9.4Unsatisfactory Capacity between Regeneration’s20
10.0WARRANTY AND SERVICE21
10.1After Sale Warranty21
11.0 TECHNICAL DATA22
11.1Process and Operating22
11.1.1 Filox Series Filters CF1044 to CF 135422
11.1.2 Filox Series Filters CF 1465 to CF186522
11.1.3 Filox Series Filters CF 2160 to CF 307222
11.2Engineering Data23
11.2.1 Filox Series Filters CF1044 to CF 146523
11.2.2 Filox Series Filters CF 1665 to CF 307224
13.0SPARES LIST25
13.1WS1 Valves25
13.2WS 1.5 Valves25
13.3WS 2 Valves25
14.0CE CERTIFICATE26
FILOX WS ISS 2 \page 3
FiloxSeriesFilter
Installation Operation Maintenance Manual
1.0 UNPACKING AND PARTS LIST
1.1 UNPACKING NOTES
The unpacking of the Filter is quite straightforward, and there are no ‘hidden’
items. It is advisable to keep the packages sealed until such time as they are
used, to prevent dust or water entry.
1.2 BASIC PARTS LIST
1. VALVE (c/w flow controllers on outlet and drain)
2. CLACK MANUAL
3. INSTRUCTIONS
4. VESSEL (c/w riser and distribution system)
5. 4” - 2 1/2” REDUCER (if required)
6. FILOX (qty as specified)
7. GRAVEL (qty as specified)
1.3 MISSING OR DAMAGED GOODS
Immediately on receipt of the goods, it is advisable to check that all items
ordered have been received. If you have any doubt that goods have been
supplied as requested, please contact your supplier immediately. If any items
are missing or damaged, the carrier and your supplier must be notified within 2
days of receipt if a claim is to be made.
2.0 TEMPORARY STORAGE
If installation is not to start immediately after delivery, the equipment should
be stored in a clean dry area, where it will not be damaged, or be subjected
to temperatures below freezing.
FILOX WS ISS 1 \page 4
FiloxSeriesFilter
Installation Operation Maintenance Manual
Installation Operation Maintenance Manual
3.0GENERAL NOTES
These instructions cover the FILOX Range of filters, which includes model
numbers from CF1044 to CF 3072.
It is recommended that these instructions are read thoroughly before commencing
any work on the unit, particularly if you have no previous experience of installing and
using a filter.
3.1Iron & ManganeseRemoval
Heavy metallic contaminants, and some non-metallic contaminants can be removed
from water using specific media. These media can be mixed in a multi-layer bed
which, when combined with an appropriate backwash or regeneration system, can be
tailored to solve a wide range of specific contaminant problems.
Iron and manganese and sometimes aluminium and hydrogen sulphide can be
removed with a catalytic filter media, which uses oxygen in the water to convert the
metal ions from the soluble to an insoluble form. The insoluble precipitate is then
filtered out onto the surface of the media. Depending on the composition of the raw
water a choice of media can be used.
Filox filter media is one of these medias and just requires backwashing with the raw
water to clear the bed. The operating parameters for Filox make it suitable for a
number of water types.
3.2System Management
In order to remove accumulated deposits from the filter bed, the water flow through
the filter is reversed (backwashed). Water is run to drain at a high rate to separate
the filter media from the deposits. The control valve completes the backwash
cycle automatically at the intervals and times set during installation. Backwash and fast
rinse times are set for 16 minutes per cycle but can be altered to suit individual
requirements.
All filter valves have the option of an additional volt free microswitch, which can be
used to initiate a regen pump etc.
The main uses for a FILOX filter are for domestic and commercial removal
of Iron, Manganese, Hydrogen Sulphide and general turbidity. The Filox media
is a catalytic media that is not used up in the reaction however oxygen has to
be present in the water to enable the oxidisation to occur. If the feed water does
not contain the necessary level of oxygen then a system for adding this will be
required
The feed water flows under pressure to the control valve on the vessel where
it is directed through to the filtration media. Filox systems built with WS1, 1.5
or 2 valves will bypass raw water during backwash. For this reason the
systems are set to backwash at 2:00 AM.
Maximum Iron levels: Filox systems can be used on Iron levels of up
to 20 ppm with certain reservations. There are a number of examples
working satisfactory at higher levels.
Manganese removal: Manganese removal in a Filox system is
dependent on the level of Iron and other contaminants in the raw water. The
greater the amount of Iron, the easier it is to remove the Manganese. With
an Iron: Manganese ratio of 10:1, the Manganese is extracted very well at a
pH of 7.0-7.5. When the ratio reaches 5:1 then the pH needs to be between
7.8-8.2. When the Manganese level exceeds the amount of Iron then a pH of
above 8.3 is required. While the pH correction media in the Filox blend will
raise the pH of acid water, it cannot raise it above 8.0 consistently if the
general level of dissolved solids is high and the Langellier index is saturated.
A full water analysis is essential when considering using the Filox system
primarily for Manganese removal.
Hydrogen Sulphide:Hydrogensulphideisremovedat
concentrations of up to 3 ppm.
Humic acid/tannins: Decaying organic matter in the raw water supply
creates Humic acid or tannins, sometimes seen as light brown colour in low
pH 'peaty' water supplies. These tannins can combine and complex with Iron
and Sulphur, coating and blinding the media reducing its effectiveness. The
tannin level in the raw water should be less than 2 ppm and ideally less
than 1 ppm to eliminate the need for frequent changes or rejuvenation of the
filter media. With high tannin water supplies it will be necessary to oxidise the
tannins to an insoluble floc that is filtered out with the other contaminants.
The most effective oxidiser is Ozone, and an Ozone generator with injection
venturi and off-gas valve has proved to be very successful at preventing
tannin blinding. An alternative is to remove the tannins with an Organic
Scavenger. Moreover, Organic Scavengers need to be regenerated with
Caustic Brinerequiring thecontrol and addition of two consumables, one of which
is corrosive and difficult to handle.
Chlorides:Very high Chloride levels in the raw water can inhibit the
performance of the Filox system by preventing Iron and Manganese from
precipitating. In normal circumstances the Chloride level in the raw water
should be less than 100 ppm and ideally below 50 ppm.
FILOX WS ISS 1 \page 6
FiloxSeriesFilter
Installation Operation Maintenance Manual
Backw ash: Whi le the Filox system is designed to operate and
backwash at the same flow rate, it essential that there is sufficient pressure and
volumeof water at the recommended backwashflow. It may be necessary to fit a larger
backwash flow button, or even a higher flow valve on larger systems if the pressure
is low, just to achieve the required cleaning of the filter bed. Alternatively a longer
backwash may be needed to achieve the same effect.
FILOX WS ISS 1 \page 7
FiloxSeriesFilter
Installation Operation Maintenance Manual
4.0REGENERATION/BACKWASH
4.1The Backwash Process
The backwash process consists of two stages:-
Backwash - Water flows upwards through the media bed, and out to a drain.
As it does so it separates the deposits from the filter media and cleans off any
particles of dirt or pipework corrosion products, which may have accumulated
during the service cycle.
Fast Rinse - This follows the backwash cycle and entails rinsing away any
residual deposits from the media and re-packing the media bed. This is
carried out down flow with water flowing through the media in the direction of
service.
4.2TIME CLOCK CONTROL OF REGENERATION INITIATION
Mostfilterapplicationsystemsaresuppliedwithatimeclock
configuration valve, which initiate regeneration at a pre-set time (usually
2:00 AM) after a pre-set number of days. The frequency of regenerations is
fully adjustable, but a minimum of once every 3 days is recommended.
FILOX WS ISS 1 \page 8
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