![]() In this article, the authors offer a safe, fun, effective way to introduce geology concepts to elementary school children of all ages: "coring" layer cakes. All rights reserved.ĮRIC Educational Resources Information Center Therefore, SMW highlighted the organic components in cake layer, but weakened the inorganic functions in practical MBR operation. However, SMW promoted bacterial metabolism during cake layer formation, thus aggravated the accumulation of organic components into cake layer. Additionally, inorganic components, especially Si and Al, in PMW accumulated into cake layer and strengthened the cake layer structure, inducing severer biofouling. Results showed that PMW led to rough cake layer surface with particles, and the aggravation of cake layer formation with thinner and denser cake layer. ![]() Two laboratory-scale anoxic/oxic MBRs were operated for over 90days with SMW and PMW, respectively. This study aimed to identify the comparison between SMW and PMW in cake layer characteristic analysis of MBR. In previous studies, cake layer analysis in membrane bioreactor (MBR) was both carried out with synthetic and practical municipal wastewater (SMW and PMW), leading to different results. Zhou, Lijie Zhuang, Wei-Qin Wang, Xin Yu, Ke Yang, Shufang Xia, Siqing New insights into comparison between synthetic and practical municipal wastewater in cake layer characteristic analysis of membrane bioreactor. Thus, the postponed cake layer fouling was due to the changing features of the complexes on the membrane surface caused by TiO2 NPs. Since TiO2 NPs inhibited the interactions between the inorganic and the organic compounds, the inorganic compounds (especially SiO2) were prevented from depositing onto the membrane surface. ![]() ![]() Line-analysis and dot map of energy-dispersive X-ray were also carried out. Concentrations of fatty acids and cholesterol in the cake layer increased due to the acute response of bacteria to the toxicity of TiO2 NPs. TiO2 NPs showed obvious effects on the structure and the distribution of the organic and the inorganic compounds in cake layer. With nanometer sizes, TiO2 NPs were found to aggravate membrane pore blocking but postpone cake layer fouling. Zhou, Lijie Zhang, Zhiqiang Xia, Siqing Jiang, Wei Ye, Biao Xu, Xiaoyin Gu, Zaoli Guo, Wenshan Ngo, Huu-Hao Meng, Xiangzhou Fan, Jinhong Zhao, JianfuĮffects of the suspended titanium dioxide nanoparticles (TiO2 NPs, 50 mg/L) on the cake layer formation in a submerged MBR were systematically investigated. Effects of suspended titanium dioxide nanoparticles on cake layer formation in submerged membrane bioreactor. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |