[1] Xie Huifang, Zhang Jinhua, Xin Wenli, Hu Canyang, et al. Full-scale application of microbial agent on in-situ sludge reduction [J]. Journal of Southeast University (English Edition), 2016, 32 (4): 502-507. [doi:10.3969/j.issn.1003-7985.2016.04.018]

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

32

Issue:

2016 4

Page:

502-507

Research Field:

Environmental Science and Engineering

Publishing date:

2016-12-20

Info

Title:

Full-scale application of microbial agent on in-situ sludge reduction

Author(s):

Xie Huifang¹;  Zhang Jinhua¹;  Xin Wenli¹;  Hu Canyang¹;  Yan Mei¹Zhang Qing¹;  He Qihuan¹;  Zhou Jiancheng²

¹School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
²School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China

Keywords:

wastewater treatment;  dosed anoxic/oxic(A/O)process;  diversity of microbial community;  kinetic parameters

PACS:

X703.1

DOI:

10.3969/j.issn.1003-7985.2016.04.018

Abstract:

The full-scale application of Tx-1, a multifunctional microbial agent, was carried out for 8 months in an anoxic/oxic(A/O)municipal wastewater treatment process. The results show that the Tx-1 dosed system can obtain good effluent characteristics while minimizing sludge production and energy consumption. The total phosphorus(TP)is lower than 0.5 mg/L in effluent without any chemical regent added. The discharged dry sludge per 10 000 m³ wastewater D_wat decreases from 1.4 to 0.5 t. For per cubic meter wastewater, the air supply decreases from 6.0 to 5.1 m³ and the electricity consumption decreases from 0.412 - 0.425 kW·h to 0.331 kW·h. The addition of Tx-1 can improve the substrate removal constant and decrease the microorganism growth yield coefficient of activated sludge. At the same time, the structure of the microbial community changes and the biodiversity increases by adding Tx-1. The abundance of polyphosphate accumulating organisms(PAO), Comamonadaceae and Tetrasphaera, increased. Effective microbial agent is a potential way to combine in-situ sludge minimization with contaminants removal.

References:

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Memo

Memo:

Biography: Xie Huifang(1972—), female, doctor, associate professor, huifanxie@hotmail.com.
Foundation item: The Natural Science Foundation of Jiangsu Province(No.BK20151485).
Citation: Xie Huifang, Zhang Jinhua, Xin Wenli, et al. Full-scale application of microbial agent on in-situ sludge reduction[J].Journal of Southeast University(English Edition), 2016, 32(4):502-507.DOI:10.3969/j.issn.1003-7985.2016.04.018.

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