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Help CenterIndustrial Liquid Chlorine Injection Skid for Wastewater Treatment Plants – Fully Automatic, Less Investment on Salt
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Tianjin ZLN Technology Co., Ltd. is a professional manufacturer specializing in industrial water treatment solutions. Our Industrial Liquid Chlorine Injection Skid is designed specifically for wastewater treatment plants, offering a fully automatic operation that significantly reduces the need for salt investment. By directly injecting liquid chlorine, this system eliminates the costs and labor associated with on-site electrolytic chlorination using salt, providing a more efficient and cost-effective disinfection method.
This skid-mounted unit integrates advanced PLC control, precision dosing pumps, and comprehensive safety mechanisms to ensure accurate chlorine delivery and reliable performance. It is ideal for municipal and industrial wastewater treatment facilities seeking to lower operational costs while maintaining high disinfection standards.
Product Features and Benefits
Fully Automatic Control: PLC-based system automatically adjusts chlorine injection rate based on flow and residual chlorine signals, ensuring optimal dosing without manual intervention.
Less Investment on Salt: Direct liquid chlorine injection eliminates the need for salt storage, brine preparation, and electrolysis equipment, reducing both capital expenditure and ongoing consumables cost.
High Precision Dosing: Equipped with diaphragm metering pumps or peristaltic pumps, providing accurate dosing with ±1% repeatability.
Modular Skid Design: Pre-assembled on a sturdy skid, the unit is compact, easy to install, and requires minimal footprint. All components are factory-tested for quick commissioning.
Enhanced Safety: Includes chlorine gas leak detectors, emergency shut-off valves, pressure relief devices, and ventilation ports to ensure safe operation in compliance with industrial standards.
Low Maintenance: Robust construction with corrosion-resistant materials (stainless steel or carbon steel with anti-corrosion coating) reduces downtime and maintenance costs.
Remote Monitoring Capability: Optional SCADA interface allows real-time monitoring and control from a central control room.
Technical Specifications
| Parameter | Value |
| Flow Rate Range | 500 – 2000 L/h (customizable) |
| Chlorine Concentration | 5% – 15% (as per customer requirement) |
| Operating Pressure | 0.3 – 0.8 MPa |
| Power Supply | 220V / 380V, 50/60Hz, 3-phase |
| Control System | PLC + HMI (Siemens or Schneider) |
| Skid Dimensions (L×W×H) | 2000×1200×1800 mm (customizable) |
| Material of Construction | Carbon Steel (epoxy coated) / SS304 / SS316 |
| Safety Features | Leak detector, emergency shut-off, pressure relief valve |
| Optional Features | SCADA interface, remote monitoring, automatic backwash |
Why Choose ZLN Liquid Chlorine Injection Skid?
Traditional wastewater disinfection often relies on sodium hypochlorite generated from salt electrolysis, which requires large salt storage, handling, and high electricity consumption. Our liquid chlorine injection skid directly uses commercial liquid chlorine (available in cylinders or bulk tanks), eliminating the need for salt and reducing energy usage by up to 40%. This translates to significant savings on operational expenditure (OPEX).
The fully automatic PLC control ensures consistent residual chlorine levels, even with fluctuating flow rates, improving treatment efficiency and compliance with discharge standards. Additionally, the compact skid design reduces installation time and civil works, making it ideal for retrofitting existing plants or new projects.
Frequently Asked Questions (FAQ)
Q: What type of chlorine source is required?
A: This skid is designed to work with commercial liquid chlorine (typically 12.5% to 15% NaOCl solution or chlorine gas dissolved in water). The exact concentration can be customized based on your local supply.Q: Does the system require any salt or brine preparation?
A: No. Unlike electrolytic chlorination systems, this skid uses ready-to-use liquid chlorine, completely eliminating the need for salt storage, mixing, and electrolysis equipment.Q: What are the installation requirements?
A: The skid is self-contained with a small footprint. It requires a concrete foundation, power supply, chlorine inlet connection, and injection point in the pipeline. All components are pre-piped and wired for quick installation.Q: How often does the system need maintenance?
A: Maintenance intervals depend on usage, but typically the dosing pump and valves require inspection every 3–6 months. The PLC and sensors are low-maintenance with self-diagnostics.Q: Is the system safe to operate?
A: Yes. It includes multiple safety layers: chlorine gas leak detector, emergency shut-off valve, pressure relief, and automatic shutdown in case of abnormal conditions. Optional remote monitoring enhances safety.Q: Can the flow rate be customized for larger plants?
A: Absolutely. We offer skids with flow rates from 500 L/h up to 5000 L/h or more. Larger capacities can be achieved by parallel units or custom design.Q: What control interface is provided?
A: Standard is a touchscreen HMI with intuitive menus. It supports remote communication via Modbus or Ethernet for integration with the plant SCADA.Q: What warranty and after-sales support do you offer?
A: We provide a 12-month standard warranty. Our technical team is available via email, phone, or video call for troubleshooting, and we can supply spare parts quickly from our warehouse in Tianjin.
Tianjin ZLN Technology Co., Ltd. is a reliable manufacturer with a strong presence in global markets including North America, South America, Eastern Europe, Southeast Asia, Africa, and Oceania. Our products are shipped from Tianjin Port with strict quality control inspections. We have delivered hundreds of water treatment units to satisfied customers worldwide. Contact us today to discuss your specific requirements and receive a customized quotation.
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