The filtration process of the ASTRASAND™ filtration system is comparable to fixed bed filters in that it removes particulate material.  Operating under a constant backwash mode, continuously cleaning the filter bed.  The design of the ASTRASAND™ filtration system is modular and compact, enabling simple construction, quick installation and low maintenance.  Ideal for installations with extreme site restrictions or as an add-on to existing treatment systems. 

Applications include: 

• Biological nitrificaton/denitrification and polishing of municipal and industrial wastewater.
• Filtration of flocculated contaminants in surface water as a pretreatment of demineralized water production
• Wash water treatment in fresh and process water production.
• Biological sidestream filtration of cooling water.
• Biofiltration for BOD and heavy metal removal.

ASTRASAND is a  trademark of Paques bv of the Netherlands.