Water filter bagcamping

The bag filters are also available as frame-mounted unitswith optional pump and with two or more bag filters for higher flow rates.

GravityWater Filter

Bag filters are ideal for filtration jobs with heavy demands on flow rates and space. They are typically used for filtration of both boiler and cooling water, circulation water in district heating plants, rinse water and process baths in the surface treatment industry and in the electronics industry.

The circulation water in district heating plants should not contain sludge and mechanical impurities, because they cause corrosion and clogging of the regulating equipment. A bag filter for hot water is suitable for partial stream filtration. The EFG5 type filter is designed especially for district heating plants.

KatadynWater filter bag

The top fits all existing EUROWATER bag filters, making an upgrade easy and affordable compared to changing the entire unit.

Filter bags well suited for chemical filtration where the water flow is high compared to the amount of matter to be filtered out. The filter media is replaced when it is used up and no backwashing is needed.

Bagfilters forwatertreatment

The bag filters have a robust design, which makes them suitable for both cold, hot, acid and basic liquids. They are easy to install and maintain and have no rinse water consumption.

Reduction of iron in the district heating system, is part of asset management. Risk of corrosion in boilers, valves, fittings, installations, and underground piping is reduced significantly.

1 MicronWater Filter Bag

The Danish district heating company Hvide Sande Fjernvarme, had a high level of iron in the feedwater. Production manager, Martin Kristensen, explains:

In surface treatment industries, a bag filter can ensure clean process baths which prolong the tool life. Special filter bags designed for degreasing and phosphating baths prolong the life of the bath, thereby reducing the quantity of waste water and the risk of clogging the nozzles and the valves in the system.

A partial stream filtration using magnets is particularly useful for circulating water, e.g. district heating plants, where magnetite naturally forms in the circuit water.

The bag filters type EFG are suited for filtration of hot water with temperatures up to 100°C. The filter house is made of steel. The modules can be supplied painted outside and untreated inside. They are also available in hot-galvanized steel and stainless steel. The filter can be supplied with a built-in magnet.

Puribag

Filter bags can be combined in series to obtain a high flow rate. The photo shows an installation with 10 bag filters type EFG7 at a district heating company in Germany.

All water supplies contain organic matter. Prefiltration is therefore relevant in the water treatment process to protect and extend the lifetime of other water treatment units such as reverse osmosis plants.

Our product range comprises a wide number of standard plants, all engineered and manufactured in-house. The starting point is our modular-built standard system ensuring high flexibility, high operational reliability, and short delivery time. Each solution can be customized and built according to the specific application needs by carefully combining materials, instrumentation, and control systems.

The bag filters type EF are made for cold water (below 35°C). The filter houses are made of either PVC or steel coated with corrosion-resistant, high-density polypropylene. The support screen is normally of PVC. The EF 5 module is available in several different materials for special applications.

Plant designA bag filter consists of a filter house with cover and a support screen for the replaceable filter bag. The filter house is available with different surface material on the inside and outside according to filtration task.

As a prefilter or partial flow filter, a bag filter can serve many purposes. Here are some examples of the applications that can benefit from mechanical filtration.

"We had to do something about the iron content in the water, because it was above the recommendations of the Danish District Heating Association of 100 µg / L. We tried a 1 micron filter in a partial stream plant with two bag filters and a magnetic insert. It seemed to work!"