Performance and microbial community structure of a polar Arctic Circle aerobic granular sludge system operating at low temperature

被引：48

作者：

Gonzalez-Martinez, Alejandro ^{[1
]}

Munoz-Palazon, Barbara ^{[2
]}

Maza-Marquez, Paula ^{[2
]}

Rodriguez-Sanchez, Alejandro ^{[2
]}

Gonzalez-Lopez, Jesus ^{[2
]}

Vahala, Riku ^{[1
]}

机构：

[1] Aalto Univ, Sch Engn, Dept Built Environm, POB 15200, FI-00076 Espoo, Finland

[2] Univ Granada, Inst Water Res, Ramon y Cajal 4, E-18071 Granada, Spain

来源：

BIORESOURCE TECHNOLOGY | 2018年 / 256卷

关键词：

Aerobic granular sludge; Low temperature; Wastewater treatment; Massive parallel sequencing; North Pole; WASTE-WATER TREATMENT; PHOSPHATE REMOVAL; NITROGEN; REACTOR; DYNAMICS;

D O I：

10.1016/j.biortech.2018.01.147

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of this work was to study the performance and microbial community structure of a polar Arctic Circle aerobic granular sludge (AGS) system operating at low temperature. Thus, an AGS bioreactor was operated at 7, 5 and 3 degrees C of temperature using a cold-adapted sludge from Lapland. At 5 degrees C, it yielded acceptable conversion rates, in terms of nitrogen, phosphorous, and organic matter. However, under 3 degrees C a negligible nitrogen and phosphorous removal performance was observed. Below 5 degrees C, scanning electron microscopy studies showed a wispy, non-dense and irregular granular structure with a strong outgrowth of filamentous. Moreover, Illumina next-generation sequencing showed a heterogeneous microbial population where SM1K20 (Archaea), Trichosporon domesticum (Fungus), and Zooglea, Arcobacter and Acinetobacter (Bacteria) were the dominant phylotypes. Our study suggests that AGS technologies inoculated with North Pole sludge could be operated, in cold regions for a period longer than 3 months (winter season) under 5 degrees C of water temperature.

引用

页码：22 / 29

页数：8

共 34 条

[1] Potential cause of aerobic granular sludge breakdown at high organic loading rates [J].