Iron equivalent (mg/I) = 1 x Fe index (mg/I) + 2 x Mn index (mg/I)
Determination of the Filtration velocity according to iron equivalent:
Iron equivalent Filtration Velocity
<0.2 mg/I 18 m/h
0.5 mg/I 15 m/h
1.0 mg/I 12 m/h
1.5 mg/I 10 m/h
2.0 mg/I 8 m/h
Required filtering surface (m2) = Flow rate (m3/h) / Filtration velocity (m/h)
Important working conditions of Green Sand:
Backwash: 30-35 m/h
Water pH-range: 6,2 - 8,5
Bed depth: 900 mm
Free volume: min. half of the bed depth
The ongoing water shouldn't contain oil or poliphosphats,
Solution of regeneration: max. 2,5 - 3,5 g KMnO4/ I water of KMnO4 solution tank
KMnO4 solution: 10°C water 30g KMnO4 / liter H2O
Greensand Filled Iron and Manganese Removal Water Ssytems Specifications:
Type of Device/Model
|
Connection Size
|
Flow
|
Resin liter
|
Backwash flow rate
|
Unit size
|
Weight
|
EconomySoft 1054GT
|
1"
|
0,5-1 m3/h
|
43 liter
|
1,6 m3/h
|
1600xØ300 mm
|
90 kg
|
EconomySoft 1354GT
|
1"
|
0,8-1,6 m3/h
|
71 liter
|
2,6 m3/h
|
1610xØ340 mm
|
146 kg
|
EconomySoft 1465GT
|
1"
|
1-2 m3/h
|
85 liter
|
3,2 m3/h
|
1890xØ370 mm
|
168 kg
|
EconomySoft 1665GT
|
1"
|
1,3-2,6 m3/h
|
114 liter
|
4,2 m3/h
|
1890xØ420 mm
|
226 kg
|
EconomySoft 1865GT
|
1"
|
1,8-3,6 m3/h
|
141 liter
|
5,8 m3/h
|
1940xØ490 mm
|
292 kg
|
EconomySoft 2162GT
|
2"
|
2,4-4,4 m3/h
|
198 liter
|
7,4 m3/h
|
1980xØ530 mm
|
377 kg
|
EconomySoft 2472GT
|
2"
|
2,8-5,6 m3/h
|
255 liter
|
9,6 m3/h
|
2170xØ600 mm
|
494 kg
|
EconomySoft 3072GT
|
2"
|
4,4-8,8 m3/h
|
397 liter
|
15,1 m3/h
|
2490xØ770 mm
|
812 kg
|
EconomySoft 3672GT
|
2"
|
6,4-12,8 m3/h
|
566 liter
|
20,4 m3/h
|
2500xØ940 mm
|
1132 kg
|