Patent ID: 7157271

Claim:
A module for a biological decomposition apparatus for malodors and volatile organic chemicals comprising: a housing in which an inject port of polluted gas and an exhaust port of treated gas are installed, a plurality of consecutive carrier layers with carriers for microorganisms loaded on support lathes in said housing, a plurality of spray tubes, each installed between an upper surface of a carrier layer of said plurality of carrier layers and an inner upper surface of a portion of said housing and injecting circulating water with nutrients therein onto an upside of a first one of the plurality of carrier layers, a stirring device for detaching microorganisms over-formed onto the carriers of the plurality of carrier layers by shaking said plurality of carrier layers; and, the microorganisms on the carriers are detached by said stirring device, and removed with said circulating water sprayed by said plurality of spray tubes in order to regulate a mass of the microorganisms in the plurality of carrier layers, wherein, in said plurality of carrier layers for microorganisms, each of the plurality of carrier layers has a net structure or a foamy structure prepared with one of, or a mixture of, more than two substances selected from a group comprising polystyrene, polyethylene, polypropylene and polyurethane, and further comprising a pH controller regulating a pH of said circulating water and an injecting device to inject the nutrients into the circulating water, wherein the circulating water is passed through a screen to remove biological membrane separated from a surface of the carriers and is recirculated to be sprayed by the plurality of spray tubes.