Chemical Dosing Pump for Water Treatment Plant

In any water or wastewater treatment plant-whether a municipal plant, industrial facility, or RO desalination unit-reliable chemical dosing is non-negotiable. Under-dosing risks poor effluent quality; over-dosing wastes money and may violate discharge limits. Our industrial chemical dosing pump for water treatment plants deliver ±2% accuracy, corrosion-resistant performance, and seamless integration with DAF units, clarifiers, sludge dewatering machines, and reverse osmosis skids. Trusted by engineers across 20+ countries for continuous, trouble-free operation.

Our chemical dosing pump offers high performance with a capacity up to 500L/H and with outstanding values for pressure applications up to 12 Bar. Durable and cost-effective, they are suitable for numerous industries, including water treatment, chemicals, power generation, food and beverage, papermaking, and textiles.

* Chemical-Specific Material Selection: Pump heads, diaphragms, and valves matched to your chemical-PTFE for chlorine, PVDF for acid, Santoprene for PAM emulsions.
* Stable Flow Under Pressure Fluctuations: Maintains accuracy even when back pressure varies (e.g., during filter backwash or membrane fouling).
* System-Ready Integration: Pre-wired with 4–20mA, pulse, or Modbus for direct connection to your PLC, SCADA, or existing chemical dosing skid.
* Low Maintenance & Leak-Free Design: Double-diaphragm or hydraulic diaphragm technology eliminates seal leaks-critical for hazardous chemicals.
* Wide Flow Range: From 0.5 L/h (antiscalant in small RO) to 10,000 L/h (PAC in large municipal plants).
* Global Compliance: CE certified, ISO 9001 manufactured, and ATEX optional for hazardous zones.

1. Solenoid-Driven Metering Pumps

* Ideal For: Low-flow, intermittent dosing in small-scale systems.
* Typical uses: Antiscalant in RO, pH correction in drinking water, nutrient dosing in MBR.
* Flow Range: 0.5 – 20 L/h

* Max Pressure: 10 bar

2. Motor-Driven Mechanical Diaphragm Pumps

* Ideal For: Continuous, high-pressure applications in industrial and municipal plants.
* Typical Uses: PAC/PAM dosing for DAF or sludge dewatering, sodium hypochlorite disinfection, acid/alkali neutralization.
* Flow Range: 5 – 5,000 L/h

* Max Pressure: 20 bar

* Coagulants: Polyaluminum Chloride (PAC), Ferric Chloride, Alum
* Flocculants: Polyacrylamide (PAM) – anionic, cationic, non-ionic (powder, emulsion, liquid)
* pH Adjusters: Sulfuric Acid (H₂SO₄), Hydrochloric Acid (HCl), Sodium Hydroxide (NaOH)
* Disinfectants: Sodium Hypochlorite (NaOCl), Chlorine Dioxide (ClO₂)
* RO Pretreatment: Antiscalants, Dechlorination agents (sodium bisulfite)
* Others: Defoamers, corrosion inhibitors, phosphate, fluoride

We understand your chemical dosing pump doesn't operate in isolation. That's why we design for real-world system compatibility:
* Pre-tested with common water treatment controllers (Siemens, Allen-Bradley, Schneider)
* Mounting brackets compatible with standard chemical skids
* Optional accessories: pulsation dampeners, back-pressure valves, foot valves, calibration cylinders
* Full documentation: wiring diagrams, material compatibility charts, maintenance manuals

With over 20 years specializing in water and wastewater equipment, we don't sell "off-the-shelf" chemical dosing pumps-we provide application-engineered solutions. Every order includes:
* Free chemical compatibility review (send us your SDS)
* Pump sizing based on your flow, pressure, and chemical data
* Factory testing under simulated operating conditions
* Global technical support in English and Chinese
* 24-month warranty, fast spare parts delivery worldwide

Get a chemical dosing pump that lasts, performs, and integrates-without guesswork.

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Q1: Can your Chemical Dosing Pump handle viscous cationic PAM without clogging?

A: Yes. For PAM (especially emulsions or high-molecular-weight powders), we recommend motor-driven diaphragm pumps with oversized check valves and Santoprene diaphragms. We also advise dilution to ≤0.3% concentration and use of low-shear mixers upstream.

Q2: How do I connect the pump to my existing control system?

A: All our pumps come with standard 4–20mA input for remote flow control. For digital integration, we offer Modbus RTU (RS485) or Modbus TCP (Ethernet). Just share your PLC model-we'll provide wiring diagrams.

Q3: What's the typical lifespan of a Chemical dosing pump in a Water Treatment Plant?

A: With proper chemical compatibility and routine maintenance (diaphragm replacement every 12–24 months), our pumps operate reliably for 5–10 years.