scholarly journals THE�RISK�ASSESSMENT�OF�SURFACE�WATER�QUALITY�DETERIORATION�

2012 ◽  
Author(s):  
Martina Zelenakova
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Surface Water ◽  
Surface Water Quality ◽  
Quality Deterioration ◽  
Water Quality Deterioration

scholarly journals Evaluation of the River-Shallow Aquifer Exchange Process Effect on Surface Water Quality Deterioration

2017 ◽  
Vol 05 (06) ◽  
pp. 121-132
Author(s):  
Ismail Karaoui ◽  
Abdelkrim Arioua ◽  
Abdelkhalek El Amrani Idrissi ◽  
Wafae Nouaim ◽  
Driss Elhamdouni ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Exchange Process ◽  
Surface Water Quality ◽  
Shallow Aquifer ◽  
Quality Deterioration ◽  
Water Quality Deterioration

scholarly journals Seasonal Dynamics of Surface Water Quality and River Water Quality Deterioration in an Urban Area of Mongolia

2021 ◽  
Vol 57 (4) ◽  
pp. 91-102
Author(s):  
OTGONBAYAR ZAGDRAGCHAA ◽  
ALTANTUYA BOLD ◽  
TAKESHI MIZUNOYA ◽  
HELMUT YABAR ◽  
MOTOO UTSUMI ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
River Water ◽  
Urban Area ◽  
Seasonal Dynamics ◽  
Surface Water Quality ◽  
River Water Quality ◽  
Quality Deterioration ◽  
Water Quality Deterioration

scholarly journals Surface water quality and health risk assessment of Kameng river (Assam, India)

2020 ◽  
Vol 15 (4) ◽  
pp. 1190-1201
Author(s):  
Kunwar Raghvendra Singh ◽  
Ankit Pratim Goswami ◽  
Ajay S. Kalamdhad ◽  
Bimlesh Kumar
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Surface Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Sampling Site ◽  
Human Health Risk ◽  
Surface Water Quality ◽  
Agricultural Runoff

Abstract Present study evaluated the surface water quality of Kameng River (Assam, India). Kameng River is the tributary of the river Brahmaputra, having its confluence at its north bank. Water samples were collected from 9 different locations along the stretch and 24 parameters were analysed. Water quality at all sampling sites was expressed in terms of overall index of pollution (OIP). The OIP of all sampling sites varied between 1.30 and 1.74. Principal component analysis (PCA) was used to identify the latent factors influencing the water quality of the river. PCA revealed that domestic wastewater and agricultural runoff were the leading sources causing adulteration of the river's water quality. The degree of contamination of each sampling site due to heavy metals was calculated by the contamination index and an associated human health risk assessment was done by computing average daily intake and Hazard quotient (HQ). The HQ of all sampling sites varied from 0.14 to 1.21. This work presents the reliability and practicability of the integrated use of these approaches in river water quality monitoring and assessment. These methods will be very useful for policy makers for assessing the cause and effect of pollution of water bodies and implementing policies to keep pollution under check.

Risk-based water quality thresholds for coliphages in surface waters: effect of temperature and contamination aging

2019 ◽  
Vol 21 (12) ◽  
pp. 2031-2041 ◽  
Author(s):  
Alexandria B. Boehm
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Surface Water ◽  
Surface Waters ◽  
Surface Water Quality ◽  
Effect Of Temperature ◽  
Quantitative Microbial Risk Assessment ◽  
Assessment Framework ◽  
Microbial Risk Assessment ◽  
Microbial Risk

A quantitative microbial risk assessment framework is used to derive risk-based surface water quality thresholds for coliphages.

scholarly journals Surface water quality around DEPZ industrial area, Savar, Dhaka

2012 ◽  
Vol 47 (3) ◽  
pp. 279-286
Author(s):  
H Momtaz ◽  
F Alam ◽  
MA Ahsan ◽  
MA Akbor ◽  
MM Rashid
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Point Source ◽  
Chemical Constituents ◽  
Chemical Properties ◽  
Surface Water Quality ◽  
Industrial Area ◽  
Positive Interaction ◽  
Physico Chemical ◽  
Water Quality Deterioration

Some important physico-chemical properties of surface water around DEPZ industrial area, Savar were studied to evaluate the water quality. Seven water samples were collected from major waterbodies of DEPZ industrial area. The value of Physico-chemical parameter such as Temperature (57-24°C), pH (12.45-7.58), EC (12400-2060 ?s/cm), BOD5 (895-63.19 mg/L), TSS (2170-435 mg/L), TDS (6840-1036 mg/L), Turbidity (89.55-32.16 mg/L) and Salinity (7.1-1.0 ppt) were highest in the point source (W1) and began to decline as the waste dispersed through the nearby waterbodies (W2-W7). The result revealed that all the chemical constituents, except a few, were beyond the recommended limit for various uses. The lowest content of DO (0.10 mg/L) and highest content of BOD5 (895 mg/L) in point source waterbody indicate that the industries were releasing large amount of oxygen demanding organic wastes which subsequently affected all the studied waterbody. Among metal content of the study area, the value of Fe (1.331-0.443 mg/L), Zn (0.308-0.134 mg/L), Cu (0.244 0.127 mg/L) and Cr (0.615-0.055 mg/L) were gradually decreased from point source to the remote area. Point source (W1) waterbody had the highest concentration of Cr (0.615 mg/L) which exceeded the safe limit for industrial wastewater. This may be due to various chrome agent used in dyeing purposes. Anionic parameters like F- and PO4 3- were at intolerable limit in some waterbody. The coefficient of correlation analysis among physicochemical properties indicated that all the parameters had significant contribution to pollute the water. The correlation between DO and pH was strongly negative (r=-0.995**). Fe showed positive significant correlation with Zn, Cu and Cr. There was a significant positive interaction of PO4 3- with Cl- and NO3- in case of water quality deterioration. The above findings showed that the surface water around DEPZ industrial area was highly polluted by the industrial activities and was harmful for life. DOI: http://dx.doi.org/10.3329/bjsir.v47i3.13061 Bangladesh J. Sci. Ind. Res. 47(3), 279-286, 2012

scholarly journals Evaluation of surface water quality indices and ecological risk assessment for heavy metals in scrap yard neighbourhood

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Olusheyi Z. Ojekunle ◽  
Olurotimi V. Ojekunle ◽  
Azeem A. Adeyemi ◽  
Abayomi G. Taiwo ◽  
Opeyemi R. Sangowusi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Risk Assessment ◽  
Surface Water ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Surface Water Quality ◽  
Quality Indices ◽  
Water Quality Indices
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