Multilayer Filter Type FNS

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Multilayer Filter Type FNS

In waste water treatment plants multilayer filters are installed downstream as security filter. Filtration of suspended particles takes place in the upper layer consisting of hydroanthracite or silica sand. Backwashing is carried out by manual operation or automatically operated valves.

• uncomplicated and effective
• removal of suspended particles
• high performance
• space-saving installation and easy to maintain

Figure: Decker multi layer filter type FNS

Due to its geometry, the corrosion resistant materials and the special filling, the multi-layer filter FNS has a remarkable filtration capacity.

Pressure filter

The pressure filter consists of the vessel with valve system, manometer and sampling-valve. The interior consists of a modern nozzle floor with impact- and corrosion-resistant nozzles made of polystyrene.
The vessel is sandblasted and covered with a corrosion-resistant synthetic material which won’t embrittle and which stands out due to very high adhesive power.

Backwashing

Manually operated with hand-valves or automatically controlled by pressure-difference.

Maintenance

Maintenance is limited to regular backwashing which is released by simple adjusting of the operating valves.

Examples of use

Multi-layer filters are mainly used for clarifying and particle-filtration of liquids, f. ex.

• as downstream filter of waste-water-treatment plants to remove incompletely sedimented metal-hydroxide flocs
• for pre-filtration for ion-exchange circulation systems
• for removal of iron and manganese in the field of water-purification.

Figure: Decker multi layer filter FNS engeneering drawing

Figure: Decker multi layer filter FNS valve positions

Data

Decker Verfahrenstechnik GmbH
Bruckaecker 12, 92348 Berg/Opf., Germany
Web: http://www.decker-vt.de E-Mail: info@decker-vt.de
Phone: +49 (0)9189/4410-0 Fax: +49 (0)9189/4410-20

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