Activated Carbon Filters (ACF): Essential Technology for Effective Water Purification and Contaminant Removal

Bisineer Activated Carbon Filters are designed to remove free chlorine, organic matter, odour and Colour present in the raw water and waste water.

Due to its high degree of micro porosity, activated carbons provide a huge surface area. Activated carbon filter operates through adsorption.

Adsorption is directly related to the surface area of the media. The Bigger surface area furnishes a big adsorption area for organic as well as any gas like chlorine molecules to attach themselves.

How it Works?

Activated carbon water treatment is basically used for two water treatment purposes and each work in totally different ways.

1. Chlorine Removal: Activated carbon may be used to remove chlorine with little degradation or damage to the carbon. De-chlorination occurs rapidly and flow rates are typically high. However, this process requires an extensive amount of surface area, and organics in the water will eventually fill up and block the pores of the carbon. Ultimately, the activated carbon filter will need to be replaced as its ability to de-chlorinate the water will slowly decline. Spent carbon can be re-activated; however, re-activated filters should only be used in waste-water treatment applications. One disadvantage is that as the chlorine is removed from the topmost layer of the media, the AC provides a damp environment ideal for the growth and proliferation of bacteria. Bacteria can cause problems in medical applications, or when using carbon as a pre-treatment to reverse osmosis.

2. Removal of Organic Matter: As water passes through an activated carbon filter, organic particles and chemicals are trapped inside through a process known as “adsorption”. The adsorption process depends upon 5 key factors:

• Physical properties of the activated carbon (surface area and pore size distribution).
• The chemical makeup of the carbon source (amount of hydrogen and oxygen).
• The chemical makeup and concentration of the contaminant.
• Water pH and temperature
• The length of time the water is exposed to the activated carbon filter (called empty bed contact time or EBCT).

The Activated Carbon Filters consist of Activated carbon granules supported by very fine Sand/Quartz filter media. Various grades of carbon are available for specialized treatments. These compact, high efficiency filters have been designed for eliminating turbidity and suspended particles present in feed water, with minimal pressure drop. The filters are highly effective and when properly operated, will produce sparking, clear water. Usually, the Activated carbon Filter is preceded by Pressure Sand Filter for efficient removal of Suspended Particles in the Raw Water.

APPLICATIONS

• Potable Water
• Cooling Water Circuits
• Swimming Pools
• Chemical Filtration
• Boiler Plant Condensates
• Effluent Plant Filtration

Advantages

• Low Initial Cost, long term Operation and Maintenance Charges
• Delivers high clarity treated water consistently
• Immune to normal fluctuations
• Operates at low pressure drops across filter media.
• Does not require highly skilled personnel for O and M
• Wide range of capacities