A novel three-stage integrated biofilter(TSIBF)composed of acidophilic bacteria reaction segment(ABRS),fungal reaction segment(FRS)and heterotrophic bacteria reaction segment(HBRS)was constructed for the treatment of ...A novel three-stage integrated biofilter(TSIBF)composed of acidophilic bacteria reaction segment(ABRS),fungal reaction segment(FRS)and heterotrophic bacteria reaction segment(HBRS)was constructed for the treatment of odors and volatile organic compounds(VOCs)from municipal solid waste(MSW)comprehensive treatment plants.The performance,counts of predominant microorganisms,and bioaerosol emissions of a flill-scale TSIBF system were studied.High and stable removal efficiencies of hydrogen sulfide,ammonia and VOCs could be achieved with the TSIBF system,and the emissions of culturable heterotrophic bacteria,fungi and acidophilic sulfur bacteria were relatively low.The removal efficiencies of different odors and VOCs,emissions of culturable microorganisms,and types of predominant microorganisms were different in the ABRS,FRS and HBRS due to the differences in reaction conditions and mass transfer in each segment.The emissions of bioaerosols from the TSIBF depended on the capture of microorganisms and their volatilization from the packing.The rational segmentation,filling of high-density packings and the accumulation of the predominant functional microorganisms in each segment enhanced the capture effect of the bioaerosols,thus reducing the emissions of microorganisms from the bioreactor.展开更多
A new technical route of organic matter capture and carbon fixation is proposed in response of the increasingly strict emission standards of volatile organic compounds(VOCs)in petrochemical industry and the Chinese na...A new technical route of organic matter capture and carbon fixation is proposed in response of the increasingly strict emission standards of volatile organic compounds(VOCs)in petrochemical industry and the Chinese national strategic development goals of carbon peak and carbon neutralization.A closed loop from raw materials to adsorbents for gas treatment can be achieved by two key technical characteristics:(1)construct a new mesoporous adsorbent with complete desorption and regeneration function by carbon nanotubes(CNTs);(2)convert gaseous organic matter which cannot be recycled in liquid/gas state to CNTs.It realizes the resource integration of"turning waste into treasure"and maximizes the carbon emission reduction effect of waste gas treatment process without consuming extra precious fossil fuel,compared with the traditional technologies of VOCs treatments,including combustion or catalytic oxidation.What’s more,the increase in supply of various green electricity is expected to change the current situation of large investment and heavy cost burden of environmental protection technology,and make a great contribution to the national carbon peak and carbon neutrality policy.展开更多
基金by the key Projects in the National Science&Technology Pillar Program of China during the Twelfth Five-Year Plan Period(No.2013BAC25B00-004).
文摘A novel three-stage integrated biofilter(TSIBF)composed of acidophilic bacteria reaction segment(ABRS),fungal reaction segment(FRS)and heterotrophic bacteria reaction segment(HBRS)was constructed for the treatment of odors and volatile organic compounds(VOCs)from municipal solid waste(MSW)comprehensive treatment plants.The performance,counts of predominant microorganisms,and bioaerosol emissions of a flill-scale TSIBF system were studied.High and stable removal efficiencies of hydrogen sulfide,ammonia and VOCs could be achieved with the TSIBF system,and the emissions of culturable heterotrophic bacteria,fungi and acidophilic sulfur bacteria were relatively low.The removal efficiencies of different odors and VOCs,emissions of culturable microorganisms,and types of predominant microorganisms were different in the ABRS,FRS and HBRS due to the differences in reaction conditions and mass transfer in each segment.The emissions of bioaerosols from the TSIBF depended on the capture of microorganisms and their volatilization from the packing.The rational segmentation,filling of high-density packings and the accumulation of the predominant functional microorganisms in each segment enhanced the capture effect of the bioaerosols,thus reducing the emissions of microorganisms from the bioreactor.
基金supported by National Natural Science Foundation of China(22109085)Sinochem Quanzhou petrochemical Co.Ltd(A042019009)Sinopec Engineering Group Luoyang R&D center of Technologies(121022).
文摘A new technical route of organic matter capture and carbon fixation is proposed in response of the increasingly strict emission standards of volatile organic compounds(VOCs)in petrochemical industry and the Chinese national strategic development goals of carbon peak and carbon neutralization.A closed loop from raw materials to adsorbents for gas treatment can be achieved by two key technical characteristics:(1)construct a new mesoporous adsorbent with complete desorption and regeneration function by carbon nanotubes(CNTs);(2)convert gaseous organic matter which cannot be recycled in liquid/gas state to CNTs.It realizes the resource integration of"turning waste into treasure"and maximizes the carbon emission reduction effect of waste gas treatment process without consuming extra precious fossil fuel,compared with the traditional technologies of VOCs treatments,including combustion or catalytic oxidation.What’s more,the increase in supply of various green electricity is expected to change the current situation of large investment and heavy cost burden of environmental protection technology,and make a great contribution to the national carbon peak and carbon neutrality policy.
