摘要
采用雷诺数表征液体环境的混合状态。利用一种自主研发的流体混合设备产生不同的液体流态，研究流态对枯草芽孢杆菌生长的影响。枯草芽孢杆菌是净化污水的一大主要细菌。结果发现，雷诺数越大，越有利于细菌的生长，具体表现为对数期时间缩短，到达平稳期时菌体浓度提高。此外，接种枯草芽孢杆菌后会消耗溶解氧，使培养基中的溶解氧维持在一个较低的水平（0～1mg／L）。
Reynolds number is adopted to characterize the fluid mixing state of the environment .A self - developed fluid mixing device is developed to produce different liquid fluidization and to study the effects of flow patterns on the growth of bacillus subtilis .Bacillus subtilis is one main kind of bacteria to purify wastewater .It is found that the larger Re ,the more conducive to the growth of bacteria ,as evidenced by the logarithmic phase shortened and that bacteria concentration is in-creased when reaching stationary phase .Besides ,it can consume dissolved oxygen after inoculation with Bacillus subtilis , keeping the dissolved oxygen in the medium at a lower level （0 ~ 1mg/L） .
出处
《工业安全与环保》
北大核心
2015年第7期21-23,36,共4页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(21177067)
江苏省自然基金重点项目(BK2010034)
南通市社会发展项目(HS2012001)
南通市重点实验平台项目(CP12011001)
江苏省青蓝工程计划项目资助
