Microbial community succession and its correlation with reactor performance in a sponge membrane bioreactor coupled with fiber-bundle anoxic bio-filter for treating saline mariculture wastewater

被引：38

作者：

Song, Weilong ^{[1
,3
]}

Lee, Lai Yoke ^{[1
]}

You, Hong ^{[3
]}

Shi, Xueqing ^{[1
,2
]}

Ng, How Yong ^{[1
,4
]}

机构：

[1] Natl Univ Singapore, Dept Civil & Environm Engn, Ctr Water Res, 1 Engn Dr 2, Singapore 117576, Singapore

[2] Qingdao Univ Technol, Sch Environm & Municipal Engn, 11 Fushun Rd, Qingdao 266033, Shandong, Peoples R China

[3] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China

[4] Natl Univ Singapore, NUS Environm Res Inst, 5A Engn Dr 1, Singapore 117411, Singapore

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 295卷

关键词：

Microbial community succession; Membrane bioreactor; Bio-carriers; Saline wastewater; Mariculture wastewater; LEACHATE TREATMENT PERFORMANCE; MOVING-BED BIOFILM; SP NOV; GEN; NOV; FOULING MITIGATION; POLLUTANTS REMOVAL; SIMULTANEOUS NITRIFICATION; NITROGEN REMOVAL; BAMBOO CHARCOAL; MBR SYSTEMS;

D O I：

10.1016/j.biortech.2019.122284

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The application of MBR in high saline wastewater treatment is mainly constrained by poor nitrogen removal and severe membrane fouling caused by high salinity stress. A novel carriers-enhanced MBR system was successfully developed for treating saline mariculture wastewater, which showed efficient TN removal (93.2%) and fouling control. High-throughput sequencing revealed the enhancement mechanism of bio-carriers under high saline condition. Bio-carriers substantially improved the community structure, representatively, nitrifiers abundance (Nitrosomonas, Nitrospira) increased from 2.18% to 9.57%, abundance of denitrifiers (Sulfurimonas, Thermogutta, etc.) also rose from 3.81% to 14.82%. Thereby, the nitrogen removal process was enhanced. Noteworthy, ammonia oxidizer (Nitrosomonas, 8.26%) was the absolute dominant nitrifiers compared with nitrite oxidizer (Nitrospira, 1.13%). This supported the finding of shortcut nitrification-denitrification process in hybrid system. Moreover, a series of biomacromolecule degraders (Lutibacterium, Cycloclasticus, etc.) were detected in bio-carriers, which could account for the mitigation of membrane fouling as result of EPS and SMP degradation.

引用

页数：12

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