Qualifizierungssystem Aktivkohlereaktivierung Stadtwerke Düsseldorf AG

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The reactivated activated carbon must comply with the requirements of DIN EN 12915-2, in particular: - Particle size (after sieving <0.6 mm): 8 x 30 mesh (0.6 - 2.36 mm) - Fines content max. 5%, oversize content max. 15% - Uniformity coefficient U (d60/d10) should be <2.1 - Increase in iodine number by at least 200 mg iodine/g activated carbon in accordance with DVGW rule W 239. After reactivation, the iodine number must not be less than 750 mg iodine/g activated carbon. The iodine number of the used and the reactivated activated carbon must be stated. - The test procedures in DIN EN 12915-2, Section 8 “Test procedures” must be applied, or when other procedures are used (ATSM, in-house procedures) it must be proven that the comparability of the applied methods with the test procedures specified in DIN EN 12915-2. The contractor must include with every delivery of reactivated activated carbon an analysis certificate specifying the data of the returned activated carbon (reactivated and fresh coal). The following information is expected: - Particle size distribution according to EN 12902 - Uniformity coefficient U according to EN 12915-1 - Vibration density or bulk density…

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