Patent ID: 8222021

Claim:
A waste gas treatment process using biological treatment technology, comprising: filtering waste gas to be treated; and introducing the filtered waste gas into a biological treatment system periodically and switchably from two ends thereof; wherein the step of introducing a waste gas into a biological system further includes forming biofilter material, and the step of forming biofilter material includes: forming a first mixture in a first container by evenly mixing a medium with an isotonic solution, of which the medium includes microorganism having capability of decomposing the waste gas; forming a first aggregated microorganism by centrifuging the first mixture; forming a second mixture in a second container by evenly mixing the first aggregated microorganism with a first culture medium and a first contaminant until a certain numbers of the first contaminant being removed; forming a second aggregated microorganism by centrifuging the second mixture; forming a third mixture in a third container by evenly mixing the second aggregated microorganism with a second culture medium and a second contaminant until a certain numbers of the second contaminant being removed; forming a fourth mixture by repeating the above steps until no containment being can be removed and then propagating and culturing the microorganism; forming a third aggregated microorganism by centrifuging the fourth mixture; forming a fifth mixture in a fourth container by evenly mixing the third aggregated microorganism with a second isotonic solution; diluting the fifth mixture and inoculating it in a container having a fourth culture medium; forming a sixth mixture by inoculating a colony in a container having a fifth culture medium, of which the colony is picked from one having a maximum number of identical colonies by using inoculating loops, until the sixth mixture has a number of microorganism up to 107 to 1010 CFU/ml; forming a fourth aggregated microorganism by centrifuging the sixth mixture; and forming the biofilter material having biofilm by placing the fourth aggregated microorganism in a container having a sixth culture medium, and adding a support therein.