Granulated activated carbon, abbreviated as GAC, is often used for the purpose of water filtration these days. It may be used solitary or along with some other technologies for the purpose of disinfection or for some other end, to get the kind of water quality that is desired. For instance, it may be used along with ozone in the Biological Activated Carbon Process, which is a special type of treatment. This kind of carbon may be reactivated via thermal oxidation – that lets it be used many times.
High Adsorptive Capacity
A hybrid mixture of various kinds of graphite platelets, connected with each other by the help of non-graphite carbon bonding, Granular activated carbon (GAC) is known for its amazing adsorptive capacity. This makes it perfect for removing various kinds of contaminants from gases, liquids, air and water. This is an eco-friendly product which may be reactivated via thermal oxidation. It may be used for many times even for the same purpose.
Granular activated carbon particles are generally bigger in size as compared to the regular sand media, performance and design considerations are important for deriving the advantages of this kind of carbon in a surface water plant.
Powerful Physical Filtration
Granular activated carbon (GAC) is used in water treatment plants, proving to be a robust physical filtration medium. It is also beneficial in protecting the quality of water, through the adsorption of chemical contaminants, odor compounds, taste etc.
Surface water filtration, to use for consumption, is commonly used since water treatment started. The earliest designs used gravel and sand combinations, which helps reduce water turbidity. Regular practices of treatment use influent raw water chemical coagulation, chlorine treatment, filtration via gravel / sand media and to distribute to customers.
Organic Compound Removal
Granulated activated carbon, other than removing odor compounds and taste, also helps get rid of various other types of organic compounds. For instance, during groundwater treatment, contaminants that are man-made can be removed often with efficiency with the aid of GAC. It is highly important for groundwater as well as surface water, and is very important when you consider what the health benefits of pesticides and other specific compounds are. GAC’s particle size is described generally with the help of the mesh size. It ensures effective filtration rates and happens to be the choice of filtration of water that is supplied by the municipal lines. With a move towards bigger mesh size, GAC products of an even larger size – such as 8×16 and 8×20, have been developed. In direct filtration plants, these have turned out to be extremely effectual mediums. This is due to the fact that these allow higher filtration rates and deeper beds, along with acceptable head loss.