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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 2317-2329
DOI: https://doi.org/10.20546/ijcmas.2018.707.270


Effect of Slanted Soil Design and Filter Media Distribution on the Removal of Fecal Bacteria and Organic Matter from Greywater
Ynoussa Maiga1, Awa Ndiaye2, Drissa Sangaré3, Emeline Bitié4 and Ken Ushijima5
1University Ouaga 1 Pr Joseph KI-ZERBO, Laboratory of  Microbiology and Microbial Biotechnology, 03 BP 7021 Ouagadougou 03, Ouagadougou, Burkina Faso
2Biological Sciences, Peleforo Gon Coulibaly University, BP 1328 Korhogo, Côte d’Ivoire
3University of Man, BP 20 Man, Côte d’Ivoire
4International Institute for Water and Environmental Engineering, 01 BP 594 Ouagadougou 01, Ouagadougou Burkina Faso
5Environmental Engineering and Science, Hokkaido University, kita13-nishi 8, Kita-ku, Sapporo-shi, Hokkaido 060–8628, Japan
*Corresponding author
Abstract:

Slanted Soil Treatment System (SSTS) was previously designed for onsite greywater treatment. In this study, several configurations were tested with granitic gravel in order to improve its efficiency. The lowest average removal efficiencies for fecal coliforms, enterococci and E. coli were 1.78, 2.15 and 2.21 log u. respectively and originated from case 3 (length 3 m, width 20 cm, grain size in second box 1-4 mm). The highest removal efficiencies originated from case 1 (length 5 m, width 20 cm, grain size in second box 1-2 mm) with values of 2.66, 2.56 and 2.51 log u. for fecal coliforms, enterococci and E. coli respectively. The average removal of suspended solids varied from 62% (case 3) to 92% (case 1). The comparison of the performances highlighted that the removal of indicator bacteria was more affected by the variations in the characteristics of the SSTS than that of organic matter. Based on these results, a SSTS with a length of 5 m, a width of 30 cm and a grain size of 1-4 mm (to avoid early clogging) is suggested in order to enhance the removal of indicator bacteria. However, for organic matter, further studies are necessary to improve the removal efficiency.


Keywords: Granit, Greywater, Indicator bacteria, Slanted soil system
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How to cite this article:

Ynoussa Maiga, Awa Ndiaye, Drissa Sangaré, Emeline Bitié and Ken Ushijima. 2018. Effect of Slanted Soil Design and Filter Media Distribution on the Removal of Fecal Bacteria and Organic Matter From GreywaterInt.J.Curr.Microbiol.App.Sci. 7(7): 2317-2329. doi: https://doi.org/10.20546/ijcmas.2018.707.270