Dual Bed Deionizer from NEWater

Compared to our reverse osmosis equipment, NEWater’s dual-bed deionizer has features such as complete ion removal, low pretreatment requirements, and low equipment cost. In the process of preparing high purity water, ion exchange technology has no alternative equipment at present. According to the different requirements of users, when the total salt content of the feed water is below 400mg/l, the output water quality is between 1.0-0.2us/cm. If the total salt content of the feed water is above 500mg/l, it can be desalinated jointly with an electrodialysis device, and the quality of water will be higher.

Our  Dual Bed Deionizer has excellent water quality with a resistivity of 10-18 megohms and a near-neutral pH of the effluent water. Also, the water quality is stable, a short period of time changes in operating conditions, such as feedwater quality or components, operating flow rate, etc., the mixed bed water quality is not significant. Even after repeated treatment of common resin, the effluent water quality can only reach about 16MΩ-cm, and the recovery rate can reach 99%.

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The Ultimate FAQ Guide for Dual-Bed Deionizers.

Virtually all water sources contain a distinct amount of objectionable pollutants that harbor their use in high-level product water applications. To convert the water into usable potable water, a series of water treatment processes and equipment are necessitated.

Dual-bed deionizers are contemporary solutions that facilitate the continuous supply of deionized water for laboratories, industries, and commercial entities. Beneath, we unravel the composition and primary applications of dual-bed deionizers.

➣What is a Dual Bed Deionizer?

A dual-bed deionizer is a set of water deionization equipment characterized by two separate vessels housing anionic exchange resins and cationic exchange resins respectively. Dual-bed deionizers typically utilize the ion exchange process to filter out charged constituents from your feed water.

The cation exchange resin is characteristically accommodated in one of the two pressure vessels and it harbors hydrogen (H+) ions. The anion exchange resin on the flip side is housed in the adjacent pressure vessel and it characteristically comprises hydroxyl ions (-OH). The water generated by dual-bed deionizers is essentially categorized as deionized or demineralized water owing to the low or non-existent mineral concentration.

➣What are the Standard Features of Dual-Bed Deionizers?

The outstanding attribute that characterizes dual-bed deionizers is their distinct configuration that comprises two distinct exchange resins housed in two separate di exchange tanks. They carry out the deionization process in separate vessels first subjecting the feed water to cation exchange resins.

Dual-bed deionizers will customarily generate high-quality deionized water with a considerably high electrical resistivity. However, the quality of their demineralized water is not as impressive as that generated by mixed-bed deionizers (18.2 Megohm). They accommodate distinct flow rates and are endowed with diverse exchange capacities.

➣What are the Main Application Fields of Dual-Bed Deionizers?

Water deionization is undoubtedly one of the most economical ways to purify water. At a time when the demand for high purity water has exponentially mushroomed, water deionizer systems have become highly sought-after equipment.

The demand for dual-bed deionizers, in particular, transcends personal, industrial, and commercial application sectors. Despite being slightly ineffective in comparison to mixed-bed deionizers, they are quite cost-efficient.  Here is a list of the diverse application sectors dependent on dual-bed deionizers.

• Pharmaceuticals and laboratories.
• Cooling towers and boiler feed water.
• Household water softening.
• Electronics and cosmetics.
• Wastewater treatment.

➣How do Dual-Bed Deionizers Function?

The working principle utilized by dual-bed deionizers is essentially founded on ion exchange technology. The objectionable ionized elements are eliminated from the water through attraction and the consequential replacement with desirable ions. Initially, the feed water is driven into the cation exchange vessel where the exchange resin discharges hydrogen (H+) ions to take the place of the undesired cationic impurities.

Subsequently, the water devoid of virtually all cationic elements except hydrogen is injected into the anion exchange resin. Characteristically, this water has a pH concentration of 2 to 2.5. in the anion exchange vessel, OH- ions are emitted by the anion exchange resins and they virtually replace all negative elements. In the end, high-quality deionized water is harvested ready for immediate application. The underlying video will aid you to comprehend better the dual-bed deionization process.

➣What is the Exchange Capacity of Dual-Bed Deionizers?

The exchange capacity refers to the quantity of water your system can deionize over a certain period. Customarily, the exchange capacity of dual-bed deionizers and other deionization equipment, in general, is measured in Grains. NEWater understands the distinctness in the scales of operations for distinct application sectors hence we endow our dual-bed deionizers with diverse exchange capacities.

Our standard dual-bed deionizer systems are available in exchange capacities ranging from 40K Grains to 800K Grains. The production of dual-bed deionizers with lesser or greater exchange capacities is done on an order basis.

➣What Considerations Should I Make When Buying Dual-Bed Deionizers?

