ULTRA FILTRATION FOR WASTEWATER RECYCLE
Ultrafiltration (UF) is a type of membrane filtration in which hydrostatic pressure forces a liquid against a semi-permeable membrane. Nowadays Ultrafiltration membrane processes are increasingly employed for wastewater recycling treatment for removal of bacteria and other microorganisms, particulate material, and natural organic material, which can impart color, tastes, and odors.
Ultrafiltration uses hollow fibres of membrane material and the feed water flows either inside the shell or in the lumen of the fibres. Suspended solids and solutes of high molecular weight are retained, while water and low molecular weight solutes pass through the membrane. When strategically combined with other purification technologies in a complete water system, UF is ideal for the removal of colloids, proteins, bacteria, pyrogens, proteins, and macromolecules larger than the membrane pore size from water.
Advantages
Good and constant quality of the treated water in terms of particle and microbial removal
Process and plant compactness
Simple automation
Applications
UF can be used for removal of particulates from raw water, to produce quality treated water after tertiary treatment. Once treated with Ultrafiltration, processed/recycled wastewater can be used for a number of industrial purposes, including boiler or cooling tower washing equipment, hardstands and vehicles, fire protection, process rinse water or processing water for production lines in manufacturing industries, toilet flushing, dust control, construction activities, and concrete mixing.
Recycling benefits
In addition to providing a dependable, water recycling provides tremendous environmental benefits. By providing an additional source of water, water recycling offers ways to decrease the diversion of water from vital, sensitive ecosystems, thus ensuring that sufficient water flows to plant, wildlife, and fish habitats—allowing them to live and reproduce. Other environmental benefits include a reduction in wastewater discharges and reducing or preventing the potential for pollution.
Tag words
Ultrafilter, Wastewater recycling, Ecosystems, Microbial removal, Colloids removal
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