Method for treating nitrobenzene exhaust gas by coupling bacterium biological filter bed
A biological filter bed, nitrobenzene technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of long start-up period of fungal filter bed, easy to contaminate bacteria, low metabolism rate, etc.
Active Publication Date: 2017-07-04
NANJING POLYTECHNIC INSITUTE
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Abstract
The invention relates to a method for treating nitrobenzene exhaust gas by a coupling bacterium biological filter bed. Polyurethane foam is used as a filler, the aerobic activated sludge of a nitrobenzene wastewater treatment plant is used as an inoculated strain, and the pH of the nutrient solution is adjusted to 5.0 so that a fungal-bacterial coupled biological filter bed is constructed. Fungi can directly contact with nitrobenzene exhaust gas through hyphae so that the problem that hydrophobic VOCs in the traditional bacterial filter bed have low mass transfer efficiency is solved. Based on the high biological diversity and mineralization capacity of bacteria, fungal metabolites can be further mineralized into carbon dioxide and water. When the nitrobenzene concentration is 300 to 500 mg*m<-3>, the removal rate can reach 95% to 97%, and the removal load can reach 52.4 to 85.5 g*m<-3>*h<-1>.
Application Domain
Gas treatmentDispersed particle separation +1
Technology Topic
Bacterial FilterChemistry +13
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PUM
Property | Measurement | Unit |
Side length | 4.0 ~ 6.0 | mm |
Aperture | 0.8 | mm |
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