What advantages are attributed to using anthracite in filtration?

The use of anthracite in filtration systems is known for its significant advantages, particularly in terms of filtration rates. This type of media is less dense compared to other materials, which allows it to provide higher filtration rates. Higher filtration rates mean that water can pass through the filter more quickly while still being effectively purified.

Anthracite also tends to have lower backwash velocity requirements, which is another benefit in filtration processes. The lower backwash velocity needed can lead to reduced energy consumption during the cleaning process of the filter, making it a more efficient option. This efficiency is crucial in maintaining operational effectiveness and minimizing the resources used during the backwashing of filters.

The other options suggest disadvantages or functionalities that do not align with the known benefits of anthracite as a filtration medium. Higher filtration rates and increased efficiency make anthracite a preferred choice in various water treatment systems, contributing to its reputation in the industry.