scholarly journals Effect of Bahir Dar municipal effluents on water quality of the head of Blue Nile River

2016 ◽  
Vol 9 (2) ◽  
pp. 197
Author(s):  
Abrehet Kahsay Mehari ◽  
Shewit Gebremedhin ◽  
Belayneh Ayele
Keyword(s):  
Water Quality ◽  
Nile River ◽  
Bahir Dar ◽  
Blue Nile

scholarly journals Assessment of Water Quality of Blue Nile River in Sudan

2018 ◽  
Vol 1 (3) ◽  
pp. 1-14
Author(s):  
Rasha Babiker Gurashi Abu Sabah ◽  
Abubaker Haroun Mohamed Adam ◽  
Dawoud Mohamed Ali
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
World Health ◽  
Nile River ◽  
Blue Nile ◽  
Surrounding Environment ◽  
The World ◽  
Living Organisms ◽  
Health Organization

The objectives of this study were to quantify the fresh water quality of Blue Nile River before processing, identify the pollutants, and to determine the most polluted areas, and their impacts on living organisms as well as the surrounding environment. Thus, random water samples were collected and analyzed at the laboratory of the Ministry of Irrigation and Water Resources, Ground water and Wadis Directorates - Khartoum. The outcomes were compared with the World Health Organization standardization. The results revealed variations in the concentration of the studied elements taken from the different locations. But, the results indicated that the water quality is good, and it is within the permissible water use. However, further study is recommended to include seasonal variation as well as the biological analysis.

scholarly journals Physico-chemical and biological evaluation of Blue Nile River at Lake Tana, Ethiopia, in relation to discharge of tannery effluent

2020 ◽  
Vol 13 (3) ◽  
pp. 185-195
Author(s):  
Mekdes Hone ◽  
Getachew Beneberu
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Samples ◽  
Biological Evaluation ◽  
Nile River ◽  
Tannery Effluent ◽  
Bahir Dar ◽  
Chironomid Larvae ◽  
Blue Nile ◽  
Low Dissolved Oxygen

Pollution of aquatic ecosystems with waste-water coming from tanneries is a serious challenge worldwide. The purpose of this study was to assess the water quality of Blue Nile River at a tannery in Bahir Dar, Ethiopia, using physicochemical and biological attributes. Four sampling sites were selected along the river based on the degree of degradation and major land-use types. Phyisco-chemical data, water samples, and chironomid larvae were collected monthly from March-May, 2016. Two liters of water were collected from each site and stored in the icebox and transported to Bahir Dar University. Water samples were analyzed for nutrients following standard procedures.  Chironomid larvae were collected using a D- Frame net of 500 µm mesh size. One-way ANOVA was used to compare variations in all measured parameters among the sampling sites. Low dissolved oxygen (2.8 mg/l) was recorded at the site where the tannery meets the river. Moreover, the concentration of soluble reactive phosphorus, SRP (25.5±14.3 μg/l) and conductivity (1907.3±39.5 µS/cm) were low in the most upstream site of the river. A total of six Chironomid genera belonging to the subfamilies Chironominae and Tanypodinae were identified.  The genus Chironomus dominated the impacted sites that had low dissolved oxygen levels. The other five genera were not found in those impacted sites. The result of this study indicated that the tannery effluent had impact on chironomid distribution as well as on river water quality.

scholarly journals Effects of Bahir Dar Textile Factory Effluents on the Water Quality of the Head Waters of Blue Nile River, Ethiopia

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Abrehet Kahsay Mehari ◽  
Shewit Gebremedhin ◽  
Belayneh Ayele
Keyword(s):  
Water Quality ◽  
Total Alkalinity ◽  
Biotic Index ◽  
Nile River ◽  
Bahir Dar ◽  
Upstream Site ◽  
Blue Nile ◽  
Family Level ◽  
The Mean ◽  
Textile Factory

The study was conducted in 2013/14 with the objective of determining the effects of Bahir Dar textile factory effluents on the head of Blue Nile River water quality. Dissolve oxygen was higher at the upstream site of the river, whereas BOD5, TDS, and total alkalinity values were higher at wastewater outlet of the factory site. The mean values of dissolved oxygen, BOD5, and total alkalinity were above maximum permissible limits set by WHO for drinking water at head of Blue Nile River. The mean value of BOD5 was above permissible limit of IFC for textile effluents to be discharged to surface water. A total of 836 aquatic macroinvertebrate individuals belonging to 21 families were collected. The Shannon-Wiener Diversity Index, the Hilsenhoff family-level biotic index, family richness, and percent dipterans were calculated. Hilsenhoff family-level biotic index and percent dipterans metrics differed significantly among sampling sites(P<0.05). Hilsenhoff family-level biotic index was higher at the most downstream site but percent dipterans were higher at site of discharge of effluent to the head of Blue Nile River. Therefore, there is indication that effluent demands frequent control and proper treatment before being discharged to the environment.

Seasonal variation of water quality of nile river at helwan area

1995 ◽  
Vol 30 (9) ◽  
pp. 1957-1972
Author(s):  
M.A. Zayed ◽  
F.A. Nour El‐Dien ◽  
K.A.A. Rabie ◽  
M. EL‐Moattassem
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
Nile River

scholarly journals Effects of pollution on hydrogeochemistry and water quality of the Damietta branch (Nile River, Egypt)

2021 ◽  
Vol 84 (6) ◽  
pp. 1509-1517
Author(s):  
Engy Elhadad ◽  
Majed Ibrahim ◽  
Abdullah Al-Fawwaz
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Alkali Metals ◽  
Alkaline Earth ◽  
Nile River ◽  
Magnesium Hazard ◽  
Kelly’S Ratio ◽  
Different Sources ◽  
Quality Indexes

Abstract Currently, different sources of contamination threaten water quality in Damietta, Egypt. The aim of this study was to assess the pollution, hydrogeochemistry and suitability for use in agriculture of water collected atseven stations along the Damietta branch of the Nile River. In addition to pH, temperature, dissolved oxygen (DO), and electrical conductivity (EC), levels of Mg2+, Ca2+, K+, Na+, Cl−, HCO3−, SO42− and CO32− were measured. From the highest to the lowest, the concentrations of cations were Na+ &gt; Ca2+ &gt; Mg2+ &gt; K+, whereas those of anions were HCO3− &gt; SO42− &gt; Cl− in water samples collected at seven stations along the Damietta branch. Moreover, water quality indexes, such as sodium percentage (Na%) ranged between 21.6 and 71.4, Kelly's ratio from 0.37 to 3.85, sodium adsorption ratio (SAR) varied from 1.73 to 61.8, residual sodium carbonate (RSC) found to be in range of 0.2 to 3.8. Also, the potential salinity (PS) and permeability index (PI), magnesium hazard (MH), were calculated. Most samples (71%) belonged to the Mg–Ca–Na–HCO3 watertype. Fertilization wastes were identified as the main contributors of alkaline earth metals, whereas ion exchange was the main source of alkali metals. This work also provides information on distinguishing geochemical behaviors and the pollution of water samples.

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