Treatment of oil sands process-affected water using moving bed biofilm reactors: With and without ozone pretreatment

被引：54
作者：
Shi, Yijing [1 ]
Huang, Chunkai [1 ]
Rocha, Ketley Costa [1 ]
El-Din, Mohamed Gamal [1 ]
Liu, Yang [1 ]
机构：
[1] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2, Canada
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 192卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Oil sands process-affected water (OSPW); Moving bed biofilm reactor (MBBR); Biofilm; Microbial community; Ozonation; NAPHTHENIC ACIDS; WASTE-WATER; OPERATIONAL PERFORMANCE; MICROBIAL COMMUNITIES; NITROGEN REMOVAL; BIODEGRADATION; TOXICITY; OZONATION; IMPACT; TRANSPORT;
D O I：
10.1016/j.biortech.2015.05.068
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Two moving bed biofilm reactors (MBBRs) were operated to treat raw (untreated) and 30 mg/L ozone-treated oil sands process-affected water (OSPW). After 210 days, the MBBR process showed 18.3% of acid-extractable fraction (AEF) and 34.8% of naphthenic acids (NAs) removal, while the ozonation combined MBBR process showed higher removal of AEF (41.0%) and NAs (78.8%). Biodegradation of raw and ozone treated OSPW showed similar performance. UPLC/HRMS analysis showed a highest NAs removal efficiency with a carbon number of 14 and a - Z number of 4. Confocal laser scanning microscopy (CLSM) showed thicker biofilms in the raw OSPW MBBR (97 +/- 5 mu m) than in the ozonated OSPW MBBR (71 +/- 12 mu m). Quantitative polymerase chain reaction (q-PCR) results showed higher abundance of gene copies of total bacteria and nitrogen removal relevant bacteria in the ozonated OSPW MBBR, but no significant difference was found. MiSeq sequencing showed Proteobacteria, Nitrospirae, and Acidobacteria were dominant. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：219 / 227
页数：9
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