Evaluation of reverse osmosis for improving quality of water utilized in hemodialysis devices (case study: Kerman University of Medical Sciences' hospitals)

2018 ◽  
Vol 131 ◽  
pp. 61-65
Author(s):  
Mohammad Malakootian ◽  
Fariba Mirzaienia ◽  
Zhila Honarmandrad
Keyword(s):  
Reverse Osmosis ◽  
Medical Sciences ◽  
Quality Of Water

scholarly journals The impact of coal ash and slag dump on the quality of surface and ground waters - a case study

2019 ◽  
Vol 84 (5) ◽  
pp. 527-530
Author(s):  
Ivana Cipranic ◽  
Radmila Markovic ◽  
Stefan Djordjievski ◽  
Zoran Stevanovic ◽  
Marija Stevanovic
Keyword(s):  
Water Samples ◽  
Coal Ash ◽  
Negative Influence ◽  
Physical Treatment ◽  
Physical Chemical ◽  
Quality Of Water ◽  
Slag Dump ◽  
The Impact

This paper presents the assessment of the impact of coal ash and slag from the ?Maljevac? dump on the quality of water of Paleski Creek, Montenegro. The obtained results confirm the negative influence of surface and groundwater from the dump on the water from the Paleski Creek. The results obtained by testing of the water samples, collected from Paleski Creek upstream of the dump, indicate that the water is qualified to be used for drinking, after simple physical treatment and disinfection. The results obtained for the water samples collected from the Paleski creek downstream from the dump indicate that the water could be safe for drinking only after the treatment that requires an intensive physical, chemical and biological processing, including some extended treatment.

Contribution of the FPA tasting panel to decision making about drinking water treatment facilities

2007 ◽  
Vol 55 (5) ◽  
pp. 127-135 ◽  
Author(s):  
R. Devesa ◽  
R. Cardeñoso ◽  
L. Matía
Keyword(s):  
Reverse Osmosis ◽  
Pilot Plant ◽  
Profile Analysis ◽  
Drinking Water Treatment ◽  
Feed Water ◽  
Gradual Improvement ◽  
Organoleptic Quality ◽  
Quality Of Water ◽  
Llobregat River

The flavour profile analysis (FPA) panel of Aigües de Barcelona has participated in three engineering projects initiated to improve both the quality of the water supplied and the use of the scarce resources available. The information provided by the panel enables a solid evaluation of the organoleptic quality of the water produced in the facilities, which is very useful in making decisions concerning the development of the projects. The first project refers to the Besòs full scale nanofiltration pilot plant. The study includes characterisation of the organoleptic quality of the water obtained and the behaviour of blends in different proportions with water from the Ter river. Secondly, this article presents the results obtained in El Papiol pilot plant for the reduction of trihalomethanes in water from the Abrera WTP, situated by the Llobregat river. The tasting results indicate that the stripping treatment slightly improves the quality of water, whereas the improvement is more remarkable with carbon filtration. The third project was the reverse osmosis pilot plant installed in the Sant Joan Despí WTP, which also collects water from the Llobregat river. A gradual improvement of the water treated was clearly observed when increasing amounts of reverse osmosis treated water were added. Some trends were also observed according to the characteristics of the feed water to the reverse osmosis facilities.

Modeling of eutrophication and strategies for improvement of water quality in reservoirs

2016 ◽  
Vol 74 (6) ◽  
pp. 1376-1385 ◽  
Author(s):  
Mojtaba Shourian ◽  
Ali Moridi ◽  
Mohammad Kaveh
Keyword(s):  
Water Quality ◽  
Thermal Regime ◽  
Thermal Stratification ◽  
Present Situation ◽  
The State ◽  
Nitrogen Loads ◽  
Quality Of Water ◽  
Pollution Loads

The purpose of this study is to survey the thermal regime and eutrophication states in Ilam reservoir in Iran as the case study. For this purpose and to find solutions for improving the water's quality in the reservoir, two general strategies for reducing the entering pollution loads and water depletions from the reservoir's outlets were analyzed by use of the CE-QUAL-W2 model. Results of the simulation of the present situation show the existence of thermal stratification during summer, which results in the qualitative stratification in the reservoir. According to the qualitative criteria, the Ilam reservoir's state is between mesotrophic and eutrophic. Results of the scenarios of reduction of the nutrients show that in the scenario of 50% reduction of the phosphorus and nitrogen loads into the reservoir, the state of the reservoir would recover from eutrophic to semi-eutrophic. Also, release of water from the reservoir during September, October and November would cause the restoration of the quality of water in the reservoir. To avoid the occurrence of critical eutrophication in the reservoir, reducing the ponding time in the reservoir by fast depletion, preventing entrance of the upstream villages' sewage and agricultural drained waters, which are sources of nitrate and phosphate contamination into the rivers, and also management of the usage of agricultural fertilizers have been suggested.

scholarly journals Novel Integrated Ultrafiltration and Reverse Osmosis System in High Quality Drinking water Production

2020 ◽  
Vol 36 (6) ◽  
pp. 1243-1247
Author(s):  
Vinod Kumar S ◽  
R Baskaran
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
Concentration Polarization ◽  
Integrated System ◽  
Quality Analysis ◽  
Water Contaminants ◽  
Quality Of Water ◽  
Ultra Filtration ◽  
Drinking Water Production

Modernization in water technology plays a major role in ensuring a clean, safe, and feasible supply of drinking water. Enhancing performance in terms of price and quality, flow ability of the plant, sustainable development; integrated membrane processes have been developed. The most crucial issues found in RO applications such as concentration polarization and membranes fouling are reduced by using this integration of membranes. Conventional reverse osmosis filtration has sand and coke filters as pre filters. In this work these pre filters have been replaced by ultra-filtration which ensures undoubtedly the best quality of water despite the quality of feed with low power consumption and chemicals. These integrated systems are the better thing for complete elimination of microorganism and water contaminants in their category of selection. The present work also contributes on water quality analysis for brackish water using both the above desalination membrane technology. This integrated system can be remotely monitored and self-adapted model-based control.

