scholarly journals Potential Impacts of Induced Bank Filtration on Surface Water Quality: A Conceptual Framework for Future Research

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1240 ◽  
Author(s):  
Mikael Gillefalk ◽  
Gudrun Massmann ◽  
Gunnar Nützmann ◽  
Sabine Hilt
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Water Level ◽  
Surface Water Quality ◽  
Organic Content ◽  
Water Level Fluctuations ◽  
Future Research ◽  
Seasonal Temperature ◽  
Bank Filtration

Studies on induced bank filtration (IBF), a cost-effective and reliable drinking water production method, usually focus on processes affecting the target drinking water quality. We aim to expand this view by assessing potential impacts of IBF on surface water quality. We suggest that IBF can directly and indirectly affect several physical, chemical and biological processes in both the sediment and open water column, eventually leading to positive or negative changes in source water quality. Direct effects of IBF comprise water level fluctuations, changes in water level and retention time, and in organic content and redox conditions in littoral sediments. Indirect effects are mainly triggered by interrupting groundwater discharge into the surface water body. The latter may result in increased seasonal temperature variations in sediment and water and reduced discharge of solutes transported by groundwater such as nutrients and carbon dioxide. These changes can have cascading effects on various water quality, e.g., by facilitating toxic phytoplankton blooms. We propose investigating these potential effects of IBF in future field and laboratory studies to allow for more detailed insights into these yet unknown effects and their magnitude in order to assure a sustainable application of this valuable technique in the future.

scholarly journals Monitoring surface water quality using social media in the context of citizen science

2017 ◽  
Vol 21 (2) ◽  
pp. 949-961 ◽  
Author(s):  
Hang Zheng ◽  
Yang Hong ◽  
Di Long ◽  
Hua Jing
Keyword(s):  
Water Quality ◽  
Social Media ◽  
Surface Water ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Quality Data ◽  
Future Research ◽  
Water Quality Data ◽  
Essential Information

Abstract. Surface water quality monitoring (SWQM) provides essential information for water environmental protection. However, SWQM is costly and limited in terms of equipment and sites. The global popularity of social media and intelligent mobile devices with GPS and photography functions allows citizens to monitor surface water quality. This study aims to propose a method for SWQM using social media platforms. Specifically, a WeChat-based application platform is built to collect water quality reports from volunteers, which have been proven valuable for water quality monitoring. The methods for data screening and volunteer recruitment are discussed based on the collected reports. The proposed methods provide a framework for collecting water quality data from citizens and offer a primary foundation for big data analysis in future research.

scholarly journals Impact of decreasing water demand on bank filtration in Saxony, Germany

2009 ◽  
Vol 2 (2) ◽  
pp. 101-126 ◽  
Author(s):  
T. Grischek ◽  
D. Schoenheinz ◽  
C. Syhre ◽  
K. Saupe
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Water Demand ◽  
Bank Filtration ◽  
Raw Water ◽  
Management Options ◽  
Flow And Transport ◽  
High Degree

Abstract. Bank filtration has been of main importance for the drinking water supply in Germany for many decades. The water quality of pumped raw water from bank filtration sites depends to a high degree on the water quality of the infiltrating surface water and the landside groundwater, the mixing portion of both as well as the flow and transport conditions in the aquifer. Since the improvement of river water quality and a drastic decrease in water demand during the last 15 years in Germany, the influence of landside groundwater quality has become more important for the raw water quality of waterworks relying on bank filtration. The hydrogeologic analysis of three bank filtration sites in Saxony and the management of abstraction rates and well operation in response to fluctuating water demand are discussed. In conclusion, a general overview on management options for bank filtration sites is provided.

scholarly journals On the issue of the Uzbekistan surface water quality assessment

2019 ◽  
Author(s):  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Surface Waters ◽  
Surface Water Quality ◽  
Water Quality Assessment ◽  
Soviet Period ◽  
Hazard Class ◽  
Difficult Situation

The article is devoted to the analysis of the quality of surface water in Uzbekistan. Analyzed their impact on the living conditions and health of the population of the republic. The most difficult situation with drinking water supply and with the growth of diseases caused by the use of poor-quality drinking water falls on the Navoi, Khorezm, Surkhandarya regions and Karakalpakstan. The stated data makes it relevant to conduct research to determine the quality of surface waters and improve the methods of its assessment. The analysis of existing methods for assessing the quality of surface waters. The technique of assessment of the index of pollution of water applied now in Uzbekistan counted in compliance with “Methodical recommendations about the formalized complex evaluation test of the surface and ocean waters about hydro/chemical indexes” was developed in Soviet period and doesn’t meet the modern requirements. The need to improve the methods for assessing the quality of surface waters as compared with that currently used in Uzhydromet is indicated. One of the most promising at present is the “Method of integrated assessment of the degree of contamination of surface waters by hydro/chemical indicators” developed and used in operational practice in Russia. The most informative comprehensive estimat water pollution and the class of water quality. The author proposed methods for assessing the quality of surface waters, the calculation of which is based on the use of a larger amount of initial information and are more reliable than those used. In particular, the proposed methodology for assessing the quality of surface waters, taking into account the hazard class of ingredients.

