Influence of the Stage Number on the Quality of Domestic Waste Water Treated with Typha domingensis Filter Plants
Hontonho Esperance Justine Deguenon *
Environment and Water Sciences Laboratory from National Water Institute, Abomey-Calavi University, Abomey-Calavi, Bénin, Laboratory of Technology Process and Innovation, National Superior Institute of Industrial Technology, National University of Sciences, Technologies, Engineering and Mathematics, Abomey, Benin and Laboratory for Studies and Research in Chemistry and Applications, Abomey-Calavi University, Abomey-Calavi, Bénin.
Nonviho Guevara
Laboratory of Pluridisciplinary Researches of Technical Teaching, Normal High School of Technical Teaching of Lokossa, National University of Sciences, Technologies, Engineering and Mathematics, Abomey, Benin.
Lyde Arsene Sewedo Tometin
Kaba Laboratory for Research in Chemistry and Applications, Ecole Normale Supérieure de Natitingou, National University of Sciences, Technologies, Engineering and Mathematics, Abomey, Benin.
M. Solange Guehou
Environment and Water Sciences Laboratory from National Water Institute, Abomey-Calavi University, Abomey-Calavi, Bénin.
Martin Pépin Aina
Environment and Water Sciences Laboratory from National Water Institute, Abomey-Calavi University, Abomey-Calavi, Bénin.
C. K. Dominique Sohounhloue
Laboratory for Studies and Research in Chemistry and Applications, Abomey-Calavi University, Abomey-Calavi, Bénin.
*Author to whom correspondence should be addressed.
Abstract
To achieve “good ecological status for water and aquatic environments”, extensive treatment techniques have been developed. The goal of this work is to study the two stages efficiency of filters planted with Typha domingensis. Two tanks in series of filters planted with reeds were used. Each tank consists of a tank of 1m3 in volume fitted with drainage pipes pierced with holes. Three different layers of gravel were laid over the drain pipes. From the comparison of the characterization of raw domestic wastewater and treated water, it appears that the reductions obtained at the outlet of the 2nd floor are more satisfactory than at the outlet of the 1st floor. The reductions at the exit of the 2nd floor are: 91.7% for total suspended solids; 98.3% for COD; 94.7% for BOD5; 79.9% for NTK and 49.8% for Pt.
Keywords: Planted filters, Typha domingensis, stage, domestic waste water