Our Key Advantages
Successfully delivered wastewater treatment projects across multiple countries and industries. With an extensive project portfolio, we possess in‑depth knowledge of local environmental regulations and wastewater characteristics.
Precise and reliable chemical injection solutions with PLC automatic control, designed for industrial water treatment, wastewater treatment plants, and various chemical dosing applications.
· Full-process intelligent automatic control
· Easy operation & user-friendly control
· Integrated compact structure, small footprint and simple on-site installation
· Fully sealed system for chemical mixing and dosing
· Flexible modular design, expandable to support dosing of multiple types of chemicals on demand
· Standard anti-corrosion tanks made of PE/PP
· Optional tank bodies and wetted parts in 304/316 stainless steel, PVDF and FRP
· No full-time professional chemical operation technicians required
· ODM customization available from the original manufacturer
· Core components sourced from reputable brands, ensuring stable operation and low failure rate
Linzhen Automatic Chemical Dosing System is designed to accurately prepare, mix, and inject chemicals into water or wastewater treatment processes. By automatically controlling the dosing rate according to process requirements, the system helps maintain stable water quality, improve treatment efficiency, and reduce chemical consumption.
Provides customized chemical dosing systems for municipal water treatment, industrial wastewater treatment, RO water purification, cooling water systems, and various chemical processing applications. Each system integrates chemical storage, solution preparation, mixing, metering, and automatic control into one compact unit, ensuring safe and reliable operation.
With PLC automation and high-precision metering pumps, our dosing systems deliver consistent chemical injection while minimizing manual intervention and operating costs.

The full automatic three cavity flocculant preparation system, it can divideinto preparation tank, maturing tank and dosing tank, it can manual controlor automatic control, it is mature products In order to introduce the foreignadvanced technology professional processing and manufacturing, special-ized used in online dissolve, maturing, storage dosing industry. Its struc-ture compact, it can full automatic operation, the flocculant preparation con-centration is 0.1-0.5%.




Chemical dosing is one of the most critical steps in water treatment. Incorrect dosing can lead to unstable water quality, excessive chemical consumption, equipment corrosion, or failure to meet discharge standards.
An automatic dosing system eliminates these problems by continuously delivering the correct amount of chemicals based on system requirements.
Compared with manual chemical addition, automatic dosing provides:
● Higher dosing accuracy
● Reduced chemical waste
● Stable treatment performance
● Lower labor requirements
● Improved operational safety
● Continuous automatic operation
● Easy integration with existing treatment systems
Whether dosing coagulants, flocculants, disinfectants, acids, alkalis, or nutrients, an automatic dosing system ensures consistent process performance.
Automatic Chemical Dosing System, also called a Chemical Dosing Unit or Chemical Dosing Equipment, is an integrated solution used to automatically prepare and inject chemicals into water treatment processes.
The system typically includes:
● Chemical storage tank
● Mixing tank
● Agitator
● Metering pump
● Level sensor
● Flow meter (optional)
● PLC control cabinet
● Pipeline and valves
Depending on the application, the dosing system can automatically adjust chemical dosage based on flow rate, pH, ORP, residual chlorine, conductivity, or other process parameters.
The modular design allows easy installation and future expansion.






The dosing process is fully automated and consists of several coordinated steps.
1. Chemical Preparation
Chemicals are stored in the dosing tank. Powder chemicals can be automatically dissolved, while liquid chemicals are mixed to achieve the required concentration.
2. Mixing
An electric agitator continuously mixes the solution to ensure uniform concentration before dosing.
3. Metering
A high-precision metering pump injects the prepared chemical solution into the treatment pipeline at a controlled flow rate.
4. Automatic Monitoring
Sensors continuously monitor operating parameters such as flow rate, pH, ORP, conductivity, or residual chlorine.
5. Intelligent Control
The PLC automatically adjusts the dosing rate based on real-time data, ensuring optimal chemical consumption and stable treatment performance.
Accurate Chemical Dosing
High-precision metering pumps provide stable and repeatable dosing performance, minimizing chemical waste.
Fully Automatic Operation
PLC control enables unattended operation with automatic start, stop, alarm, and dosing adjustment.
Compact Integrated Design
The complete dosing system is skid-mounted for quick installation and reduced footprint.
Flexible Configuration
Different tank sizes, pump capacities, and control modes can be customized according to project requirements.
Corrosion-Resistant Materials
Available in PE, PP, PVC, FRP, stainless steel, or other materials compatible with various chemicals.
Safe Operation
Equipped with level protection, leakage protection, overload protection, and emergency shutdown functions.
Easy Maintenance
Modular equipment layout simplifies inspection, maintenance, and replacement of components.
Energy-Efficient
Optimized pump operation reduces power consumption while maintaining precise dosing performance.
Item |
Specification |
Product Name |
Automatic Chemical Dosing System |
Dosing Capacity |
Customized (10–10,000 L/h) |
Tank Volume |
100–5000 L (Customizable) |
Tank Material |
PE, PP, PVC, FRP, Stainless Steel |
Metering Pump |
Diaphragm / Plunger Type |
Mixing Method |
Mechanical Agitator |
Control System |
PLC Automatic Control |
Power Supply |
220V / 380V / 415V / 440V / 480V |
Installation |
Skid-Mounted |
Application |
Water & Wastewater Treatment |
Chemical Type |
Liquid or Powder Chemicals |
Warranty |
1 Year |

Q1:What chemicals can the system dose?
A:It supports most common treatment chemicals, including PAC, PAM, sodium hypochlorite, acids, alkalis, antiscalants, biocides, and nutrient solutions.
Q2:Can the dosing rate be adjusted automatically?
A:Yes. The system can automatically adjust the dosing rate based on flow signals or online instruments such as pH, ORP, conductivity, or residual chlorine analyzers.
Q3:Is the system suitable for industrial wastewater treatment?
A:Yes. It is widely used in industrial wastewater, municipal sewage, RO pretreatment, cooling water treatment, and many other applications.
Q4:Can multiple chemicals be dosed simultaneously?
A:Yes. We can provide single-channel, dual-channel, or multi-channel dosing systems depending on your project requirements.

Precise and reliable chemical injection solutions with PLC automatic control, designed for industrial water treatment, wastewater treatment plants, and various chemical dosing applications.
· Full-process intelligent automatic control
· Easy operation & user-friendly control
· Integrated compact structure, small footprint and simple on-site installation
· Fully sealed system for chemical mixing and dosing
· Flexible modular design, expandable to support dosing of multiple types of chemicals on demand
· Standard anti-corrosion tanks made of PE/PP
· Optional tank bodies and wetted parts in 304/316 stainless steel, PVDF and FRP
· No full-time professional chemical operation technicians required
· ODM customization available from the original manufacturer
· Core components sourced from reputable brands, ensuring stable operation and low failure rate
Tel
Address
Workshop 6, No. 88 Yueyahe Road, Huangdao District, Qingdao City, Shandong Province, China