| 摘要 |
The present invention relates to the biofiltration of gases, specifically, to a packing material comprising a calcareous material of aquatic origin and to a biofilter bed (10) containing a calcareous material of aquatic origin as the packing material (20). The calcareous material may be derived from a marine alga or a marine calcareous sand and, preferably, the calcareous material is derived from Lithothamnium calcareum. The packing material (20) may consist essentially of calcareous material derived from Lithothamnium calcareum (20a) or, alternatively, the packing material may comprise calcareous material derived from Lithothamnium calcareum in admixture with a known packing material selected from peat, compost, wood chips, heather or coir (20b). The packing material (20) and biofilter bed (10) according to the invention may be used for cleaning gaseous effluents from industrial, municipal and agricultural plants. |
