[ CARACTÉRISATION PHYSICO-CHIMIQUE DES EAUX USÉES D'ABATTOIR EN VUE DE LA MISE EN ŒUVRE D'UN TRAITEMENT ADÉQUAT : CAS DE « ELAKAT » BUKAVU RD CONGO ]
Volume 12, Issue 2, December 2014, Pages 491–498
Dieudonné BISIMWA KAYEYE1
1 Département de Biologie-Chimie, Institut Supérieur Pédagogique d'Idjwi (ISP/IDJWI), Idjwi, Sud-Kivu, RD Congo
Original language: French
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The goal of our study is to characterize the effluent of the municipal slaughter-houseof the Bukavu city and to recommend a suitable treatment, thus reducing the harmful effect which undergoes the receiving environment (Ruzizi River) and to also mitigate the loss of this hydrous resource in recoverable matter. The physicochemical characterization of raw wastewaterrevealed that this liquid rejection is very charged of organic matter expressed in termsof COD (Avg.= 219.52 mg/L), in BDO5(Avg.= 181.34 mg/L), in Suspend Matter (Avg.= 482 mg/L) and mineral matter expressed in terms of Chlorides (Avg.= 237 mg/L), Electric Conductivity (Avg.= 1360.5 μs/cm) and Alkalinity expressed in CaCO3(Avg.= 201 mg/KL) with a pH of 7.5. The average content of Nitrates isabout 1.74 mg/L. Although this wastewater presents a high organic load (BDO5/COD report = 0.83 and SM/BDO5= 2.66), it has a satisfactory bio deterioration. The COD/BDO5 report examination = 1.21 underlines well the biodegradable character of mixed wastewater of the Bukavu city municipal slaughterhouse to which, a biological treatment appears completely suitable.
Author Keywords: Slaughter-house wastewaters, characterization, treatment.
Volume 12, Issue 2, December 2014, Pages 491–498
Dieudonné BISIMWA KAYEYE1
1 Département de Biologie-Chimie, Institut Supérieur Pédagogique d'Idjwi (ISP/IDJWI), Idjwi, Sud-Kivu, RD Congo
Original language: French
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The goal of our study is to characterize the effluent of the municipal slaughter-houseof the Bukavu city and to recommend a suitable treatment, thus reducing the harmful effect which undergoes the receiving environment (Ruzizi River) and to also mitigate the loss of this hydrous resource in recoverable matter. The physicochemical characterization of raw wastewaterrevealed that this liquid rejection is very charged of organic matter expressed in termsof COD (Avg.= 219.52 mg/L), in BDO5(Avg.= 181.34 mg/L), in Suspend Matter (Avg.= 482 mg/L) and mineral matter expressed in terms of Chlorides (Avg.= 237 mg/L), Electric Conductivity (Avg.= 1360.5 μs/cm) and Alkalinity expressed in CaCO3(Avg.= 201 mg/KL) with a pH of 7.5. The average content of Nitrates isabout 1.74 mg/L. Although this wastewater presents a high organic load (BDO5/COD report = 0.83 and SM/BDO5= 2.66), it has a satisfactory bio deterioration. The COD/BDO5 report examination = 1.21 underlines well the biodegradable character of mixed wastewater of the Bukavu city municipal slaughterhouse to which, a biological treatment appears completely suitable.
Author Keywords: Slaughter-house wastewaters, characterization, treatment.
Abstract: (french)
Notre objectif principal est de caractériser les eaux usées d'abattoir municipal de la ville de Bukavu (RD Congo) et de recommander un traitement adéquat, réduisant ainsi les nuisances que subit le milieu récepteur (Rivière Ruzizi) et de remédier aussi à la perte de cette source hydrique en matières valorisables. La caractérisation physico-chimique des eaux usées brutes a révélé que ce rejet liquide est très chargé en matière organique en termes de DCO (Moy. = 219,52 mg/L), en DBO5 (Moy. = 181,34 mg/L), en MES (Moy. = 482 Afrique SCIENCE 05(2) (2009) 153 – 216 200 mg/L) et en matière minérale exprimée en terme de Chlorures (Moy. = 237 mg/L), en Conductivité électrique (Moy. = 1360,5 μs/cm) et en Alcalinité exprimée en CaCO3 (Moy. = 201 mg/L) avec un pH de 7,5. La teneur moyenne en Nitrates est de l'ordre de 1,74 mg/L. Malgré que ces eaux usées présentent une charge organique élevée (rapports DBO5/DCO = 0,83 et MES/DBO5 = 2,66), elles présentent une biodégradabilité satisfaisante. L'examen de rapport DCO/DBO5 = 1,21 souligne bien le caractère biodégradable des eaux usées de l'abattoir municipal ELAKAT auxquelles un traitement biologique paraît tout à fait convenable.
Author Keywords: eaux usées, abattoir, paramètres physico-chimiques, traitement.
How to Cite this Article
Dieudonné BISIMWA KAYEYE, “PHYSICO-CHEMICAL CHARACTERIZATION OF SLAUGHTERHOUSE WASTEWATER FOR A SUITABLE TREATMENT: CASE STUDY OF « ELAKAT » BUKAVU D.R.C,” International Journal of Innovation and Scientific Research, vol. 12, no. 2, pp. 491–498, December 2014.
