Enhanced Biogas Production and Dewaterability from Sewage Sludge with Alkaline Pretreatment at Mesophilic and Thermophilic Temperatures

  • Tianfeng Wang
  • Bingqing Xu
  • Xinyun Zhang
  • Qiyong Yang
  • Bingjie Xu
  • Pinghua Yang
Article
  • 93 Downloads

Abstract

This study investigated the biogas production and dewaterability of sewage sludge with alkaline pretreatment at mesophilic and thermophilic temperatures. The total suspended solids (TSS) and volatile suspended solids (VSS) of raw sludges were 21.1 ± 2.3 and 16.2 ± 1.5 g L−1, respectively. Raw sludges were pretreated at uncontrolled, pH 8, pH 10, and pH 12 under mesophilic (Mu, M8, M10, and M12) and thermophilic (Tu, T8, T10, and T12) conditions, respectively. All the pretreatments last 6 days. The pH of pretreated sludges was adjusted to the pH 7.0 prior to inoculating with mesophilic anaerobic digested sludge and undergoing 60 days of anaerobic digestion. The ultimate biogas yield of Mu, M8, M10, M12, Tu, T8, T10, and T12 was 296.8, 384.8, 339.9, 323.1, 376.6, 322.4, 271.5, and 258.1 mL g−1-VSadded, respectively. Both the pH of alkali treatment and temperature of thermal treatment affect the performance of anaerobic digestion. High hydrolysis pH (pH 10 and pH 12) resulted in high Na+ concentration (over 4000 mg L−1), and Na+ inhibitory effect reduced the ultimate biogas yield. The normalized capillary suction time (NCST) found in the treatments of M8 and Tu were 11.8 ± 1.1 to 23.4 ± 1.7 and 27.9 ± 5.4 to 111.8 ± 1.7 s g−1-TSS, respectively. The results suggest that both the pH of alkali treatment and temperatures of mild thermal treatment affect the performance of anaerobic digestion and sludge pretreated at pH 8.0 under mesophilic conditions could achieve high biogas yield and adequate dewaterability of digested sludge.

Keywords

Hydrolysis Biogas yield Extracellular polymeric substances (EPS) Dewaterability Pretreatment 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (51741805, 21767013 and 21567011), State Key Laboratory of Pollution Control and Resource Reuse Foundation (PCRRF16025), and Science and Technology Foundation of Education Department of Jiangxi Province (GJJ161085).

Supplementary material

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Fig. A1 Variation of protein of slime over digestion time (JPEG 3737 kb)
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Fig. A2 Variation of polysaccharide of slime over digestion time (JPEG 3658 kb)
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Fig. A3 Variation of protein of LB-EPS over digestion time (JPEG 3516 kb)
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Fig. A4 Variation of polysaccharide of LB-EPS over digestion time (JPEG 3480 kb)
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Fig. A5 Variation of protein of TB-EPS over digestion time (JPEG 3570 kb)
11270_2018_3726_MOESM6_ESM.jpg (3.5 mb)
Fig. A6 Variation of polysaccharide of TB-EPS over digestion time (JPEG 3551 kb)

