| 摘要 |
A modular biofiltration support system is quickly erectable in virtually any size and shape using plastic modules that are interconnected at the site. Included in the system are bed platform modules which assemble together to form a bed platform to support the weight of the biofilter medium within the area defined by the frame, and a multiplicity of bed support legs which are assembled into the bed platform modules to hold the bed platform at a raised position above the ground, defining a plenum for entering gases, between the ground and the bed platform. In one embodiment, at least some of the legs include air directing vanes which can be oriented in positions to cause generally even distribution of the gases within the plenum. The bed platform modules have openings to direct the gases to flow upwardly through the biofilter medium. The periphery of the plenum within the bed platform preferably is substantially closed, and this can be by taller peripheral modules in one embodiment, or by angled edge platform modules in another embodiment, that form a slope from the bed platform down to the ground or base.
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