2025 Nelsen Corporation Catalog - Catalog - Page 100
3 Nelsen Water Solutions Anion Exchange Systems
Filtration Equipment
Nelsen Water Solutions Anion Exchange Systems
Anion exchange treatment systems are specialized filtration units designed to remove negatively
charged contaminants, known as anions, from water.
These systems are used in residential, commercial, and industrial applications to improve water quality
and safety by removing contaminants such as Arsenic, Sulfates, and Nitrates.
ARSENIC SYSTEMS
NWS-ARSENIC systems utilize ResinTech’s ASM-10-HP ion exchange resin, ASM-10-HP is a chloride form
arsenic selective hybrid anion exchange resin. ASM-10-HP has hydrated iron oxide monoatomically
dispersed throughout the polymer giving the product hybrid properties and exceptional capacity for
certain anions. ASM-10-HP is intended for arsenic removal although it does remove uranium and other
trace level contaminants. ASM-10-HP has been Gold Seal Certified by the WQA for use in potable water
applications. Under ideal conditions ASM-10-HP will reduce 50 ppb of arsenate to less than 10 ppb for
more than 500,000 gallons per cubic foot. Limiting factors are high pH, high silica concentration, and
high sulfate concentration. Capacity can also be reduced by intermittent operation and various foulants,
notably suspended solids.
For optimal performance, it is recommended to install two vessels in a lead/lag configuration. The GPM
can be increased by adding more systems in parallel.
Systems feature the Nelsen Water Solutions proprietary 1" metered control valve to monitor gallons
usage and includes programmable service reminder that can be set to time, gallons, or both, polyglass
mineral tank, system bypass, and ASM-10-HP resin.
NWS-ARSENIC-6
NWS Arsenic Reduction System - 6 GPM = 10" x 54" System
NWS-ARSENIC-10
NWS Arsenic Reduction System - 10 GPM = 13" x 54" System
SULFATE SYSTEMS
Sulfate occurs naturally in many groundwater sources. As water moves through soil and rock formations
containing sulfate minerals, some sulfate dissolves into the groundwater.
Problems associated with water high in Sulfates include a bitter taste and a laxative effect on humans.
High Sulfate levels also contribute to the corrosion of plumbing, particularly copper.
The U.S. EPA has established a secondary drinking water standard of 250 ppm for Sulfates.
NWS-SULFATE systems utilize ResinTech's SBG2-HP, a high purity chloride form type 2 gel strong base
anion resin. The HP (high purity) designations means it is Gold Seal Certified by the WQA for use in
potable water applications. Type 2 resins are less likely to have a taste or odor than type 1 resins.
Systems feature the Nelsen Water Solutions proprietary 1" metered control valve, polyglass mineral tank,
system bypass, and SBG2-HP resin. Includes charcoal brine tank with Clack 474 safety valve.
NWS-SULFATE-6
NWS Sulfate Reduction System - 6 GPM = 10x54 with 1517 Brine Tank
NWS-SULFATE-10
NWS Sulfate Reduction System - 10 GPM = 13x54 with 1840 Brine Tank
NITRATE SYSTEMS
Nitrates are naturally occurring compounds that are formed when organic matter decomposes and is
also found in fertilizers. Nitrates are very soluble and do not bind to soils, so they can easily get into
groundwater. Nitrates in drinking water are colorless, odorless, and tasteless.
High Nitrates in water can cause serious illness, especially in babies, children, and adults with a certain
type of enzyme deficiency.
The U.S. EPA recommends that well users test their water every 1 – 3 years and has set Maximum
Contaminate Levels (MCL) for Nitrates in water at 10 ppm.
NWS-NITRATE systems utilize ResinTech's SIR-100-HP, a Chloride form microporous nitrate selective
strong base anion resin. Gold Seal Certified by the WQA for use with potable water. Its unique
functionality increases the selectivity for nitrate and decreases selectivity for sulfate, resulting in higher
operating capacity and lower leakage than type 1 or type 2 anion resins.
Systems feature the Nelsen Water Solutions proprietary 1" metered control valve to monitor gallons
usage and includes programmable service reminder that can be set to time, gallons, or both, polyglass
mineral tank, system bypass, and SIR-100-HP resin. Includes charcoal brine tank with Clack 474
safety valve.
NWS-NITRATE-6
NWS Nitrate Reduction System - 6 GPM = 10x54 with 1517 Brine Tank
NWS-NITRATE-10
NWS Nitrate Reduction System - 10 GPM = 13x54 with 1840 Brine Tank
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