Iron and manganese removal filters

Iron is the most frequent unwanted ingredient in Estonian groundwater. When becoming into contact with oxygen, two-valence iron is oxidized to three-valence iron and settles, smearing and clogging sanitary devices. Iron is also to blame when the water looks, smells or tastes unpleasant. Iron is often accompanied by manganese, which affects water quality about the same way as iron, but at smaller concentrations. Iron and manganese can easily be removed without chemicals, using iron and manganese removal filters FeAA and FeM, or iron and alkaloid filters (for pH regulation) FeACA and FeMC.

We offer manually controlled filters (FeM and FeMC) as well as automatically flushed filters FeAA and FeACA. The latter are especially suited for single-family houses, groups of houses and apartments, and the filters FeM and FeMC for summer cottages and places where water is used only occasionally and in small amounts. Iron and manganese are removed by oxidation and following filtering through catalytic sand, in which the oxidized floc are detained. If orderly flushed, the filter medium does not age and functions for a long time. The flushing frequency of the automatic filters FeAA and FeACA is preset and the detained iron and manganese floc are discharged to a sewer. Those filters require an electricity supply (230 V, 3 W). Flushing of the filters FeAA and FeACA is controlled manually and there is no need of power supply. They are as efficient as automatic filters.

Technical features

Key: GRP – filter frame fibre glass; RST – filter frame stainless steel SS2333; KS – zinc coated steel; MW – summer cottage model; (1) shorter filters also available; (2) standard connections may be altered; (3) pressure resistance may be altered.

Installation requirements

General

The filter should be placed onto a horizontal base and installed in a place where temperature does not fall below 5 –10 °C. Nothing may be placed upon the filter. In order to ensure automatic flushing the filter should always be mounted behind the hydropneumatic accumulator. The filters 8, 10, 12 and 13 are filled in the factory and ready to install and for use.

Choosing a filter

For choosing a filter, the water must be analyzed. In general, it is insufficient to determine merely the iron content, often the content of other components should be known. The capacity of the filter depends upon the water demand. All filters have a one-year guarantee. We offer special equipment and larger filter systems for industrial enterprises and settlements, as well.

Electricity supply

Earthed single-phase alternating current (230V). The filter is equipped with a converter (adapter).

Water

The filter is to be connected to the cold water pipeline, where the pressure is at least 2 bar (maximum pressure see table). The pressure class of the steel reservoir may easily be altered. The actual hydraulic capacity of the filters is higher than indicated, but in the case of larger throughputs the treatment efficiency decreases.

Sewerage

A sewer or other recipient, which is capable of receiving the filter flush water, must be available