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Welcome to our webpage dedicated to Felite™ Ready-to-use Mixed bed (DI) Resin, a high-quality product that we manufacture to meet the needs of the water purification industry.
If you’re in need of high-quality demineralized water, Felite™ Ready-to-use Mixed bed (DI) Resin is the ideal solution for you. Our mixed bed resin is specially designed to polish process water to achieve demineralized water quality, typically after passing through a reverse osmosis system. By passing water through our resin at the recommended flow rates, you can achieve almost complete reduction of total dissolved solids.
Our mixed bed resin is specially formulated with a mixture of strong acid cation resin in H+ form and strong base anion resin in OH- form to provide effective and efficient demineralization of water. This allows for the production of high-quality demineralized water with exceptional resistivity. We offer options for resistivity levels of up to 10MΩ, 15MΩ, or 18MΩ, making it an excellent choice for a wide range of applications that require high-quality demineralized water, such as the pharmaceutical, electronics, and power industries.
You can trust Felite™ Ready-to-use Mixed bed (DI) Resin to meet your demineralized water needs with the highest level of quality and reliability.
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Felite™ Resin Technology supplies separate SAC resin and SBA resin as well.
Contact the Felite™ team to get a sample or an instant quote.
We use only top-quality materials and state-of-the-art facilities to ensure consistent performance and quality in our mixed bed resins.
Mixed bed resin is a type of ion exchange resin used in the demineralization process to produce high-quality, demineralized water. It is unique as it contains both strong acid cation resin in H+ form and strong base anion resin in OH- form within a single unit, enabling the removal of both positively and negatively charged ions from water.
Mixed bed resin comes in two types: gel/gel and gel/macroporous. Gel/gel is the most commonly used type and finds its application in industries requiring deionized water, such as electronics, pharmaceuticals, and aquariums. It is composed of small beads with a consistent gel structure, efficiently removing total dissolved particles from water.
Gel/macroporous type is less commonly used and utilizes macroporous type strong base anion (SBA) resin instead of gel type. It has a high capacity for total dissolved solids removal and is used in the demineralization and decontamination of radioactive effluents.
Mixed bed resin is frequently used in conjunction with other demineralization techniques like reverse osmosis to achieve the highest level of water purity. The positively charged ions are converted to hydrogen ions and negatively charged ions to hydroxide ions as water passes through mixed bed resin, producing high-quality, demineralized water devoid of other contaminants and total dissolved solids and result in pure water with a resistivity level of up to 10MΩ, 15MΩ, or 18MΩ to suit for use in different industries, such as laboratory, power generation, spotless rinsing, aquarium, and electronics manufacturing, etc. Its high capacity to remove TDS(total dissolved solids) makes it a cost-effective and efficient method for producing high-quality, deionized water.
When selecting a mixed bed resin for your application, several factors must be considered to ensure that you choose the right product.
The quality of water required for your application is the first factor to consider. Different applications may have varying water purity requirements, and mixed bed resin can produce water with customized resistivity levels to meet specific needs. Knowing your application’s water quality requirements is crucial before selecting a mixed bed resin.
The type of application is another critical factor. Different industries and applications may require different types of mixed bed resin to achieve optimal performance. For instance, producing ultrapure water for a laboratory application may require a different type of mixed bed resin than producing demineralized water for an aquarium.
The operating conditions of your application also matter when selecting mixed bed resin. For instance, if you operate in a high-temperature environment, a macroporous mixed bed resin that can withstand those conditions may be necessary. Macroporous mixed bed resins have a larger pore size than standard gel structure mixed bed resins, making them more resistant to fouling and better able to withstand high-temperature environments.
Another important factor to consider is whether the mixed bed resin requires regeneration. Mixed bed resin is used as a disposable product in some applications, while in others, it needs to be regenerated. Felite Resin Technology uses black-colored cation component mixed with the standard anion component. This resin type allows for the clear separation of cation and anion resin layers during regeneration. On the other hand, indicator resins use a color change to indicate when the resin needs to be regenerated, providing a more visible indication.
Selecting the right mixed bed resin is crucial for achieving optimal water purity in various applications. If you have any questions or concerns about selecting the right mixed bed resin for your application, don’t hesitate to contact us for expert guidance and support.
We’d love to answer any of your technical questions !
