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Rapid aerobic granulation in an SBR treating piggery wastewater by seeding sludge from a municipal WWTP

文献类型： 外文期刊

作者： Liu, Jun 1 ; Li, Jun 1 ; Wang, Xiaodong 2 ; Zhang, Qi 3 ; Littleton, Helen 4 ;

作者机构： 1.Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Zhejiang, Peoples R China

2.Zhejiang Univ Technol, Coll Civil Engn & Architecture, Hangzhou 310014, Zhejiang, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

4.WEF Municipal WWT Design Comm, Richboro, PA 18954 USA

关键词： Rapid aerobic granulation;Piggery wastewater;Microbial community;Granular structure

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCES （ 影响因子：5.565； 五年影响因子：5.066 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Aerobic sludge granulation was rapidly obtained in the erlenmeyer bottle and sequencing batch reactor (SBR) using piggery wastewater. Aerobic granulation occurred on day 3 and granules with mean diameter of 0.2 mmand SVI30 of 20.3 mL/g formed in SBR on day 18. High concentrations of Ca and Fe in the raw piggery wastewater and operating mode accelerated aerobic granulation, even though the seed sludgewas fromamunicipal wastewater treatment plant (WWTP). Alpha diversity analysis revealed Operational Taxonomic Units, Shannon, ACE and Chao 1 indexes in aerobic granules were 2013, 5.51, 4665.5 and 3734.5, which were obviously lower compared to seed sludge. The percentages of major microbial communities, such as Proteobacteria, Bacteroidetes and Firmicutes were obviously higher in aerobic granules than seed sludge. Chloroflexi, Planctomycetes, Actinobacteria, TM7 and Acidobacteria showedmuch higher abundances in the inoculum. The main reasons might be the characteristics of raw piggery wastewater and granule structure. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

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