- Tytuł:
-
Wpływ procesów biochemicznych i substancji humusowych na stężenie związków wapnia i magnezu w wodach
On the contribution of biochemical processes and humic substances to calcium and magnesium concentrations in water courses - Autorzy:
-
Kolanek, A.
Kowalski, T. - Powiązania:
- https://bibliotekanauki.pl/articles/237552.pdf
- Data publikacji:
- 2002
- Wydawca:
- Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
- Tematy:
-
wody powierzchniowe
zanieczyszczenia wód
związki wapnia
związki magnezu
utlenianie zanieczyszczeń
utlenianie biochemiczne
substancje humusowe
biokoagulacja - Opis:
- The results of laboratory tests showed that biochemical oxidation, as well as concomitant biocoagulation phenomena, brought about a change of the calcium and magnesium concentration in the water. This led to the establishment of a new calcium-magnesium equilibrium in the humic substances, which were present in the water. As a result, calcium concentration in the investigated water samples underwent some variations (but not substantial changes). The said processes exerted an indirect effect on the concentration of magnesium. When following addition of a sewage portion the value of the Ca/Mg molar ratio fell below that of the Ca-Mg equilibrium in the humic substances, the concentration of magnesium decreased in the course of biochemical degradation. When the Ca/Mg ratio value exceeded the Ca-Mg equilibrium value, magnesium concentration increased. The decrement or increment of magnesium was BOD5-dependent and averaged 0.045 val/gO2. Statistical analysis of the relationship between calcium and magnesium concentration variations for 8 rivers and 24 cross-sections substantiated the results of laboratory tests. Over 92% of instances showed a positive annual [Mg] = f([Ca]/[Mg]) relation with a coefficient of determination greater than 0.6. A positive annual [Ca] = f([Ca]/[Mg]) relation was detected in 6% of instances.
- Źródło:
-
Ochrona Środowiska; 2002, 1; 9-12
1230-6169 - Pojawia się w:
- Ochrona Środowiska
- Dostawca treści:
- Biblioteka Nauki
Artykuł