scholarly journals A Novel Method in Surface Water Quality Assessment Based on Improved Variable Fuzzy Set Pair Analysis

2019 ◽  
Vol 16 (22) ◽  
pp. 4314 ◽  
Author(s):  
Yucheng Liu ◽  
Chuansheng Wang ◽  
Yutong Chun ◽  
Luxin Yang ◽  
Wei Chen ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Fuzzy Set ◽  
Surface Water Quality ◽  
Quality Data ◽  
Set Pair Analysis ◽  
Water Quality Data ◽  
Variable Fuzzy Set ◽  
Pair Analysis

In the case of surface water pollution, it is important and necessary to accurately assess the level of contaminated water and ensure the safety of drinking water for people in disaster areas during floods. However, for the assessment of the strict requirements of drinking water, traditional assessment methods still have some limitations, such as low precision and rationality. In order to overcome these limitations, in the light of the theory of set pair analysis and variable fuzzy set, we propose an improved variable fuzzy set pair analysis method (IVFSPA), which combines the analysis framework of variable fuzzy set and set pair analysis, and has made some improvements to the fusion architecture. Firstly, we present a novel game theory comprehensive weighting method, in which the objective entropy method and the subjective analytic hierarchy process(AHP) method employed to obtain the reasonable weight. Then, based on the Nemerow index method, we improve the arithmetic form of “ P i ” (Equation P) to replace the fuzzy comprehensive evaluation method. Furthermore, we design a double judgment mode of combining the principle of maximum membership degree with the positive and negative relationship between the standard value and the measured value, which can accurately judge the evaluation level of surface water quality. Finally, to validate and verify the effectiveness of the proposed method, experiments was conducted at the representative river collection sections of Nanking, China, employing water quality data of 14 sampling sections in their rivers in Nanking during the 2017 flood. In terms of performance metcrics of precision and rationality, based on the values of “TP”, “NH3-N”, “Pb”, “AS” and “KMnO4” of “Ch-lh section/Chuhe gate” are 0.415, 3.77, 0.07, 0.23 and 7.12, respectively, the level of Ch-lh section/Chuhe gate is that the IVFSPA is Class V and the rest are class IV. Results of experiments show that our IVFSPA method can achieve a good performance, compared with other traditional methods.

scholarly journals Proportion of Municipal Water coming from Groundwater

2018 ◽  
Author(s):  
Adrian Barranco-Fabre
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Surface Water ◽  
Information Access ◽  
Surface Water Quality ◽  
Clean Water ◽  
Urban Water ◽  
Human Settlements ◽  
Municipal Water

Today, cities are looking farther beyond their limits for clean water. Many cities rely partially or totally on non-surface water like groundwater. The study of the Natural Conservancy focus on the analysis of surface water quality, while accounting for the groundwater importance in urban supply but without evaluation of the sustainability of the source. For more information, access the Urban Water Blueprint report here: http://www.iwa-network.org/wp-content/uploads/2016/06/Urban-Water-Blueprint-Report.pdf You can also visit the Urban Water Blueprint website here: http://water.nature.org/waterblueprint/#/intro=true Drinking water Groundwater Human settlements Supply

scholarly journals Monitoring surface water quality using social media in the context of citizen science

2016 ◽  
Author(s):  
Hang Zheng ◽  
Hong Yang ◽  
Di Long ◽  
Hua Jing
Keyword(s):  
Water Quality ◽  
Social Media ◽  
Surface Water ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Quality Data ◽  
Future Research ◽  
Water Quality Data ◽  
Essential Information ◽  
Social Media Platforms

Abstract. Surface water quality monitoring (SWQM) provides essential information for water environmental protection. However, SWQM is costly and is limited in terms of equipment and sites. The global popularity of social media and intelligent mobile devices with GPS and photograph functions provide immense opportunity for citizens to monitor surface water quality. This study aims to establish and demonstrate a method to monitor surface water quality using social media platforms. A WeChat-based application platform is built to collect water quality reports from volunteers. Results show that the monitoring reports are reliable if the volunteers are trained. The key application functions and the methods for data washing and volunteer recruitment are also discussed in this study. The proposed framework and method can provide a mechanism to collect water quality data from citizens and offer a primary foundation for big data analysis in future research.

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