Polymer Dosing Systems – Automated Precision Solutions

What is a polymer dosing system?

Polymer dosing systems are used to accurately and automatically inject liquid or powdered polymers into wastewater treatment processes, in order to enhance flocculation, settling, and sludge dewatering.

They are commonly used in:

• Municipal wastewater treatment plants
• DAF units (Dissolved Air Flotation)
• Sludge dewatering stations
• Various industries: food & beverage, chemical, pulp & paper, and more

 

How does a polymer dosing system work?

A typical system includes:

• A polymer tank (for concentrate or prepared solution)
• One or more dosing pumps (diaphragm or peristaltic)
• Level and flow sensors
• An automated control unit (PLC)

The amount of polymer injected is automatically adjusted in real time, based on:

• The flow rate of water to be treated
• The sludge characteristics

This ensures:

• Optimal treatment efficiency
• Reduced chemical consumption
• Stable process performance

 

Advantages of Waste & Water Dosing Systems

• Precise and reliable dosing, even at low flow rates
• Suitable for liquid or powder polymers
• Fully automated control via Simatic PLC
• Easy integration with SCADA or existing systems
• Quick installation (plug & play options available)
• Durable construction in stainless steel or HDPE, resistant to chemicals
• Low maintenance requirements

 

Technical Specifications – Standard Models

Model	Polymer Type	Dosing Flow Rate (L/h)	Dosing Pump Type	Construction Material	Interface
WW-DOS/05/IS	Liquid or Powder	10–100	Diaphragm (SS)	SS304	PLC + Touchscreen
WW-DOS/10/IS	Liquid	20–200	Peristaltic	HDPE + SS	PLC + Relay Control
WW-DOS/20/IS	Liquid	50–500	Dual Head	SS316	Simatic PLC (S7 Series)

Other flow rates and options available upon request:

• Turbidity sensors
• pH/Redox modulation
• Dual injection systems

 

Applications

• Sludge thickening and dewatering
• Physico-chemical treatment processes
• DAF systems (air flotation)
• Polymer preparation and controlled dosing
• Neutralization processes

 

Integration into Your Facility

Our systems can be:

• Mounted on stainless steel skids for mobile or outdoor installation
• Integrated into existing panels or treatment lines
• Delivered with automation and wiring diagrams

We also provide:

• On-site commissioning
• Team training
• Remote or on-site technical support

 

FAQ – Polymer Dosing Systems

💬 Can I dose both liquid and powder polymers with the same system?

No. Powdered polymers require preparation units (such as our 3-chamber preparation systems). Dosing is done from the diluted solution.

 

💬 What type of pump is recommended?

It depends on the product and flow rate:

• For low flow rates and aggressive products: diaphragm pumps
• For viscous liquids: peristaltic pumps
• For high-precision continuous dosing: progressive cavity pumps (eccentric screw)

 

💬 Can the system operate automatically based on incoming flow?

Yes. Our PLCs support automatic modulation of dosing based on analog signals (4–20 mA) from flow meters or sensors.

 

💬 Can this system be integrated into an existing treatment plant?

Absolutely. All models are designed for modular integration, with flexible connection options.

 

💬 What is the expected lifespan of a polymer dosing system?

With basic maintenance, service life typically exceeds 10–15 years, thanks to robust industrial-grade components and materials.