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Swimming Pool Filtration
Are you still using filters with 150-year-old technology or are you ready for the next generation of water filtration?
Some types of swimming pool filters have been using technology developed more than a century ago. Saint-Gobain introduces silicon carbide filter membranes for the next generation of water filtration for swimming pools.
Crystar® FT ceramic membrane filters consist completely of re-crystallized silicon carbide and are developed to resist even extreme mechanical, thermal and chemical stress.
Crystar® FT ceramic membrane filters consist completely of re-crystallized silicon carbide and are developed to resist even extreme mechanical, thermal and chemical stress.
Crystar® FT ceramic membrane filters have a dead-end design. The filters consist of a multitude of parallel channels that are alternately closed. The water enters through the inlet channels, is filtered by a membrane with fine pores, passes through the wall of the channel, and leaves the filter through the outlet channels.
Unlike traditional sand filters that have been in use for nearly 150 years, Crystar® FT ceramic membrane filters offer low water consumption and provide with their 250nm pore size a physical barrier for bacteria and other micro-organisms. The combination of microfiltration, chlorination and UV treatment results in amazing water quality. Additionally, significantly fewer produced chlorine byproducts reduce the odor associated with indoor pools.
Due to its high filtration area, filtration systems with Crystar® FT ceramic membrane filters require small footprints. They fit easier into existing technical rooms, which can avoid high reconstruction costs. In new swimming pool construction, technical rooms could be smaller, also resulting in cost savings.
Water Treatment Video
Play the video for a demonstration on how Crystar® FT ceramic membrane filters improve the water quality in swimming pools.
» This video is also available through YouTube in German language.
The use of Crystar® FT Filters ensures the following benefits:
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An important feature of Crystar® FT Ceramic Membrane Filters for the preparation of pool water in public pools is their ability to be cleaned even under extreme chemical conditions (eg. at pH 0.5 and pH 13.5). After such cleaning, the filters are practically in "as delivered"-state, again. If the filtration system design supports this, the filters can remain mounted in the system for the chemical cleaning and are ready for filtration immediately afterwards (CIP = "Clean in Place"). Due to the outstanding material properties of silicon carbide, the chemical cleaning can be repeated as often as required to ensure long service time.
Specifications
| Material Properties of Crystar® FT (carrier) | |
|---|---|
| SiC - contents | ≥ 99% |
| Chemical stability | 0 to 14 pH |
| Porosity (typ.) | 40% |
| Thermal expansion coefficient (20° - 1100°C) | 4.8 K-1*10-6 |
| Pore size (typ.) | 5 micron |
| Active filter area (148 x 148 mm2, L = 1000 mm) | 11 m2 |
| Weight (148 x 148 x 1000 mm3) (typ.) | 20 kg |
| Material Properties of Crystar® FT (membrane) | |
| SiC - contents | ≥ 99% |
| Chemical stability | 0 to 14 pH |
| Porosity (typ.) | 40% |
| Thermal expansion coefficient (20° - 1100°C) | 4.8 K-1*10-6 |
| Pore size (typ.) | 250 nm |
| Typical Operating Parameters | |
| Trans membrane pressure (typ.) | < 600 mbar |
| Backwash pressure (typ.) | 2 bar |