References

  1. An, D., Wang, T., Zhou, Q., Wang, C., Yang, Q., Xu, B., & Zhang, Q. (2017). Effects of total solids content on performance of sludge mesophilic anaerobic digestion and dewaterability of digested sludge. Waste Management, 62, 188–193.CrossRefGoogle Scholar
  2. APHA. (1998). Standard methods for the examination of water and wastewater (20th ed.). Washington DC: American Public Health Association, American Water Works Association, Water Environmental Federation.Google Scholar
  3. Appels, L., Baeyens, J., Degre, J., & Dewil, R. (2008). Principles and potential of the anaerobic digestion of waste-activated sludge. Progress in Energy and Combustion Science, 34, 755–781.CrossRefGoogle Scholar
  4. Climent, M., Ferrer, I., Baeza, M. D. M., Artola, A., Vázquez, F., & Font, X. (2007). Effects of thermal and mechanical pretreatments of secondary sludge on biogas production under thermophilic conditions. Chemical Engineering Journal, 133(1–3), 335–342.CrossRefGoogle Scholar
  5. Dai, X., Li, X., Zhang, D., Chen, Y., & Dai, L. (2016). Simultaneous enhancement of methane production and methane content in biogas from waste activated sludge and perennial ryegrass anaerobic co-digestion: the effects of pH and C/N ratio. Bioresource Technology, 216, 323–330.CrossRefGoogle Scholar
  6. Dong, J., Chi, Y., Tang, Y., Wang, F., & Huang, Q. (2014). Combined life cycle environmental and exergetic assessment of four typical sewage sludge treatment techniques in China. Energ & Fuel, 28, 2114–2122.CrossRefGoogle Scholar
  7. Gaudy A. (1962) Colorimetric determination of protein and carbohydrate. Industrial Water Wastes, 7, 17–22. Google Scholar
  8. He, X., Xi, B., Wei, Z., Jiang, Y., Geng, C., Yang, Y., Yuan, Y., & Liu, H. (2011). Physicochemical and spectroscopic characteristics of dissolved organic matter extracted from municipal solid waste (MSW) and their influence on the landfill biological stability. Bioresource Technology, 102(3), 2322–2327.CrossRefGoogle Scholar
  9. Hii, K., Baroutian, S., Parthasarathy, R., Gapes, D. J., & Eshtiaghi, N. (2014). A review of wet air oxidation and thermal hydrolysis technologies in sludge treatment. Bioresource Technology, 155, 289–299.CrossRefGoogle Scholar
  10. Huang, X., Shen, C., Liu, J., & Lu, L. (2015). Improved volatile fatty acid production during waste activated sludge anaerobic fermentation by different bio-surfactants. Chemical Engineering Journal, 264, 280–290.CrossRefGoogle Scholar
  11. Kim, J., Yu, Y., & Lee, C. (2013). Thermo-alkaline pretreatment of waste activated sludge at low-temperatures: effects on sludge disintegration, methane production, and methanogen community structure. Bioresource Technology, 144, 194–201.CrossRefGoogle Scholar
  12. Liu, X., Dong, B., & Dai, X. (2013). Hydrolysis and acidification of dewatered sludge under mesophilic, thermophilic and extreme thermophilic conditions: effect of pH. Bioresource Technology, 148, 461–466.CrossRefGoogle Scholar
  13. Liu, Y., & Fang, H. H. P. (2003). Influences of extracellular polymeric substances (EPS) on flocculation, settling, and dewatering of activated sludge. Critical Reviews in Environmental Science and Technology, 33(3), 237–273.CrossRefGoogle Scholar
  14. Markwell, M. A. K., Haas, S. M., Bieber, L. L., & Tolbert, N. E. (1978). A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples. Analytical Biochemistry, 87(1), 206–210.CrossRefGoogle Scholar
  15. Maynaud, G., Druilhe, C., Daumoin, M., Jimenez, J., Patureau, D., Torrijos, M., Pourcher, A., & Wéry, N. (2017). Characterisation of the biodegradability of post-treated digestates via the chemical accessibility and complexity of organic matter. Bioresource Technology, 231, 65–74.CrossRefGoogle Scholar
  16. Nielsen, P. H., Frolund, B., & Keiding, K. (1996). Changes in the composition of extracellular polymeric substances in activated sludge during anaerobic storage. Applied Microbiology and Biotechnology, 44(6), 823–830.Google Scholar
  17. Pei, J., Yao, H., Wang, H., Ren, J., & Yu, X. (2016). Comparison of ozone and thermal hydrolysis combined with anaerobic digestion for municipal and pharmaceutical waste sludge with tetracycline resistance genes. Water Research, 99, 122–128.CrossRefGoogle Scholar
