Model-based quality management of groundwater resources – catchment area Liedern, Germany

2012 ◽  
Vol 66 (1) ◽  
pp. 210-216
Author(s):  
Christine Kübeck ◽  
Carsten Hansen ◽  
Christoph König ◽  
Dorothea Denzig ◽  
Wolfgang van Berk
Keyword(s):  
Water Quality ◽  
Reactive Transport ◽  
Transport Model ◽  
Groundwater Resources ◽  
Iron Concentration ◽  
Hydrogeochemical Processes ◽  
Management Tool ◽  
Raw Water ◽  
Raw Water Quality

Strategies of groundwater protection in agricultural dominated areas are mainly based on a general reduction of the input of nutrients like nitrate. However, preventive measures in different parts of the catchment may provide very different effects on raw water quality. Exemplified on the case study ‘Liedern’ (BEW GmbH Bocholt, Germany) it is shown that hydrogeochemical processes along the flow path and in the well strongly affect the results of agricultural measures in terms of modality and efficiency. Thus, a reduction of fertilization in the vicinity of the well gallery leads to a decrease of nitrate concentration in the raw water. Whereas agricultural measures in the eastern part of the catchment do not influence nitrate, but cause a reduction of the iron concentration and rate of incrustation in the wells after 18 years. In this study we present a management tool that enables assessment of future trends in raw water quality. The tool is based on a reactive transport model which considers land use dynamics as an instrument to influence groundwater/raw water quality. A thermodynamic equilibrium approach is applied for modelling hydrogeochemical processes between aqueous, solid and gaseous phases. Kinetically controlled reactions like the microbial degradation of organic carbon are expressed by multiplicative Michaelis–Menten equations.

Modelling raw water quality—development of a drinking water management tool

2008 ◽  
Vol 8 (5) ◽  
pp. 589-596
Author(s):  
Ch. Kübeck ◽  
W. van Berk ◽  
A. Bergmann
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Drinking Water ◽  
Agricultural Land ◽  
Groundwater Resources ◽  
Management Tool ◽  
Quality Development ◽  
Raw Water ◽  
Economic Resource ◽  
Raw Water Quality

Ensuring future drinking water supply requires a tough management of groundwater resources. However, recent practice of economic resource control often does not involve aspects of the hydrogeochemical and geohydraulical groundwater system. In respect of analysing the available quantity and quality of future raw water, an effective resource management requires a full understanding of the hydrogeochemical and geohydraulical processes within the aquifer. For example, the knowledge of raw water quality development with time helps to work out strategies of water treatment as well as planning finance resources. On the other hand, the effectiveness of planned measurements reducing the infiltration of harmful substances such as nitrate can be checked and optimized by using hydrogeochemical modelling. Thus, within the framework of the InnoNet program funded by Federal Ministry of Economics and Technology, a network of research institutes and water suppliers work in close cooperation developing a planning and management tool particularly oriented on water management problems. The tool involves an innovative material flux model that calculates the hydrogeochemical processes under consideration of the dynamics in agricultural land use. The program integrated graphical data evaluation is aligned on the needs of water suppliers.

Modelling raw water quality: development of a drinking water management tool

2009 ◽  
Vol 59 (1) ◽  
pp. 117-124 ◽  
Author(s):  
Ch. Kübeck ◽  
W. van Berk ◽  
A. Bergmann
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Drinking Water ◽  
Agricultural Land ◽  
Groundwater Resources ◽  
Management Tool ◽  
Quality Development ◽  
Raw Water ◽  
Economic Resource ◽  
Raw Water Quality