In buying a dual-bed deionizer or any other water treatment equipment, you need to exercise great caution to mitigate making wrong and costly decisions. The following are essential considerations formulated by our experts to guide your purchasing process.

What is the type and composition of your feedwater?

First, you must determine the source of your raw water, its composition, and concentration. With this information, you can choose the ideal pretreatment system and establish the customizations needed to match the system to the demands of your exclusive project.

What grade of product water do you desire?

Do you need ultra-pure water or less purified water? Knowing the quality of deionized water your application demands will help you establish whether you need a post-treatment system and which post-treatment system to choose. The other considerations include:

• The financial considerations.
• Your quantity projections.
• System design.

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➣Which Impurities do Dual-Bed Deionizers Eliminate?

The primary purpose of dual-bed deionizers is to alienate undesirable contaminants with electrical charges from water. The presence of both the cation and anion exchange resins in dual-bed deionizers makes certain both negative and positively charged impurities are effectively eliminated from the feed water.

Their effectivity rate is quite high but it is often supplemented by the deployment of a mixed-bed deionizer as a polishing phase. Underneath are the prominent impurities fervently eradicated by dual bed deionizers.

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➣What Is the Quality of Water Produced by Dual-Bed Deionizers?

Dual-bed deionizers typically produce deionized water, which is a form of purified water. When graded using the conventional water grading system, deionized water ranges from Type II to Type I purified water. The distinctiveness in the deionized water quality is accounted for by the difference in electrical conductivity and resistivity.

You can measure the quality of your deionized water by assessing its electrical resistivity or conductivity. Ordinarily, the deionized water harvested from dual-bed deionizers has a characteristic electrical conductivity of < 1 uS/cm.

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➣What Types of Resins Are Used in Dual-Bed Deionizers?

Essentially, there are two principle ion exchange resins used in dual-bed deionizers. However, these two exchange resins (cation and anion exchange resins) can further be broken down into four categories. Underneath is a brief illustration of the four chief ion exchange resins used in dual-bed deionizers.

Strong acid cation resins.

These are exchange resins chiefly deployed in water softening. They consist of anionic functional groups like sulphonate (SO₃^–). They are mainly regenerated using sodium (Na²⁺).

Weak acid cation resins.

The primary application of weak acid cation resins (WAC) is dealkalization and demineralization. They achieve this owing to their distinct functional groups made of carboxylic acid. They generally replace cationic impurities with hydrogen and are often regenerated using hydrochloric or sulphuric acid.

Strong base anion resins.

They are typically made of acrylic, type I, type II, or macro-porous resins. They can perform a range of functions including TOC eradication and demineralization.

Weak base anion resins.

They characteristically lack exchangeable ions and are chiefly exploited for partial demineralization. Their regeneration is mainly done using sodium hydroxide or sodium carbonate or ammonia.

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➣What is Dual-Bed Deionizers Made Of?

NEWater manufactures dual-bed deionizers using first-rate materials to guarantee longevity and optimal performance. Although our dual-bed deionizer systems are often preassembled units delivered as turnkey solutions, you must understand their primary components. Beneath are the chief components that make up dual-bed deionizers.

• Exchanger vessels can be made from FRP, stainless steel, or non-metallic material.
• Valves, which are essentially used to regulate the flow.
• Internal distribution system.
• The cation exchange resin.
• The anion exchange resin.

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➣What are the Benefits of Using Dual-Bed Deionizers?

Dual-bed deionizers provide users with a cost-efficient and immaculately effective water purification alternative. They technically offer a reliable source of high-grade deionized water at production costs significantly less than those incurred when a mixed-bed deionizer is deployed. Their operation module is quite unsophisticated owing to its preassembled nature and simple designs. Additional benefits include:

• Sufficient flow rates of up to 135GPM.
• High exchange capacities of up to 800K Grains.
• Varied designs including skid-mounts.

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➣What is the Service Flow Rate of Dual-Bed Deionizers?

The service flow rate is a measure of the quantity of feed water your dual-bed deionizer can process in a minute. Ordinarily, it is measured in gallons per minute (GPM). NEWater equips dual-bed deionizers with varying service flow rates reflective of the customers’ dissimilar demands.

For instance, we manufacture standard dual-bed deionizer systems with service flow rates ranging from 2GPM to 135GPM. Greater service flow rates are incorporated into customized deionizer machines.

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➣Do You Manufacture Electrodeionization Water Systems?

NEWater’s enterprising nature has seen spearhead the development of contemporary water treatment systems such as electrodeionization water systems. We manufacture electrically oriented water deionization systems capable of generating deionized water with an electrical resistivity of 18.2MW/cm.

Our electrodeionization water systems are excellently designed and offer energy efficiency, impeccable deionization rates, and versatility. They can be deployed in seawater desalination, wastewater treatment, and other water purification applications.  Revolutionize your water purification project by calling NEWater today to order your electrodeionization water system.