In applications where mixed bed resin requires regeneration, it’s important to follow the manufacturer’s guidelines carefully to ensure effective regeneration, which is a crucial process to maintain the quality and effectiveness of the resin bed. The frequency of regeneration depends on the quality of the water being treated and the specific characteristics of the mixed bed resin being used. In general, mixed bed resin should be regenerated once it has reached its exhaustion point, which is determined by monitoring the quality of the water being produced.
The specific regeneration procedures for mixed bed resin can vary depending on the resin type. In general, the process involves:-
Backwash → flushing the resin bed with a regenerating agent → Mixing → Final Rinse → Disinfection
To get a more detailed explanation of the regeneration steps, please read our blog post《Mixed Bed (DI) Resin Regeneration Process》
Once the mixed bed resin has been regenerated, it should be rinsed and stored properly until it is ready to be used again. Store regenerated resin in a clean, dry container, and ensure that it is properly labeled to avoid any confusion with new resin.
By the best practices for the regeneration of mixed bed resin above, you can ensure that it continues to provide high-quality, demineralized water for your application. If you have any questions or concerns about the regeneration process, don’t hesitate to contact us for expert guidance and support.
We’d love to answer any of your technical questions !
In applications where mixed bed resin requires regeneration, it’s important to follow the manufacturer’s guidelines carefully to ensure effective regeneration, which is a crucial process to maintain the quality and effectiveness of the resin bed. The frequency of regeneration depends on the quality of the water being treated and the specific characteristics of the mixed bed resin being used. In general, mixed bed resin should be regenerated once it has reached its exhaustion point, which is determined by monitoring the quality of the water being produced.
The specific regeneration procedures for mixed bed resin can vary depending on the resin type. In general, the process involves:-
Backwash → flushing the resin bed with a regenerating agent → Mixing → Final Rinse → Disinfection
To get a more detailed explanation of the regeneration steps, please read our blog post《Mixed Bed (DI) Resin Regeneration Process》
Once the mixed bed resin has been regenerated, it should be rinsed and stored properly until it is ready to be used again. Store regenerated resin in a clean, dry container, and ensure that it is properly labeled to avoid any confusion with new resin.
By the best practices for the regeneration of mixed bed resin above, you can ensure that it continues to provide high-quality, demineralized water for your application. If you have any questions or concerns about the regeneration process, don’t hesitate to contact us for expert guidance and support.
Mixed bed resin is a type of ion exchange resin used in the demineralization process to produce high-quality, demineralized water. It is unique as it contains both strong acid cation resin in H+ form and strong base anion resin in OH- form within a single unit, enabling the removal of both positively and negatively charged ions from water.
Mixed bed resin comes in two types: gel/gel and gel/macroporous. Gel/gel is the most commonly used type and finds its application in industries requiring deionized water, such as electronics, pharmaceuticals, and aquariums. It is composed of small beads with a consistent gel structure, efficiently removing total dissolved particles from water.
Gel/macroporous type is less commonly used and utilizes macroporous type strong base anion (SBA) resin instead of gel type. It has a high capacity for total dissolved solids removal and is used in the demineralization and decontamination of radioactive effluents.
Mixed bed resin is frequently used in conjunction with other demineralization techniques like reverse osmosis to achieve the highest level of water purity. The positively charged ions are converted to hydrogen ions and negatively charged ions to hydroxide ions as water passes through mixed bed resin, producing high-quality, demineralized water devoid of other contaminants and total dissolved solids and result in pure water with a resistivity level of up to 10MΩ, 15MΩ, or 18MΩ to suit for use in different industries, such as laboratory, power generation, spotless rinsing, aquarium, and electronics manufacturing, etc. Its high capacity to remove TDS(total dissolved solids) makes it a cost-effective and efficient method for producing high-quality, deionized water.
When selecting a mixed bed resin for your application, several factors must be considered to ensure that you choose the right product.
The quality of water required for your application is the first factor to consider. Different applications may have varying water purity requirements, and mixed bed resin can produce water with customized resistivity levels to meet specific needs. Knowing your application’s water quality requirements is crucial before selecting a mixed bed resin.
The type of application is another critical factor. Different industries and applications may require different types of mixed bed resin to achieve optimal performance. For instance, producing ultrapure water for a laboratory application may require a different type of mixed bed resin than producing demineralized water for an aquarium.
The operating conditions of your application also matter when selecting mixed bed resin. For instance, if you operate in a high-temperature environment, a macroporous mixed bed resin that can withstand those conditions may be necessary. Macroporous mixed bed resins have a larger pore size than standard gel structure mixed bed resins, making them more resistant to fouling and better able to withstand high-temperature environments.
