Coarse filtration + activated carbon adsorption

Coarse filtration + KDF filtration + activated carbon adsorption

Coarse filtration + activated carbon adsorption + ultrafiltration membrane (UF)

Coarse filtration + activated carbon adsorption + nanofiltration membrane (NF)

Coarse filtration + activated carbon adsorption + reverse osmosis membrane (RO)

(There are also several other water purification processes, which have not become mainstream due to practical application and other reasons, such as: electric adsorption, ultraviolet sterilization, ozone sterilization, etc.)

From this simplified water purification process structure table, we can see some familiar figures, the gorgeous "whole house water purifier" and "central water purifier"-①, powerful "whole house water softener"-②, each A "straight drinking machine" with a health function——③④, *pure “pure water machine”——⑤. Most businesses and consumers are familiar with membrane technology and recognize it, and some even worship the phenomenon of “membrane” — -Buy as long as it is a membrane filter water purifier. *Does the filter really decide everything? If this is the case, why does the water purifier have a coarse filtration link and an activated carbon adsorption link? Many merchants and even the sales staff of manufacturers do not understand, ignore or even ignore activated carbon, which has caused many unnecessary contradictions and affected the company's image and performance. In view of this, this article mainly talks about activated carbon, how much do you know about activated carbon?

2. Analysis and application of activated carbon materials

Activated carbon is a general term, but it is actually a diverse material subject. There are several types of activated carbon currently in contact with water purifier distributors on the market: coconut shell activated carbon, nut shell activated carbon, and coal-based activated carbon. After this kind of activated carbon material is processed and shaped, it becomes a transition unit of the water purifier-activated carbon filter element. Its function is mainly to absorb the chemical pollution of chlorine, phenol, sulfur and other organic solvents such as oil, colloid and pesticide residues in the water. The filter material function of membrane is only to filter bacteria. From another perspective, activated carbon The filter element also plays a role in protecting it.

There is also a new product called activated carbon fiber (activated carbon fiber, hereinafter referred to as ACF), which is an organic fiber material, a new type of adsorption material made by carbonization and activation. ACF is a typical microporous carbon (MACF). The adsorption capacity far exceeds that of traditional activated carbon, and it has better application performance. According to research, the adsorption capacity of ACF is 5-10 times larger than that of traditional activated carbon, and it can effectively adsorb free chlorine, phenol, sulfur, oil, gum, pesticide residues, other organic pollution, organic solvents, etc. in water. It even plays an important role in purification, decolorization, refining, and purification in the pharmaceutical, petrochemical, sugar, beverage, and alcohol industries. It is particularly important that ACF maintains a high adsorption capacity for low-concentration adsorbates. ACF also has a high oxidation-reduction capacity for some precious metal ions, which can be enriched and recycled to realize resource utilization.

In addition, ACF has various characteristics of fiber, has certain strength and strong plasticity, such as columnar filter element, sheet filter element, micro non-standard filter element, etc.; to be processed into water purifier filter element, a series of special processing techniques are required for deep processing. And the filter elements with different performances are proportioned for different purposes, such as: the proportion of household water purifier filter elements; the proportion of industrial solvent recovery; the proportion of medical filter elements. Its high-quality characteristics determine the wide range of uses of ACF and great potential.

Third, the decisive victory of water purification lies in the activated carbon filter element

The adsorption effect of activated carbon on the chemical pollution and organic solvent pollution in the water is generally to reduce the chance of human body disease during the process of drinking and using water. The effect on the human body is that the taste of the water becomes better, and there is no bleaching powder. After the irritating smell, the skin feels more compatible with water. These intuitive feelings can make consumers generate memory points, form consumption habits, and build a good reputation.

If you don’t pay attention to quality improvement, and don’t seek the high-quality experience of the product itself, consumers will not be able to form consumption habits and continue to use it. Even the advanced RO membrane, ultrafiltration membrane, and advanced electronic control technology will not be able to retain it. Customers must be cruelly eliminated by the market.

It can be said that the water purifier can choose not to use membranes, but activated carbon is the only option. As the third generation of activated carbon after powdered and granular activated carbon-activated carbon fiber (ACF), it has been developed and produced in developed countries such as Europe, America and Japan for nearly 30 years. Over the years, although it is still a new type of material compared to the history of research and application of ordinary activated carbon, its role in environmental protection applications is becoming more and more important. It is foreseeable that the water purification industry that has just started in my country, to achieve high-quality industrial upgrading from a low threshold, the use of high-quality ACF filter elements must be a new life for water purification products.