Automatic Chemical Dosing System
Automatic polymer and chemical dosing systems for wastewater treatment, with precise PAC/PAM preparation, metering and PLC control. Request a custom skid.
Description
Products Description

The automatic LK-JYJ Automatic Chemical Dosing System is a fully skid-mounted integrated unit that integrates chemical storage, automatic stirring, precise metering, pipeline transmission, electric control, and safety protection. Compared with traditional manual dosing, it eliminates dosing errors, unstable concentration, and frequent manual operation problems.
The whole system supports automatic liquid level monitoring, shortage alarm, proportional dosing, and continuous operation. It features simple installation, low maintenance cost, high dosing accuracy, and strong compatibility with various chemical agents. It can work stably for a long time in harsh industrial environments, realizing intelligent and unmanned chemical feeding.
Applicable Chemical Agents
This chemical metering system supports the dosing of most common water treatment chemical solutions with stable concentration and accurate proportioning, covering mainstream agents in the industry:
Coagulants & Flocculants: PAC, PAM, ferric sulfate, aluminum sulfate for suspended solids and sediment removal
pH Regulators: Sodium hydroxide, sulfuric acid, hydrochloric acid to adjust water pH value
Disinfectants: Sodium hypochlorite, chlorine dioxide, hydrogen peroxide for sterilization and algae removal
Water Quality Stabilizers: Scale inhibitors, corrosion inhibitors, biocides for circulating water and boiler water anti-scaling and anti-corrosion
Special Agents: Phosphorus removers, nitrogen removal agents, decolorizing agents for advanced wastewater treatment
The system can adapt to 0.1%–10% concentration liquid chemical dosing, meeting diverse process dosing requirements of different industries.
Core System Components
A complete chemical injection system consists of standardized modular components, ensuring integrated operation and convenient maintenance:
Chemical Storage Tank: High-corrosion-resistance tank body for long-term storage of liquid chemicals, equipped with anti-overflow and ventilation devices
Automatic Agitator: Prevents chemical precipitation and stratification to ensure uniform solution concentration
Metering Dosing Pump: Core component for precise quantitative chemical delivery
Liquid Level Monitoring Device: Real-time monitoring of tank liquid level, with automatic alarm for low liquid level
Pipeline & Valve Assembly: Anti-corrosion pipelines, check valves, relief valves and filters to ensure smooth and safe medium transmission
Electric Control Cabinet: Supports automatic start-stop, proportional dosing, linkage operation and fault self-detection
Safety Protection Accessories: Pressure relief device, leakage prevention device to avoid pipeline pressure overload and chemical leakage

Pump Options & Configuration
We provide multiple pump configurations for different flow rates, pressures and chemical media, matching customized chemical feed system solutions:
Screw Pump: Suitable for medium and large flow dosing (1000L/h–3000L/h), stable operation, low noise, suitable for viscous and impurity-containing chemical solutions, widely used in wastewater treatment projects
Diaphragm Metering Pump: High precision (accuracy ±2%), adjustable flow rate, suitable for low-flow and high-precision dosing scenarios
Operating & Standby Configuration: Support customized schemes such as 3 operating + 1 standby, 1 operating + 1 standby. The standby pump automatically starts when the working pump fails to ensure uninterrupted system operation
All pumps support continuous 24-hour operation, adapting to industrial continuous production and water treatment processes.
Main Material Selection (Wetted Parts)
Material selection is strictly based on chemical corrosion resistance to extend equipment service life and avoid medium contamination:
Tank Body: HDPE / PP / SS316L, anti-aging and strong anti-corrosion, suitable for most acidic, alkaline and neutral chemical solutions
Pump Head & Wetted Parts: PVC / CPVC / PVDF / PTFE / SS316L, optional high-grade Hastelloy for special corrosive media
Pipeline & Valves: Anti-corrosion PVC, CPVC and stainless steel materials, resistant to chemical erosion and high pressure
Agitator Shaft & Blade: SS304 / SS316L stainless steel, polished and anti-rust treated
Wide Application Fields
The automatic chemical dosing unit is widely used in various scenarios requiring precise chemical dosing:
Municipal & Industrial Wastewater Treatment: Dosing coagulants, disinfectants and phosphorus removal agents to meet discharge standards
Industrial Circulating Water & Boiler System: Dosing scale inhibitors and corrosion inhibitors to protect pipelines and boiler equipment
Drinking Water Treatment: Sterilization, disinfection and pH adjustment to ensure safe drinking water
Food & Beverage Industry: Purified water treatment and production water conditioning
Textile, Papermaking & Chemical Industry: Process water dosing and wastewater advanced treatment
Swimming Pool & Landscape Water: Regular disinfection and algae removal dosing
Technical Specifications
Dosing Accuracy: ±2% steady-state precision
Flow Rate Range: Customizable 1000L/h, 2000L/h, 3000L/h and other specifications
Applicable Solution Concentration: 0.1%–10% chemical solution
Working Temperature: 0℃–80℃ (adjustable according to materials)
Working Mode: Automatic continuous dosing / proportional dosing / manual auxiliary adjustment
Operation Mode: 24-hour continuous operation, support fault alarm and liquid level automatic protection
Power Configuration: Customized 220V/380V according to project requirements
| Model | Ability to brew medicine (L/H) | Physical dimension(mm)‑L | Physical dimension(mm)‑W | Physical dimension(mm)‑H | Total Power(kW) | Weight(kg)‑No load | Weight(kg)‑Run |
|---|---|---|---|---|---|---|---|
| LK‑JYJ500 | 500 | 1000 | 1030 | 1600 | 1.87 | 400 | 1500 |
| LK‑JYJ1000 | 1000 | 1845 | 1100 | 1750 | 2.62 | 450 | 2000 |
| LK‑JYJ1500 | 1500 | 2065 | 1100 | 1750 | 2.62 | 550 | 2650 |
| LK‑JYJ2000 | 2000 | 2340 | 1300 | 1800 | 2.62 | 750 | 3200 |
| LK‑JYJ3000 | 3000 | 2740 | 1500 | 1900 | 3.67 | 850 | 3680 |
| LK‑JYJ4000 | 4000 | 3350 | 1846 | 1758 | 3.67 | 950 | 4800 |
| LK‑JYJ5000 | 5000 | 3350 | 1846 | 1950 | 3.67 | 1010 | 5000 |
| LK‑JYJ6000 | 6000 | 3350 | 1846 | 2100 | 6.67 | 1120 | 6200 |
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