Ion Exchange Water Filter from NEWater

Our ion exchange water filters can perform purification and soften water simultaneously. They work on advanced RO technology along with powerful resins. The cationic and anionic resins are effective for the elimination of positively and negatively charged ions, respectively.

Some of the unwanted ions removed from water by our ion exchange systems are manganese and iron. Besides, our systems are ideal for treating hard water with the elimination of magnesium and calcium.

Further, they replenish beneficial salts and H and OH ions in the water. These H and OH ions get combined and form H2O or pure consumable water. Our ion exchange filters can be used as standalone solutions or along with other purification systems for better results.

So, if you need a deionized and purified water supply for your home and business, contact NEWater immediately.

The Ultimate FAQ Guide for Ion Exchange Water Filters.

Numerous technologies have been developed to decontaminate, purify or treat polluted water sources. From these diverse options, customized water treatment solutions are developed to eliminate target contaminants and gratify the portable water quality standards of dissimilar clients.

The presence of ionized impurities in virtually all natural water sources constrains their application fields. The most effective and popular mechanism exploited to filter out these ionic elements over the years has been ion exchange. This article seeks to grow your understanding of ion exchange water filters by expertly answering the internet’s most asked questions.

➣What is an Ion Exchange Water Filter?

An ion-exchange water filter is a water filtration unit that utilizes beaded-exchange resins to seize and exchange charged contaminants for non-objectionable ions. Ion exchange water treatment systems are quite popular as water softening or water deionization systems. They essentially capture charged elements, which are very common in natural water, and ultimately swap them for desirable ions.

The ion exchange resins in ion exchange water softeners are primarily charged with sodium ions while the deionization resins are separately charged with hydrogen and hydroxyl ions. The reliability of ion exchange water filters is chiefly responsible for their prominence, which transcends residential, industrial, and commercial applications.

➣How do Ion Exchange Water Filters Function?

Ion exchange water filters function by replacing unwanted ionic constituents with less harmful ions, which hardly water down the water’s quality. Ideally, the ion exchange filters, which are essentially ion exchange resins made of miniature polystyrene beads, are permanently charged with less objectionable ions. The resin beads are characteristically porous and their diameter measures approximately 0.5 millimeters.

The ion exchange water filters are primarily held in pressure vessels. When hard water or ionized water is fed into the pressure vessel, it permeates through the charged resin beads. The fixed ions on the resin bead have a relatively higher affinity compared to the counter ions hence they attract the dissolved ions in the water. Subsequently, the objectionable ions get attached to the fixed ions on the resin beads while the non-polluting ions assume their position in the water.

Technically, hydrogen (H+) and hydroxyl (OH-) ions are permanently fixed on the deionization resin beads while sodium (Na+) ions are attached to the water softener resin. Due to the exhaustion of the resin beads, a regeneration process is periodically enforced to displace the captured pollutant ions and ultimately revitalize the ion exchange filter. Here is a visual explanation of the process.

➣What are the Advantages of Ion Exchange Water Filters?

Ion exchange water filters are without a doubt one of the most effective water filtration systems when it comes to dissolved ions. They provide reliable solutions to devastating problems like water hardness and iron presence. By softening your water, the ion exchange filters save you the extra cost of buying more washing detergent or repairing/replacing worn-out pipes and essential appliances.

Moreover, they improve the quality of your water at economical and affordable rates. The energy consumption of IX water filters is pretty low and the regeneration chemicals necessitated are quite inexpensive. The additional advantages of ion exchange water filters include:

• They eliminate varying pollutants including nitrates, iron, and arsenic.
• They are easy to operate thanks to their simple designs.
• They are very effective and can lower water hardness to 2ppm.
• They can regenerate automatically.

➣What are the Distinct Types of Ion Exchange Water Filters?

Primarily, ion exchanger water filters can be categorized as either water softeners or water deionizers.

● Water softeners.

