Wyniki wyszukiwania - BazTech

1

Nowy most przez Zalew Zegrzyński w Zegrzu

Jaworski A., Frączak K.

Przegląd Budowlany

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2003

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R. 74, nr 12

28-33

2

Problemy eksploatacyjne stopnia wodnego Dębe

Zieliński J.

Materiały Budowlane

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2003

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nr 10

83-84

3

Jakość wody w Zalewie Zegrzyńskim jako surowca do produkcji wody pitnej dla Warszawy

Wąsowski J., Rypina A.

Gospodarka Wodna

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2002

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Nr 3

113-116

PL

Przedstawiono charakterystykę i trendy zmian jakości wody ujmowanej z Zalewu Zegrzyńskiego oparte na wynikach analiz fizyczno-chemicznych i biologicznych wykonanych w latach 1992-2000. W analizie statystycznej wyników badań uwzględniono wartości liczbowe 50 wskaźników jakości wody. Stwierdzono, że ujmowana woda ma niską jakość jako źródło zaopatrzenia w wodę pitną zarówno w świetle normatywów polskich, jak i Unii Europejskiej.

EN

The paper presents characteristic and trends of changes in the quality of surface water drawn from the Zalew Zegrzyriski (Zegrzyriski Bay) based on results of physical, chemical and biological analyses carried out in the years 1992-2000. In the statistical analysis of results the values od 50 indicess of water quality have been taken into consideration. The Authors state that in the light of Polish as well as of European Union normatives the water taken from the bay is as a source of drinking water supply of very poor quality.

4

Zastosowanie flotacji ciśnieniowej do usprawniania koagulacji wody z Zalewu Zegrzyńskiego

Wąsowski J., Kulesza M.

Ochrona Środowiska

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1999

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nr 4

57-60

EN

Optimization of Lacustrine Water Treatment by Including Dissolved Air Flotation into the Treatment Train The technological studies reported in this paper were carried out at the pilot station of the Northern Water Treatment Plant in Wieliszew near Warsaw in the time span of 1996-1997. Water for municipal supply is taken in from the nearby lake Zalew Zegrzynski. The primary objective of the study was to investigate how the inclusion of dissolved air flotation into the treatment train might upgrade the efficiency of coagulation and, consequently, of the treatment process. Thus, coagulation ww carried out in a two-stage (1[0] and 11[0]) system involving dissolved air flotation and a pulsator, respectively. Another objective was to choose the most effective flocculant type and dose from the three items tested: Alz(S04)3, Fe2(S04)3, and mixed coagulant. The best treatment effects were obtained when use was made of a two-stage coagulation process with DAFin J°, at tlie following proportion of the optimum flocculant dose: 70% at I[0] and 30% at II[0]. The process designed via the above route provided favourable conditions for the operation of rapid sand filters and yielded water of good quality before adsorption on GAC beds.

5

Kierunki rozwoju technologii uzdatniania wody z Zalewu Zegrzyńskiego w Zakładzie Wodociągu Północnego

Sroka M., Kulesza M.

Ochrona Środowiska

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1999

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nr 4

69-72

EN

Waterworks are to supply the users with quality water in quantities adequate for their needs. To achieve this goal it is necessary to develop new treatment technologies or modify (more or less) those used so far, because the pollution level in the recipients continues to increase, and so do the quality standards for potable water. Making use of the data sets provided by the Northern Waterworks, the quality of the water supplied to the city network, and the efficiency of the treatment train were assessed. The results obtained showed that the treatment train needed improvement (especially at the stage of disinfection) in order to reduce THM precursors in the course of the treatment process and to minimize the potential of THM formation in the water. Thus, it is postulated that (1) the treatment train should be extended by the inclusion of secondary ozonation and adsorption on GAC beds, and (2) chlorine dioxide should be substituted for gaseous chlorine which has been used so far for water disinfection.

6

Refleksje na tle sportowego i rekreacyjnego korzystania z wód stopnia piętrzącego Dębe na Narwii i Bugu

Kocot J.

Gospodarka Wodna

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1999

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Nr 3

111-113

PL

Na kanwie obchodów 25-lecia windsurfingu w polsce autor snuje refleksje o sportach wodnych i rekreacji na Zalewie Zegrzyńskicm, akcentując fakt, jak trafna była decyzja o budowie stopnia Dębe.

EN

On the occasion of celebration of 25 years of windsurfing practice i Poland the Author spins out reflections on water games and recreational activities on the Zegrzyński Zalew and accentuates the fact the decision on building the stage of fall Dębe was very right.