Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Industrial Additives Functions
- Technologies
Features & Benefits
- Industrial Additives Features
- Features
- Calgon Carbon’s reagglomerated coal-based granular activated carbons have several properties which provide superior performance in a wide range of applications.
- Produced in the United States from a pulverized blend of high quality, domestically mined bituminous coals resulting in a consistent, high quality product.
- The activated carbon granules are uniformly activated through the whole granule, not just the outside. This results in excellent adsorption properties and constant adsorption kinetics in a wide range of applications.
- The reagglomerated structure ensures proper wetting while also eliminating floating material.
- High mechanical strength relative to other raw materials, thereby reducing the generation of fines during backwashing and hydraulic transport.
- Carbon bed segregation is retained after repeated backwashing, ensuring the adsorption profile remains unchanged and therefore maximizing the bed life.
- Reagglomerated with a high abrasion resistance, which provides excellent reactivation performance High density carbon resulting in a greater adsorption capacity per unit volume.
- Recycling and Reactivation
Though FILTRASORB is 100-percent freshly manufactured virgin GAC, it can be recycled and reused through thermal reactivation to restore its adsorptive capacity. This eliminates the costs and long-term liability associated with the disposal of spent GAC, and provides customers with a consistent, reliable supply of filtration media.
Applications & Uses
- Markets
- Applicable Processes
- Industrial Additives End Use
- Applications
- Industrial Wastewater
- Groundwater
- Surface Water
- Pond/Aquarium/ Swim
- Bottle & Brewing
- Water Processing
- Pharmaceuticals
- Environmental Water
- Food & Beverage
- Drinking Water Industrial
- Water Reuse
- Drinking Water (Potable)
- Granular Activated Carbon
- Municipal
- Reactivation
FILTRASORB 816 activated carbon can be used in a variety of liquid phase applications for the removal of dissolved organic compounds. FILTRASORB 816 has been successfully applied for over 40 years in applications such as drinking and process water purification, wastewater treatment, and food, pharmaceutical, and industrial purification.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Apparent Density (Tamped) | 0.58 | g/cc | — |
| Effective Size | 1.3 - 1.5 | mm | — |
| Non-Wettable | max. 1 | % | — |
| Water Extractables | max. 1 | % | — |
| Uniformity Coefficient | max. 1.4 | — | — |
| Screen Size (by Weight, US Sieve Series on 8 mesh) | max. 15 | % | — |
| Moisture Content (by Weight) | max. 2 | % | — |
| Screen Size (by Weight, US Sieve Series Through 16 mesh) | max. 5 | % | — |
| Abrasion Number | min. 75 | — | — |
| Iodine Number | min. 900 | mg/g | — |
Technical Details & Test Data
- Process
This activated carbon is made from select grades of bituminous coal through a process known as reagglomeration to produce a high activity, durable, granular product capable of withstanding the abrasion associated with repeated backwashing, hydraulic transport, and reactivation for reuse. The raw coal is mined and subsequently manufactured into GAC in the United States to ensure the highest quality and consistency in the finished product. Activation is carefully controlled to produce a significant volume of both low and high energy pores for effective adsorption of a broad range of high and low molecular weight organic contaminants. FILTRASORB 816 is also formulated to comply with all the applicable provisions of the AWWA Standard for Granular Activated Carbon (B604), the stringent extractable metals requirements of NSF/ANSI 61, and the Food Chemicals Codex.
- Typical Pressure Drop
Down Flow Pressure Drop at 13°C/55°F
Based on a backwashed and segregated bed
- Typical Bed Expansion During Backwash
Bed Expansion During Backwash at 13°C/55°F
Based on a backwashed and segregated bed
- Conditioning and Backwashing
Backwashing and conditioning fresh GAC before placing into operation is critical to GAC performance. The reasons for backwashing before placing fresh media online are to: (1) size segregate the media so subsequent backwashing will return the media to the same relative position in the bed, (2) remove any remaining air from the bed, and (3) remove media fines which can lead to excessive pressure drop and flow restriction. In addition, proper backwashing is a crucial step to collecting the most representative and meaningful post-start up data on compounds of interest, such as metals listed in the NSF/ANSI 61 standard.
Below are the recommended steps for proper conditioning and backwashing of GAC based on Filtrasorb 816 GAC being backwashed at 55°F:
- Fully submerge GAC bed in clean, contaminant free water for at least 16 hours (overnight).
- Open backwash inlet and begin up-flow at 10 gpm/ft2 for 2 minutes.
- Increase flow to 14 gpm/ft2 and maintain for 2 minutes.
- Increase flow to 18 gpm/ft2 and maintain for 2 minutes 5. Increase flow to 22 gpm/ft2 and maintain for 30 minutes (Duration representative of initial backwash conditions. Required duration during operational backwashes can be shorter but will vary by utility, solids load, and GAC throughput.)
- Decrease flow to 14 gpm/ft2 and maintain for 2 minutes.
- Decrease flow to 18 gpm/ft2 and maintain for 2 minutes
- Decrease flow to 10 gpm/ft2 and maintain for 2 minutes
- Close backwash inlet and stop flow
- Design Considerations
FILTRASORB 816 activated carbon is typically applied in down-flow packed-bed operations using either pressure or gravity systems. Design considerations for a treatment system is based on the user’s operating conditions, the treatment objectives desired, and the chemical nature of the compound(s) being adsorbed.
Safety & Health
- Safety
Wet activated carbon can deplete oxygen from air in enclosed spaces. If use in an enclosed space is required, procedures for work in an oxygen deficient environment should be followed.