Ensuring future drinking water supply requires a tough management of groundwater resources. However, recent practices of economic resource control often does not involve aspects of the hydrogeochemical and geohydraulical groundwater system. In respect of analysing the available quantity and quality of future raw water, an effective resource management requires a full understanding of the hydrogeochemical and geohydraulical processes within the aquifer. For example, the knowledge of raw water quality development within the time helps to work out strategies of water treatment as well as planning finance resources. On the other hand, the effectiveness of planed measurements reducing the infiltration of harmful substances such as nitrate can be checked and optimized by using hydrogeochemical modelling. Thus, within the framework of the InnoNet program funded by Federal Ministry of Economics and Technology, a network of research institutes and water suppliers work in close cooperation developing a planning and management tool particularly oriented on water management problems. The tool involves an innovative material flux model that calculates the hydrogeochemical processes under consideration of the dynamics in agricultural land use. The program integrated graphical data evaluation is aligned on the needs of water suppliers.

scholarly journals Case study to evaluate the influence of the SolarBees and dossage on the water quality of the Rietvlei Dam Water Treatment Plant.

2012 ◽  
Vol 31 (1) ◽  
Author(s):  
S. Booyens ◽  
D. De Vos ◽  
Sandra Barnard ◽  
Leanne Coetzee
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Water Samples ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Raw Water ◽  
Raw Water Quality ◽  
The Difference

The aim of this project was to investigate the influence of the SolarBees and dosage on the water quality at Rietvlei Dam WTP. The difference between the raw and final water samples was less than anticipated due to the drastic improvement in raw water quality of Rietvlei Dam.

Leading the City of Baltimore into the 21st Century: Flexible Treatment Solutions and Integrated Raw Water Management

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
J. L. Manuszak ◽  
M. MacPhee ◽  
S. Liskovich ◽  
L. Feldsher
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Water Supply ◽  
Conceptual Design ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Low Pressure ◽  
Management Tool ◽  
Raw Water ◽  
The City

The City of Baltimore, Maryland is one of many US cities faced with challenges related to increasing potable water demands, diminishing fresh water supplies, and aging infrastructure. To address these challenges, the City recently undertook a $7M study to evaluate water supply and treatment alternatives and develop the conceptual design for a new 120 million gallon per day (MGD) water treatment plant. As part of this study, an innovative raw water management tool was constructed to help model source water availability and predicted water quality based on integration of a new and more challenging surface water supply. A rigorous decision-making approach was then used to screen and select appropriate treatment processes. Short-listed treatment strategies were demonstrated through a year-long pilot study, and process design criteria were collected in order to assess capital and operational costs for the full-scale plant. Ultimately the City chose a treatment scheme that includes low-pressure membrane filtration and post-filter GAC adsorption, allowing for consistent finished water quality irrespective of which raw water supply is being used. The conceptual design includes several progressive concepts, which will: 1) alleviate treatment limitations at the City's existing plants by providing additional pre-clarification facilities at the new plant; and 2) take advantage of site conditions to design and operate the submerged membrane system by gravity-induced siphon, saving the City significant capital and operations and maintenance (O&M) costs. Once completed, the new Fullerton Water Filtration Plant (WFP) will be the largest low-pressure membrane plant in North America, and the largest gravity-siphon design in the world.

Monitoring raw water quality and adjustment of treatment processes – experiences at the wahnbach reservoir

1998 ◽  
Vol 37 (2) ◽  
pp. 43-48 ◽  
Author(s):  
Oluf Hoyer ◽  
Helmut Schell
Keyword(s):  
Water Quality ◽  
Effective Control ◽  
Raw Water ◽  
Titration Method ◽  
Treatment Processes ◽  
On Line ◽  
Raw Water Quality

On-line monitoring of turbidity allows effective control of source and finished water quality. Fundamentals for particle destabilisation and removal are outlined and the application of the charge titration method for optimal online adjustment of the flocculant dosage is presented.

The study of interrelationship between raw water quality parameters, chlorine demand and the formation of disinfection by-products

2009 ◽  
Vol 34 (13-16) ◽  
pp. 806-811 ◽  
Author(s):  
Md. Pauzi Abdullah ◽  
Lim Fang Yee ◽  
Sadia Ata ◽  
Abass Abdullah ◽  
Basar Ishak ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Raw Water ◽  
Chlorine Demand ◽  
Raw Water Quality ◽  
By Products
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