Investigate of in situ sludge reduction in sequencing batch biofilm reactor:Performances,mechanisms and comparison of different carriers

作     者：Yonglei Wang Baozhen Liu Kefeng Zhang Yongjian Liu Xuexin Xu Junqi Jia 

作者机构：School of Municipal and Environmental EngineeringShandong Jianzhu UniversityJinan 250101China Co-Innovation Center of Green BuildingJinan 250101China Shandong Province City Water Supply and Drainage Water Quality Monitoring CenterJinan 250101China Shandong Huaihe River Basin Water Conservancy Administration Planning and Design InstituteJinan 250101China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2018年第12卷第5期

页      面：131-145页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the Natural Science Foundation of Shandong Province(ZR2016EEM32) the Doctoral Fund of Shandong Jianzhu University in 2015(XNBS1511) Scientific and technological Innovation Project of Planning and Design Institute of Huaihe River Basin Water Conservancy Administration Bureau of Shandong Province in 2018(SFSJKY2018-01) 

主　　题：In situ sludge reduction Biofilm Composite floating spherical carriers Microbial community SBBR 

摘      要：Biofilm is an effective simultaneous denitrification and in situ sludge reduction system,and the characteristics of different biofilm carrier have important implications for biofilm growth and in situ sludge *** this study,the performance and mechanism of in situ sludge reduction were compared between FSC-SBBR and SC-SBBR with constructed by composite floating spherical carriers(FSC)and multi-faceted polyethylene suspension carriers(SC),*** variation of EPS concentration indicated that the biofilm formation of FSC was faster than *** with SCSBBR,the FSC-SBBR yielded 0.16 g MLSS/g COD,almost 27.27%less *** average removal rates of COD and NH_(4)^(+)-N were 93.39% and 96.66%,respectively,which were 5.21% and 1.43% higher than the average removal rate of *** of the mechanisms of sludge reduction revealed that,energy uncoupling metabolism and sludge decay were the main factors for sludge reduction inducing 43.13%and 49.65%less sludge,respectively,in *** fluorescence spectroscopy and SUVA analysis showed that the hydrolytic capacity of biofilm attached in FSC was stronger than those of SC,and the hydrolysis of EPS released more DOM contributed to lysis-cryptic growth *** additional,Bacteroidetes and Mizugakiibacter associated with sludge reduction were the dominant phylum and genus in ***,the effect of simultaneous in situ sludge reduction and pollutant removal in FSC-SBBR was better.