water quality Articles
-
Water quality for irrigation and drinking water use of Aflaj in Oman
The Sultanate of Oman is an arid country with scarce water resources mainly consisting of groundwater. Aflaj are artificial canals constructed centuries ago to transfer horizontally the groundwater to a location at the surface. The water quality of these Aflaj is a very important factor to be considered for healthy and safe use of this water. This paper aimed to study the characteristics of the ...
-
Water quality dependence on the depth of the vadose zone in SAT-simulated soil columns
ABSTRACTThree soil aquifer treatment (SAT) columns were operated for five months to investigate the dependence of the treated water quality upon the depth of unsaturated vadose zone in terms of its organics, nitrogen and phosphorus contents. It was found that DOC removal was independent of the unsaturated vadose zone depth except during the initial flooding period when the effluent was injected ...
-
Impact of artificial monolayer application on stored water quality at the air–water interface
Evaporation mitigation has the potential to significantly improve water use efficiency, with repeat applications of artificial monolayer formulations the most cost-effective strategy for large water storages. Field investigations of the impact of artificial monolayers on water quality have been limited by wind and wave turbulence, and beaching. Two suspended covers differing in permeability ...
-
Impact of artificial monolayer application on stored water quality at the air–water interface
Evaporation mitigation has the potential to significantly improve water use efficiency, with repeat applications of artificial monolayer formulations the most cost-effective strategy for large water storages. Field investigations of the impact of artificial monolayers on water quality have been limited by wind and wave turbulence, and beaching. Two suspended covers differing in permeability ...
-
Water quality management of aquifer recharge using advanced tools
Managed aquifer recharge (MAR) with recycled water or other alternative resources is one of the most rapidly growing techniques that is viewed as a necessity in water-short areas. In order to better control health and environmental effects of MAR, this paper presents two case studies demonstrating how to improve water quality, enable reliable tracing of injected water and better control and ...
-
Evaluating farmers' preferences for wastewater: quantity and quality aspects
This paper employs the Contingent Valuation (CV) method to investigate farmers' willingness to adopt a new water resource, namely treated wastewater, and to estimate their Willingness To Pay (WTP) for varying quantities and qualities of treated wastewater for irrigation. A pilot CV study is undertaken with 97 farmers located around Cyprus' Akrotiri aquifer, a common-pool water resource with ...
-
Aquifer recharge with reclaimed water: life-cycle assessment of hybrid concepts for non-potable reuse
Aquifer recharge with reclaimed water is a promising means to store and supply on demand reclaimed water of high quality for further non-potable reuse. The reuse applications may include indirect agricultural or landscape irrigation, saltwater intrusion barriers, subsidence mitigation or aquifer replenishment. As an alternative to high-pressure or double-membrane systems, hybrid schemes ...
-
Modelling nitrate pollution of groundwater using artificial neural network and genetic algorithm in an arid zone
This paper presents a hybrid approach to analyse nitrate pollution based on an Artificial Neural Network (ANN) and Genetic Algorithm (GA). This makes it possible to compute the amount of nitrate in different time-scales easily without employment of confusing complicated mathematical equations. Generally, the results of the current research could be useful in management purposes and also for ...
-
Managed aquifer recharge with reclaimed water: approaches to a European guidance framework
Managed Aquifer Recharge (MAR) with reclaimed water plays a particular role in water stress mitigation, due to both the large potential benefits achieved in terms of sustainable water resources management as well as the complexity of the planning and implementation. This paper focuses on the role of policy in establishing water quality related legal frameworks that are crucial for MAR ...
-
Bottling water, greening farmers: the socio-technical and managerial construction of a 'dispositif' for underground water quality protection
This paper proposes the description and analysis of the dynamics of an innovation process, which, over ten years ago, enabled a mineral water company to start protecting its underground water and to overcome a classical negative externality problem of no point-source nitrogen pollution. Based on methodological reflection and discussion of the dynamics of socio-technical arrangement in the ...
