USF Stranco has released the PolyBlend M series liquid polymer feed system to handle the liquid/solid separation needs of water and wastewater treatment plants. The M Series combines motorised mixing technology with precise controls, a variety of pump offerings and an open-frame design.
The system is also capable of variable speed mixing and automatic dosage control with constant solution strength to meet a wide range of polymer feed application requirements. It is designed to handle new polymer developments, high molecular weights, different charge densities, and totally new chemistries. A constant speed motor is standard and variable speed drives are also available.
The series can be field adapted quickly as polymer needs change and new polymers are developed. Whether output is adjusted remotely via 4mA to 20mA signal at the unit, water flow and polymer feed increase and decrease together, automatically maintaining a constant solution strength. Primary and secondary dilution water are kept at the same ratio as output is adjusted
It uses multizone mixing. The first zone exposes the polymer to a high energy environment to minimise agglomeration. Reduced mixing energy in the second zone protects the fragile polymer chains from fracturing making more polymer available for work. The baffling is designed to create a tapered mixing regime.
Six sizes cover output ranges from 0.03L/min to 750L/min and 14 diaphragm, gear or progressive cavity polymer pumps are available. The open frame permits maintenance without disassembly.