  18. Serrano, A., Siles, J. A., Martín, M. A., Chica, A. F., Estévez-Pastor, F. S., & Toro-Baptista, E. (2016). Improvement of anaerobic digestion of sewage sludge through microwave pre-treatment. Journal of Environmental Management, 177, 231–239.CrossRefGoogle Scholar
  19. Shao, L., Wang, T., Li, T., Lü, F., & He, P. (2013). Comparison of sludge digestion under aerobic and anaerobic conditions with a focus on the degradation of proteins at mesophilic temperature. Bioresource Technology, 140, 131–137.CrossRefGoogle Scholar
  20. Shao, L., Wang, X., Xu, H., & He, P. (2012). Enhanced anaerobic digestion and sludge dewaterability by alkaline pretreatment and its mechanism. Journal of Environmental Sciences-China, 24(10), 1731–1738.CrossRefGoogle Scholar
  21. Shehu, M. S., Abdul Manan, Z., & Wan Alwi, S. R. (2012). Optimization of thermo-alkaline disintegration of sewage sludge for enhanced biogas yield. Bioresource Technology, 114, 69–74.CrossRefGoogle Scholar
  22. Sheng, G., Yu, H., & Li, X. (2010). Extracellular polymeric substances (EPS) of microbial aggregates in biological wastewater treatment systems: a review. Biotechnology Advances, 28(6), 882–894.CrossRefGoogle Scholar
  23. Sung, S., & Liu, T. (2003). Ammonia inhibition on thermophilic anaerobic digestion. Chemosphere, 53(1), 43–52.CrossRefGoogle Scholar
  24. Veeken, A., Nierop, K., Wilde, V. D., & Hamelers, B. (2000). Characterisation of NaOH-extracted humic acids during composting of a biowaste. Bioresource Technology, 72(1), 33–41.CrossRefGoogle Scholar
  25. Wang, T., Chen, J., Shen, H., & An, D. (2016). Effects of total solids content on waste activated sludge thermophilic anaerobic digestion and its sludge dewaterability. Bioresource Technology, 217, 265–270.CrossRefGoogle Scholar
  26. Xiao, B., Liu, C., Liu, J., & Guo, X. (2015). Evaluation of the microbial cell structure damages in alkaline pretreatment of waste activated sludge. Bioresource Technology, 196, 109–115.CrossRefGoogle Scholar
  27. Xue, Y., Liu, H., Chen, S., Dichtl, N., Dai, X., & Li, N. (2015). Effects of thermal hydrolysis on organic matter solubilization and anaerobic digestion of high solid sludge. Chemical Engineering Journal, 264, 174–180.Google Scholar
  28. Yang, C., Liu, W., He, Z., Thangavel, S., Wang, L., Zhou, A., & Wang, A. (2015). Freezing/thawing pretreatment coupled with biological process of thermophilic Geobacillus sp. G1: acceleration on waste activated sludge hydrolysis and acidification. Bioresource Technology, 175, 509–516.CrossRefGoogle Scholar
  29. Yang, Z., Du, M., & Jiang, J. (2016). Reducing capacities and redox potentials of humic substances extracted from sewage sludge. Chemosphere, 144, 902–908.CrossRefGoogle Scholar
  30. Yuan H, Chen Y, Dai X, & Zhu N (2016) Kinetics and microbial community analysis of sludge anaerobic digestion based on micro-direct current treatment under different initial pH values. Energy, 116(1), 677–686.Google Scholar
  31. Zhang, J., Lü, F., Shao, L., & He, P. (2014). The use of biochar-amended composting to improve the humification and degradation of sewage sludge. Bioresource Technology, 168, 252–258.CrossRefGoogle Scholar
  32. Zhang, Y., Li, H., Cheng, Y., & Liu, C. (2016). Influence of solids concentration on diffusion behavior in sewage sludge and its digestate. Chemical Engineering Science, 152, 674–677.CrossRefGoogle Scholar
  33. Zhao, J., Wang, D., Li, X., Yang, Q., Chen, H., Zhong, Y., & Zeng, G. (2015). Free nitrous acid serving as a pretreatment method for alkaline fermentation to enhance short-chain fatty acid production from waste activated sludge. Water Research, 78, 111–120.CrossRefGoogle Scholar
  34. Zhou, C., Huang, X., Jin, Y., & Li, G. (2016). Numerical and experimental evaluation of continuous ultrasonic sludge treatment system. Ultrasonics, 71, 143–151.CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Tianfeng Wang
    • 1
    • 2
    • 3
  • Bingqing Xu
    • 1
  • Xinyun Zhang
    • 4
  • Qiyong Yang
    • 1
  • Bingjie Xu
    • 1
  • Pinghua Yang
    • 1
  1. 1.School of Chemistry and Environmental EngineeringJiujiang UniversityJiujiangPeople’s Republic of China
  2. 2.Jiangxi Province Engineering Research Center of Ecological Chemical IndustryJiujiangPeople’s Republic of China
  3. 3.Jiujiang Key Laboratory of Basin Management and Ecological ProtectionJiujiangPeople’s Republic of China
  4. 4.Art InstituteJiujiang UniversityJiujiangPeople’s Republic of China

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