How Franklin Electric’s series-mounted Multistage Pumps can optimize reverse osmosis systems
Reverse Osmosis in Pharmaceutical Water Systems
Reverse osmosis (RO) is the premier filtration technique widely used in pharmaceutical water systems for its effectiveness in removing particles and contaminants. Utilizing a semi-permeable membrane, the RO system allows water to pass while retaining impurities. The process requires a driving force, applied as pressure via pumps, to propel water through the membrane.
In this system, an EV pump introduces water into a series of membranes, functioning as filters to separate the liquid into two streams: the ‘permeate’ (purified water) and the ‘retentate’ (waste liquid). To optimize efficiency and conserve resources, the retentate can be recirculated through another pump, minimizing energy consumption and material usage.
Advantages of Reverse Osmosis:
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Comprehensive removal of contaminants, including dissolved substances and minerals.
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Physical filtration without phase change, preserving energy and maintaining room temperature.
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Least energy-intensive among water treatment methods, relying solely on water pressure.
Meeting the Technical Demands of High-Pressure RO Systems
Given the high technical demands of RO systems, components must adhere to the highest standards of performance, materials, and flexibility. Franklin Electric’s Vertical Multistage Pumps are exemplary in this regard. The Stainless Steel construction offers exceptional resistance and reliability, minimizing downtime due to component replacement. Their superior performance and broad range of flow rates (up to 115 m³/h for the EV series) ensure precise pressure modulation to meet system requirements.
Franklin Electric offers a specialized High-Pressure system incorporating two vertical multistage pumps mounted in series, constructed from full AISI316 Stainless Steel with Victaulic pipe connections. This innovative setup allows Franklin Electric to achieve extremely high pressure that a single pump cannot match, due to the reinforced construction of the second pump, featuring a high-thickness casing and balanced mechanical seal. Victaulic collars enable the system to withstand pressures up to 50 bar.
A horizontal multistage pump (EH) is included on the same skid to recirculate retentate water, enhancing filtration efficiency and preventing water wastage. This configuration ensures optimal filtration performance, making the most of available resources.
The Ideal Choice for Water Purification
Franklin Electric’s dual Vertical Multistage in series pumps provide a robust, reliable solution for reverse osmosis systems, ensuring high-pressure delivery and efficient filtration. The combination of superior materials, advanced design, and energy-saving recirculation makes these pumps the ideal choice for pharmaceutical and other water purification applications.
