English 
In modern wastewater engineering, chemical stoichiometry is the difference between efficient compliance and wasteful operation. An Automatic Dosing System (also known as a Polymer Preparation Unit or Chemical Dosing Unit) is an engineered assembly designed to accurately dissolve, mix, and dose dry powders or liquid chemicals—such as Polyacrylamide (PAM), Polyaluminum Chloride (PAC), or flocculants—into water treatment processes.
These systems replace inconsistent manual dosing with automated precision, ensuring the optimal chemical-to-water ratio. For industries facing strict environmental regulations, utilizing an Industrial Automatic Dosing System is essential for optimizing coagulation, flocculation, and sludge dewatering processes while significantly reducing chemical consumption costs.
At Qingdao Yimei, we engineer solutions catering to various chemical properties and viscosity requirements.
Integrated Three-Chamber Dosing Systems:The industry standard for polymer preparation. These units feature a continuous flow design with three distinct zones: a preparation tank (mixing), a maturation tank (aging), and a storage tank (dosing). This ensures the polymer chain is fully extended before injection, maximizing flocculation efficiency.
Simple Dosing Stations:Designed for liquid-to-liquid dosing (such as acids, alkalis, or ready-made solutions). These compact units include a storage tank and a metering pump, ideal for pH adjustment or nutrient dosing in biological reactors.
Our equipment is built to withstand the harsh corrosive environments typical of wastewater plants.
Precision Metering: Equipped with high-accuracy screw feeders and flow meters, our systems prevent the common engineering headache of "over-dosing," saving clients up to 30% in annual chemical costs.
Robust Material Construction: We utilize high-grade 304/316 Stainless Steel for the tank body and agitator shafts, offering superior resistance to corrosive coagulants compared to standard carbon steel alternatives.
Intelligent Automation: The system features PLC control (Siemens/Schneider options) with liquid level sensors. It automatically triggers water intake and powder feeding when levels are low and stops when full, achieving true unattended operation.
Anti-Caking Design: The dry powder hopper includes a unique heating and vibration function to prevent powder agglomeration, ensuring a smooth, blockage-free feed.
The versatility of our dosing units allows them to serve critical roles across distinct sectors:
Pulp & Paper Industry: Essential for retention aid preparation and fiber recovery. The system ensures consistent polymer viscosity, which is critical for maintaining paper sheet formation quality.
Petrochemical & Chemical Processing: Used for dosing deemulsifiers and pH neutralizers. The explosion-proof options available ensure safety in hazardous zones.
Municipal Sewage Treatment: Paired with sludge dewatering screw presses or centrifuges. Precise PAM dosing maximizes the dry solids content of the sludge cake, reducing disposal volume.
Textile & Dyeing: crucial for dosing decolorizing agents. The system manages the rapid reaction times required to break down complex dye molecules in high-COD wastewater.
Selecting the right partner is as critical as selecting the right pump. As a premier China Automatic Dosing System Manufacturer, Qingdao Yimei offers distinct engineering value:
Competitive Economics: We provide a transparent Automatic Dosing System Price structure. By manufacturing core components in-house at our 36,000m² facility, we eliminate middleman markups without compromising on component quality (motors, pumps, PLCs).
Lifecycle Engineering Support: Unlike trading companies, we provide full technical schematics, 3D installation drawings, and remote commissioning support. If a metering pump diaphragm wears out after years of use, our centralized spare parts inventory ensures rapid global dispatch.
Customization Capability: We don't just sell off-the-shelf. We analyze your specific water flow (m³/h) and chemical consumption rates to size the tank and mixer speed precisely, preventing energy waste from oversized equipment.
