Iron equivalent (mg/I) = 1 x Fe inden (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
3.0 mg/I 6 m/h
Required filtering surface (m2) = Flow rate (m3/h) / Filtration velocity (m/h)
Birm capacity: 1,4 gFe/I
Backwash: 25-30 m/h
Water pH-range: 6,8 - 9,0
The solve oxigene index has to be 15% of the iron index.
The free chlorid index had to be lower than 0,5 mg/I.
The sulphurhydrogene has to be removed before the filter.
BIRM Filled Iron Removal Water Systems:
Type of Device/Model
|
Connection Size
|
Flow
|
Resin liter
|
Backwash flow rate
|
Unit size
|
Weight
|
EconomySoft 1054BT
|
1"
|
0,5-1 m3/h
|
43 liter
|
1,5 m3/h
|
1600xØ300 mm
|
51 kg
|
EconomySoft 1354BT
|
1"
|
0,8-1,6 m3/h
|
71 liter
|
2,4 m3/h
|
1610xØ340 mm
|
84 kg
|
EconomySoft 1465BT
|
1"
|
1-2 m3/h
|
85 liter
|
3 m3/h
|
1890xØ370 mm
|
93 kg
|
EconomySoft 1665BT
|
1"
|
1,3-2,6 m3/h
|
114 liter
|
3,9 m3/h
|
1890xØ420 mm
|
126 kg
|
EconomySoft 1865BT
|
1"
|
1,8-3,6 m3/h
|
141 liter
|
5,4 m3/h
|
1940xØ490 mm
|
166 kg
|
EconomySoft 2162BT
|
2"
|
2,4-4,4 m3/h
|
198 liter
|
6,6 m3/h
|
1980xØ530 mm
|
208 kg
|
EconomySoft 2472BT
|
2"
|
2,8-5,6 m3/h
|
255 liter
|
8,4 m3/h
|
2170xØ600 mm
|
281 kg
|
EconomySoft 3072BT
|
2"
|
4,4-8,8 m3/h
|
397 liter
|
13,2 m3/h
|
2490xØ770 mm
|
481 kg
|
EconomySoft 3672BT
|
2"
|
6,4-12,8 m3/h
|
566 liter
|
18 m3/h
|
2500xØ940 mm
|
660 kg
|