Information about Sintered Activated Carbon Filters That All You Want to Know

In the water treatment industry, words like sintered activated carbon cartridge, compressed activated carbon filter, extruded activated carbon cartridge, CTO carbon cartridge and honeycomb carbon filter are often mentioned or used, but many people do not really understand them.HUATAN FILTERwill introduce you in detail about the difference between these products today.

NSF CTO Activated Carbon Block Carbon Charcoal Water Filter CTO Filter Cartridge
NSF CTO Activated Carbon Block Carbon Charcoal Water Filter CTO Filter Cartridge

Sintered activated carbon filter, compressed activated carbon filter, extruded activated carbon filter are named after their production process characteristics, and CTO carbon filter and net carbon filter are named after the appearance of their final shape. Although their appearance is the same, their internal quality and production technology are greatly different.

Sintered activated carbon block is made by mixing activated carbon powder material and polymer hot-melt pore material, and then pouring it into a special mold and sintering at a high temperature of 200-300 ° C. Because this polymer bonding material can form open micropores in the sintering process, it maintains the characteristics of large specific surface area of activated carbon powder, excellent pore formation, better filtering effect, and more fully with liquid contact after mixing with activated carbon;Due to its complex processing technology, the production capacity of sintered activated carbon filter is also limited.

Compressed activated carbon filter is made by mixing activated carbon powder material with inorganic liquid binder, filling it into a special mold, compressing and molding with a press at high pressure, and drying after exiting the mold;This process has high content of activated carbon and good filtering effect. However, because it is only adhered by using inorganic materials and then high-pressure molding without being sintered at high temperature during production.This makes it difficult to control the pore diameter of the compressed activated carbon filter and the filter cartridge pressure drop becomes large, which affects the performance of the filter cartridge.

Extruded activated carbon filter is produced by mixing activated carbon and common hot-melt resin and putting it into a screw extruder for heating and extrusion molding. In this production process, the appearance of the activated carbon is melted and wrapped by the hot-melt resin after high temperature. The hot-melt resin blocks the pores of the activated carbon, causing the entire filter cartridge to lose its adsorption effect. The production cost of extruded activated carbon block produced by this process is low, but its output is very high. This filter cartridge is just a decoration during use without any filtering or adsorption effect.

CTO carbon filter is the abbreviation of chloride, taste, and odor. Net carbon block filter extruded activated carbon filter , sintered activated carbon filter,and compressed activated carbon filter, in a broad sense, they are rod-shaped forms of activated carbon block, which can be collectively referred to as shaped activated carbon cartridge.

At present, the use of shapedactivated carbon filter cartridges in the water treatment industry is becoming more and more important.

The main reasons are: Firstly, the formed activated carbon filter integrates the functions of adsorption and interception. It not only has the adsorption of activated carbon, but also has dense voids, which can effectively intercept large particles of impurities and effectively reduce the physical pollution of water quality;

Secondly, the pore size of the shaped activated carbon filter cartridge can be adjusted arbitrarily, and the smallest pore size can reach 0.2 micrometers, which is better than the so-called large-flux hollow ultrafiltration membranes on the market.

Thirdly,The black water that flows out of the shaped activated carbon during water treatment is less than the granular activated carbon. After the black powder in the carbon block is washed out for the first time, the black water will not appear in the future, and it will not be caused by the flushing of the water like the granular activated carbon. It will not cause decontamination and secondary pollution when washed by water stream like granular activated carbon.

Finally, the activated carbon powder below 80 mesh has a large specific surface area after processing, so that the performance of activated carbon can be fully exerted.

The sintered activated carbon block is a shaped activated carbon with the above functions. Because many people confuse sintered activated carbon block with extruded activated carbon block, many active carbon block manufacturers have given their sintered activated carbon block products a unique name in order to avoid confusion. For example, HUATAN FILTER called sintered activated carbon as diamond carbon block. The 3M company called this activated carbon filter a black magic activated carbon filter.

Due to its special molding process, sintered activated carbon block technology can be developed into a compound filter cartridge with activated carbon as the main body mixed with a variety of ultra-fine filter powders.

Because the shape of the sintered activated carbon filter is very similar to the shape of the low-end extruded activated carbon filter, we share 2 main methods of identification for you.The first is the hydrophilicity test. The sintered activated carbon block has good hydrophilicity, so you can try to drop a drop of water on the filter cartridge, and the water droplets can immediately penetrate into the carbon filter.The second method is that the water flowing out of the sintered activated carbon filter cartridge when it is first passed is hot, and this phenomenon does not occur when the activated carbon water filter is squeezed.

