There are many benefits to installing a Ceramiflo pool filter over more traditional filtration methods such as sand and glass.

A comparison between Ceramiflo filters and Sand filters

  Ceramiflo Filters Sand Filters
Water Quality Filter down to 3 micron without PAC. Filters water down to 10 micron or 7 with PAC.
Media  No filter media required. Membranes guarantee for life. Sand needs to be replaced every 5 years.
Operation  Fully automatic and monitored off-site. Normally manually backwashed.
Dirt Build Up  Dirt is cleaned off the filters several times a day. Dirt is retained for up to a week.
Holes  No holes as there is no filter media. Filter media can channel and has to settle after backwashing.
Servicing  In-situ automatic cleaning system. Manually controlled by on-site operators.
Monitoring  Continuously monitored and controlled on the internet. Require inspecting annually.
Construction

 Stainless steel and polypropylene construction. Membranes guaranteed for life.

Mild steel requires re-coating every 5 years. Fibreglass laterals require replacing every 5 years.

Water Usage  Only 75 litres of water required to backwash each membrane. Requires approximately 30 litres of water per bather for backwashing.
Backwash Tank No need for backwash holding tank.  Often have to restrict backwashing due to inadequate drains.
Retrofit Access Modular so will fit through normal 700mm door. Needs very large access doors.
Space Takes up just 30% of the space that a sand filter does. Occupies 70% more space than a Ceramiflo filter.
Headroom  Only requires 2.4m of headroom. Requires 3.5m headroom.

 

Better Filtration

Traditional sand and glass filters will only filter out 5 to 7 micron particles, when PAC (poly aluminium chloride) is used and when a flocculant is not used, particles as large a 10 microns will pass through. Ceramic membrane filters are capable of removing particles as small as 0.01 micron. In addition to this a sand filter will only remove 50% of cryptosporidium oocysts without flocculation. We supply ceramic membrane filters that are capable of filtering out between 1 and 3 microns. That is sufficient to remove up to 100% of Cryptosporidium oocysts, which are typically 4-6 microns in diameter.

Sand filters are also prone to the sand sticking together so they end up channeling allowing unfiltered water to pass through them. Ceramic filters cannot channel so they will never let large particles such as cryptosporidium oocysts through.

 

Lower Building Costs for New Pools

Ceramic membrane filters are very compact requiring only 30% of the footprint of traditional sand filters and a ceiling height of 2.4 metres. Furthermore, a much smaller balance tank is required as the system has frequent small backwashes (75 litres per backwash). There is also likely not be a need to store backwash water prior to discharge to drain saving the cost of this tank.

 

Easy Retrofit to Existing Pools

Ceramic membrane filters are supplied in a modular form which can fit through a single pedestrian door. This means they can be fitted to existing pools with minimal disruption to the pool operation.

 

Reduced Water & Energy Usage

Ceramic membrane filters typically use 10 litres of water per bather compared to the normal 30 litres. Backwashing is fundamentally different from traditional filters. The filters are first blown through with pressurised air and then rinsed for only a few seconds. Each filter element only uses 75 litres of water per backwash. In addition to this less heat is lost down the drain due to less water being used when backwashing.

 

Purer Water

Finer particles are removed, which significantly improves the water clarity. In addition to this the ceramic membrane filters are automatically backwashed when the back pressure reaches a pre set level and they are also forced to backwash a few hours after bathing has finished. On a busy pool this means they will be backwashed several times a day. Consequently there is much less biologically and chemically active filter held on the filter compared to traditional filters where this material can be held on the filter for up to a week (or a month on regenerative filters). The material held on a traditional filter is chlorinated to form disinfection by-products such as THMs (tri- halo- methanes). This means the level of THMs is much lower when ceramic membrane filters are used.

 

Fully Automatic Control

All systems are completely automatic and are constantly monitored over the internet. If a fault occurs we will be immediately aware of it and be able to carry out remedial action remotely. As mentioned earlier, backwashing is also completely automatic so there is no need for any operator input.

 

Backwashing

When traditional filters are backwashed they have to settle down (ripen) for several hours before they will filter properly. During this period larger particles such as cryptosporidium oocysts can pass through the filters and return to the pool. Consequently it is recommended to back wash at  the end of the day when no bathers are present. This also gives the pool chance to heat up again before bathers return. There is no need for  ceramic membrane filters to ripen. They are 100% effective as soon as the backwash is complete. There is no cooling of the pool by make up water as only small amounts of water are used for each backwash.