ASSESSMENT OF WATER QUALITY OF THE DANUBE RIVER USING WATER QUALITY INDICES TECHNIQUE

2019 ◽  
Vol 18 (8) ◽  
pp. 1727-1737 ◽  
Author(s):  
Alhassan H. Ismail ◽  
Diana Robescu
Keyword(s):  
Water Quality ◽  
Danube River ◽  
Quality Indices ◽  
Water Quality Indices ◽  
The Danube River

scholarly journals The Water quality of the Danube River and gravel pits in the Bratislava area (Slovakia)

2014 ◽  
Vol 6 (4) ◽  
pp. 203-210 ◽  
Author(s):  
Renáta Fľaková ◽  
Milan Seman ◽  
Hana Drahovská ◽  
Zlatica Ženišová ◽  
Alexandra Ďuričková
Keyword(s):  
Water Quality ◽  
Danube River ◽  
The Danube River ◽  
Gravel Pits

Evaluation of Water Quality Indices Adequacy in Characterizing the Physico-Chemical Water Quality of Lakes

2017 ◽  
Vol 4 (S1) ◽  
pp. 35-46 ◽  
Author(s):  
Eleni Trikoilidou ◽  
Georgios Samiotis ◽  
Lazaros Tsikritzis ◽  
Theodoros Kevrekidis ◽  
Elisavet Amanatidou
Keyword(s):  
Water Quality ◽  
Quality Indices ◽  
Water Quality Indices ◽  
Physico Chemical ◽  
Chemical Water

Assessing the groundwater quality of a small-scale mining drainage basin using modified water quality indices

2021 ◽  
Vol 14 (16) ◽  
Author(s):  
Olufemi Victor Omonona ◽  
Amobi Chigozie Ekwe ◽  
George-Best Azuoko ◽  
Stephen N. Ukpai
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Drainage Basin ◽  
Small Scale ◽  
Quality Indices ◽  
Water Quality Indices

scholarly journals Evaluation of water quality and eutrophication status of Hawassa Lake based on different water quality indices

2021 ◽  
Vol 11 (3) ◽  
Author(s):  
Zemed Menberu ◽  
Beshah Mogesse ◽  
Daniel Reddythota
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Secchi Depth ◽  
Mitigation Measures ◽  
Ethiopian Rift ◽  
Quality Indices ◽  
Water Quality Indices ◽  
Canadian Council

AbstractLake Hawassa is one of the major Ethiopian Rift Valley Lakes having an endorheic basin system. The surrounding community makes use of the lake water for the multiple purposes of irrigation, domestic water supply, recreation and fish harvesting. The aim of the present study was to ascertain the water quality of the lake in terms of water quality indices (WQI) and its health over a period of three months covering both dry and wet seasons. Overall, the water quality of Lake was unfit and bad as per the weighted arithmetic method (120.06–228.29) and modified Bascarón water quality index (MBWQI) methods (26.81–33.89), respectively. However, the quality was indicated as marginal, as per the Canadian Council of Ministers of the Environment (CCME) water quality index method (44.2–51.1). On average, the lake was under the hypertrophic stage as per the standard based on the results of Secchi depth and nutrient concentration. The current study showed the lake being unfit for all-purposes as per WAWQI range (> 100). According to the physicochemical and biological parameters, of the lake, it requires mitigation measures to control Eutrophication and pollutants inflow.

scholarly journals Long-Term Trends in Water Quality Indices in the Lower Danube and Tributaries in Romania (1996–2017)

2021 ◽  
Vol 18 (4) ◽  
pp. 1665
Author(s):  
Rodica-Mihaela Frîncu
Keyword(s):  
Water Quality ◽  
Biosphere Reserve ◽  
Principal Component ◽  
River Basin Management ◽  
Danube River ◽  
Quality Indices ◽  
Ecological Value ◽  
Water Quality Indices ◽  
Long Term Trends

The Danube River is the second longest in Europe and its water quality is important for the communities relying on it, but also for supporting biodiversity in the Danube Delta Biosphere Reserve, a site with high ecological value. This paper presents a methodology for assessing water quality and long-term trends based on water quality indices (WQI), calculated using the weighted arithmetic method, for 15 monitoring stations in the Lower Danube and Danube tributaries in Romania, based on annual means of 10 parameters for the period 1996–2017. A trend analysis is carried out to see how WQIs evolved during the studied period at each station. Principal component analysis (PCA) is applied on sub-indices to highlight which parameters have the highest contributions to WQI values, and to identify correlations between parameters. Factor analysis is used to highlight differences between locations. The results show that water quality has improved significantly at most stations during the studied period, but pollution is higher in some Romanian tributaries than in the Danube. The parameters with the highest contribution to WQI are ammonium and total phosphorus, suggesting the need to continue improving wastewater treatment in the studied area. The methodology and the results of the study may be very useful instruments for specialists and decision makers in updating river basin management plans and prioritising intervention measures.

