scholarly journals Hydrochemical characteristics of the Gallikos River water, Prefecture of Kilkis, Greece

2013 ◽  
Vol 9 (3) ◽  
pp. 251-258
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Basin ◽  
Major Ions ◽  
Groundwater Resources ◽  
Aegean Sea ◽  
Geological Structure ◽  
Quaternary Deposits ◽  
North Aegean Sea ◽  
Water Quality Deterioration

The Gallikos river basin is located in the northern part of Greece and discharges into the Thermaikos Gulf, North Aegean sea. Three main tributaries contribute to the river, the basin of which has a total areal extent of 930 km2. The basin of Gallikos river is formed of metamorphic rocks, limestones, Neogene and Quaternary deposits. Groundwater resources are mainly located within the carbonate rocks and the quaternary deposits. Water quality deterioration is documented based on the performed hydrochemical analyses of samples collected along the river course and its tributaries during the end of the wet and the dry seasons of year 2004. Results were correlated to the groundwater quality as this is reflected by analyses conducted on samples collected from wells adjacent to the river over the same periods. Samples were analyzed for major ions, nitrates, BOD5, COD, heavy metals and boron, whilst in situ measurements of pH, electrical conductivity and water temperature were performed. River water quality is related to the flow regime and is influenced by the geological structure, agricultural activities, as well as by untreated waste effluent that is discharged from villages and small industrial units that are scattered along the river basin.

scholarly journals Spatiotemporal hydrochemical variations in river water in the Qilian Mountains and their sources: a case study of the Binggou River Basin

2019 ◽  
Vol 9 (4) ◽  
pp. 731-742
Author(s):  
Junju Zhou ◽  
Juan Xiang ◽  
Guofeng Zhu ◽  
Li Lei ◽  
Jianjun Cao ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Basin ◽  
Human Activity ◽  
Major Ions ◽  
Northwest China ◽  
Quality Analysis ◽  
Source Analysis ◽  
River Water Chemistry ◽  
Variation Characteristics

Abstract The headwater region of inland China is immensely important for sustaining livelihoods and maintaining ecological balance, highlighting the need to characterize and assess water quality in this region. The aim of this study is to acquire a comprehensive understanding of the spatiotemporal variation characteristics of river water chemistry and to identify the sources of major ions in the Binggou River Basin, Northwest China. The results show that the water of the Binggou River is neutral freshwater. SO42− is the major anion, Ca2+ is the major cation and the river type is Ca–Na–SO4–HCO3. The concentrations of Na+, Mg2+, SO42−, NO3−, and total dissolved solid are slightly higher than the global average. The seasonal variations of major ion concentrations in the river are highest in winter but lowest in autumn, whereas the spatial variations are greater in the east branch than in the west branch and upstream compared with downstream. Source analysis of the ions indicates that rock weathering is the main source of ions, followed by human activities such as farmland fertilization and coal burning. Water quality analysis shows that the river water is suitable for drinking and irrigation, but the water quality is relatively poor in areas with more human activity, which indicates that human activity greatly influences water quality.

scholarly journals Trend in river water quality: tracking the overall impacts of climate change and human activities on water quality in the Dez River Basin

2020 ◽  
Author(s):  
Nariman Mahmoodi ◽  
Khaled Osati ◽  
Ali Salajegheh ◽  
Mohsen Mohseni Saravi
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Basin ◽  
Groundwater Resources ◽  
Kendall Test ◽  
Quality Parameters ◽  
Quality Parameter ◽  
River Water Quality

Abstract A perceptible degradation in water quality complicates safe water supply for drinking and irrigation purposes. Therefore, this study aims at monitoring water quality changes and effective factors in the Dez River Basin, which are required to manage water resources effectively. To this end, the common influence of flow rate changes on water quality was separated by implementing seasonal Mann–Kendall test on residuals resulting from the LOWESS test. The results show that after adjusting the effects of seasonality and streamflow fluctuations, significant positive trends in most water quality parameters are still observed. It emphasizes the role of other factors controlling river water quality in the basin. Comparison of the trends of modified quality parameter time series (residuals) in different subbasins having natural or mad-made conditions, with or without significant groundwater resources, shows almost the same presented trends in water quality. This supports that, overall, minor changes occurred in land use, groundwater table, and environmental and human factors with no important influences on presented trends in water quality. Our analyses show that overall reduction in precipitation as well as positive trends in temperature and evaporation led to intensified streamflow variations, explaining the main changes in the river water quality of the basin.

