Is pre activated carbon the same as post activated charcoal?

It's not the same. 1. The role is different.

The water purifier is pre-activated carbon.

The filter cartridge is on odor, residual chlorine.

and so on. After-mounted activated carbon filters are designed to improve taste or sometimes remove odors from traditional storage barrels.

Every part placed in the water purifier has its own very special purpose, such as PP cotton.

It is used to filter large particles of impurities, ultrafiltration membrane.

The RO membrane can remove bacteria, viruses, heavy metal ions, etc., which are invisible to the naked eye, and activated carbon generally plays a role mainly through adsorption.

In actual use, due to the high precision of the RO membrane, the great filtration resistance, and the slow water production speed, the slowly purified water can only be stored in a pressure water storage tank. A rubber airbag is placed inside the pressure tank to press the water out through the pressure between the water storage airbag and the tank.

In this case, the purified water will have a little rubbery smell after being in contact with the rubber for a long time, which will have a certain impact on the taste. Therefore, post-activated carbon or other technologies are needed to improve the taste.

2. The raw materials of activated carbon are different.

The pre-activated carbon is mainly used to adsorb different color, odor, residual chlorine, etc., and the coal-based granular activated carbon is mostly used as the pre-filter element of the household machine, due to the surface functional group of the carbon structure.

It has more advantages than coconut shell activated carbon with relatively stable structure in terms of chemical adsorption.

The post-activated carbon is mainly used to improve the taste and inhibit the growth of bacteria. The activated carbon itself must be of high purity, and the first choice should be coconut shell pickling charcoal, and some consider the antibacterial and sterilization to choose silver-loaded coconut shell charcoal.

3. The location is different.

The pre-activated carbon is generally located in the second-stage filtration position, and the raw water is first coarsely filtered through PP cotton to intercept large particles of impurities, and then through the pre-activated carbon to adsorb different colors and odors, etc., and then flows through other filter elements for deep filtration.

Post-activated carbon is generally located behind the main engine filter element, so it is called post-activated carbon filter. The raw water passes through the filter element assembly of the main machine and reaches the water storage tank, and the water from the storage tank comes out and reaches the faucet through the rear activated carbon filter element.

4. The replacement cycle is different.

The replacement cycle of the pre-filter element is generally about 6-12 months, because it needs to filter the impurities in the water, so the replacement cycle should not be too long. The post-activated carbon has much less pollutants to intercept than the previous one, so the replacement cycle is longer than that of the pre-activated carbon. It is recommended that the replacement cycle of post-activated carbon is about 24 months.

The function is different, such as the coarse activated carbon particles in front of the water dispenser, which are used to adsorb impurities, heavy metals and other harmful substances in the water.

The post-activated carbon particles are very delicate and are used to change the taste of the water quality, and the chemical structure of the two is the same.

Activated carbon is also known as activated carbon black. It is black powdery or lumpy, granular, honeycomb-shaped amorphous carbon, and there are also crystalline carbon with regular arrangement. In addition to carbon, activated carbon also contains two types of admixtures:

One is chemically bound elements, mainly oxygen and hydrogen, which remain in the carbon due to incomplete carbonization, or in the activation process, foreign non-carbon elements are chemically combined with the surface of activated carbon, such as when activated with water vapor, the surface of activated carbon is oxidized or oxidized by water vapor; Another type of admixture is ash, which is the inorganic part of activated carbon; Ash is easy to cause secondary pollution in activated carbon.

The one installed in front of the permeable membrane is called pre-activated carbon, and the one installed behind is called post-activated carbon

The chemical structure is the same, and the properties should not change.

Activated carbon before and after a month less than a month to replace, because it is more saturated, if the quality of the activated carbon bought is not very good, it may need to be replaced earlier, if you want the effect to last a little better, you can consider other products, I have used Ye Guangni before, because the effect of activated carbon is not very good, it is too easy to saturate, it is different from the material of activated carbon, it will not adsorb saturation, it does not need to be exposed to the sun, and it can decompose and adsorb odor formaldehyde for a long time.

