What type of pump is utilized for feeding liquid fluoride or liquid chlorine in water treatment systems?

The positive displacement diaphragm metering pump is specifically designed for accurately dosing chemicals like liquid fluoride or liquid chlorine in water treatment systems. This type of pump operates by drawing a set volume of liquid in and then forcing that liquid out, ensuring precise control over the quantity being delivered. This precision is crucial in water treatment processes, where maintaining correct chemical concentrations is necessary for safety and compliance with health regulations.

These pumps are particularly effective for viscous fluids or applications where backpressure may vary, as they can maintain a consistent output regardless of the pressure in the system. This characteristic makes them ideal for chemical feeding, where maintaining a steady and known concentration of disinfectants is vital for effective treatment.

While centrifugal pumps are commonly used in many water treatment applications due to their ability to move large volumes of water efficiently, they lack the precise control needed for chemical dosing. Diaphragm metering pumps also offer accuracy, but the positive displacement type is typically preferred when dealing with chemicals like chlorine or fluoride due to its design features that enhance efficiency and reliability in small scale dosing applications. Peristaltic pumps, although able to handle corrosive chemicals, often aren't the first choice for primary disinfection chemical dosing because they may not provide the same level of precision required in