References

1. G.P. Sheng, H.Q. Yu, X.Y. Li, Extracellular polymeric substances (EPS) of microbial aggregates in biological wastewater treatment systems: a review, Biotechnol. Adv., 28 (2010) 882–894.
2. B.J. Ni, H.Q. Yu, Microbial products of activated sludge in biological wastewater treatment systems: a critical review, Crit. Rev. Env. Sci. Technol., 42 (2012) 187–223.
3. A.G. Geyik, F. Çeçen, Production of protein- and carbohydrate- EPS in activated sludge reactors operated at different carbon to nitrogen ratios, J. Chem. Technol. Biotechnol., 91 (2016) 522–531.
4. X. Guo, X. Wang, J. Liu, Composition analysis of fractions of extracellular polymeric substances from an activated sludge culture and identification of dominant forces affecting microbial aggregation, Sci. Rep., 6 (2016) 1–9.
5. Y.H. Shi, J.H. Huang, G.M. Zeng, Y. Gu, Y. Chen, Y. Hu, B. Tang, J. Zhou, Y. Yang, L. Shi, Exploiting extracellular polymeric substances (EPS) controlling strategies for performance enhancement of biological wastewater treatments: an overview, Chemosphere, 180 (2017) 396–411.
6. B.B. Wang, X.T. Liu, J.M. Chen, D.C. Peng, H. Feng, Composition and functional group characterization of extracellular polymeric substances (EPS) in activated sludge: the impacts of polymerization degree of proteinaceous substrates, Water Res., 129 (2018) 133–142.
7. L. Tang, G.M. Zeng, G.L. Shen, Y.P. Li, Y. Zhang, D.L. Hang, Rapid detection of picloram in agricultural field samples using a disposable immune membrane-based electrochemical sensor, Environ. Sci. Technol., 42 (2008) 1207–1212.
8. A. Raszka, M. Chorvatova, J. Wanner, The role and significance of extracellular polymers in activated sludge, Part I: literature review, CLEAN–Soil Air Water, 34 (2010) 411–424.
9. P. Zhang, F. Fang, Y.P. Chen, Y. Shen, W. Zhang, J.X. Yang, C. Li, J.S. Guo, S.Y. Liu, Y. Huang, S. Li, X. Gao, Y. Peng, Composition of EPS fractions from suspended sludge and biofilm and their roles in microbial cell aggregation, Chemosphere, 117 (2014) 59–65.
10. B.B. Wang, Q. Chang, D.C. Peng, Y.P. Hou, H.J. Li, L.Y. Pei, A new classification paradigm of extracellular polymeric substances (EPS) in activated sludge: separation and characterization of exopolymers between floc level and microcolony level, Water Res., 64 (2014) 53–60.
11. C.Y. Wu, R.D. Wang, Y.Z. Peng, Granular Sludge Technology of Wastewater Treatment: Principles and Applications, China Architecture and Building Press, Beijing, China, 2011.
12. C.Y. Wu, Y.Z. Peng, R.D. Wang, Y.X. Zhou, Understanding the granulation process of activated sludge in a biological phosphorus removal sequencing batch reactor, Chemosphere, 86 (2012) 767–773.
13. J. Zhou, L.X. Zhou, H.Z. Huang, Optimization of extracellular polymeric substance extraction method and its role in the dewaterability of sludge, Environ. Sci., 34 (2013) 2752–2757.
14. C.H. Tan, K.S. Kon, C. Xie, M. Tay, Y. Zhou, R. Williams, W.J. Ng, S.A. Rice, S. Kjelleberg, The role of quorum sensing signaling in EPS production and the assembly of a sludge community into aerobic granules, ISME J., 8 (2014) 1186–1197.
15. American Public Health Association (APHA), Standard Methods for the Examination of Water and Wastewater, 20th ed., American Public Health Association, American Water Works Association, Water Environment Federation, Washington, D.C., 1998.
16. L. Eriksson, I. Steen, M. Tendaj, Evaluation of sludge properties at an activated sludge plant, Water Sci. Technol., 25 (2011) 251–265.
17. P. D’Abzac, F. Bordas, E. Van Hullebusch, N.L. Lens Piet, G. Guibaud, Extraction of extracellular polymeric substances (EPS) from anaerobic granular sludges: comparison of chemical and physical extraction protocols, Appl. Microbiol. Biotechnol., 85 (2010) 1589–1599.
18. F. Bo, P. Rikke, K. Kristian, N. Per, Extraction of extracellular polymers from activated sludge using a cation exchange resin, Water Res., 30 (1996) 1749–1758.
19. X. Liu, Y.N. Huang, Y. Liu, R.H. Dai, The comparison of effectiveness of different methods in extracting extracellular polymeric substances from biofilm and activated sludge, J. Fudan Univ., 50 (2011) 556–562.
20. L.D. Zhao, Effects of Temperature and Polyphosphate on Population Abundance and Metabolic Pathway of Accumulibacter, Master’s Thesis, Tianjin Chengjian University, Tianjin, 2018.
21. B.S. Mc Swain, R.L. Irvine, M. Hausner, P.A. Wilderer, Composition and distribution of extracellular polymeric substances in aerobic flocs and granular sludge, Appl. Environ. Microbiol., 71 (2005) 1051–1057.
22. G.R. Wu, Z.R. Chu, H.W. Rong, Characteristic analysis of EPS extracted from activated sludge by different methods, J. Guangzhou Univ. (Natural Science Edition), 16 (2017) 77–83.
23. P.N. Hong, R. Honda, M. Noguchi, Optimum selection of extraction methods of extracellular polymeric substances in activated sludge for effective extraction of the target components, Biochem. Eng. J., 127 (2017) 136–146.
24. B. Mahendran, F. Jared, N. Steven, Protein and polysaccharide content of tightly and loosely bound extracellular polymeric substances and the development of a granular activated sludge floc, Water Res., 82 (2015) 104–117.
25. P. Yang, D.J. Kang, D.Y. Xie, Extraction of extracellular polymeric substances from activated sludge by different combination of methods, Water Purif. Technol., 6 (2016) 88–92.
26. H. Salehizadeh, S.A. Shojaosadati, Extracellular biopolymeric flocculants recent trends and biotechnological importance, Biotechnol. Adv., 19 (2001) 371–385.
27. S.A. Ahmad, N.A. Shamaan, N.M. Arif, G.B. Koon, M.Y.A. Shukor, M.A. Syed, Enhanced phenol degradation by immobilized Acinetobacter sp. strain AQ5NOL1, World J. Microbiol. Biotechnol., 28 (2012) 347–352.
28. F. Martinez, J. Lema, R. Mendez, C.L. Flor, J. Gomez, Role of exopolymeric protein on the settleability of nitrifying sludges, Bioresour. Technol., 94 (2004) 43–48.
29. A.R. Badireddy, S. Chellam, P.L. Gassman, Role of extracellular polymeric substances in bioflocculation of activated sludge microorganisms under glucose-controlled conditions, Water Res., 44 (2010) 4505–4516.
30. X.D. Ruan, L. Li, J.X. Liu, Flocculating characteristic of activated sludge flocs: interaction between Al³⁺ and extracellular polymeric substances, J. Environ. Sci., 25 (2013) 916–924.