Iron removal from water
The presence of iron in the water is extremely undesirable, since it can cause a lot of negative effects, like problems with health, rusty streaks on the sink and bath, the failure of household appliances, metallic taste of water, a yellow tinge of things after washing, and more. Therefore, it is necessary to install a filter for iron removal as soon as the water analysis indicates high content of iron.
Systems purifying from iron and manganese, CLACK Birm and GreenSand
Installations for iron removal from water Clack are used for systems household water supply. Each unit consists of a filter housing, the control valve, drainage and distribution system, the filter material. The control (main) valve Clack BTZ, Clack Corporation, USA, carries washing time.
Depending on the level of iron in the water, the system may be equipped with two basic types of filter media – Birm or GreenSandPlus.
Birm – economical and efficient filling, which can be used, if the content of iron dissolved in the water does not exceed 1 mg / l. This filtering material acts as a insoluble catalyst in the reaction between the dissolved oxygen and air divalent iron. After oxidation ferric delayed in filter medium. Regeneration of the filter passes through backwash without reagents.
If the content of dissolved iron in water is less 10 mg / l, GreenSand Plus backfilling may be used. It is a sand, on which manganese dioxide is applied under heat. GreenSandPlus is used to remove from the water not only dissolved iron and manganese, but also hydrogen sulfide, arsenic and radium. Regeneration needs periodically in two stages: first backwash, then restore the oxidative properties of a weak solution of sodium hypochlorite (bleach food).
| Unit size | Productivity, m3 / h | Loading staff, l | Dimensions, mmØ x h |
| 1035 | 0,5-0,7 | 30 | 257 х 897 |
| 1044 | 0,6-0,8 | 30 | 257 х 1130 |
| 1054 | 0,7-0,9 | 40 | 257 х 1390 |
| 1252 | 0,8-1,0 | 55 | 308 х 1342 |
| 1354 | 1,1-1,3 | 70 | 334 х 1400 |
| 1465 | 1,2-1,5 | 100 | 360 х 1679 |
| 1665 | 1,6-2,0 | 120 | 410 х 1678 |
| 1865 | 2,0-2,3 | 170 | 480 х 2030 |
Advantages of Birm:
- Removing of iron and manganese from water.
- Rinsing at no cost.
- Low cost of filtering staff.
Advantages of GreenSandPlus:
- A wide range of concentrations of iron removed from the water.
- Effectively removing of hydrogen sulfide, iron and manganese from water.
- Presence of active chlorine in water is possible.
- Low level of abradability.
Possible parameters of water at the entrance for downloading, Birm:
- iron – up to 1 mg/L
- manganese - up to 1 mg/l
- max temperature of treated water – 38°С
- water pH– 6,8 — 9,0
- dissolved oxygen concentration should be not less than 15% from the concentration of iron compounds
- absence of hydrogen sulfide and sulfides in water
Possible parameters of water at the entrance for downloading, GreenSandPlus:
- iron – up to 10mg/l
- manganese - up to 4 mg / l; hydrogen sulfide – up to 5 mg/l
- max temperature of treated water – 38°С
- water pH – 6,2 — 8,5
- absence of polyphosphate and oil products in water
Key figures after the purification of water by Birm and GreenSandPlus:
- iron – <0,1 mg/L
- manganese – <0,05 mg/L
Additional installation of equipment for removing iron from water.
Additional charcoal filters at input and output systems allow pre-purify water from mechanical particles and improve water taste.
http://ecoprom.ua/en/equipment/voda-dlya-doma/iron-removal-from-water#sigProId9bdb1028b8