Treatment of oilfield wastewater in moving bed biofilm reactors using a novel suspended ceramic biocarrier

被引:105
作者
Dong, Zhiyong [1 ]
Lu, Mang [2 ]
Huang, Wenhui [3 ]
Xu, Xiaochun [4 ]
机构
[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
[2] Jingdezhen Ceram Inst, Sch Mat Sci & Engn, Jingdezhen 333001, Jiangxi, Peoples R China
[3] China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China
[4] China Univ Geosci, Sch Geosci & Resources, Beijing 100083, Peoples R China
关键词
Produced water; Sepiolite; Fourier transform ion cyclotron resonance mass spectrometry; Biodegradation degree; SEQUENCING BATCH REACTOR; IN-SITU POLYMERIZATION; BIOLOGICAL TREATMENT; FOAMS; MICROORGANISMS; SEPIOLITE; MEMBRANE; REMOVAL; SYSTEMS; FILTER;
D O I
10.1016/j.jhazmat.2011.09.001
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, a novel suspended ceramic carrier was prepared, which has high strength, optimum density (close to water), and high porosity. Two different carriers, unmodified and sepiolite-modified suspended ceramic carriers were used to feed two moving bed biofilm reactors (MBBRs) with a filling fraction of 50% to treat oilfield produced water. The hydraulic retention time (HRT) was varied from 36 to 10 h. The results, during a monitoring period of 190 days, showed that removal efficiency of chemical oxygen demand was the highest in reactor 3 filled with the sepiolite-modified carriers, followed by reactor 2 filled with the unmodified carriers, with the lowest in reactor 1 (activated sludge reactor), at an HRT of 10 h. Similar trends were found in the removal efficiencies of ammonia nitrogen and polycyclic aromatic hydrocarbons. Reactor 3 was more shock resistant than reactors 2 and 1. The results indicate that the suspended ceramic carrier is an excellent MBBR carrier. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:123 / 130
页数:8
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