Ultra Filtration &nano Filtration With Applications
Ultra Filtration &nano Filtration With Applications
Ultra Filtration &nano Filtration With Applications
Drinking water treatment 300 m³/h using ultrafiltration in Grundmühle waterworks (Germany)
Ultrafiltration can be used for the removal of particulates and macromolecules from raw water to
produce potable water.
It has been used to either replace existing secondary (coagulation, flocculation, sedimentation) and tertiary filtration
(sand filtration and chlorination) systems employed in water treatment plants or as standalone systems in isolated
regions with growing populations.[1] When treating water with high suspended solids, UF is often integrated into the
process, utilising primary (screening, flotation, filtration) and some secondary treatments as pre-treatment stages.
UF processes are currently preferred over traditional treatment methods for the following reasons:
Industry Uses
Non-thermal solvent recovery and managementRoom
Fine chemistry and Pharmaceuticals
temperature solvent exchange
Removal of tar components in feedPurification of gas
Oil and Petroleum chemistry
condensates
Product PolishingContinuous recovery of
Bulk Chemistry
homogeneous catalysts
Fractionation of crude extractsEnrichment of natural
Natural Essential Oils and similar products
compounds Gentle Separations
Able to extract amino acids and lipids from blood and
Medicine
other cell culture.
APPLICATIONS OF NANO FILTRATION
• Advantages over reverse osmosis when retention of mono – valent
salts are not required
–Much more permeable membrane
– Higher solvent fluxes, often a factor of 10
– Lower energy and capital costs
APPLICATIONS OF NANO FILTRATION
• Potable Water
– Remove colour from water drawn from peat lands
– Remove humic and fulvic acids
– Conventional treatments labour and chemical intensive
– Suitable for small domestic supplies in isolated communities
– Can operate unattended for long periods of time
– Does not remove minerals
• Sugar Concentration
– Concentration of lactose from deproteinised whey stream
– Concentrates lactose while allowing mono-valent ions to pass through
– Concentrated lactose stream used as feed for fermentation
APPLICATIONS OF NANO FILTRATION
• Dye Production
– Improved by using nanofiltration
– 10% NaCl reduced to 0.2%
– Concentrate product by 30%