Table 1 Chemical composition and groundwater indicators of the Western Siberian region
From: Colloid stability of iron compounds in groundwater of Western Siberia
Indicator | Units | Value | MPC* | |
|---|---|---|---|---|
North Western Siberia | South Western Siberia | |||
рН | - | 6.0…7.0 | 6.8…7.7 | 6…9 |
Color index | Grad | 30…150 | 10…45 | 20 |
General Iron - Fe(II) + Fe(III) | mg/L | 1.0…25.0 | 0.88…27.0 | 0.3 |
Manganese (II) | mg/L | 0.03…0.75 | 0.10…1.35 | 0.1 |
General hardness | °H | 0.5…6.0 | 4.5…13.0 | 7.0 |
Hydro carbonate - ions | mg/L | 30.0…360.0 | 280.0…800.0 | - |
Silicon (IV) | mg/L | 10.0…28.0 | 4.5…16.0 | 10.0 |
Permanganate index | mgО2/L | 3.0…14.0 | 0.9…3.0 | 5.0 |
Ratio Са2+/Мg2+ | - | 1:1 or 2:1 | 4:1 | - |