Another important factor to consider is whether the mixed bed resin requires regeneration. Mixed bed resin is used as a disposable product in some applications, while in others, it needs to be regenerated. Felite Resin Technology uses black-colored cation component mixed with the standard anion component. This resin type allows for the clear separation of cation and anion resin layers during regeneration. On the other hand, indicator resins use a color change to indicate when the resin needs to be regenerated, providing a more visible indication.
Selecting the right mixed bed resin is crucial for achieving optimal water purity in various applications. If you have any questions or concerns about selecting the right mixed bed resin for your application, don’t hesitate to contact us for expert guidance and support.
In applications where mixed bed resin requires regeneration, it’s important to follow the manufacturer’s guidelines carefully to ensure effective regeneration, which is a crucial process to maintain the quality and effectiveness of the resin bed. The frequency of regeneration depends on the quality of the water being treated and the specific characteristics of the mixed bed resin being used. In general, mixed bed resin should be regenerated once it has reached its exhaustion point, which is determined by monitoring the quality of the water being produced.
A. Regeneration Procedures
The specific regeneration procedures for mixed bed resin can vary depending on the resin type. In general, the process involves:-
Backwash → flushing the resin bed with a regenerating agent → Final Rinse → Disinfection
To get a more detailed explanation of the regeneration steps, please read our blog post.《Mixed Bed (DI) Resin Regeneration Process》
B. Storage of Regenerated Resin
Once the mixed bed resin has been regenerated, it should be rinsed and stored properly until it is ready to be used again. Store regenerated resin in a clean, dry container, and ensure that it is properly labeled to avoid any confusion with new resin.
By the best practices for the regeneration of mixed bed resin above, you can ensure that it continues to provide high-quality, demineralized water for your application. If you have any questions or concerns about the regeneration process, don’t hesitate to contact us for expert guidance and support.
We’d love to answer any of your technical questions !
The process flow diagram shows the main summary of the split stream dealkalization process. Two strong acid resin beds are operated in two different forms in parallel; one column has SAC resins in Na+ form. The other vessel has SAC resins in H+ form. The resin bed in the sodium form act as a softener unit. The additional resin bed in hydrogen form operates as a demineralizing unit.
The influent feed water is split into two streams. One stream enters the cation resin in the sodium form column (A column), and the remainder enters the resin in the hydrogen form column (B column). The outlet water from column “A” contains 100% of influent alkalinity, and water from column “B” contains zero alkalinity and free mineral acidity (FMA). In the next step, these two streams blend. FMA in the hydrogen cation resin effluent converts sodium carbonate and bicarbonate alkalinity in the sodium cation resins effluent to carbonic acid. Refer to the following reactions for further understanding.
Carbonic acid (H2CO3) dissociation in water produces predominant species as follows.
H2CO3 ←→ H2O + CO2
Therefore, engineers set up the blended water to enter the degassifier. The countercurrent air stream will strip out carbon dioxide gas from the combined water. The final water alkalinity can be controlled by managing the percentages of each mixed water flow. The main advantage of the split stream dealkalization method is maintaining the desired alkalinity level of the final effluent water.
Strong acid cation resins have a higher operating capacity, reducing the required resin volume. FeliteTM introduces strong acid cation resins, a macro-porous type for effective treatment in dealkalizers. Using sulfuric acid as the regenerant of SAC resins is hazardous. You might be able to allocate extra capital costs and operational costs for the degassifier.
In summary, there are positive points in the split stream method, and they are;
Also, there are some downsides to this method;
We’d love to answer any of your technical questions !
The chloride anion dealkalization process is the most prevalent in lite industrial applications commonly used for low-pressure boiler operations. A softener unit is activated before an anion unit consisting of the strong base anion (SBA), type-II resins. These resins are present in chloride form.
The following reactions occur at the softener unit to remove hardness and reduce the fouling of SBA resins. Ca2+ and Mg2+ ions are replaced by the monovalent sodium ions attached to the SAC resins in the softener unit. Then sodium ions are released into the water.
Softened water enters the chloride anion dealkalizers with type-II SBA resins to reduce the alkalinity and the sulfates. Follow the ion exchange reactions shown below.
The chloride ions coming through the softener unit do not change. The salt splitting de-alkalization process has 90% efficiency in reducing the alkalinity in water without lowering the total solids. Type II SBA resins have a higher affinity to sulfate ions than alkaline ions, minimizing the resin efficiency and affecting the alkalinity leakages. The low ratio of sulfate ions to the total anions or high ratio of alkalinity to the total anions may increase the resin efficiency and decrease the alkalinity leakages.