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➣How is Dual-Bed Deionizers Different from Mixed-Bed Deionizers?

Both dual-bed deionizers and mixed-bed deionizers are massively popular water treatment systems primarily utilized to produce deionized water. However, their configurations, working principles, and quality of the end product are slightly different. For starters, dual-bed deionizers comprise two exchange vessels while mixed-bed deionizers consist of a singular exchange vessel.

Mixed-bed deionizers are characteristically more effective owing to the intimate blend of the cationic and anionic exchange resins. Whereas the deionization process in mixed-bed deionizers occurs in a single vessel, in dual-bed deionizers, the process occurs separately in two distinct vessels.

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➣Which Pretreatment Systems Are Used in Dual-Bed Deionization?

For the attainment of optimal results, preconditioning of the feed water is paramount. Typically, pretreatment is a precautionary process deployed to mitigate the premature damaging of the primary water treatment equipment.

There are a plethora of pretreatment technologies to choose from but the ideal process is often determined by the quality of the feed water. The following list highlights the primary pretreatment systems that can be utilized to supplement dual-bed deionizers.

• Reverse osmosis systems.
• Multimedia filters.
• Activated carbon filters.
• Ultrafiltration systems.

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➣Can Dual-Bed Deionizer Treat Hard Water?

The removal of hardness-causing minerals (Mg2+ and Ca2+) is immaculately achieved using strong acid cation resins. Essentially, the strong acid cation resin is made up of sodium ions, which are used to replace the calcium and magnesium minerals. Virtually all water softener systems consist of a strong acid cation resin. Dual-bed deionizers, when exploited to soften hard water guarantee deionized water with a hardness score of 60 mg/L or lower.

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➣Which Post-Treatment Systems Are Used in Dual-Bed Deionization?

The range of pollutants eliminated by dual-bed deionizers is chiefly limited to charged constituents only. Therein, you might need to incorporate a post-treatment system to ensure the product water harvested meets your quality demands. Quite often, mixed-bed deionizers are deployed to polish the deionized water generated by dual-bed deionizers since they are more thorough.

Illness-causing microbes lack electrical charges meaning they cannot be eradicated using a dual-bed deionizer. To eliminate them, you need a fully functional UV water sterilizer. Additionally, the removal of chlorine and other organic chemicals might necessitate the use of activated carbon post-filters.

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➣How Do You Regenerate Dual-Bed Deionizers?

Resin regeneration is a process designed to reinstate the original ionic form of the exhausted ion exchange resin. The regeneration process for two-bed deionizers is often achieved in four steps. The first step involves backwashing, which is a cleansing process that involves pumping water in opposite direction to the typical service flow.

During backwashing, the water is injected at specified flow rates and typically the cation exchange resin is back-washed at roughly 6GPM while the anion exchange resin is back-washed at approximately 3GPM. Subsequently, the appropriate regenerant are introduced at specified concentrations. Anion resins are typically regenerated using caustic solutions while cation resins are regenerated using acids like HCL.

The slow rinse process is then initiated at a flow rate similar to the one applied in the dilute regenerant. Upon completion, the fast rinse is consequently commenced at a greater flow rate. The excessive regenerant are eliminated from the resin resulting in a perfectly conditioned resin.

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➣Can Dual-Bed Deionizers Generate Drinking Water?

Dual-bed deionizers as well as other water deionizer systems can produce drinking water but the essence of drinking deionized water has always been a highly contentious issue. Medical experts argue that drinking demineralized water hardly benefits the human body owing to its low mineral concentration.

Nonetheless, the consumption of deionized water has no instantaneous health effects. For the body to benefit from drinking water, the deionized water must be remineralized with calcium and magnesium minerals (at 30 mg/L and 10 mg/L respectively).

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➣When is Regeneration Necessitated in Dual-Bed Deionizers?

Several indications will let you know when your dual-bed deionizer needs regeneration. You can approach resin regeneration proactively by practicing periodic regeneration or reactively regenerating your dual-bed deionizer.

A drop in the service flow rate and a dip in quality of the demineralized water harvested are the two primary indications that your system necessitates regeneration. Practicing the proactive approach averts the negative implications of watered-down product water hence it is the recommended approach.

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➣Do You Manufacture Portable Dual-Bed Deionizers?

By intelligently designing our dual-bed deionizers, we manage to deliver highly portable systems for industries, households, and commercial entities. NEWater’s mobile dual-bed deionizers are customarily preassembled on metal frames or skid mounts.

The simplicity of these designs makes them easy to transport, install and operate. Our portable dual-bed deionizers are characteristically lightweight and occupy relatively smaller footprints. In addition, they support varying flow rates and can suit any application field owing to their diverse exchange capacities.

