目的建立阿奇霉素滴眼液微生物限度检查方法。并对方法进行验证。方法按中国药典2005年版二部所载滴眼剂项下要求进行试验。采用薄膜过滤法,冲洗量细菌为300 m l,霉菌和酵母菌为300 m l。结果样品管无菌生长,六株阳性对照菌生长良好。...目的建立阿奇霉素滴眼液微生物限度检查方法。并对方法进行验证。方法按中国药典2005年版二部所载滴眼剂项下要求进行试验。采用薄膜过滤法,冲洗量细菌为300 m l,霉菌和酵母菌为300 m l。结果样品管无菌生长,六株阳性对照菌生长良好。结论采用薄膜过滤法验证试验进行阿奇霉素滴眼液微生物限度检查,方法有效可行。展开更多
Experiments on treatment of domestic wastewater by membrane bioreactors were carried out.The results showed that this process could produce good quality effluent with low COD,turbidity and total count of bacteria.With...Experiments on treatment of domestic wastewater by membrane bioreactors were carried out.The results showed that this process could produce good quality effluent with low COD,turbidity and total count of bacteria.With intermittent operation and continuous aeration,the membrane flux was kept steady.The mechanisms of removing COD through membrane,the structure of membrane and filtration resistance were also discussed.展开更多
Biomass and microbial activity in backwashing processes of a biofilter for tertiary treatment were investigated. The microbial groups revealed new distribution along the biofilter depth after low flow rate backwashing...Biomass and microbial activity in backwashing processes of a biofilter for tertiary treatment were investigated. The microbial groups revealed new distribution along the biofilter depth after low flow rate backwashing for a short time. Then the start-up process was accelerated by backwashing. The biomass profile and microbial activity profile both varying with depth before and after backwashing, can be mathematically described by quadratic equations. Using the profiles, the difference of oxygen demand can be calculated to determine the airflow rate during backwashing. Combined with the difference between biofilters and rapid gravity filters, analysis of biomass and microbial activity can determine more accurately the required airflow rate during backwashing.展开更多
文摘目的建立阿奇霉素滴眼液微生物限度检查方法。并对方法进行验证。方法按中国药典2005年版二部所载滴眼剂项下要求进行试验。采用薄膜过滤法,冲洗量细菌为300 m l,霉菌和酵母菌为300 m l。结果样品管无菌生长,六株阳性对照菌生长良好。结论采用薄膜过滤法验证试验进行阿奇霉素滴眼液微生物限度检查,方法有效可行。
基金Supported by the Ministry of Science and Technology of China!(No.96- 92 0 - 0 9- 0 4 )
文摘Experiments on treatment of domestic wastewater by membrane bioreactors were carried out.The results showed that this process could produce good quality effluent with low COD,turbidity and total count of bacteria.With intermittent operation and continuous aeration,the membrane flux was kept steady.The mechanisms of removing COD through membrane,the structure of membrane and filtration resistance were also discussed.
基金Project (No. 2002BA806B04) supported by the National Techno-logical Research Program of China
文摘Biomass and microbial activity in backwashing processes of a biofilter for tertiary treatment were investigated. The microbial groups revealed new distribution along the biofilter depth after low flow rate backwashing for a short time. Then the start-up process was accelerated by backwashing. The biomass profile and microbial activity profile both varying with depth before and after backwashing, can be mathematically described by quadratic equations. Using the profiles, the difference of oxygen demand can be calculated to determine the airflow rate during backwashing. Combined with the difference between biofilters and rapid gravity filters, analysis of biomass and microbial activity can determine more accurately the required airflow rate during backwashing.
