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COMPARATIVE PERFORMANCE OF SAND AND COCONUT SUBSTRATE IN URBAN WASTEWATER TREATMENT
PERFORMANCES COMPAREES DU SABLE ET DU SUBSTRAT DE COCO EN TRAITEMENT D’EAUX RESIDUAIRES URBAINES


MARTINE KONE 1*, GILLES COMTES 2, MADJELIA SOME 1, INOUSSA ZONGO 1, PIERRE JOLY 2
1. Centre National de la Recherche Scientifique et Technologique (CNRST), 03 BP 7047 Ouagadougou 03, Burkina Faso
2. Université Claude Bernard Lyon 1, 43, Boulevard du 11 nov. 1918, 69622 Villeurbanne, France
*Corresponding author: koneba2003@yahoo.fr

Issue:

SCSCC6, Volume XVI, No. 1

Section:

Volume XVI, No. 1 (2015)

Abstract:

Urban wastewater has been treated by infiltration-percolation on sand and on coconut substrate, in order to highlight their comparative performance. The pilots were fed to the hydraulic loading rate of 40 L·m-2·d-1 during three days a week and kept at rest the next four days. Parameters are measured on an average sample of 24 hours taken on the output of each pilot at the end of the third day of treatment. The average removal efficiencies of chemical oxygen demand (COD) were respectively, 94.8 and 39.61 % with the sand and the coconut substrate while the average yields of biochemical oxygen demand (BOD5) were 99.01 and 98.12 %. The results showed that the average removal efficiencies of fecal coliform bacteria were respectively, 98.8 and 91 %. Conductivities have increased by an average of 39.88 % with the sand and 4.65 % with coconut substrate.

Keywords:

coconut substrate, conductivity, DBO5, sand, treatment, urban wastewater.

Code [ID]:

CSCC6201501V01S01A0001 [0004199]

Full paper:

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