- The precipitates in the pipe network promote bacterial accumulation which can reduce significantly the microbiological quality of water. Since it has so many undesirable properties, Greensand filled iron and manganese removal is an important phase of water treatment.
Dissolved iron and manganese in the water which affects the tastes of food and beverages, and can contribute to the blockage of pipes, aesthetically disturbing and may cause many other undesirable problems. The precipitates in the pipe network promote bacterial accumulation which can reduce significantly the microbiological quality of water. Since it has so many undesirable properties, Greensand filled iron and manganese removal is an important phase of water treatment.
Many technologies exist for the removal of iron and manganese, but the selection is always depend on the given parameters. The design of water treatment system should take into consideration of the iron and manganese content in the water, such as; chemical oxygen demand (COD), pH value of water and the required amount of water (m3/h).
For the removal of iron and manganese from water, the most commonly applied techniques are using in different types of filtering media, such as Greensand.
In most cases, the chlorine chemical is use for the iron removal and destroying harmful bacteria from the water.
The iron - manganese removal system consists of three main parts:
- Chemical dosing pump, which depends on water meters and showing the amount of water used in the chlorine feed.
- Iron and manganese removing with automatic time control backwash.
- Activated carbon filter which remove the chlorine from the water at the end of the system (it is not always necessary). This system is also automatic time control backwash.
If you would like to choose the well establish procedure, as a first step, please go through complete water analysis examination which should includes; microbiological and chemical testing. After having the chemical testing/analysis report, we will prepare and submit the quotation with specifications accordingly.
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 |