Results 1 - 10 of 5588
Results 1 - 10 of 5588. Search took: 0.029 seconds
|Sort by: date | relevance|
[en] There is a keen awareness of the effects of water quality on human health and behaviour in developing countries arising from well documented cases which can be found in the literature. Also in Nigeria there are various concerns about incidents of toxic waste disposal, groundwater pollution through oil spillages, waste disposal practices by agricultural, domestic and industrial activities which affect the domestic water supplies and the environment. The aims of this paper are to highlight the role of water quality in human health; provide a framework for water related health assessment, present results of case studies and recommend appropriate strategies to safeguard human health from contaminated water sources. Major health problems, other than those due to micro-biological contamination of water sources, such as cholera and typhoid, have not been reported or linked to water supplies in Nigeria. Yet there are symptoms of and growing incidences of various diseases, such as psychopathic and neurological disorders which have been linked to contaminated water supplies in developed countries. The major, minor and trace concentrations of elements in water supplies in Nigeria are usually determined in the ppm range whereas most trace elements are hazardous to human health in the ppb or μg/l levels. The reason for this state of affairs is that the instrumentation required for determination of elemental concentrations at the ppb level is not readily available to researchers. Most reports on water quality do not provide any links to the major health problems which have been demonstrated elsewhere as responsible for major pathologic and neurologic disorders, including outright fatalities. Recent studies in Europe and Japan link several diseases, including kidney failure, mood disturbance and other neurologic disorders, heart, liver and kidney damage including death from eating poisonous fish caught in polluted waters, to contamination of water supplies by heavy metals in trace concentrations. Most of the ailments, including mood disturbances and psychological disorders, are reportedly on the increase in most urban and industrialized areas of Nigeria. Perhaps a study should be conducted among the population in order to relate the pattern of water pollution related diseases to health factors in Nigeria
[en] The LIFE ALCHEMIA project (LIFE16 ENV/ES/000437) faces one of the current challenges in the treatment of water for human consumption, such as the presence of natural radioactivity. Currently, there is a considerable lack of knowledge on the part of the actors involved in water management and it can be stated that, despite the legislation in force (Directive 2013/51/Euratom and Royal Decree 140/2003), radioactivity is not a parameter that is being systematically monitored at European level.
[en] In the northwest region of Tenerife Island (Canary Islands, Spain), water supply comes mainly from volcanic galleries and aquifers. These water resources have high concentrations of dissolved salts due to volcanic singularities and the intensive groundwater exploitation (Custodio et al., 2016). In the particular case of Hoya del Cedro gallery, located at 1,365 meters above sea level in the municipality of Icod de los Vinos, fluoride content is especially significant, with concentrations higher than 10 mg F - /L.
[en] The increasing demand for good quality water to meet human consumption and economic development needs led to a request to initiate a TC project aimed at evaluating the potential of La Digue aquifer
[en] Among environmental management actions, water management should be based on the guarantee of its availability and quality, its efficient management, the enhancement of regeneration and reuse formulas, in the creation of new resources, in the modernization of water networks, and in the incorporation of new technologies into productive processes. Targets should be set to promote savings and improve efficiency in water use, and technology transfer to the pipeline sector and the use of alternative water resources is necessary,- In short, sustainable and environmentally friendly water networks must be built.
[en] The Chair Catedra FACSA de Innovacion en el Ciclo Integral del Agua de la Universitat Jaume I is an association between a private company, FACSA, and a university, Universitat Jaume I (UJI). The Chair promotes research, innovation and exchange of knowledge in the full water cycle. It was born in 2015 as a link between research groups, teachers and students of the UJI and the different fields of study related to the full water cycle and has tried to guide and support their study and knowledge among the university community. Therefore, the first grants were convoked three years ago and different Degrees, Masters and PhD thesis have been awarded during three editions. Moreover, different courses have been organized focussing on catchment and treatment of drinking water, treatment of wastewater and construction of waste water treatment plants.
[en] To address the legacy effects of human activity on water quality, it is helpful to understand how land managers make decisions that directly impact legacy sources of pollutantion generated by previous generations, as opposed to current practices. Using data from an economic field experiment, we examine the effect of information about the cause and relative quantity of streambank erosion on rural landowners’ willingness to invest in stream restoration initiatives. Data from the field is supplemented with data from laboratory sessions in which students are presented with similar decision scenarios. We find that landowners assigned to legacy sediment sites characterized by high erosion rates relative to others in the community increased investment levels by 29%–40% of their budget in comparison to the control, with similar results observed among students. Our results suggest that informational outreach targeted to pollution hot spots, including those created by legacy sources, would significantly increase investments in mitigation efforts that improve water quality. (paper)
[en] The development of a water quality model (WQM) with EPANET is a complex task that involves a multitude of factors due to the fact that, to the initial requirement of having a hydraulic model correctly calibrated (AWWA, 2017), which will be the base for the construction of the water quality model, is added the need of having all the elements of the system properly modelled from the quality point of view, necessary in order to obtain accurate and adequate simulation results.