Rapid aerobic granulation using biochar for the treatment of petroleum refinery wastewater  

作　　者：Xin Wang Jie Ming Chun-Mao Chen Brandon A.Yoza Qian-Wei Li Jia-Hao Liang Geoffrey Michael Gadd Qing-Hong Wang 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,State Key Laboratory of Petroleum Pollution Control,China University of Petroleum-Beijing,Beijing 102249,China [2]Hawaii Natural Energy Institute,University of Hawaii at Manoa,Honolulu,HI 96822,USA [3]Geomicrobiology Group,School of Life Sciences,University of Dundee,Dundee DD15EH,Scotland,UK

出　　处：《Petroleum Science》2020年第5期1411-1421,共11页石油科学（英文版）

基　　金：supported in part by the Science Foundation of China University of Petroleum-Beijing,China(No.2462018BJB001 and 2462020XKJS04);the National Natural Science Foundation of China,China(No.21776307);the Independent Project Program of State Key Laboratory of Petroleum Pollution Control,China(Grant No.PPCIP2017004)。

摘　　要：Aerobic granular sludge technology has great potential for the treatment of petroleum refinery wastewater.However,strategies to shorten the granulation time and improvement the stability still need to be developed.In this work,biochar was prepared from waste petroleum activated sludge(biochar-WPS) and used in a sequencing batch reactor for the treatment of petroleum refinery wastewater.Biochar-WPS presented the surface area of 229.77 m2/g,pore volume of 0.28 cm3/g,H/C and O/C atomic ratios of 0.42 and 0.21,respectively.The porous structure and a high degree of hydrophilicity were found to facilitate microbial colonization and adhesion as well as particle aggregation.Application of biochar-WPS resulted in the formation of more substantial and stable aerobic granules(~66% of granules> 0.46 mm diameter) 15 days earlier compared with the control.The addition of biochar-WPS enhanced the average removal efficiency of chemical organic demand(~3%),oil(~4%)and total nitrogen(~10%) over the control.Increased microbial richness and diversity were observed within the formed granules and had an increased(~4%) proportion of denitrifying bacteria.These results indicate that an aerobic granulation mechanism using biochar-WPS is a feasible option for the treatment of petroleum refinery wastewater.

关 键 词：BIOCHAR Petroleum refinery wastewater Petroleum activated sludge Granular sludge Denitrifying bacteria 

分 类 号：X742[环境科学与工程—环境工程]