Crystar® Filtration Technology (FT) are high purity recrystallized silicon carbide membranes which offer advanced microfiltration solutions for numerous applications. The demands regarding separation processes and more specifically microfiltration have changed over the years, as a growing global population forces industries to adopt more stringent and efficient processing capabilities to satisfy the needs of sustainability efforts. Crystar silicon carbide ceramic membranes are designed to achieve liquid purity, safety, and sustainability. Crystar membrane technology provides microfiltration of leading efficiency, with consistent retention, excellent filtrate quality at high fluxes, and operation with low consumption of water
Crossflow microfiltration is a key step to ensure the stability and sensorial properties of wines, which are of all-out importance to the product value. The complexity of wine composition and its natural fluctuations require the use of robust membrane technologies, capable of withstanding a wide range of operation conditions, both during filtration and cleaning operations.
|Filtrate flux [LMH]||Filtrate turbidity [NTU]|
|White Wine||100 - 400||<0.4|
|Red Wine||50 - 200||<0.5|
Beer clarification is used to eliminate turbidity caused by yeast, bacteria and other particulate matter, as well as to eliminate the haze effect at low temperatures. It has a crucial contribution to the sensorial properties and stability of the finished product. It is a sensitive yet difficult stage of the beer production process. The challenge is to ensure a reliable productivity of beer at high levels of quality and consistency. Crystar® FT is the most promising alternative to replace hazardous Kieselguhr (diatomaceous earth) filters.
|Filtrate flux [LMH]||Filtrate turbidity [EBC]|
|Pilsner||50 - 100||1|
|White||20 - 50||<2|
Extensive amounts of wastewater effluents are produced during industrial processes. Industrial wastewater can be comprised of particulate matter, microorganisms, oil and chemicals which can harm ecosystems and infiltrate the human drinking water supply. Crystar® ceramic membrane technology is a cost-effective solution for the filtration of the most aggressive industrial wastewater as part of the water recycling and reuse process.
|Filtrate flux [LMH]||Filtrate turbidity [NTU]|
|Oily wastewater||100 - 300||<2|
|Sodium hydroxide cleaning solution||150 - 300||<2|
Cleaning and disinfection processes of swimming pools, spas, and splash pads can be drastically improved by the use of ceramic microfiltration membranes, and more specifically Crystar FT, as an alternative to granular media filters and pre-coat (perlite, diatomaceous earth…) technologies. They enhance the water quality through a fine and consistent filtration of suspended matter, a reduction of microorganisms such as legionella, cryptosporidium, giardia, and by contributing to the reduction of chloramines and THMs. Crystar FT membranes are also instrumental in the manufacture of state-at–of-the-art pool water treatment installations using compact filtration systems with low water and energy consumptions.
Drinking water production is a crucial process for ensuring that people worldwide have access to safe and affordable potable quality water. This implies drinking water filtration must be carried out to uncompromising degrees of reliability. Crystar® liquid filtration technology offers excellent levels of efficiency in terms of microorganism retention and particulate removal, combined with unmatched filtration fluxes and water productivity. With fast and efficient cleaning procedures, Crystar ceramic membranes provide a very compact and cost-effective filtration process to meet the needs of future drinking water demand.
|Water production yield||Operating pressure [bar]||Power consumption [kWh / m3 of water]|
|Ground Water||> 97 %||0.2 - 0.8||0.05 - 0.08|
|Surface Water||>95%||0.2 - 1.5||0.07 - 0.10|
Crystar® Filtration dead-end technology uses multi-layered membranes of recrystallized silicon carbide (R-SiC) carried by a unique honeycomb monolith geometry, made of porous recrystallized silicon carbide. This outstanding combination between the superior properties of R-SiC and the ultra-compact honeycomb geometry results in improved permeate fluxes at reduced pressures for lower energy consumption and fast and low water consumption backwash operations.
Achieve the highest standards of purity and reliability required in processes such as beverage clarification, powders concentration, chemicals recovery and biotechnology processes. Crystar® silicon carbide microfiltration delivers accurate retention cut-offs and long lifetime with efficient operating conditions for filtration and cleaning cycles to support the manufacturing of high value products.
Sustainability is increasing globally and urging for recovery of wastewater and more efficient production of high purity process water in several industries. Growing needs for drinking water availability, safety, and quality also call for the development of new, improved water treatment technologies. Crystar® ceramic microfiltration is the solution for the recycling of difficult industrial wastewaters and for the production of high quality water for drinking or industrial use with the lowest environmental footprint.
With Crystar® FT, Saint-Gobain provides pool owners with a revolutionary filtration technology that lowers operational costs, reduces the environmental impact of the installation (water, energy and chemicals consumption) and increases water safety and comfort for swimmers.