Water softener systems chiefly utilize ion exchange filters to get rid of magnesium Mg⁺ and calcium Ca⁺, which are the primary sources of water hardness. These filters are characteristically made of cation exchange resins since the target constituents are largely cationic impurities. sodium (Na⁺) are fixed on the resin beads as the counterions while sulfonate (SO3-) ions are permanently fixed on the beads. Potassium (K⁺) ions can alternatively be used since they hardly precipitate to form scales.

● Water deionizers.

Ion exchange resins comprising non-pollutant ions (hydrogen H+ and hydroxyl OH-) are commonly deployed in water deionizer systems to displace objectionable ions. They are mainly used to produce deionized or demineralized water for laboratory and pharmaceutical uses. These ion-exchange filters are further divided into:

● Mixed-bed deionizers.

In mixed-bed deionizers, both the anionic and cationic exchange resins are intimately accommodated in a single exchange vessel. This blend augments their productivity but due to their sensitivity to distinct contaminants, they are largely used as post-treatment systems for two-bed deionizers.

● Two-bed deionizers.

In two-bed deionizers, the anionic exchange resin is held in a separate vessel to the cation exchange resin. The feedwater is first introduced to the cation exchange vessel where positive ions are swapped for hydrogen (H+) while the negative ions are replaced with hydroxyl (OH-) ions.

➣Where are Ion Exchange Water Filters Chiefly Used?

In the wake of adverse water undersupply, the alternative sources most people have turned to harbor varying concentrations of pollutants. The majority of these pollutants are made of atoms whose ionic bonds are broken down by the water’s ionic bond resulting in the loss or gaining of electrons.

The positively charged ions in the water are referred to as cations while the negative ones are referred to as anions. As the name suggests, ion exchange filters are specialized to dislodge the objectionable ionized impurities from water. As such, they are primarily used to soften hard water and purify water through deionization. The following sectors are the chief consumers of ion exchange water filters.

• Residential and business complexes.
• Boiler feed water.
• Cooling towers.
• Well water treatment.
• Wastewater treatment.

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➣What are Ion Exchange Water Filters Made of?

Primarily, ion exchange water filters comprise ion exchange resins, which in turn comprise micro-perforated beads. These ion-exchange resin beads are virtually insoluble in organic solvents and water. Customarily, the base material used to manufacture ion exchange resin beads are polyacrylate and polystyrene and the beads typically have a diameter ranging from 0.3 mm to 1.3mm.

The ion exchange resin beads are then charged with non-pollutant ions, which can either be cationic or anionic. In water deionizer filters, the resins are charged with hydrogen (H+) ions and hydroxyl (OH-) ions. The positively charged resin beads are classified as cation exchange resins while the negative ones are categorized as anion exchange resins. The IX filter is then housed in a pressure vessel but the configuration might include a single vessel or twin vessels.

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➣What Should I Look for When Buying Ion Exchange Water Filters?

From our earlier discussion, we have established that there are distinct types of ion exchange water filters. Therein, being cautious when selecting your perfect ion-exchange water filter is mandatory. Beneath, we discuss the primary variables you should look out for when procuring ion exchange water filters.

● The composition of your feed water.

Understanding the type of contaminants present in your feed water will help you choose the ideal ion exchange filter, pretreatment system, and post-treatment system if need be. For water softening, you can acquire a strong acid cation resin filter.

● The water quality you desire.

The distinct ion-exchange filters generate distinct qualities of product water. For instance, mixed-bed ion exchangers provide a higher grade compared to two-bed ion exchangers. In addition, you can order a post-treatment system that will condition the water to your liking.

● The exchange capacity.

The exchange capacity, which is primarily measured in grains, depicts the volume of water your ion exchange filter will be processing in a stipulated period. The range you opt for should comfortably match the quantity demands of your application.

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➣What is The Exchange Capacity of Ion Exchange Water Filters?

The exchange capacity measures the ability of your ion exchange water filter to exchange unwanted ions for non-pollutant ions over set periods of time. NEWater manufactures ion exchange cartridges with exchange capacities ranging from 450 Grains to 3000 Grains and service flow rates ranging from 0.13 GPM to 1.25 GPM.

