Management and recovery of effluent from the drinking water production industry into agricultural fertilizer: case of REGIDESO -Ndjili in Kinshasa
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Abstract
The valorization of effluents from the drinking water production industry of N'djili into agricultural fertilizer was carried out,
the potential fertilizing power of these effluents was evaluated on the cultivation of amarantus hybridus.L; with the objectives
of contributing to its management and valorization. To achieve these objectives, recycling of effluents was carried out by
flocculation based on prickly pear cladode, followed by soil fertilization tests with the fertilizer produced from sewage sludge,
and cultural tests were carried out following a completely randomized Latin square design.
Physico-chemical analyzes and major fertilizing elements were carried out at the Regideso central laboratory, and the cultural
trials at the experimental Biology garden of the University of Kinshasa.
The results of these studies show us that the fertilizer produced from settling sludge (Treatment T3) and the Treatment having
benefited from the addition of chemical fertilizer (Treatment T2) gave similar results when added to witnesses, having benefited
from the provision of tap water from Regideso,2(Treatment To). The veracity of the result was approved by the statistical test
of analysis of variance at the 5% threshold. Based on these results, the fertilizer produced from the treatment of sedimentation
sludge can be used as an agricultural amendment in market gardening. Hence the effluent produced at the N’djili industrial
complex can be used as agricultural fertilizer.
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References
Jean R., Bernard, L.,& Merlet, N. (2016), L’Analyse de
l’eau ; Contrôle et Interprétation, Ed. Dunod,
ème édition, 1806, Paris France.
Makoko, M.(2001),Les sols du Mont-Amba :
caractérisation pédologique, mécanique et stock
en eau. Revues Zaïrois des sciences nucléaires,
(1991), 72-94.
Ndembo, L., & Nsimba, M., (1991), Les sols du Mont-
Amba : caractérisation pédologique, mécanique et
stock en eau. Revues Zaïrois des sciences
nucléaires, 12(1991), 72-94.
Musibono, E.A.D., (1987), Valorisation des drèches de
brasserie en aquaculture à la prairie, Notre-
Dame de l’Assomption, une valorisation de
déchets industriels,[Mémoire, D.E.S,
Environnement, Kinshasa UNIKIN].
Mutombo, M.G.(2010), Aperçu technologique sur
l’horticulture urbaine et périurbaine de la RDC,
cas de la ville de Lubumbashi. Service national
d’appuis au développement de l’horticulture
urbaine et périurbaine, 87p, RDC.
Ngadi R., Mulaji C., Mukendi C., Idrissa A, Kindela
J.F. & Mukwa L., (2023), Caractérisation
physico-chimique et agronomique des boues de
potabilisation d’eau des usines de Kinshasa,
RDC .Afrique Science, 23(3), 25 - 41
OMS. (2016), Directives de qualité pour l’eau de
boisson, 2è Edition Recommandations, Genève.
ONU-EAU.(2017), Les eaux usées : une ressource
inexploitée, Rapport mondial des Nations Unies
sur la mise en valeur des ressources en eau,
Organisation des Nations Unies pour l’éducation,
la science et la culture 7, place de Fontenoy.Paris.
Tangou, T.T., (2018), Technologies de l’eau et des
eaux usées. Éditions Presses Universitaires de
Kinshasa, Unikin.