skip to main content

Application of Hydrothermal Treatment to High Concentrated Sewage Sludge for Anaerobic Digestion Process

M. Orikawa1, 2 H. Kamahara1, 2Y. Atsuta1, 2H. Daimon1, 2

1Department of Environmental and Life Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, , Japan

2Toyohashi-shi, Aichi, 441-8580, Japan

Published: 30 Oct 2013.

Citation Format:

Tomato and seaweed were produced by utilizing CO2 and heat discharged from power generation using biogas in Toyogawa biomass park, Japan. The biogas was obtained by anaerobic digestion with hydrothermal treatment. The hydrothermal treatment was applied to the high concentrated sewage sludge (22 % total solids (TS) dewatered sludge). The purpose of this study is to clarify the effect of hydrothermal treatment on the qualities of high concentrated sewage sludge, by analyzing particulate organic carbon (POC) and dissolved organic carbon (DOC). The hydrothermal treatment was investigated under 10-60 min of treatment time, 180-200 °C of temperature, 10-22 %-TS of sewage sludge concentration. The results showed that the DOC in each conditions increased through hydrothermal treatment. The highest DOC obtained was 67 % of total carbon concentration, when the temperature was 180 °C, treatment time was 60 min and sewage sludge concentration was 10 %-TS. Furthermore, the viscosity of treated sewage sludge was decreased by hydrothermal treatment. In batch anaerobic digestion test, methane gas production was confirmed. In addition, this study evaluated the energy balance of this system. Thus, the results of this study indicated that the possibility of application of hydrothermal treatment to high concentrated sewage sludge for anaerobic digestion process.


Fulltext View|Download
Keywords: anaerobic reaction; hydrothermal treatment; sewage sludge; solubilization

Article Metrics:

  1. Ministry of the Environment.. Report of present Industrial waste treatment 2011. URL waste/sangyo/sangyo_h-21a.pdf. Accessed on 16 December 2012
  2. Ohmura, T., Ukai, N., Horizoe, K., Sato, J., Ueda, R. & Horizoe, H. (2004) A Study on Hydrothemal Enhancement of Sewage Sludge Anaerobic Digestion. Mitsubishi Heavy Industries Technical Review, 41, 220-223
  3. Hujimoto, S., Yanagida, T., Sakanishi, K., & Minowa, T. (2006) Powderization of sewage sludge by hydrothermal treatment. In Twelfth Fluidization and Particle Processing Symposiumu, 265-269. Tsukuba center, Ibaraki, Japan. : Fluidization and Particle Processing Symposium
  4. Tania, F.C., Ricardo, I., Montserrat, P., Clarita, S., in Ackmez, M. ed. (2013) Biogas Production-Pretreatment Methods in Anaerobic Digestion. Wiley-Scrivener
  5. Wei, Q., Chong, P., Wei, W., ZhongZhi, Z. (2011) Biogas production from supernatant of hydrothermally treated municipal sludge by upflow anaerobic sludge blanket reactor. Bioresource Technology, 102 , 9904-9911
  6. Claire, B., Jean, P.D., Helene, C. (2008) Effets of thermal treatments on five different waste activated sludge samples solubilisation, physical properties and anaerobic digestion. Chemical Engineering Journal, 139, 236-244
  7. Kobayashi, S., Nomura, S., Hujimura, Y., Tsuboi, H., Kimoto, K., Itaya, Y. (2011) Effects of hydrothermal treatment on sewage sludge treatment residues characteristics. Kagaku Kogaku Ronbunsyu, 37, 460-467
  8. Mitsubishi Nagasaki Mashinery MFG. CO., LTD. (October 2012). URL Accessed on 12 December 2012

Last update:

No citation recorded.

Last update:

No citation recorded.