In addition, we manufacture distinct ion exchange water treatment systems with varied exchange capacities to promptly address all your demands. Our commercial and industrial ion exchange systems have standard capacities ranging from 450 Grains to over 4,000K Grains and flow rates capped at 1000 GPM.

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➣Which Pollutants Are Eliminated by Ion Exchange Water Filters?

The primary pollutants ejected from water using ion-exchange processes are dissolved ionized elements. However, they eliminate a range of unwanted contaminants when deployed in tandem with other water treatment systems. The majority of waterborne contaminants are broken down into atoms, which contain either positive or negative charges.

The ion exchange resin beads exploit their high affinity to attract the cationic and anionic impurities ultimately substituting them with the non-pollutant ions. In addition to eliminating dissolved ions, the ion exchange filters also eradicate volatile metals such as iron (Fe2+). Here is a list of the pollutants dislodged by IX water filters.

• Alkalinity.
• Fluoride.
• Water hardness.
• Silica.
• Chloride.
• Radium.
• Sulfate.
• Arsenic.
• TDS reduction.
• Organics reduction.

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➣How Do You Regenerate Ion Exchange Water Filters?

The active sites on the ion exchange resin become overwhelmed once the pollutant ions attach to most of the active sites. This makes the ion exchange water filter exhausted and the only resolution is to recharge the resin beads. Ideally, an appropriate chemical regenerant is flushed through the resin bed. This process is either accomplished using the reverse flow regeneration process or the co-flow regeneration process.

● The reverse flow process.

It is also referred to as the counter-flow process. The regeneration chemical is introduced backward unlike the normal service flow. It is commonly used with packed-bed ion exchange columns and is efficient in the use of regeneration chemicals.

● The co-flow process.

This process sees the regeneration chemical share the same flow as the normal service flow (usually from top to bottom). It is not advisable to use this process when treating enormous flows or when you desire higher quality.

The regeneration process is however enforced in multiple stages as discussed below.

● Backwash.

This is the cleaning mechanism used to dislodge particles stuck on the resin bed and to rearrange the resin beads.

● Injection of the regeneration solution.

At a relatively lower flow rate, the chemical regenerant is flushed through the ion exchange column thereby allowing sufficient contact with the resins. The process of regenerant injection in two-bed IX filters is different from the one in mixed-bed IX filters.

● Displacement of the regeneration solution.

Dilution water is slowly injected into the IX column to flush out the regeneration solution. This is primarily done in a stage referred to as the slow rinse.

● Final rinse.

Finally, water is flushed through the resins at a flow rate similar to the typical service cycle. The water is flushed through until you attain a specific water quality.

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➣Is it Advisable to Consume Water Generated by Ion Exchange Water Filters?

Ion exchange water filters virtually eliminate all ionized constituents from water including minerals. While we drink water to quench our thirst, we also need the essential minerals it harbors. Demineralized water lacks these essential minerals and its consumption especially by patients with certain dietary problems could be costly.

However, the consumption of deionized water has no serious health implications. Most people find it tasteless and uninspiring to consume. Adding measured amounts of the essential minerals through remineralization can however make deionized water fresh and healthy drinking water.

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➣What Is The Difference Between Ion Exchange Water Filters and Electrodeionization Systems?

Although both ion exchange water filters and electrodeionization systems are primarily used to eradicate ionized substances, the two technologies have massive differences. EDI water systems are essentially driven by electricity while ion-exchange filters utilize chemical regenerants. Water electrodeionization is achieved using both ion exchange resins and ion exchange membranes hence the water quality is comparatively higher.

As such, EDI water systems are often deployed to refine the quality of water generated by the ion exchange filters. They can generate ultra-pure water with an impressive resistivity of up to 18.2MW/cm. Ion exchange filters customarily demand periodic regeneration whereas electrodeionization water systems hardly necessitate resin regeneration.

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