The frequency of replacement of activated carbon depends on the specific use environment.

The concentration of polluting gases in the new house is large, and it can be replaced in 15 days to a month, and if the paint used is less polluting, it can be replaced once every 2-3 months.

Activated carbon is generally adsorbed for about a month must be taken out to expose to the sun, so as to effectively avoid adsorption saturation and secondary pollution, under normal circumstances, the effective period of activated carbon is 6-12 months, do not use it for too long, otherwise it may cause secondary pollution.

Usually, you can carefully observe the state of activated carbon, and the odor disappears very quickly when you use it in the early stage, and the longer you use it, you find that the odor does not weaken, and you should change the activated carbon in time.

Extended Information: Precautions for the use of activated charcoal:

1. Water immersion is strictly prohibited: activated carbon is a porous adsorption substance, so it must be absolutely prevented from water immersion during transportation, storage and use, because after water leaching, the water is filled with active pores, which reduces the direct contact between the activated carbon and the specific surface area of the gas. Seriously affect the effect of use.

2. Fire prevention: When storing or transporting activated carbon, direct contact with the fire source should be prevented to prevent fire. When activated carbon is regenerated, it avoids oxygen and regenerates thoroughly. Otherwise, the temperature is high and the activated carbon spontaneously combusts.

Generally, there is no specific value in the service life of activated carbon, mainly looking at the concentration of the treated substance, the concentration is high and the service cycle is short, it is recommended to replace it once every 4-6 months;

The concentration is low and the use cycle is long, it can be used for 6-8 months, and if you have the ability, take it out and dry it every few weeks, which can improve the use cycle and adsorption effect of activated carbon).

Harmless to humans. Activated carbon is a hydrophobic adsorbent prepared by carbon-containing substances as raw materials through high-temperature carbonization and activation. Activated carbon contains a large number of micropores, can adsorb organic filth spike filial piety and some inorganic substances, it mainly plays a role in filtration and adsorption in the water purification early mountain vessel, if used for a certain period of time, the pores of activated carbon will be in a saturated state, and the adsorption effect will be reduced to zero.

And with the growth of time, the adsorbed substances and the activated carbon in the land itself will retain some microorganisms and bacteria, so it is best to replace the activated carbon in the water purifier in time after a certain period of time.

The difference between sintered activated carbon and pre-activated carbon Activated carbon is a specially treated carbon that heats organic raw materials (husks, coal, wood, etc.) in isolation from air to reduce non-carbon components (this process is called carbonization), and then reacts with gases, and the surface is eroded, resulting in a microporous structure (this process is called activation). Because the activation process is a microscopic process, that is, the surface erosion of a large number of molecular carbides is punctate erosion, so the surface of Kaiyuan has countless fine pores. Sintered carbon is white coal or anthracite, which is the coal with the highest degree of coalification.

Low volatile matter, high specific gravity, high hardness, less smoke when burning, short flames, strong firepower. Therefore, the difference between activated carbon and sintered carbon: active is a specially treated carbon, which heats organic raw materials (husks, cocole coal, wood, etc.) in isolation from air to reduce non-carbon components (this process is called carbonization), and then reacts with gases, and the surface is eroded, resulting in a microporous structure (this process is called activation).

Sintered carbon is white coal or anthracite, which is the coal with the highest degree of coalification. Low volatile matter, large specific weight, high hardness, less smoke when burning, short flames, and strong firepower.

Installation steps of activated carbon after water purifier:

1. Before replacing, first close the electroplating ball valve, press the flush button and wait for about ten minutes to let the system automatically relieve the pressure.

2. Unscrew the nut joint on the right side of the membrane shell with your hand or tool and pull out the water pipe.

3. Close the ball valve of the pressure barrel, unscrew the nut joint above it by hand or tool, and lead the water pipe into an empty bucket or washing tank.

4. Hold the post-activated carbon tightly with your hands, and then clamp the old post-activated carbon with pliers (or special tools) and pull it out of the membrane shell. Open the envelope of the new post-activated carbon and remove it.