scholarly journals Assessment of water quality using chemometric methods - a case study of Rusałka Lake, NW-Poland

2020 ◽  
Vol 27 ◽  
pp. 80-89
Author(s):  
Tymoteusz I. Miller
Keyword(s):  
Water Quality ◽  
Cluster Analysis ◽  
Factor Analysis ◽  
Discriminant Analysis ◽  
Anthropogenic Activities ◽  
Chemometric Methods ◽  
Quality Indices ◽  
Water Quality Indices ◽  
Chl A

Chemometric methods, such as cluster analysis, factor analysis and discriminant analysis were applied to identify and assess the quality of lake water. Samples were collected from the Rusałka Lake, located in Szczecin City from September 2012 to September 2015 with frequency once a month. 25 water quality indices were evaluated in particular: Chl a, Eh, temperature, pH, COD-Mn, COD-Cr, BOD5, DO, NO3-, NO2-, NH4+, TN, SRP, TP, Ca2+, Mg2+, Cl-, SO42- ,HCO3-, Fetot, Mntot, Pb, Zn, Cd, Cu. Cluster analysis was performed to determine the similarity in terms of variation of the examined water quality indices and to determine seasonal variation between inflow and outflow areas of the lake. Factor analysis revealed that water quality is shaped by high anthropogenic activities. Discriminant analysis was used for the final assessment of which of the studied variables discriminate between the inflow and outflow zones and seasons. The chemometric approach and results provided useful information on the type of parameters affecting the quality of water in the analyzed lake. The data and information obtained can lead to better understanding of changes which are present in small flow lakes under high anthropopressure.

scholarly journals Assessing the Water Quality of Lake Hawassa Ethiopia—Trophic State and Suitability for Anthropogenic Uses—Applying Common Water Quality Indices

2021 ◽  
Vol 18 (17) ◽  
pp. 8904
Author(s):  
Semaria Moga Lencha ◽  
Jens Tränckner ◽  
Mihret Dananto
Keyword(s):  
Water Quality ◽  
Trophic State ◽  
Point Sources ◽  
World Health ◽  
Quality Indices ◽  
Water Quality Indices ◽  
Canadian Council ◽  
Good For ◽  
Ccme Wqi

The rapid growth of urbanization, industrialization and poor wastewater management practices have led to an intense water quality impediment in Lake Hawassa Watershed. This study has intended to engage the different water quality indices to categorize the suitability of the water quality of Lake Hawassa Watershed for anthropogenic uses and identify the trophic state of Lake Hawassa. Analysis of physicochemical water quality parameters at selected sites and periods was conducted throughout May 2020 to January 2021 to assess the present status of the Lake Watershed. In total, 19 monitoring sites and 21 physicochemical parameters were selected and analyzed in a laboratory. The Canadian council of ministries of the environment (CCME WQI) and weighted arithmetic (WA WQI) water quality indices have been used to cluster the water quality of Lake Hawassa Watershed and the Carlson trophic state index (TSI) has been employed to identify the trophic state of Lake Hawassa. The water quality is generally categorized as unsuitable for drinking, aquatic life and recreational purposes and it is excellent to unsuitable for irrigation depending on the sampling location and the applied indices. Specifically, in WA WQI, rivers were excellent for agricultural uses and Lake Hawassa was good for agricultural uses. However, the CCME WQI findings showed rivers were good for irrigation but lake Hawassa was marginal for agricultural use. Point sources were impaired for all envisioned purposes. The overall category of Lake Hawassa falls under a eutrophic state since the average TSI was 65.4 and the lake is phosphorous-deficient, having TN:TP of 31.1. The monitored point sources indicate that the city of Hawassa and its numerous industrial discharges are key polluters, requiring a fast and consequent set-up of an efficient wastewater infrastructure, accompanied by a rigorous monitoring of large point sources (e.g., industry, hospitals and hotels). In spite of the various efforts, the recovery of Lake Hawassa may take a long time as it is hydrologically closed. Therefore, to ensure safe drinking water supply, a central supply system according to World Health organization (WHO) standards also for the fringe inhabitants still using lake water is imperative. Introducing riparian buffer zones of vegetation and grasses can support the direct pollution alleviation measures and is helpful to reduce the dispersed pollution coming from the population using latrines. Additionally, integrating aeration systems like pumping atmospheric air into the bottom of the lake using solar energy panels or diffusers are effective mitigation measures that will improve the water quality of the lake. In parallel, the implementation and efficiency control of measures requires coordinated environmental monitoring with dedicated development targets.

scholarly journals WATER QUALITY INDICES - METHODS FOR EVALUATING THE QUALITY OF DRINKING WATER

2016 ◽  
Author(s):  
Iuliana Paun ◽  
◽  
Liliana Valeria Cruceru ◽  
Florentina Laura Chiriac ◽  
Marcela Niculescu ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Quality Indices ◽  
Water Quality Indices
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