Filmtec BW30-8040 elements have been used for the past 21 years at the Antelope Valley Station, a lignite coal-based power plant in North Dakota operated by Basin Electric Power Cooperative. In 1992, the plant sought a cost-effective solution to treat feedwater from its Lake Sakakawea source — a reservoir of Missouri River water.
RO membranes provide power plant with cost-effective, environmentally friendly treatment
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The Sartoguard NF prefilter series features high-performance polyethersulfone membranes and nanofleece technology, which offer enhanced clarification capabilities, along with a high dirt-holding capacity, fast flow rates and high total throughput performance. The prefilters offer cost-saving potential due to their ultra-fine retention performance, which ensures removal even of extremely small particulate-based contaminants.
The Lewabrane RO line consists of spiral-wound, thin film composite membrane elements designed specifically for industrial applications. The membrane chemistry and element construction are designed to provide optimized, low cost of operation for downstream unit operations, like separate- or mixed-bed ion exchange units. The elements comply with NSF/ANSI Standard 61.
Axeon Water Technologies features a range of economical and high-quality membrane chemicals that are specially formulated to treat a variety of feedwater conditions for commercial and industrial applications. The membrane chemicals are compatible with all brands and types of RO, NF and UF membranes. They provide antiscaling and antifouling capabilities to prolong the life of membranes and are certified under ANSI/NSF Standard 60 for drinking water production.
Filmtec RO 75- and 100-gpd home drinking water membranes help remove contaminants and reduce impurities. With a stabilized salt rejection rate of 99% at 75 gpd and 98% at 100 gpd, in standard sizes, the BW-60-1812-75 and TW30-1812-100HR home drinking water elements produce high-quality water quickly. The elements offer a balance of flow and high rejection, producing more water with 20% higher flow rates.
The 3M Pro RO drinking water filtration system uses multistage filtration and includes a high-pressure booster that keeps consistent pressure. It is able to deliver 36 to 50 gal of clean water per day. The system has an electronic pressure switch set to activate at 40 psi and shut off at 60 psi. It is compact and can be installed centrally in a home. With its quick tank recovery, the system is convenient for sinks in kitchens, baths, wet bars and refrigerators.
The NRO Commercial Series of reverse osmosis systems are custom built by Nelsen Corp. to customers’ specifications. NSF-grade high quality parts are used to build these systems. All Nelsen NRO Commercial Systems are wet tested to optimum pressure and production prior to shipment, and they are delivered with individual quality assurance reports to show actual performance data on outputs and rejections.
Membrane processes can be classified in many ways, based on nature, structure or driving force. Hydrostatic pressure differences are used in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO) and gas separation as the driving force for mass transport through the membrane.
Growing range of applications spans the water treatment spectrum
AXEON L1-Series RO systems feature a sleek, compact design that is easy to mount and service. Ranging from 200 to 300 gpd, the L1-Series systems come equipped with fiber-reinforced plastic housings that resist various climate conditions, as well as AXEON Extra Low Energy HF4 Membranes that can provide high production with high rejection and extra-low energy consumption.