Pressure filters

A pressure filter is a closed tank with a single or a combination of filter media for removal of one or several contaminants. We have access to over ten different filter materials from our suppliers for removal of iron, manganese, ammonium, and aggressivity in waterworks, companies, and private households.   

No matter if you need drinking water or water for commercial or industrial use, the water must be treated before it has the required quality. The complexity of the treatment clearly depends on the quality of the water supply and the final application.

One plant - many applications

Waterworks and companies/households with own water boring needing drinking water quality, use filtration in pressure filters to reduce contents of metals and salts. With individually composed layers of filter media the pressure filter plants can also be used for special fields of application.

  • iron, manganese, ammonium
  • aggressive carbon dioxide
  • pesticides
  • arsenic
  • dechlorination of water
  • reuse of process water
  • filtration of seawater
  • percolate filtration 
  • suspended solids
  • collection of mucous particles
  • final filtration of waste water

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A natural process without chemicals

Pressure filters from EUROWATER are designed to use only natural processes such as oxidation and filtration for producing drinking water. The advantages of using only air for oxidation and filtration are:

  • Good working environment 
    The working environment is very safe without the handling and storage of dangerous chemicals.
  • No wastewater problems 
    EUROWATER pressure filters are designed for low rinse water consumption and the rinse water is not harmful. Therefore, there is no risk of effluent water with traces of chemicals.
  • Completely safe operation 
    No risk of chemical residue in the drinking water.
  • Ease of use 
    Dosing of chemicals requires a very demanding operation and attendance as well as controlling and monitoring.

Product overview

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 reliability in operation, and short delivery time. Each solution can be customized and built according to the specific application by adapting the choice of material, instrumentation, and control system - based on our combined know-how.

Plant design
The pressure filter plants are available with manual or automatic backwash. The tank is made either of steel or stainless steel. Inside, the tank is protected against corrosion according to job and likewise, the choice of filter media is based on individual considerations. The pressure filter plants are modular-built which makes it possible to vary and combine components according to your needs.

 

Contact your local sales and service office for more information, data sheets or instructions. 


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Flow rate up to 12 m3/h

Manual/automatic pressure filter type NS/NSB
7 standard modules

Flow rate up to 100 m3/h

Manual/automatic pressure filter type TF/TFB
22 standard modules

Highly durable filter with proper surface coating

The filter tanks are made of steel and therefore extremely robust and less sensitive to changes in pressure. The correlation between the steel and proper surface coating makes them highly durable and long lasting. 

The composition of the water and the temperature determine the choice of surface coating. Surface coating is classified as inside and outside coating.

Stainless steel

Inside / outside

SAE 316L grade stainless steel.
Outside treatment: Pickling, glass blasting and passivation.
Inside treatment: Pickling

Epoxy paint

Outside

Normally, outside surface coating will be sand blasting and efficient priming followed by synthetic enamel in an optional RAL colour. Very high corrosion category (C5-I).

Coated

Inside

Inside, the filter tanks can either be without coating or with coatings suitable for different applications. Specific requirements for hygiene and drinking water approval can often be met. 

PPA

Inside / outside

Several of the filters are available with PPA coating both inside and outside. The PPA is a high-performance polyethylene-based coating with excellent resistance to UV, chemicals, and corrosion (highest corrosion category C5-M).

Nozzle plate ensures trouble-free operation

Efficient backwashing is one of the key elements for continuous and trouble-free operation. A pressure filter from EUROWATER is equipped with a specially designed nozzle plate. It ensures uniform distribution for optimum use of the filter material as well as backwash. 

In operation

Raw water is pumped into the tank (2) and mixed with compressed air (1).

The nozzle plate in the bottom makes sure that the aerated water passes evenly through the filter material. The clean water is conducted to the consumer (4).   

Air blowing

The inlet and outlet valves switch and air is strongly blown into the tank through the nozzles (6). 

The nozzles distribute the air. Turbulence loosens the particles deposited on the filter grains. The water is lead to a sedimentation tank (3).

Backwash with water

Rinse water is pumped into the tank (5) from the bottom and the nozzle plate distributes the rinse water evenly.

Detached deposits are transported out of the tank to a sedimentation tank (3). The inlet and outlet valves now switch back to operation. 

The advantages of the nozzle plate

 

Utilization

Optimum utilization of the filter media

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Quality

Good filtration quality equals high water quality

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Capacity

High filtration capacity through efficient and regular air blowing and backwash of the filter media

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Water saving

Long service intervals between each backwash
 

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Long life

Increased lifespan of the filter media

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Filter media designed for your water treatment plant

Choice of filter media is the key to attain the required water quality. Nevtraco® and Demantex® are filter media produced by EUROWATER. This way, we can ensure you filter media of the best quality.  

Nevtraco®

Nevtraco is primarily used for iron removal but can also be used for removal of ammonium and nitrite. The medium is based on lime and has several advantages:

  • Very high capacity
  • Low rinse water consumption
  • Made of bryozoan limestone
  • Neutralisation of aggressive carbon

Demantex®

Demantex has proven to be a very efficient material for manganese removal – even under difficult conditions with low pH values. This natural filter medium has several advantages:

  • Pure and natural manganese dioxide
  • Efficient adsorption
  • Easy backwash
  • Approved for drinking water

Gain knowledge about filtration of water 

We have collected all you need to know about filtration of water. From filter medium to a plant with many possibilities and the optimum solution.  

Download leaflet

See references with pressure filter

Get the optimum solution

Selection of unit depends on application, water quality, and water consumption. We are at your service to ensure the optimum solution based on our combined know-how. Fill in the form and let us get back to you.

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