Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available remote Ocena stanu eutrofizacji zbiornika Kozłowa Góra
EN
The use of accelators for the treatment of washing water in waterworks has become increasingly frequent. The study reported in the present paper was carried out in the Waterworks of Dziećkowice (Upper Silesia, Poland). The objective was to investigate the biological effects which were due to the accelator, where the water was treated by alum coagulation (with aluminium sulphate doses ranging between 10 an 20g/m3). Samples of raw water, after the sedimentation tank, and washing water were collected once a week from March till October 1999. Inoculation was carried out on agar at 37 st. C and 20 st. C for 24 and 72 h, respectively. The counts of phytoplankton organisms and the physicochemical parameters of the water were established. As shown by the results of micro- and hydrobiological examinations, alum coagulation in the accelator reduced considerably the numbers of bacterial colonies and plankton organisms in the washing water. And this means that the water from filter washing - after suitable treatment in the accelator - can be reused and feed the technological train.
EN
The treatment train made use of by the Upper Silesian Wa-terworks of Dzieckowice involves activated carbon beds. Inve-stigations were carried out for three filter types of choice, including Chemviron F-300, WD-extra, and Norit 0.8 Supra activated carbon, respectively. Samples were taken at three depths of the bed (top layer, 0.5 m and 1.0 m). Microorganism growth was particularly intensive between March and May. The number of microorganisms varied from one sample to another and was the greatest on the surface of each filter bed. According to the activated carbon type, bacterial counts were the highest in WD-extra samples and the lowest in Norit 0.8 Supra samples, but these differences are negligible. Microscopic examinations revealed the presence of a variety of species. The plant and animal species identified in the investigated filter beds corre-sponded with those detected in the treated water. However, as the number of animal species increased, the number of bacterial
EN
The object under study is the Water Treatment Plant Dziećkowice ( Upper Silesia ).The treatment train includes pre-ozonation as one of the unit processes,so it seemed worthwhile to investigate how the ozone dose affected the count of plankton organisms. Thus, an ozone dose ranging between 0.8 and 1.0 gO3/m3 was able to reduce phytoplankton by about 20%.The efficiency of the pre-ozonation process depended on the number of plankton organisms in untreated water and varied from one species to another.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.