Impact of Industrial Effluents on Water Quality of Streams in Nakawa-Ntinda, Uganda

Walakira, Paul; Okot-Okumu, James

doi:10.4314/jasem.v15i2.68512

Cited by 39 publications

(53 citation statements)

References 10 publications

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“…Presence of chloride ion in Nkoho River agrees with the report of Walakaria [35], that chloride is commonly found in streams and freshwater. However, there was a sharp increase after the effluent discharge in the midstream value of chloride.…”

Section: Effluentsupporting

confidence: 78%

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Assessment of Saclux Paint Industrial Effluents on Nkoho River in Abia State, Nigeria

Chidozie¹,

Nwakanma²

2017

J Ecosyst Ecogr

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Water plays an important role in determining the quality of life on earth and yet this role is threatened by indiscriminate discharge of industrial effluents. The study aimed to assess the potential impact of industrial effluents from Saclux paint industry on the water quality of Nkoho River in Abia state, Nigeria. Water samples were taken at the effluent discharge point, upstream and downstream of the discharge point in the month of September, October and November, 2016 and geo-referenced using Garmin 76CSx Global Positioning system (GPS). The results showed that there were variations in the water quality characteristics in the different sampling time (September, October and November). Temperature, total solids (TS), suspended solids (SS), total dissolved solids (TDS), electrical conductivity (EC), turbidity and colour of the water samples were significantly higher (p<0.05) at the mid-stream compared to the upstream and downstream in the month of September, but varied in the month of October and November, while hardness, nitrate, acidity, microbial load (TVC), total coliform, biochemical oxygen demand (BOD) and chemical oxygen demand (COD) were significantly higher (p<0.05) at the upstream compared to midstream and down-stream in the different sampling time. Temperature (29.16-31.00°C), TS (3188.00-3973.70 mg/L), SS (2980.00-3848.67 mg/L), turbidity (119.43-131.47 NTU), pH (8.83-9.03), phosphate (99.23-120.13 mg/L) and phenol concentration (101.74-108.57 mg/L) of the effluent were above the Federal Ministry of Environment (FMEnv) limits, while SS, NTU, phenol, sulphate, phosphate, TVC, total coliform and EC of the water samples exceeded regulatory standards of FMEnv and WHO for surface water quality. The variations in the water quality parameters could be attributed to possible differences in the batches of paint produced at the different test time. It can be concluded from the study that the poor water quality might confer potentials hazards to aquatic life and end users.

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Section: Effluentsupporting

confidence: 78%

“…The presence of colour in water does not necessarily indicate that the water is not potable. Colours in natural waters can originate from decomposition of organic matter and discharge of certain waste [35].…”

Section: Effluentmentioning

confidence: 99%

Assessment of Saclux Paint Industrial Effluents on Nkoho River in Abia State, Nigeria

Chidozie¹,

Nwakanma²

2017

J Ecosyst Ecogr

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“…Both the influent and effluent concentrations were significantly higher than the effluent discharge limit of 150mS/cm although the influent concentrations are relative higher than the effluent concentrations. Even though our results for both the influent and effluent points are relatively lower than few sites that reported EC in Uganda [14], but there was one site which revealed high levels of EC in the same Ugandan study. Nevertheless, our results are far higher than what was reported in South Africa [8].…”

Section: Resultscontrasting

confidence: 39%

Wastewater Effluents at Sierra Leone Bottling Company Limited: Composition, Assessment and Removal Efficiency of Physico-chemical Parameters

Beah¹

2017

WROS

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Abstract:The analyses of industrial effluents at Sierra Leone Bottling Company Limited (SLBC) in Freetown, the capital city of Sierra Leone were conducted to assess its composition, and removal efficiency of physico-chemical parameters. Fifteen (15) samples were collected from the drain water (influent), pre treatment effluent and treated effluent (effluent) for five days. There were significantly higher concentrations of influents parameters relative to those of the corresponding effluents. The influent levels for pH, electrical conductivity and chloride were higher than permissible threshold. 80% of the samples at the influent point were within permissible guideline for TDS but all were in total agreement with the effluent samples for the same parameter. Comparative analyses showed significant reduction in values for pH, temperature, iron and chromium in the effluent samples relative to the influent samples and all of the other parameters did not show any statistically significant differences. The treatment plant was noted to be highly efficient in removing iron and chromium but least efficient for total dissolved solids and water temperature. Huge variances with respect to removing contaminants for chloride, electrical conductivity and total dissolved solids were observed. The average overall removal efficiency of contaminants in industrial effluents was low but the practice of treating industrial wastewater by SLBC was plausible. Considering the pollution load of certain parameters being investigated, it is imperative for the SLBC to initiate the process of setting up waste stabilization ponds (WSP) so as to contain industrial effluents for further examination before they are discharged into the environment.

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“…Due to drawdown river discharge (hypoxia or anoxia) and increased temperatures and reduced water quality in peak time (mid September to mid of December) CWCR, the health of ecosystem is usually at stake in these months, so maintaining ecosystem health and improving biodiversity in such months is more important for water resources planners. This poses a health risk to several rural communities which rely on the receiving water bodies primarily as their sources of domestic water and for other purpose [18].…”

Section: Discussionmentioning

confidence: 99%

Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia

Mosissa¹

2016

AJEP

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Abstract:The objective of this study was to assess the effects of recurrent effluent outfall from conventional wet washed coffee refineries (CWCR) on environmental flows (Eflows) based on the physicochemical parameters & benthos assemblages as biological indicators. The experiment was done using complete randomized design (CRD) with 3 composite replicates at each 24 sampling sites of 4 river water basins. Six sampling sites were selected for physico-chemical & 2 sampling sites were selected for benthos assemblages samples along each 4 river basin. Data analyses were performed by different statistical analyses such as analysis of variance (ANOVA) using SAS 9.2 and Minitab 16.0 software. Results of physicochemical parameters with biological revealed that there is highly significant effect between 4 Eflows & among 24 sites at (p<0.05). Characteristics of effluent outfall from CWCR has a BOD of up to 2993 mg/L and a COD of up to 2867 mg/L as well as the acidity of pH below 3. These results can lead to depletion of DO and a decrease in pH (due to fermentation of organic matter) may hamper the sustainability of water bodies, which can kill off virtually all aquatic life. Except pH and DO, the other physico-chemical parameters exhibited that they were negative correlation with benthos assemblages. The results suggest that Eflows status of DS 2 were depredation by effluent outfall from the conventional wet coffee refineries as compared to UPS. Therefore, face urgent intervention in the area of coffee refinery for effluent management and well designed treatment technologies (lagoons) for coffee waste treatment is highly recommended.

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Impact of Industrial Effluents on Water Quality of Streams in Nakawa-Ntinda, Uganda

Cited by 39 publications

References 10 publications

Assessment of Saclux Paint Industrial Effluents on Nkoho River in Abia State, Nigeria

Assessment of Saclux Paint Industrial Effluents on Nkoho River in Abia State, Nigeria

Wastewater Effluents at Sierra Leone Bottling Company Limited: Composition, Assessment and Removal Efficiency of Physico-chemical Parameters

Environmental Flows Risk Assessment of Effluent Outfalls from Conventional Wet Washed Coffee Refineries in Limu Kosa District of Southwestern Ethiopia

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