5. Place the newly opened post-activated carbon at the back until one end of the two small black "O" rings reaches the bottom end of the membrane shell; Tighten the membrane shell cover in the opposite direction of the membrane shell cover.

6. Plug into the water pipe and tighten the joint nut. But don't forget to put the plugs, except for the push-in fittings, of course.

7. Open the electroplating ball valve. After letting the machine run for more than two hours to make the system enter the normal water-making state, then connect the water pipe with the pressure bucket ball valve and open the pressure bucket ball valve.

8. After changing the water test, turn on the faucet, activate, and release the water for 10 minutes, and observe at the same time whether there is water seepage or leakage, if there is no water seepage and water leakage, it can be used after 10 minutes of water release.

The adsorption function of activated carbon is widely used in life. When removing formaldehyde, we usually choose activated carbon as the bottom prop of the formaldehyde pressing box. In addition to removing formaldehyde,The main function of activated carbon is to remove water quality, and the water purification principle adopted by most water purifiers is often focused on the adsorption of impurities by activated carbon.

In general water purifiers, activated carbon often has a difference between front and back. The key point of the difference between the two is mainly the difference in function. One thing we need to know is that the functionality of activated carbon often depends on the degree of development of activated carbon fibers.

In contrast, the function of pre-activated carbon is mainly to purify water quality, that is, to play the function of activated carbon itself.

However, post-activated carbon only plays a role in improving water quality in this process, more precisely, improving the taste of water, and of course, it will also have a certain role in purifying water quality. As for the root cause of the existence of post-activated carbon, it is still the setting of the water storage tank.

In the composition of some new water purifiers on the market, the use of transparent water buckets instead of traditional water storage buckets leads to the fact that the taste of the water does not change due to the water storage conditions after the pre-activated carbon purification. Therefore, at this time, the setting of post-activated carbon is insignificant.

On the other hand, water purifiers often only need one purification step to purify water, and the subsequent steps can play a negligible functionIt's just about optimizing the user's experience in other ways. However, water purifiers often cause certain inconveniences because the filter element is difficult to replace, so choosing a water purifier requires certain considerations.

emmm: Hmm. Pre-activated carbon adsorbs discoloration and odor. After-activated charcoal improves taste. Removal of secondary pollution. Use two together.

The activated carbon in the pre-filter can rely on the developed pores to adsorb away the organic matter, residual chlorine, heavy metals, pigments, etc. that PP cotton in the water cannot adsorb.

The post-filter is generally placed behind the biofilm, which can improve the taste of water and adsorb odors on the one hand, and on the other hand, it can also supplement the adsorption of activated carbon in the pre-filter.

Pre-activated carbon is the absorption of odors, residual chlorine, etc. Post-activated charcoal is used to improve taste, or sometimes to remove odors from traditional storage barrels.

The pre-activated carbon is to adsorb different colors and odors, residual chlorine, etc., and the post-activated carbon is to improve the taste, or sometimes to remove the odor generated by the traditional water storage tank. Now the better Prometheus water purifier on the market has replaced the water storage bucket with a transparent water storage bucket, which will not produce secondary pollution, and the post-activated carbon has been canceled, the replacement cost has been reduced, and the water output has also increased.

Pre-activated carbon and post-activated carbon need to be used together.

The two need to be used together so that the effect will be good

The functions of the pre-activated carbon filter element are:

The activated carbon filter element is made of high-quality fruit shell carbon and coal-based activated carbon as raw materials, supplemented by food-grade binders, using high-tech technology and processed by special technology. The activated carbon filter element integrates adsorption, filtration, interception, and catalysis, 2The activated carbon filter element is made of high-tech technology and high-quality fruit shell charcoal as raw materials; The carbon rod filter element is made with edible agent binder as auxiliary materials, and is manufactured by a special backlog molding process; It can adsorb impurities such as discoloration, odor, and organic chemicals in the water body.