[Objective] To find out the process conditions and influence factors for the biotreatment of odor gases of hydrogen sulfide（H2S） and ammonia（NH3）. [Method]The degradation performances on H2 S and NH3 were investig...[Objective] To find out the process conditions and influence factors for the biotreatment of odor gases of hydrogen sulfide（H2S） and ammonia（NH3）. [Method]The degradation performances on H2 S and NH3 were investigated during the start-up and stable operation process of biofilter with ceramsites as the packing microorganisms. [Result] The biofilm formation of the biofilter system to purify the waste gas of H2 S was completed within 9 d, and the removal rate of H2 S could reach up to 99% with the initial concentration of 100-1 000 mg/m^3 and empty bed residence time（EBRT） of142-290 s. The biofilm formation of the biofilter system to purify the waste gas of NH3 was completed within 10 d with the removal rate reaching up to 94.61%.[Conclusion] Under suitable conditions, the biofilter showed high removal rates to both H2 S and NH3.展开更多
The investigation of indoor-air quality in newly built and newly decorated residences in Chongqing revealed that the average concentration of formaldehyde and ammonia in these residences exceeded the upper limits of t...The investigation of indoor-air quality in newly built and newly decorated residences in Chongqing revealed that the average concentration of formaldehyde and ammonia in these residences exceeded the upper limits of the standard. The situation of indoor air pollution varied with the type of rooms. The results of investigation show that the indoor-air pollutants caused by decoration work should not be ignored anymore.展开更多
Plasma was purified in an immobilized L-asparaginase column. The predicted results are in good agreement with experimental data. It is indicated that the mathematical model is suitable for the mass transfer and react...Plasma was purified in an immobilized L-asparaginase column. The predicted results are in good agreement with experimental data. It is indicated that the mathematical model is suitable for the mass transfer and reaction of blood purification.展开更多
基金Supported by the Climbing Program for Graduates of Guangdong Province~~
文摘[Objective] To find out the process conditions and influence factors for the biotreatment of odor gases of hydrogen sulfide（H2S） and ammonia（NH3）. [Method]The degradation performances on H2 S and NH3 were investigated during the start-up and stable operation process of biofilter with ceramsites as the packing microorganisms. [Result] The biofilm formation of the biofilter system to purify the waste gas of H2 S was completed within 9 d, and the removal rate of H2 S could reach up to 99% with the initial concentration of 100-1 000 mg/m^3 and empty bed residence time（EBRT） of142-290 s. The biofilm formation of the biofilter system to purify the waste gas of NH3 was completed within 10 d with the removal rate reaching up to 94.61%.[Conclusion] Under suitable conditions, the biofilter showed high removal rates to both H2 S and NH3.
基金Key Laboratory on Heat and Gas Supply, Ventilation and Air Conditioning Engineering, Beijing Institute of Architecture and Engineering, and by the Foundation of Chongqing University for Key Teachers.
文摘The investigation of indoor-air quality in newly built and newly decorated residences in Chongqing revealed that the average concentration of formaldehyde and ammonia in these residences exceeded the upper limits of the standard. The situation of indoor air pollution varied with the type of rooms. The results of investigation show that the indoor-air pollutants caused by decoration work should not be ignored anymore.
基金the National Natural Science Foundation of China (No. 29806006).
文摘Plasma was purified in an immobilized L-asparaginase column. The predicted results are in good agreement with experimental data. It is indicated that the mathematical model is suitable for the mass transfer and reaction of blood purification.
