| The customized carbon removal equipment, specially | | | | penetrate the carbon, carbon appears to be |
| designed with a filtration canister to control the dust | | | | compacted, carbon level in beds are 2' low, etc.). This |
| created from handling the carbon. The spent carbon | | | | information is just as important as the lab testing. |
| is contained in super-sacs for ease of handling and | | | | The lab test measures the Butane Working Capacity |
| disposal. | | | | (BWC) and Dust Content of the carbon sample. The |
| For gasoline vapor recovery units, a trained vapor | | | | BWC measures the ability of activated carbon to |
| service technician is the lead man on the change-out. | | | | absorb and desorb under normal loading conditions. |
| We can prep the VRU prior to shutting down, inspect | | | | The Dust Content is measured using seven sieve |
| the inside of the carbon beds and make any | | | | analysis trays according to the carbon's mesh size |
| necessary repairs, complete saturation of new | | | | (4x14, 6x16, etc.). Anything measuring below the |
| carbon, restart the VRU and make any necessary | | | | smallest mesh size (14, 16, etc.) is counted as dust. |
| adjustments to its operation. | | | | Both the BWC and Dust Content test results are |
| The technician has to have the required OSHA | | | | reported in percentage compared to new carbon |
| training, including confined space, and is equipped with | | | | specifications. A full written report and |
| the required PPE. | | | | recommendations are provided with each test. |
| Carbon sampling and testing is a quality control | | | | Carbon is handled one of two ways once removed |
| measure, necessary to track the condition and | | | | from service. It is either disposed of or recycled. |
| performance of the carbon. It is important when | | | | Many times the carbon manufacturer will take back |
| sampling carbon that the sample represents the | | | | the old carbon for recycling, as in the case of Calgon. |
| whole load and not just a portion. The service | | | | They require the following three conditions be met: 1) |
| technicians do this by sampling the top, middle and | | | | The new carbon must be purchased from them, 2) |
| bottom of each carbon bed. Each technician is trained | | | | The spent carbon must be a coal-based product, and, |
| and properly equipped to provide this service. | | | | 3) The spent carbon must pass a series of analytical |
| Observations are documented during the sampling | | | | tests for recycling approval. |
| process even before lab testing begins (i.e., dust | | | | Waste disposal companies are recommended based |
| apparent in sample, sample probe would not | | | | on the geographical location of the job. |