Slanted Soil System

  • Ken UshijimaEmail author
  • Ryusei Ito
  • Nowaki Hijikata
  • Ynoussa Maïga
  • Naoyuki Funamizu


Slanted soil system is low cost, simple system suitable for greywater treatment. Performance of the slanted soil system for greywater was evaluated in light of required water quality for irrigation reuse. Removal rate of COD and BDOC, those may cause clogging of irrigation facility, was 52–83% and 88–89%, respectively. LAS, one of the major surfactants, was removed more than 80%. Phytotoxic test showed that more than 2.82 m treatment is required. Only fine soil (1–4 mm) performed 5 log10 and 3 log10 reductions of Escherichia coli and MS2 phage, while coarse soil could not remove those pathogens. Clogging was observed in fine soil after 3–5 weeks operation; however, combination of coarse soil chamber and fine soil chamber could extend it to 8 weeks, without decrease of treatment performance. Reductions of total COD and LAS were described by first-order reaction model, and reaction coefficient k was described by equation of per area discharged rate.


Decentralized system Water reuse Irrigation Arid zone 


  1. Adams MH (1959) Bacteriophages. Interscience Publishers, New YorkGoogle Scholar
  2. Apha (1985) Standard Method for the Environment of water and wastewater, 16th edn. American Public Health Association, Washington, D.CGoogle Scholar
  3. Funamizu N, Mizukubo T, Lopez Zavala MA, Takakuwa T (2002) Fractioning gray-water in the differentiable onsite-wastewater treatment system. In: Proceedings of XXVIII Congreso Interamericano de Ingenieria Sanitariay Ambiental, Cancun, MexicoGoogle Scholar
  4. Gajurel DR, Li Z, Otterpohl R (2003) Investigation of the effectiveness of source control sanitation concepts including pre-treatment with Rottebehaelter. Wat Sci Tech 41:111–118CrossRefGoogle Scholar
  5. Hijikata N, Nakaoka E, Sawadogo B, Ushijiam K., Funamizu N (2011) Phytotoxicity assay of several gray waters for reuse as agricultural irrigation. In: Proceedings of the IWA international conference Cities of the Future Xi’an. Xi’an, China (CD-ROM)Google Scholar
  6. Huelgas AP (2009) Onsite Treatment of Higher-load Graywater by Membrane Bioreactor. Dissertation for the Doctoral Degree Hokkaido University SapporoGoogle Scholar
  7. Itayama T, Kiji M, Suetugu A, Tanaka N, Saito T, Iwami N, Mizuochi M, Inamori Y (2006) On site experiments of the slanted soil treatment systems for domestic gray water. Wat Sci Tech 53(9):193–201. Scholar
  8. Kondo T, Ebie Y, Kiji M, Sugiura N, Xu K, Inamori Y (2011) Decentralized domestic gray water treatment by using slanted soil chamber system. Sustain Environ Res 21:81–87Google Scholar
  9. Li F, Wichmann K, Otterpohl R (2009) Review of the technological approaches for grey water treatment and reuses. Sci Total Environ 407(11):3439–3449. Scholar
  10. Niquette P, Servais P, Savoir P (2001) Bacterial dynamics in the drinking water distribution system of brussels. Water Res 35:675–682. Scholar
  11. Otaki M (2007) Water use in Thailand. J Human Env Eng 9:124–127 (in Japanese)Google Scholar
  12. Ottoson J, Stenström TA (2003) Faecal contamination of greywater and associated microbial risks. Water Res 37(3):645–655. Scholar
  13. Servais P, Laurent P, Randon G (1995) Comparison of the bacterial dynamics in various French distribution systems. Aqua 44:10–17Google Scholar
  14. Tada C, Itayama T, Iwami N, Kuwabara T, Tanaka N, Ebie Y, Inamori Y, Ushijima K, Moritani A (2007) Characteristics of kitchen wastewater treatment by slanted soil treatment system using various soils. In: Proceedings of the 5th international symposium on sustainable sanitation Tokyo Japan, pp 101–107Google Scholar
  15. Ushijima K, Irie M, Sintawardani N, Triastuti J, Ishikawa T (2008) Field research on domestic wastewater from a slum in Bandung City. J Hydrosci Hydraul Eng 26:129–140Google Scholar
  16. Ushijima K, Hijikata N, Ito R, Funamizu N (2012) Effect estimation of Dry-Toilet application for rural farmer family in Burkina Faso. J Arid Land Study 22(1):99–102Google Scholar
  17. Ushijima K, Tanaka E, Hijikata N, Ito R, Funamizu N (2013a) Grey water treatment by slanted soil system considering practical condition in Sahel Africa. J Jap Soc Civ Eng, Ser G 69(7):III-83-III-89CrossRefGoogle Scholar
  18. Ushijima K, Ito K, Ito R, Funamizu N (2013b) Greywater treatment by slanted soil system. Ecol Eng 50:62–68. Scholar
  19. Ushijima K, Tanaka E, Hijikata N, Ito R, Funamizu N, Maïga Y, Moyenga D, Maïga AH (2013c) Design of grey water treatment system for agricultural reuse. In: Proceedings of 7ème édition Journées scientifiques de 2iE, 1st–5th April 2013, Ouagadougou, Burkina FasoGoogle Scholar
  20. World Health Organization (2006) WHO guidelines for the safe use of wastewater, excreta and greywater wastewater use in agriculture, vol 2. WHO publication, GenevaGoogle Scholar
  21. Zucconi F, Forte M, Monac A, De Bertoldi M (1981) Biological evaluation of compost maturity. Biocycle 22:27–29Google Scholar

Copyright information

© Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  • Ken Ushijima
    • 1
    Email author
  • Ryusei Ito
    • 2
  • Nowaki Hijikata
    • 2
  • Ynoussa Maïga
    • 3
  • Naoyuki Funamizu
    • 4
    • 5
  1. 1.Northern Regional Building Research Institute, Hokkaido Research Organization (HRO)AsahikawaJapan
  2. 2.Graduate School of EngineeringHokkaido UniversitySapporo CityJapan
  3. 3.International Institute for Water and Environmental Engineering (2iE)OuagadougouBurkina Faso
  4. 4.Graduate School of Global Food ResourcesHokkaido UniversitySapporoJapan
  5. 5.Research Institute of Humanity and Nature. Motoyama KamigamoKyotoJapan

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