Carbon block gravity water filters are a type of water filtration system that uses activated carbon blocks to remove impurities from drinking water. These filters work by using gravity to pull water through a carbon block filter cartridge, which traps contaminants such as sediment, chlorine, volatile organic compounds (VOCs), and some bacteria.

The activated carbon in the filter binds with the impurities and removes them from the water, resulting in clean and safe drinking water. These filters are typically easy to use and maintain, and they do not require electricity or any special installation. They are also relatively affordable compared to other types of water filtration systems.

Carbon block filters are made from compressed carbon particles, which create a densely packed matrix of microscopic pores. As water flows through the filter, impurities become trapped within these pores, resulting in clean, purified water. Carbon block filters are highly effective at removing contaminants, and are often used in conjunction with other filtration technologies such as reverse osmosis and UV sterilization.

Gravity-fed water filters are a popular choice for people who want to purify their drinking water without relying on electricity or complicated installation procedures. These filters are simple to set up and use, and are ideal for use in homes, offices, and outdoor settings such as camping trips or emergencies.

In latest years, customer demand has driven development of various point-of-use/point-of-entry (POU/ POE) technologies that can supply huge microbiological reduction in potable water.

For example, there was a significant increase in sales of reverse osmosis (RO), ultraviolet light (UV) and ozone systems. However, these systems are expensive, complex and can require regular maintenance and replacement of key components, which can also be costly.

What if you could bring into being a low-priced and highly effective microorganism reducing device, say, a simple carbon block filter? Suppose this new carbon block has not only been rated for reducing cysts, but also has the ability to reduce viruses and bacteria by the range of 99.99 to 99.9999% (or 4-6 logs). This would mean full microbial capacity, not just bacteriostatic (control of bacterial growth).

If a regular carbon block could achieve these results without a significant pressure drop or reduction in chemical reduction efficiency, this would be the pure cup of carbon block filtration water purifiers. This technology is highly adaptable to existing systems, is inexpensive and has no significant impact on the flow resistance through the carbon block. The technology is to combine the use of a suitable porous structure of the carbon block and the chemical surface treatment process.

While the exact mechanism of destruction has not been systematically validated, this surface treatment appears to enhance capture and/or inactivation of bacterial or viral particles. This improvement is the result of a synergistic interaction between the two chemicals which, when combined in an organized surface-envelope complex, reduce a broad spectrum of microbial targets upon contact.

The only limit is the penetration speed of the microorganisms into the treated surface.

This process of diffusion and absorption/destruction is determined by the time the organism spends in the biocide facility, the size of the pores of the facility, the physical size of the organism and the number of ‘shots’; on a surface that the body can support.

Interestingly, the performance of the finish can be accurately predicted based on these four parameters.

The two chemicals used to prepare the treatment have little effect when used separately. They are generally non-toxic to mammals and do not flow back into the water when attached to carbon.

Current Testing Methods There are currently no official water treatment industry standards for evaluating the effectiveness of microbial water treatment technologies.

While NSF International is in the process of developing a standard for “Microbial Water Treatment,” specific test protocols are still under development and have yet to be submitted to the Joint Committee for approval as an ANSI/NSF standard. No date has been set for the new standard.

The Environmental Protection Agency’s Microbial Water Purifier Testing Standard and Protocol has long been the industry standard for evaluating the performance of microbiological “purifiers”. Although this is an industry reference, it should be emphasized that this document was original! created only as a document providing guidelines for the development of a water treatment standard.

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