Authors :
Mudinga Mudinga Daniel; Katalayi Mutombo Hilaire; Sambu Lilu Esther; Nienie Buabitulu Alexis; Ngandote Mutemusa Archal
Volume/Issue :
Volume 9 - 2024, Issue 12 - December
Google Scholar :
https://tinyurl.com/492sn8ac
Scribd :
https://tinyurl.com/3777rsk4
DOI :
https://doi.org/10.5281/zenodo.14613890
Abstract :
The objective of this study is to assess the risks
linked to the discharge of industrial effluents from SOCIR
into the Congo River. Several physicochemical
parameters were taken into account in order to
characterize these effluents. The results show that the
temperature remained within the standard range, above
all as after treatment of the effluents either: 26.6°C for E1
before treatment and 25.8°C for E2 after treatment.
The pH remained neutral, above all as after
treatment with values tending slightly towards acidity
before treatment either, 6.1 for E1 and slightly towards
basicity after treatment, i.e. 6.8 for E2. The solid matter
(sediment) content in the effluent remains relatively low,
a little low before treatment, 0.9 for E1, and very low after
treatment, 0.1 for E2. Our samples have a low
hydrocarbon content for E1 and a total absence of
hydrocarbon after treatment for E2.
The chemical oxygen demand presents values lower
than the maximum provided for by the standard, i.e. 68.0
for E1 and 26.0 for E2 at the outlet. As for the biochemical
oxygen demand, this has a high value at the inlet,
moderately higher than the standard which requires an
almost zero value (tending to zero) for any effluent
deemed potable, but this is 33.0 for E1 before treatment
and decreases considerably after treatment for E2, i.e.
12.0. Thus, the DCO/DBO ratio of our samples gives
values less than 3 before, as well as after treatment; either
for E1: 2 < 3; and E2: 2.1< 3, hence referring to the
classification according to the aptitude for biodegradation
by Rodier (2009), we conclude that SOCIR effluents after
treatment remain easily biodegradable and comply with
the API standards in force in the company and therefore
present a low risk of contamination after discharge into
the Congo River. Despite these results, a series of
recommendations was made to the company and the
Congolese State.
Keywords :
Assessment, Process, Management, Production, Effluent.
References :
- Alexis N et al (2007), Seasonal variability of water quality by physicochemical indexes and traceable metal in suburban area in Kikwit city, Democratic Republic of the Congo, International soil and water conservation Research 5(2): 85-96.
- Rodier (2009), Water Analysis. Natural Water, Sea Water (9th ed, pp 100-110). Paris Dunod.
- Vilagines R (2010), Water, environment and public health 3rd edition TEC& DOC lavasier paris 217p.
- Charles et al (2011), Treatment and purification of polluted industrial water, university press of franche - comté France P145.
- Mudinga MD (2023), Physicochemical and bacteriological characterization of water and sediments from the Dimba Cave in Mbanza-Ngungu in the DR Congo, DEA thesis, UPN.
- Mudinga MD et al (2024), Physicochemical evaluation of the quality of sewage sludge from the Lukaya water treatment plant in Mont-Ngafula in the DR Congo, article, Journal of Ecology and Natural Resources, 7p.
- Mudinga MD et al (2024), Ecotoxicological and Microbiological Risk Assessment of Groundwater from Dimba Cave, Democratic Republic of the Congo, International Journal of Environmental Research and Public Health, 17p.
- Ngandote MA et al (2024), Impacts of leachates from the Mpasa charge on the surrounding waters of the Ndamaba district in the commune of N’sele in the DR Congo, article, journal of Ecology and Natural Resources, 11p.
- Traore R (2012) Water, territory and conflicts: analysis of the issues of community water management in Burkina Faso: the example of the Nakambé watershed, PhD thesis in sociology, University of Toulouse le Mirail, 370p.
- Pote J et al (2009), Extracellular plant DNA in Geneva groundwater and traditional artesian drinking water fountains. Chemosphere, 75, 498-504
The objective of this study is to assess the risks
linked to the discharge of industrial effluents from SOCIR
into the Congo River. Several physicochemical
parameters were taken into account in order to
characterize these effluents. The results show that the
temperature remained within the standard range, above
all as after treatment of the effluents either: 26.6°C for E1
before treatment and 25.8°C for E2 after treatment.
The pH remained neutral, above all as after
treatment with values tending slightly towards acidity
before treatment either, 6.1 for E1 and slightly towards
basicity after treatment, i.e. 6.8 for E2. The solid matter
(sediment) content in the effluent remains relatively low,
a little low before treatment, 0.9 for E1, and very low after
treatment, 0.1 for E2. Our samples have a low
hydrocarbon content for E1 and a total absence of
hydrocarbon after treatment for E2.
The chemical oxygen demand presents values lower
than the maximum provided for by the standard, i.e. 68.0
for E1 and 26.0 for E2 at the outlet. As for the biochemical
oxygen demand, this has a high value at the inlet,
moderately higher than the standard which requires an
almost zero value (tending to zero) for any effluent
deemed potable, but this is 33.0 for E1 before treatment
and decreases considerably after treatment for E2, i.e.
12.0. Thus, the DCO/DBO ratio of our samples gives
values less than 3 before, as well as after treatment; either
for E1: 2 < 3; and E2: 2.1< 3, hence referring to the
classification according to the aptitude for biodegradation
by Rodier (2009), we conclude that SOCIR effluents after
treatment remain easily biodegradable and comply with
the API standards in force in the company and therefore
present a low risk of contamination after discharge into
the Congo River. Despite these results, a series of
recommendations was made to the company and the
Congolese State.
Keywords :
Assessment, Process, Management, Production, Effluent.