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    Wyświetlanie 1-5 z 5
    Tytuł:
    Operating difficulties of small water reservoir located in Wasilkow
    Autorzy:
    Siemieniuk, A.
    Szczykowska, J
    Wiater, J
    Powiązania:
    https://bibliotekanauki.pl/articles/123195.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    small retention reservoirs
    contamination
    biogenic compounds
    trophy
    Opis:
    When considering the issue of the functioning of small water reservoirs, the attempt to assess changes in trophy of small retention reservoir located in Wasilkow, Podlasie, before and after remediation, was carried out. Water samples tests were carried out once a month from April 2007 to March 2008, from April 2009 to March 2010 (before remediation), and from April 2013 to March 2014 (after removal of silt). Prior to works related to the reservoir remediation, a gradual increase in the number of tested contaminants and disturbances in the seasonal occurrence of nitrogen and phosphorus compounds were observed. Advanced eutrophic processes in Wasilków reservoir occur probably due to the supply of large amounts of humic and biogenic substances from the catchment, because a significant percentage of its area is covered by forests and agricultural lands. The development of the trophic status of the reservoir is largely influenced by the amount of phosphorus and total nitrogen supplied to the reservoir; the least affected by chlorophyll “a”. Comparing the analyses performed in 2007/2008 and 2009/2010, a slight, but growing trend of average trophic levels of water in the basin Wasilków was found. Studies conducted in 2013/2014 revealed a significant decrease in the concentrations of all analyzed pollutants, and hence lower TSI values. It can be concluded that the reclamation associated with the removal of sediments brought the expected results.
    Źródło:
    Journal of Ecological Engineering; 2015, 16, 1; 122-126
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Agricultural pollution and water quality in small retention reservoir in Korycin
    Autorzy:
    Szczykowska, J.
    Siemieniuk, A.
    Wiater, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/124505.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    small water retention reservoir
    pollutions
    biogenic compounds
    trophic
    Opis:
    The study aimed at determining the changes in the trophic status of the processes associated with the risk of eutrophication in small retention reservoir in Korycin, characterized by agricultural performance of direct and indirect catchment. The study was conducted using the surface water samples that were collected systematically every month over four hydrological years (2008 to 2014) from three research points. Mean annual concentration of total phosphorus varied from 0.641 mg P/dm3 during research conducted in 2007/2008 to 0.874 mg P/dm3 in 2013/2014 showing an increasing trend from year to year. Taking into account the calculated average values, an upward trend can be seen along with particular years of the study from the annual average value of 1.44 mg N/dm3 determined in the first year to the value of 2.66 mg N/dm3 recorded in the last year of the study. It was observed during the study that in non-flowing parts of Korycin reservoir, plankton developed more abundantly than in the central fragments, where the flow of water is more intensive. A mild growth of phytoplankton in the waters of Korycin reservoir is provided by relatively low concentrations of chlorophyll “a” found during all research periods. Concentrations of chlorophyll “a” in waters of the reservoir were within the range of 4.08 to 5.21 g/dm3. At a Schindler coefficient > 2, this value, based on the Decree of the Minister of the Environment of 2011, should not exceed 7 and therefore waters of the Korycin reservoir during the research can be classified as the first class. Values of the general trophic level (Trophic State Index) during the first three years of the study ranged from 67.15 to 68.65, which enabled to count waters of the reservoir in Korycin to eutrophic ones. In the last year of the analyzes, this coefficient increased to a value of 72.43, classifying its waters as hypertrophic. The largest share in such a situation was expressed by TSI (TP), which ranged from 97.34 to 101.82, always classifying the waters to hypertrophic ones. In contrast, the indicator TSI (TN) ranged from 59.71 to 68.57 and it classified the reservoir waters to eutrophic, while TSI (Chl) to mesotrophic.
    Źródło:
    Journal of Ecological Engineering; 2015, 16, 1; 141-146
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wstępne wyniki badań jakości wody małego zbiornika Michalice na Widawie
    Preliminary results of quality study of water from small Michalice reservoir on Widawa river
    Autorzy:
    Wiatkowski, M
    Powiązania:
    https://bibliotekanauki.pl/articles/400096.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    zbiornik wodny
    jakość wód powierzchniowych
    azot
    fosfor
    Opis:
    W pracy przedstawiono analizę jakości wody małego zbiornika Michalice. Przedstawiono wstępną ocenę jakości wody zbiornika i oceniono jej walory użytkowe. Podstawowe funkcje zbiornika to nawodnienia rolnicze, ochrona przed powodzią i rekreacja, dlatego ważnym zagadnieniem jest jakość wody zbiornika. Scharakteryzowano jakość wody rzeki Widawy pod względem wskaźników fizyko-chemicznych: NO3-, NO2-, NH4+, PO43-, ChZT-Cr, temperatury wody, pH i przewodności elektrolitycznej. Podano podstawowe statystyki opisowe dla badanych wskaźników jakości wody. W okresie badawczym 2005–2006 zbiornik przyczyniał się do obniżenia zawartości azotanów, azotynów fosforanów, przewodności elektrolitycznej i ChZT – Cr w wodzie odpływającej ze zbiornika Michalice (stanowisko St.3) w porównaniu z wodą do niego dopływającą (St.1). W przypadku pozostałych wskaźników zanotowano ich wzrost na odpływie ze zbiornika w porównaniu z dopływem. Stwierdzono, że badane wody nie są wrażliwe na zanieczyszczenie związkami azotu ze źródeł rolniczych i uznano je także za eutroficzne. W celu uzyskania dokładnych informacji na temat stanu czystości wód zbiornika Michalice, jak i rzeki Widawy należy kontynuować monitoring hydrologiczny i badania jakości wody.