Sintered activated carbon filter has a relatively low production capacity due to the special sintering process, and it requires a large investment in mold costs and high-quality materials. Its product cost is higher than ordinary carbon filter cartridges, but it has superior product performance. Experienced companies in the water treatment industry understand the benefits of this high-end product. With the constant standardization of the water treatment industry, the inferior carbon filter materials that have been in the market for price competition must be abandoned, and the sintered activated carbon filter cartridge will become an essential accessory for the water purification industry.

Why Should The Activated Carbon Cartridge in The Water Purifier Be Replaced Regularly?

We all know that the filter cartridge is the core component of all water filters, and the activated carbon filter cartridge is the most commonly used filter element in water purifiers.Because activated carbon can physically adsorb contaminants, it does not cause pollution, has no side effects, and is inexpensive. Therefore, activated carbon is a relatively common filter cartridge material in water purifiers. So can the activated carbon cartridge in the water purifier be used for a long time, and why should it be replaced regularly?

CHINA ACTIVATED CARBON BLOCK FILTER CARTRIDGE MANUFACTURER AND SUPPLIER-HUATAN FILTER

Because activated carbon is usually made of nut shells and trees. For example, activated carbon filter material of HUATAN FILTER is made of coconut shell certified by NSF.These materials are heated at high temperature under the condition of being isolated from the air, and continuously pass water vapor, and finally remove the wood gas and wood tar that are decomposed by heating due to heat. The remaining main component is activated carbon.

The activated carbon is covered with tiny pores inside and out, so its surface area is particularly large. After calculation, the surface area of 1 gram of activated carbon can reach 500-1000 square meters. This makes activated carbon have a strong adsorption ability, people can use it to adsorb harmful substances in water or air to purify water or air.

The activated carbon filter cartridge mainly plays a filtering and adsorption role in the water purifier, but after a certain period of time, the adsorption performance of the activated carbon filter cartridge will saturate and will lose its purification function.And with the increase of the use time, the adsorbed substance and the activated carbon filter itself will also retain some microorganisms and bacteria.

Therefore, the activated carbon filter cartridge placed in the water purifier or the filter tank cannot be used for many years. After a certain period of time, it is best to replace the activated carbon cartridge in the water purifier or the filter tank in time.According to the water pollution situation in different areas, it is best to replace the filter cartridge in 3 to 6 months in the heavily polluted area, and the filter cartridge needs to be replaced in the 6 to 9 months in the slightly polluted area, The longest life of the activated carbon filter cartridge generally does not exceed one year.

How Much You Know about Activated Carbon Cartridges in Water Filters

Today we want to share with you about the functions of several activated carbon cartridges in water filters. No matter what type of water purifier you are using, the activated carbon filter cartridge in it will have different performance effects depending on the their different type.

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1.Performance effect of PP fiber filter cartridge

The PP fiber filter cartridge can pre-treat the tap water entering the water purifier, and filter out the sediment, suspended solids, colloids, impurities, etc. in the water. It has the characteristics of large filtering area and large amount of dirt, good filtering effect and long service life .

2.Performance effect of granular activated carbon filter cartridge

The activated carbon filter cartridge made of high-quality coconut shell activated carbon can effectively absorb harmful substances such as pigments, odors, residual chlorine, halogenated hydrocarbons and organic substances in the water.

3.Performance effect of compressed activated carbon filter cartridge

The compressed activated carbon filter cartridge can also deeply absorb harmful substances such as pigments, odors, halogenated hydrocarbons and organic substances in the water, which can effectively improve the mouthfeel of water. The long-lived compressed activated carbon block and the mesh structure with high dirt holding capacity make the water filter cartridge have dual-function filtering performance.

Tips: Activated carbon filter plays a big role in water purifiers, we should not ignore it! So please remember to choose a reliable filter brand when you buy or replace water filters or activated carbon cartridges. Here,HUATAN FILTER would be One of your best choices.

The Role of Activated Carbon Block Cartridge in The Water Filter

Activated carbon is a black powder or block, granular, honeycomb amorphous carbon or a well-arranged crystalline carbon.

Activated carbon blcok is a very good adsorbent material which uses charcoal, bamboo charcoal, various shells and high-quality coal as raw materials,and is processed by a series of  by physical and chemical methods such as crushing, sieving, catalyst activation, rinsing, drying and screening.It has the dual characteristics of physical adsorption and chemical adsorption, and can selectively adsorb harmful substances in tap water to achieve decolorization, odor removal and filtration of chemical pollution and volatile organic substances.

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What is the role of activated carbon block in the field of water filtration?

