Activated Carbon Water Washed Bituminous Coal, 12 x 40 Mesh, 1 Cu Ft Box
Sold in a 1 Cubic Foot Box
12 x 40 mesh is an excellent filtration medium with excellent adsorptive properties. Used for the removal of taste and odors, chlorine, etc. Periodic backwashing is required in down-flow filters. Maximum carbon life is usually three years.
Granular activated carbon constitutes an excellent filtration media, having a high density with a balanced pore structure for more efficient absorption.
One of the most common applications for Activated Carbon is the removal of the undesirable taste present in many chlorinated water supplies. This taste is the result of the formation of chlorophenols, often present in raw waters that contain phenols and are subsequently treated with chlorine. These phenols are usually the product of industrial wastes. Even 0.1 ppm of chlorophenols can result in an undesirable taste. Activated carbon has for many years been successful in the adsorption of orthochlorophenol and the removal of free chlorine from water supplies. The end product is clean, fresh water with no objectionable tastes.
Activated carbon requires only periodic backwashing to eliminate accumulated suspended matter and to re-grade the filter bed. Activated carbon has an extremely high capacity but it must be replaced when the filter bed loses the capacity for removal of taste and odor.
To obtain maximum efficiency of the activated carbon in the absorption process, it is best to have the greatest possible surface area in the smallest practical volume. This is because the rate of absorption is proportional to the amount of surface area of the absorbing medium media. Activated carbon has a surface area of 800 sq. meters per gram. This results in high efficiency and a system economy.
When considering Activated Carbon for taste, odor, and color removal applications, it is necessary that the influent be relatively free of iron for maximum service life. It is also necessary that the influent be free from oil and other suspended matter, as these constituents may reduce the overall efficiency of the activated carbon.
Advantages:
- The large surface area results in an exceptionally high capacity and efficiency. Activated carbon is very hard so losses due to attrition are kept to a minimum.
- Activated carbon is an outstanding material for applications requiring taste, odor, and color removal from water with suspended matter present. This product can be used for filtering waters having a wide range of pH levels.
- Activated Carbon has a very high carbon-low ash content. Service rates of 5 rpm/sq. ft. are practical for ordinary taste, odor, and color loads
- Activated carbon will import a high "polish" to the filtered water
Physical Properties:
- Color.......................................Black
- Form........................................Granular
- Density....................................33 lbs/ cu. ft.
- Water Soluble Ash..................Less than 0.5%
- Iodine #...................................800
- Abrasion #...............................75 min
- Meets AWWA Standard..........B604-74
Conditions for Operation:
1. Water to be filtered should preferably be free of oil and suspended matter
2. Water to be filtered should be free of oil and turbidity for life in taste, odor, and color removal
pH: Wide range
Bed Depth: 26-30 in.
Backwash Rate: 8-10 gpm
Backwash Bed Expansion: 30-40% of bed depth
Service Flow Rate: 5 gpm/sq. ft.
