Products » Sand Dual Filters

Sand Dual Filters

STEADY SAND FILTER - DUAL MODEL

Double chamber steady sand or grit filtering system

Filtro a graniglia dual



Funzionamento del filtro a graniglia

Funzionamento in filtrazione »

 

pulizia del filtro a graniglia

Controlavaggio del filtro »

 

 

Codice e portata Dual manuali »

 

 

Codice e portata Dual automatici »

Peculiar filtration requirements for waters designated to irrigation or micro-irrigation in agriculture need systems using quartzite layers.
Filtration takes places through the passage of water from the bottom to the upper thought the sand layer that is set in a double separate chamber.
Particles are gradually blocked till the below layer is reached and the filtering efficacy increases as the liquid goes downwards.

Basically it is the same natural process of water that goes through the ground layers before reaching the underground flap.

The substantial difference with respect to the vertical model Arena is the presence of the double filtration chamber that enables the single filter to filtrate in a continuous way, also during back washing that takes place in a chamber at a time.

Available in the following versions:

 

Models:
In the manual models it is necessary to integrate a back washing kit equipped with shutter valves. These version allow low cost purchase but request a constant maintenance for the back-washing.

In the automatic versions the continuous operation is assured by valves automatism. The valves are controlled by a programmable control box.

Both filters and support-frame are completely made of painted or zinc-coated steel.

In the lower inside part of the chambers Dual Filters are equipped with filtering arms with 0,25 mm nozzles through which water flows outside perfectly filtered.

 
Applications
Being this a static drop filtration system, it is suitable to any kind of filtration of waters coming from:
  • canals
  • lakes
  • rivers
Ideal for usage in agriculture (irrigation system)
 
Filtration rate:
It equals a filtration rate of: 100 µ.
 
It assures the trapping of very small particles such as:
  • algae
  • organic materials
  • micro-organisms
  • colloids

It is advisable to mount upstream, a pre-filter such a Hydrocyclone that can remove up to 90% sand and solid particles or a screen filter.
» Enter in www.filtriidrocicloni.it

Operation during filtration:
The water to be filtered forcedly enters from the upper part (maximum working pressure 8 bar) and falls on the grit layer inside the two chambers... »(enter)
 
Back-washing:
Over time filtration becomes less efficient and flow rate loss in outlet may occur (or loss of load)... »(enter)
 
Maintenance:
If properly used and dimensioned, maintenance is basically null.
The forced back-washing system cleans and re-generates the grit layer which, besides, over time, needs to be replaced.
Total grit replacement frequency depend on the filter usage conditions and on the kind of water to be filtered.
 
 
Grit replacement
We normally advice grit complete replacement every 4-5 years because over time grit tends to get round by smoothing consequently blocking the micro-holes of the filtering arms placed at the bottom (flow rate decrease).
 
Versions, part numbers, flow rates

 

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efficenza della microfiltrazione

l’efficienza negli impianti
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Filtrazione

La filtrazione
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sistema_filtrazione_dischi

Sistema di filtrazione
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Brevetto

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Brevetto

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OFFICINE MECCANICHE PARENTI S.r.l.
Via Emilia n° 51/E 40011- Anzola dell’Emilia (Bologna) - Italy
Tel.: +39 (051) 73.21.90 - info@omparenti.com
P.IVA e C.F.: 02577301209 NUMERO REA: BO - 450522 ISCRITTA NELLA SEZIONE ORDINARIA IL 03/08/05
CAPITALE SOCIALE VERSATO : € 10.000,00 €