Particle Filtration (Particles greater than 0.1 micron)
Pre-filtration protects treatment processes from contaminants entering from outside the system. It also prevents particles released by treatment equipment from harming downstream processes, including other filters. In general, particle filtration and pre-filtration remove particles larger than 1 micron.
The objective of the particle filters is to remove larger contaminants and protect both downstream filters and downstream processes, especially RO membranes, from fouling be sediment and other particles entering the system.
Water is usually filtered through a multi-media filter (sand filter) before entering a treatment system.
Particle filtration utilises physical barriers to remove suspended solids and microorganisms from the feed water. Particles greater than 0.1 micron are removed from the feed, but will still allow the passage of dissolved matter, organics, colloids and viruses to the filtrate. Flocculation, coagulation and clarification may be used prior to filtration to aid in the removal of suspended solids.
Many of these systems will require backwashing as part of their operating cycles to remove any foulants present, extending the life of the filter. This allows it to be reused repeatedly until fouling becomes irreversible and a replacement of the filter medium is necessitated.
ScaleAwayTM offers the following filtration technologies:
ScaleAwayTM offers the following filtration systems:
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