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➣Can Dual-Bed Deionizers Be Used In Industrial Water Treatment?

Numerous industrial processes depend on deionized water hence the tremendous demand for industrial deionizer systems. Applications such as cooling towers, boiler feed water, and pharmaceutical manufacturing necessitate high-purity water and dual-bed deionizers are guaranteed to provide high purity water.

NEWater provides standard and customized industrial dual-bed deionizers with extremely high exchange capacities and unmatched effectiveness. We also provide a myriad of other industrial water treatment systems at discounted price points.

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➣Which Types of Feed Water Can Be Treated Using Dual-Bed Deionizers?

The versatility of dual-bed deionizers means they can be deployed to treat virtually all forms of feed water. They are however more suited to treating feed water with characteristically high concentrations of charged inorganics.

The feasibility of dual-bed deionizers in water treatment is augmented by the fact that the majority of water contaminants are electrically charged inorganics. Moreover, supplemental systems can be incorporated to elevate the efficiency of the deionizer machines. Underneath is a list of feed water sources treatable using dual-bed deionizers.

●Wastewater.
●Groundwater.
●Seawater.
●Brackish water and tap water.

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➣Do You Provide Custom-Built Dual-Bed Deionizers?

NEWater’s policy dictates that we develop customized solutions that warrant optimal feasibility and performance. Our manufacturing process entails highly innovative processes such as 3D modeling for greater precision and accuracy.

We customize primary features such as the design and material of the exchange vessels, the system’s flow rate, and its exchange capacity. Placing custom orders is a stress-free exercise that only needs you to reach out to our engineers.

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➣How Long Do Dual-Bed Resins Last?

Owing to the quality of material used to manufacture NEWater’s dual-bed deionizers, users are assured of extended lifespans and sustained high productivity. A typical exchange resin should serve you optimally for 10-15 years.

However, the attainment of such lifespans is chiefly dependent on the quality of care you accord the dual-bed deionizer. For instance, timely regeneration is essential in averting the untimely collapse of your exchange resin.

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➣What Post-Sale Services do You Offer Dual-Bed Deionizer Buyers?

In addition to having the industry’s leading dual-bed deionizers, NEWater also offers a myriad of customer-oriented post-sale services. We take pride in our dedication to customer satisfaction hence we have constituted a series of exclusive services meant to elevate your shopping and user experiences. Underneath are NEWater’s exemplary after-sale services redeemable once you purchase your dual-bed deionizer from NEWater.

• Door-to-door delivery.
• One-year warranty.
• Free technical consultations.
• Round-the-clock customer support.
• On-site installation.

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➣Do You Provide Delivery Services for Dual-Bed Deionizers?

To amply gratify the multinational demand for our dual-bed deionizers, we have devised global shipment measures and partnered with renowned courier service firms. At the moment, NEWater’s delivery routes transcend over 200 countries and we average one of the industry’s best turnaround times.

Under normal circumstances, we deliver small-sized dual-bed deionizers in 3-7 days while we deliver conventionally huge plants in 2-3 months. Order your dual-bed deionizer from NEWater and rest assured it will be delivered to your preferred site safely and promptly.

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➣Where Should I Purchase Dual-Bed Deionizers and Their Related Components?

With a reputation for first-rate products and excellent customer services, you have no reason to look beyond NEWater when it comes to purchasing dual-bed deionizers. The quality of our manufacturing processes, facilities, and water treatment systems is evidenced by the plethora of accreditations we hold including ISO 9001.

Additionally, we manufacture custom components internally and often reinforce our stock with components from reputable manufacturers. Our dual-bed deionizers are always competitively priced and we offer delivery services to your select destination. Shop from NEWater and get a taste of the best quality dual-bed deionizers.

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➣Can I Pay for The Dual-Bed Deionizer in Installments?

Yes. As a customer-driven manufacturer and supplier of dual-bed deionizers, we have adopted a flexible payment scheme. You have the liberty of making partial or full payments at NEWater. However, all payments for conventionally small dual-bed deionizers must be made in full prior to shipment. Installment payments categorically apply to enormous and specialized dual-bed deionizers and other large water treatment systems.

Our payment terms stipulate that partial payments should be made in three installments of 50%, 30%, and 20% respectively. The first installment should be made during order placement while the 30% should be after video inspection. Clearance of the final 20% is needed before the shipment of the dual-bed deionizer.

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➣What are the Limitations of Dual-Bed Deionizers?

When you weigh the pros and cons of dual-bed deionizers, the pros significantly outweigh the cons. Nonetheless, special attention needs to be paid to the cons if they are to be counteracted. The first major drawback of dual-bed deionizers is compounded by their inability to eradicate certain contaminants especially organics like pathogens and viruses. Additionally, the removal of all ionized constituents results in mineral-deficient drinking water.

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