The rapid increase of treated water’s alkalinity indicates the resin’s exhaustion and shows the regeneration requirement. Softener resins and the strong base anion type-II resin can use the brine solution to regenerate the resins as per the same procedure of softener resin regeneration. Using brine as the regenerant is safer here than in the process of the split stream.
Another point in regeneration, if caustic is used as a brine regenerant in the dealkalizing column, free CO2 in water is converted into bicarbonates or carbonates by exchanging with chloride ions. Reducing alkalinity decreases the carbon dioxide (CO2) in boiler condensate resulting in a low concentration of amine. Due to the stable TDS amount in alkaline water, there is no increase in the boiler’s concentration cycles. There can be slight increases in conductivity in boiler feed water.
Great attention is required for magnesium leakages from the softener. If magnesium hardness is higher than 1ppm, there is a chance to produce HCl after anion resin column in the condition of zero alkalinity.
MgCl2 + H2O → Mg(OH)2 + HCl
Excess softener capacity can be converted to a delikalizer, which will be a good advantage of this process. There is no initial capital cost for installing the degassifier and no operational cost.
Salt splitting de-alkalizer performs few disadvantages.
We’d love to answer any of your technical questions !
Weak acid cation dealkalization treats raw water with both hardness and alkalinity. The influent water, either with a similar hardness level to the alkalinity level or a lesser hardness level to the alkalinity level, is the best feeding water to the WAC dealkalizers. It is a cost-effective and highly efficient system for the above condition. In the case of higher hardness than the alkalinity level, dealkalized water remains some hardness. Therefore, a softener unit must follow the WAC dealkalizers to remove the remaining hardness.
The weak acid cations are in the form of H+. WAC resins act similar to SAC resins but exchange only the cations associated with the alkalinity. The effluent water from the WAC dealkalizers enters the degassifier due to the formation of carbon dioxide by dissociation of carbonic acid. The following equation is similar to the Mg2+ and Na+ cations too.
Ca(HCO3)2 +2R-H → 2R-Ca + 2H2CO3 (R – represents the resin)
The generated carbonic acid dissociates into water and carbon dioxide. Carbon dioxide will be stripped through a countercurrent air stream within the decarbonator. Also, it removes the TDS. The softener unit will remove the remaining permanent hardness during the effluent process through the degassifier or decarbonator. Adding a small amount of caustic to maintain the desired pH level in final effluent water is better.
When the resins near exhaustion, the effluent alkalinity level is higher than influent alkalinity. At that time, the regeneration process needs to proceed. WAC resins can regenerate with sulfuric acid and the softener resins with the brine solution.
WAC dealkalizers have high operating capacities. WAC resins are capable of removing bulk hardness during dealkalization. Therefore softener has minimized its capacity. The high operating efficiency of WAC resins reduces the amount of acidic regenerant waste.
We’d love to answer any of your technical questions !
Continuous operation of IX resin exhausts with exchange ions gradually decreases the resin efficiency. The regeneration procedure is similar to the IX resin procedures of each resin type.
In the chloride anion dealkalization, anion resin can regenerate with brine solution. It can return the anion resin to its pre-form of chloride. Adding a small amount of caustic soda to the regenerant will increase the alkalinity removal ability.
When we consider the weak acid cation dealkalization, the resin layers can regenerate with an adequately prepared sulfuric acid solution, then with a brine solution. Here, the sodium chloride brine supports the conversion resin to its initial form of Sodium ions. Using sulfuric acid as the regenerant can help the precipitation of calcium sulfate; therefore, maintaining the required acid concentration is a must. HCl acid (with common concentration 5% w/v) also can use for regeneration.
With five decades of experience, Felite Resin Technology is well versed in this field. In other hand, you are dealing with the master. You can trust us with your needs and expectations.
In the past five decades, we’ve developed several ion exchange resin models as per different customers and applications required, from standard mesh to fine mesh; from industrial grade to potable water grade.
Want to know how we make doing business easier? Let’s talk.
Pablo Hensley - Supply Chain Coordinator
Alex Allman - Purchasing Manager
Send us a message if you have any questions or request a quote. One of our experts will reply to you within 24 hours and help to select the suitable resin you want.
Founded in 1972, Felite™ Resin Technology specializes in the manufacture and service of ion exchange resins for the global marketplace.