Analysis of water pollution and evaluation of purification measures in an urban river basin

1996 ◽  
Vol 34 (12) ◽  
pp. 33-40 ◽  
Author(s):  
Y. Hosoi ◽  
Y. Kido ◽  
H. Nagira ◽  
H. Yoshida ◽  
Y. Bouda
Keyword(s):  
Water Quality ◽  
River Water ◽  
River Basin ◽  
Urban Areas ◽  
River Flow ◽  
Sea Water ◽  
Water Quality Management ◽  
River Water Quality ◽  
Urban River ◽  
Pollutant Load

The inflow of pollutant load from urban areas and the stagnation of water due to sea water intrusion cause the deterioration of river water quality in tidal zone. In order to improve water quality, various measures such as the reduction of pollutant load by sewage systems, discharge control from sewage treatment plants considering river flow, nutrient removal by aquatic plants, and the dredging of bottom sediments have been examined. The choice of these measures depends on the situation of the river environment and finances. In this study, a field survey was carried out in a typical urban river basin, first. Secondly, on the basis of this survey, a mathematical model was formed to simulate flow and water quality. Several purification alternatives designed for the investigated river basin were comparatively evaluated from the viewpoint of the effect of water quality improvement and their cost. Finally, they were prioritized. Through this case study, a planning process of river water quality management was shown.

scholarly journals PROPOSE AN APPROPRIATE MANAGEMENT MODEL FOR SAI GON RIVER WATER QUALITY

2012 ◽  
Vol 15 (4) ◽  
pp. 71-86
Author(s):  
Thang Viet Le ◽  
Triet Minh Lam ◽  
Tan Manh Le ◽  
Tai Manh Pham
Keyword(s):  
Water Quality ◽  
Environmental Protection ◽  
River Water ◽  
River Basin ◽  
Water Quality Management ◽  
Water Source ◽  
Local Area ◽  
River Water Quality ◽  
Management Model ◽  
Organization Modeling

The article proposed an appropriate organization modeling for Sai Gon river water quality management based on the analysis having scientific and practical basic about aspects have done and aspects limited of LVS management organization (LVS environmental protection Committee) in past time, lesson learnt from effective LVS management performance of countries in the world as well as based on actual study changes in Sai Gon river water quality in many years and practically coordination management and environmental protection river among local area along river basin. The proposed modeling is feasible and practical aim to protect Sai Gon river water source serving for different purposes such as supply water for domestic demand, industry, irrigation, river landscape – tourism, and waterway etc., towards sustainable development of local area along river basin.

Variations of water quality deterioration based on GIS techniques in surface and groundwater resources in and around Vembanad Lake, Kerala, India

Geochemistry ◽  
2020 ◽  
Vol 80 (4) ◽  
pp. 125626
Author(s):  
Sruthy Sajeev ◽  
Selvam Sekar ◽  
Binoj Kumar ◽  
Venkatramanan Senapathi ◽  
Sang Yong Chung ◽  
...  
Keyword(s):  
Water Quality ◽  
Groundwater Resources ◽  
Gis Techniques ◽  
Quality Deterioration ◽  
Water Quality Deterioration ◽  
Surface And Groundwater

scholarly journals River water quality assessment using environmentric techniques: case study of Jakara River Basin

2013 ◽  
Vol 20 (8) ◽  
pp. 5630-5644 ◽  
Author(s):  
Adamu Mustapha ◽  
Ahmad Zaharin Aris ◽  
Hafizan Juahir ◽  
Mohammad Firuz Ramli ◽  
Nura Umar Kura
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
River Water ◽  
River Basin ◽  
Water Quality Assessment ◽  
River Water Quality

scholarly journals Spatio-temporal variation analysis of hydrochemical characteristics in the Luanhe River Basin, China

2013 ◽  
Vol 67 (6) ◽  
pp. 1332-1338 ◽  
Author(s):  
Ying Xie ◽  
Xuyong Li ◽  
Huiliang Wang ◽  
Wenzan Li
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Temporal Variation ◽  
River Water ◽  
River Basin ◽  
Pollution Control ◽  
Spatial And Temporal Variation ◽  
Hydrochemical Characteristics ◽  
Water Pollution Control ◽  
Luanhe River Basin

The analysis of river pollution and assessment of spatial and temporal variation in hydrochemistry are essential to river water pollution control in the context of rapid economic growth and growing pollution threats in China. In this study, we focused on hydrochemical characteristics of the Luanhe River Basin (China) and evaluation of 12 hydrochemical variables obtained from 32 monitoring stations during 2001–2010. In each study year, the streams were monitored in the three hydrological periods (April, August, and October) to observe differences in the impacts of agricultural activity and rainfall pattern. Multivariate statistical methods were applied to the data set, and the river water hydrochemical characteristics were assessed using the water quality identification index (WQIIM). The results showed that parameters had variable contribution to water quality status in different months except for ammonia nitrogen (NH4-N) and total nitrogen (TN), which were the most important parameters in contributing to water quality variations for all three periods. Results of WQIIM revealed that 18 sites were classified as 'meeting standard' while the other 14 sites were classified as 'not meeting standard', with most of the seriously polluted sites located in urban area, mainly due to discharge of wastewater from domestic and industrial sources. Sites with low pollution level were located primarily in smaller tributaries, whereas sites of medium and high pollution levels were in the main river channel and the larger tributaries. Our findings provide valuable information and guidance for water pollution control and water resource management in the Luanhe River Basin.

Sign in / Sign up

Export Citation Format

Share Document