 available |
The system is designed to operate continuously in harsh environments, with a temperature range of 0°C to 50°C. Optional features include remote monitoring, automatic backwash filters, and integration with existing SCADA systems.
Why Choose ZLN?
Based in Tianjin, China, ZLN Technology Co., Ltd. has been a trusted manufacturer of water treatment dosing systems for over a decade. We serve clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and domestic markets. All our products are shipped from Tianjin Port, ensuring efficient logistics worldwide. Our team of experienced engineers provides full technical support, from system design to commissioning and after-sales service. By choosing ZLN, you benefit from direct factory pricing, strict quality control, and customized solutions tailored to your specific water treatment needs.
We understand that every municipal water treatment plant has unique requirements. That is why our liquid chlorine dosing system is fully customizable – from pump capacity and control logic to material selection and auxiliary equipment. We invite you to contact us for a detailed proposal or to discuss your project. Our goal is to help you achieve safe, efficient, and cost-effective disinfection.
Frequently Asked Questions
1. What is the typical delivery time for this system?
Lead time depends on configuration and quantity. Standard systems usually ship within 15-30 working days after order confirmation. Custom orders may take longer. Please contact us for an accurate estimate.
2. Can the system handle liquid sodium hypochlorite as well?
Yes, the same system can be used for sodium hypochlorite dosing with appropriate material selection. We recommend using PVC or stainless steel components for compatibility.
3. How is the PLC programmed? Is it user-friendly?
The PLC comes pre-programmed from the factory with standard dosing logic. The HMI touchscreen allows easy parameter adjustment (e.g., dosing rate, set points, alarms). Advanced programming can be done by our engineers or by your local technician via laptop.
4. What safety features are included?
Standard safety features include: leak detection sensor, low-level alarm, emergency stop button, pressure relief valve, and automatic pump shutdown on fault. Options include gas detection and secondary containment.
5. Can the system be integrated with existing SCADA?
Yes, the PLC supports Modbus RTU/TCP, Profibus, or Ethernet/IP communication protocols. We can provide a gateway or direct connection to your SCADA system.
6. What is the maintenance schedule?
Routine maintenance includes: weekly inspection of pump seals and valves, monthly cleaning of filters, and annual calibration of sensors. The system is designed for low maintenance with durable components.
7. Do you provide installation and commissioning support?
Yes, we offer on-site commissioning services by our engineers (travel expenses apply). Alternatively, we provide detailed installation manuals and remote guidance via video call.
8. What is the lifespan of the system?
With proper maintenance, the system can operate effectively for 10-15 years. Key components like pumps and sensors may need replacement after 5-8 years, depending on usage conditions.
Contact us today for a quotation or to request a sample system. Let ZLN help you optimize your municipal water treatment disinfection process.
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