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the conservation of biodiversity. Water quality parameters are divided into categories of physical, chemical, and biological properties, affecting the natural ecological systems and water used by humans ( Wetzel 2001 , Boyd 2020 ). These parameters

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This article assesses the current challenges to water management in the Tisza River basin. We overview the environmental characteristics of the Tisza river basin and consider the economic setting within which water policy making must be conducted, before characterizing the principal water pollution sources in the region and assessing water quality monitoring data. We then compare the current status of the region’s waters to the normative goals for water quality improvement specified in the European Union Water Framework Directive. Lastly, we assess the future outlook for water quality in the Tisza basin, given the current status of water quality in the region and the prospects for successfully implementing water policy objectives.

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. , Tanos P. , Trásy B. , Várbíró G. Developments in water quality monitoring and management in large river catchments using the Danube River as an example , Environmental Science & Policy , Vol. 64 , 2016 , pp. 141 – 154

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Disposal of used geothermal waters in Hungary often means temporary storage in reservoir lakes to reduce temperature and improve water quality. In this study, the physical and chemical properties and changes in the bacterial community structure of a reservoir lake system in southeast region of Hungary were monitored and compared through 2 years, respectively. The values of biological oxygen demand, concentrations of ammonium ion, total inorganic nitrogen, total phosphorous, and total phenol decreased, whereas oxygen saturation, total organic nitrogen, pH, and conductivity increased during the storage period. Bacterial community structure of water and sediment samples was compared by denaturing gradient gel electrophoresis (DGGE) following the amplification of the 16S rRNA gene. According to the DGGE patterns, greater seasonal than spatial differences of bacterial communities were revealed in both water and sediment of the lakes. Representatives of the genera Arthrospira and Anabaenopsis (cyanobacteria) were identified as permanent and dominant members of the bacterial communities.

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] Berndtsson J. C. Storm-water quality of first flush urban runoff in relation to different traffic characteristics , Urban Water J , Vol. 11 , No. 4 , 2014 , pp. 284 – 296

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117 Rhoades, J. D. 1987: Use of saline water irrigation. Water Quality Bull. , 12 , 14-22. Use of saline water irrigation Water

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Pollack Periodica
Authors:
Zuzana Sabová
,
Zuzana Németová
,
Tatiana Kaletová
, and
Silvia Kohnová

these changes can lead to decreasing water quality [ 13 ] and to reinforcing global warming [ 14 ]. The aim of the study lies in the evaluation and assessment the current hydrotechnical and geotechnical condition of the Ratka water reservoir, together

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legnagyobb árvizének tükrében Hidrológiai Közlöny 80/ 5–6 285 287 (Water quality changes in the wake of the centuries biggest flooding

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The suitability of benthic diatoms in the biological monitoring program of the water quality of Lake Velence was tested. Diatom indices were calculated with the aid of the software Omnidia based on reed periphyton samples collected between 1988 and 1990, and 1999 to 2004. We have pointed out which indices are appropriate for indicating the water quality changes of Lake Velence. The correlation between the indices IBD, IPS, IDG, and the total nitrogen, total phosphorus content of the water and chlorophyll-a content of the periphyton was calculated. Significant negative correlation was found between the indices and the total phosphorus content of the water. Moreover, we concluded that the chlorophyll-a content of the periphyton related to surface area can also provide information about the water quality. Based on these results the index IBD seems to be the most suitable for the water quality analysis of Lake Velence. Recommendations are provided here concerning the ecological status classification of Lake Velence based on epiphytic diatoms; unaccounted questions and future assignments are also outlined in connection with this.

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Abstract  

The association properties of Am with aquatic humic substances in a 0.01M NaClO4 solution at pH 6-8 were studied on the basis of molecular size distribution. Ten humic substances isolated from river water with different water quality (pH 3.9-8.0 and dissolved organic carbon (DOC) concentration of 2-40 mg/l) were used for comparing their effects on the association of Am. The molecular size distribution of Am in the presence of humic substances from an uncolored river water (DOC 2 mg/l) was different from that at the experimental systems using humic substances from brownish and high DOC (14-40 mg/l) river waters.

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