    The paper presents an analysis of water quality of the small Michalice reservoir. A preliminary assessment of the reservoir water quality and its usability was made. The quality of water in the reservoir is particularly important as the main functions of the reservoir are agricultural irrigation, recreation and flood protection . The following physico-chemical parameters of the Widawa River were analyzed: NO3-, NO2-, NH4+, PO43-, COD, water temperature, pH and electrolytic conductivity. Main descriptive statistical data were presented for the analyzed water quality indicators. The research results indicate that the reservoir contributed to the reduced concentrations of the following water quality indicators: nitrates, nitrites, phosphates, electrolytic conductivity and COD (in the outflowing water – St.3 in comparison to the water flowing into the reservoir – St.1). In the water flowing out of the Psurów reservoir higher values of the remaining indicators were observed if compared with the inflowing water. It was stated, as well, that analised waters are not vulnerable to nitrogen compounds pollution coming from the agricultural sources and are eutrophic. For purpose obtaining of the précised information about condition of Michalice reservoir water purity as well as river Widawa it becomes to continue the hydrological monitoring and water quality studies.
    Źródło:
    Inżynieria Ekologiczna; 2013, 35; 117-125
    2081-139X
    2392-0629
    Pojawia się w:
    Inżynieria Ekologiczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mściwojów Reservoir – study of a small retention reservoir with an innovative water self-purification system
    Autorzy:
    Dąbrowska, J.
    Kempa, O.
    Markowska, J.
    Sobota, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/123235.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    surface water quality
    eutrophication
    dam reservoir
    phosphorus retention
    Opis:
    The study presents the characteristics of the Mściwojów Reservoir equipped with a unique pre-reservoir structure that supports the process of self-purification of waters. The authors present more than ten years of studies, focusing mainly on the issues of water quality and the concentration of phosphorus, which is considered as the main factor influencing water eutrophication process. Quite a high concentration of phosphates was noted in the outflow from the main reservoir, in spite of a lower concentration of these compounds in the water leaving the pre-reservoir. Basing on the conducted analyses, the catchment of the reservoir was qualified as group 4, being very prone to the movement and supply of material to the reservoir. The negative value of the retention coefficient of phosphorus obtained for the main part of the reservoir points to the existence of an internal source of phosphorus supply to the reservoir. During over 10 years of studies, new directions of the development of the rural areas were determined. Future works should be extended so as to cover all elements of the ecosystem of the reservoir. In a longer term it seems natural to extend the research works to cover the whole catchment of Wierzbiak River.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 7-16
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Symptoms of Water Eutrophication in the Bachmaty Reservoir
    Autorzy:
    Siemieniuk, A.
    Szczykowska, J.
    Wiater, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/123637.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    small retention reservoir
    contaminants
    biogenic compounds
    trophic level
    Opis:
    When analyzing the symptoms of eutrophication and water quality in a small retention reservoir Bachmaty, an attempt to assess changes in its trophic condition before and after modernization, was undertaken. The study upon changes in water trophic level was carried out on a small retention reservoir Bachmaty located in Podlasie region on the Orlanka river in the municipality of Dubicze Cerkiewne. Tests of water samples collected from the surface layer of the coastal zone were performed once a month, and the time of the research was divided into two periods. The first period was conducted since April 2007 to March 2008 and since April 2009 to March 2010. The second research period included the time immediately after the reservoir reclamation, which ended in May 2011. The study was conducted since May 2011 to March 2012 and since April 2013 to March 2014. The trophic level of Bachmaty reservoir was also assessed according to the concentration criteria and based on the trophic status indices (TSI) calculated after Carlson’s as well as Kratzer and Brezonik’s. Reclamation of the reservoir, which consisted mainly in removing the sediments, caused a reduction in all TSI values. Analysing the overall trophic level index, i.e. the average of TSI (TP), TSI (TN), and TSI (Chl), water of the Bachmaty reservoir may be classified as eutrophic in individual years of the research, although a gradual decline in the TSI value could be observed directly after the reservoir modernizing. After testing it was found that the formation of the trophic level of Bachmaty reservoir was largely affected by the amount of total phosphorus supplied to the water. Water quality in the reservoirs, and also the content of phosphorus compounds is largely determined by external supply.
    Źródło:
    Journal of Ecological Engineering; 2015, 16, 4; 89-95
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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