-
Comparative assessment of managed aquifer recharge versus constructed wetlands in managing chemical and microbial risks during wastewater reuse: a review
Constructed wetlands (CWs) and managed aquifer recharge (MAR) represent commonly used natural treatment systems for reclamation and reuse of wastewater. However, each of these technologies have some limitations with respect to removal of different contaminants. Combining these two technologies into a hybrid CW-MAR system will lead to synergy in terms of both water quality and costs. This ...
-
Tecta B16 Success Story - University of Arizona Water Quality Center - Case Study
The Water Quality Center (WQC) Lab is located in the Fleischmann Building of the Environmental Research Laboratory, an off-campus University of Arizona facility. The Lab focuses on water quality and is equipped to perform state-of-the-art chemical and biological analyses. Biological analyses include bacterial and viral pathogens and indicator organisms. The Lab also performs tests on other ...
-
Aquifers and hyporheic zones: Towards an ecological understanding of groundwater
Ecological constraints in subsurface environments relate directly to groundwater flow, hydraulic conductivity, interstitial biogeochemistry, pore size, and hydrological linkages to adjacent aquifers and surface ecosystems. Groundwater ecology has evolved from a science describing the unique subterranean biota to its current form emphasising multidisciplinary studies that integrate hydrogeology ...
-
Assessment of water quality in Little Vermillion River watershed using principal component and nearest neighbor analyses
Because of increased use of fertilizers to feed the increasing global population, the nutrient loads in surface and subsurface water have increased substantially in the last few decades. Many studies have been conducted to investigate the factors affecting nitrate load in surface and subsurface flow. The objective of this study is to investigate the relationship between the various factors ...
-
Georgetown Water Treatment Plant
Georgetown, in the Town of Halton Hills, is supplied by nine groundwater wells located in four well fields. The Region of Halton has received many colored water complaints from customers over the past several years. In order to ensure high quality water to the customers in Georgetown, the Region of Halton retained XCG Consultants to complete two projects. The projects included a study to identify ...
-
Interconnectivity between the Superficial Aquifer and the Deep Confined Aquifers of the Gnangara Mound, Western Australia
Perth groundwater resources are obtained from three major aquifers that occur beneath the Perth metropolitan area: the Superficial aquifer, Leederville aquifer and Yarragadee aquifer. Each aquifer has a unique seasonal water level pattern controlled by soils, geomorphology and geology. Landuse is mainly responsible for variations in recharge; however, the hydraulic properties control aquifer ...
-
Interconnectivity between the Superficial Aquifer and the Deep Confined Aquifers of the Gnangara Mound, Western Australia
Perth groundwater resources are obtained from three major aquifers that occur beneath the Perth metropolitan area: the Superficial aquifer, Leederville aquifer and Yarragadee aquifer. Each aquifer has a unique seasonal water level pattern controlled by soils, geomorphology and geology. Landuse is mainly responsible for variations in recharge; however, the hydraulic properties control aquifer ...
-
Computational benefits using artificial intelligent methodologies for the solution of an environmental design problem: saltwater intrusion
Artificial Neural Networks (ANNs) comprise a powerful tool to approximate the complicated behavior and response of physical systems allowing considerable reduction in computation time during time-consuming optimization runs. In this work, a Radial Basis Function Artificial Neural Network (RBFN) is combined with a Differential Evolution (DE) algorithm to solve a water resources management problem, ...
-
Integrated local water supply plan
Client: City of Wichita, Kan. Completion Date: June 2001 Services Provided Water supply planning Evaluation of alternatives Cost estimating Economic comparison Environmental studies (NEPA) Program management Hydrogeologic engineering Water quality monitoring Operations assistance/monitoring Design criteria development Treatment pilot testing Water source optimization ...
-
Validation of two applied methods of groundwater vulnerability mapping: application to the coastal aquifer system of Southern Sfax (Tunisia)
The coastal aquifers system of Sfax Agareb Chaffar Mahres (Southern Sfax) located in the central east of Tunisia is well known for population growth and industrial development. These industrial and agricultural developments have led to the degradation of water quality. In this study, DRASTIC and GALDIT models were integrated with geographical information system (GIS) tools, in order to assess ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you