Aqueous Phase Activated Carbon |
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GRS probably has the largest range of aqueous phase actiavated carbon treatment vessels within the United Kingdom.
Where the carbon in a competitors vessel may have to be changed once or several times during a project, the GRS range enables the purchaser to evaluate the most cost effective and efficient vessel for the project.
Selection of the appropriate sized carbon treatment vessel is typically based on four parameters:
- Physical capacity to handle a given flow rate. It is not good practice to operate at a flow rate near the maximum hydraulic capacity of a vessel for more than a few days;
- The contact time required for efficient adsorption of a given contaminant and/or inlet concentration. Phenols for example (common on old gaswork sites) require a minimum 20 mins residence time.
- The duration of the project
- The mass of contaminant anticipated to be adsorbed during the project. If you know the anticipated mass of contaminant will lead to a requirement for 5 or 10 tonnes of carbon, why hire 1 tonne vessels which require frequent changing? even if the flow rate is low.
Furthermore, the faster the flow rate passing through a given vessel, the deeper the concentration gradient within the carbon bed. As this advances through the bed (as the carbon above becomes exhausted) the tail will reach the outlet faster, potentially leading to concentrations above the consent and the need to change carbon, even though the carbon still has adsorption capacity. As such, a lower flow rate with a shallower concentration gradient is more efficient. the potential wasteage of carbon is also a key reason why a second vessel in series with the first is a good idea as it allows the operator to use the first vessel to the maximum without risk of a breach of the discharge consent.
All GRS vessels are available for rental for as little as 1 week up to 3 years or more.
The GRS Range of Vessels:
- HY1 (95Kg drum/<1m³/hr)
- SAK400 (200 Kg/2m³/hr)
- SAK600 (300 Kg/4m³/hr)
- SAK1000 (500kg/4m³/hr)
- BI 25 (1 tonne/10m³/hr)
- BI 50 (2 tonnes/20m³/hr)
- BI 120 (5 tonnes/40m³/hr)
- BI 250 (10 tonnes/100m³/hr)
- BI 500 (20 tonne/200m³/hr)
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in-situ remediation
Soil Vapour Extraction/Air Sparging
Dual-Phase (High Vacuum) Extraction
Multi-Phase (High Vacuum) Extraction
Product Recovery Technologies
water treatment
aqueous-phase activated carbon
air strippers and vacuum strippers
filters/settlement/oil-water separation/ion exchange
vapour treatment
vapour phase activated carbon
catalytic oxidation
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