Description
Problem
Iron content.
Unit description
The chemical-free iron removal unit is designed to remove dissolved iron (Fe2+) and precipitated iron (Fe3+). The unit consists of a vessel filled with filter media, an air intake valve, an air release valve and a fully automatic controller that manages the filter’s operation. The filter medium is Birm, made specifically for water treatment.
Operating principle
The iron removal process involves oxidation of the dissolved iron with atmospheric oxygen, precipitation and filtration of the precipitate into the filter media. The filter media together with air speeds up the oxidation of the iron dissolved in the water. The iron precipitate remains in the filter media and is flushed into the drain during its backwashing. No chemicals are needed to backwash the unit’s filter media. The unit works fully automatically, starting backwashing on a time basis. Under the standard program, the unit backwashes every three days. The installation site needs an electrical outlet and a drain connection.
Technical data
| Flow rate, maximum | 1.5 m³/h |
| Operating pressure | 2–8 bar |
| Operating temperature | +5 to +30 °C |
| Electrical connections | 230 VAC / 50 Hz |
| Backwash water volume* | 1119 l |
| Backwash water flow rate | 2.74 m³/h |
| Filter media | Birm, support gravel |
| Unit dimensions (L x W x H) | 410 x 490 x 2015 mm |
| Connections (inlet, outlet, drain) | 1″ male thread, 1″ male thread, 1″ male thread |
* Water consumption is calculated per backwash at an inlet pressure of 3.4 bar (under the standard program).
Unit components
- Controller
- Timer
- Filter vessel
- Upper screen
- Filter media
- Center tube
- Support gravel
- Lower screen
- Air release valve (installation materials for the air release valve are not included with the unit)
- Air intake valve
Unit connections
- Outlet – 1″ male thread
- Drain – 1″ male thread
- Inlet – 1″ male thread