Activated carbon block is widely used in industrial production and family life especially in the field of water purification due to its strong adsorption performance.In the case of drinking water applications, once the drinking water is contaminated, it is easy to produce odor.First of all, it will make people feel very uncomfortable in the senses, and secondly it may also cause harm to human health.One of the important performance of activated carbon block is that it can adsorb and filter the pigments and odors in the water, such as the rust smell produced by rust in the water, the yellow rust water color, the odor generated by the sulfide water, the earthy smell produced by the muddy water, and the mold and smashing smell produced by the animal and plant corpses.

Activated carbon cartridge has a well-developed pore structure and a large specific surface area. It has good adsorption capacity for inorganic or organic substances and colloidal particles in gases and solutions. The working principle of the activated carbon filter is to use the porous solid surface to adsorb and remove organic or toxic substances in the water to achieve the effect of purifying water.

The adsorption of organic matter by activated carbon cartridge is affected by its pore size distribution and organic matter characteristics, which is mainly affected by the polarity and molecular size of organic matter. For organic matter of the same size, the greater the solubility and the stronger the hydrophilicity, the worse the adsorption of activated carbon on it. Conversely, it has strong adsorption capacity for organic substances such as benzene compounds with low solubility, poor hydrophilicity and weak polarity.

What are the classifications of activated carbon filter cartridges for water purifiers?

UDF granular activated carbon filter: It can effectively remove odor in water, such as chlorine (bleaching powder), improve the taste of water, and effectively avoid the production of carcinogens such as chlorine and chloroform.

CTO activated carbon filter: It can deeply absorb harmful substances such as color, odor and residual chlorine in water and use micropores of charcoal activated carbon to retain fine particles and colloidal suspension.

Post-activated activated carbon: It can effectively remove the odor of water, inhibit the growth of bacteria, improve the taste of pure water, and increase the energy of water.

In summary, the activated carbon filter has an excellent effect on water purification. It not only removes the odor and odor, but also improves the purity of the water, and has a high removal rate for various impurities in the water,such as chlorine, phenol, cyanide, pesticides and other harmful substances.Therefore, activated carbon blcoks can be widely used in various types of large, medium and small water purification equipment.

HUATAN FIlTER is a professional carbon block water filter manufacturer and supplier in China.If you have any enquiries or custom needs about carbon cartridge or water filter,please feel free to contact us via info@watfilter.com.

3 Activated Carbon Filter Cartridges in Different Manufacturing Processes

In the water treatment industry, these terms such as sintered activated carbon, compressed activated carbon, extruded activated carbon, CTO are often mentioned or used, but many people do not really understand the difference between them. Sintered activated carbon filter cartridges, compressed activated carbon filter cartridges, and extruded activated carbon filter cartridges are named after their production process characteristics. CTOs are words that are known for their final shape. Although they have the same shape, the internal quality and production process are very different.

China custom activated carbon block water purifier | filter cartridge company & factory-HUATAN

Sintered Activated Carbon Block Filter

The sintered activated carbon filter cartridge is made by mixing activated carbon powder material and polymer hot-melting pore-forming material, pouring into a special mold and sintering at a high temperature of 200-300 ° C; since the bonding material itself has pore-forming property, after being mixed with activated carbon, It maintains the characteristics of large specific surface area of activated carbon powder, and has excellent pore-forming properties and better filtration effect, which can more fully contact with liquid; however, the production capacity of sintered activated carbon filter is limited due to its complicated processing technology.

Compressed Activated Carbon Block Filter

The compressed activated carbon filter cartridge is mixed with activated carbon powder material and inorganic liquid binder, poured into a special mold, and is compressed by high pressure compression molding, and dried after being discharged from the mold; the activated carbon filter  produced by this method  has a relatively high carbon content and very good filtering effect. Since the pore size of the filter cartridge is mainly controlled by the particle size of the activated carbon, and the binder material of the compressed activated carbon filter cannot be pore-forming during the manufacturing process, the property of the filter cartridge is inferior to that of the sintered activated carbon.

 Extruded Activated Carbon Block Filter 

 The extruded activated carbon filter cartridge is mixed with activated carbon and ordinary hot melt resin, and then placed in a screw extruder for heating and extrusion molding. In this production process, the surface of the activated carbon is melted by the hot melt resin at a high temperature, which causes the plugging of some activated carbon micropores and affects its adsorption performance.However, extruded carbon filter cartridges have low production costs and can achieve high yields. The performance of the extruded activated carbon filter in use is relatively much worse than the previous two carbon block filters.

HUATAN is a Chinese company specializing in the production of high performance sintered activated carbon filter and compressed activated carbon filter. We can provide one-stop carbon block and water purifier customization services and OEM services according to customers’ needs. If you have any questions about carbon filters, please feel free to contact us via info@watfilter.com.