scholarly journals Ayurvedic Management of Kitibha Kushta w.r.t. Guttate Psoriasis - A Single Case Study

2020 ◽  
Vol 11 (1) ◽  
pp. 136-142
Author(s):  
Vishakha Shashikant Bindalkar ◽  
Vinod Ade ◽  
Saurabh Deshmukh
Keyword(s):  
Quality Of Life ◽  
Single Case ◽  
Life Time ◽  
Treatment Modalities ◽  
Single Case Study ◽  
Upper Limbs ◽  
Medical Sciences ◽  
Guttate Psoriasis

Guttate psoriasis is a type of psoriasis that presents over the upper trunk and proximal extremities, it is small (0.5 to 1.5 cm in diameter) lesions; it is found frequently in young adults. As per its clinical features we will compare with Kitibha Kushta. The life time prevalence is approximately 2% of individuals with psoriasis. Many treatment modalities have been adopted in medical sciences, but it is having various side effects. So here in this case by using Shodhan, Shaman and Bahirparimarjan chikitsa we successfully treated the case of Kitibha kushtha. It is a single case study, A 22 year male patient approached to Kayachikitsa OPD having complaint of multiple small red lesions over the chest, abdomen, and back region also on both upper limbs and Itching over them since 2 years.The patient was treated with Shodhan and Shaman Chikitsa. Patient got 90% result in chief and associated complaints and during and after the completion of therapy there is improvement in the quality of life of the patient. After Shodhana and Shaman Chikitsa patient got satisfactory relief in symptoms.

Impact of conventional retting of jute (Corchorus spp.) on the environmental quality of water: a case study

2019 ◽  
Vol 191 (7) ◽  
Author(s):  
B. Majumdar ◽  
Lipi Chattopadhyay ◽  
Shrestha Barai ◽  
A. R. Saha ◽  
S. Sarkar ◽  
...  
Keyword(s):  
Environmental Quality ◽  
Quality Of Water

scholarly journals Safeguarding Drinking Water: Use and Quality of Water, Case Study of Taranto Province

2014 ◽  
Vol 89 ◽  
pp. 232-238 ◽  
Author(s):  
A. Calabrese ◽  
C. Massarelli ◽  
V.F. Uricchio ◽  
C. Campanale
Keyword(s):  
Drinking Water ◽  
Water Use ◽  
Quality Of Water

scholarly journals A framework to diagnose factors influencing proenvironmental behaviors in water-sensitive urban design

2018 ◽  
Vol 115 (33) ◽  
pp. E7690-E7699 ◽  
Author(s):  
Jacki Schirmer ◽  
Fiona Dyer
Keyword(s):  
Water Quality ◽  
Urban Design ◽  
Life Stage ◽  
Human Behaviors ◽  
Factors Influencing ◽  
Quality Of Water ◽  
Water Sensitive Urban Design ◽  
Improve Water Quality

The ongoing challenge of maintaining and improving the quality of water that leaves urban stormwater systems is often addressed using technical rather than social solutions. The need for investment in often expensive water infrastructure can be reduced through better investing in promoting human behaviors that protect water quality as part of water-sensitive urban design (WSUD) initiatives. Successfully achieving this requires understanding factors that influence adoption of proenvironmental behaviors. We review past studies examining this topic and identify that factors influencing adoption of proenvironmental behaviors relevant to WSUD commonly fall into four domains: proenvironmental values and norms, awareness and knowledge of environmental problems and the actions that can address them, proximity and place-based identity, and life-stage and lifestyle factors. We propose the VAIL (values, awareness, identify, lifestyle) framework, based on these four domains and able to be contextualized to specific water-quality problems and individual communities, to assist in diagnosing factors influencing adoption of proenvironmental behaviors. We demonstrate the applicability of the framework in a case study examining adoption of gardening practices that support water quality in Canberra, Australia. We developed 22 locally relevant VAIL indicators and surveyed 3,334 residents to understand engagement in four water-friendly gardening behaviors that help improve water quality in local lakes. In regression modeling, the indicators explained a significant amount of variance in these behaviors and suggested avenues for supporting greater adoption of these behaviors. Predictor variables across all four VAIL domains were significant, highlighting the importance of a multidomain framework.

scholarly journals Water Management of River Beaches—A Portuguese Case Study

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 152
Author(s):  
Maria Oliveira ◽  
Margarida Antunes ◽  
Ana Carvalho
Keyword(s):  
Water Quality ◽  
Physicochemical Parameters ◽  
Continuous Monitoring ◽  
Water Quality Management ◽  
Quality Of Water ◽  
Microbiological Parameters ◽  
Awareness Raising ◽  
The Town

The quality of water is crucial for the qualification of river beaches. The Cávado River watershed (Northern Portugal) contains five river beaches with a regular and specific mandatory monitorization. The main subject of this research is the evaluation of spatial and temporal water microbiological and physicochemical parameters to assess the water quality improvement and consequently watershed management. The results of monitoring surface water, considering microbiological parameters from the five river beaches (2015/19), and physicochemical parameters from three water points along the Cávado River (2018/19) were considered. The river beaches located upstream of the town of Braga has an “excellent” and “good” quality, while the river beach located downstream shows a lower water quality. The physicochemical water results indicated that there is a progressive degradation of water quality from upstream to downstream of the river, which is associated with the influence of domestic and industrial activities. To improve water quality, continuous monitoring will be necessary, with the implementation of adequate awareness-raising programs and strategic water quality management by the population and local agents.

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