Water Filtration Systems

Filtration is the process by which, physical impurities and suspended particles of water are filtered. Different methods are used for filtration. These are micron filters, media filters, pressure sand filters, activated carbon filters, dual media filters.

For any type of main water treatment & Purification, filtration is always necessary as a pre treatment.

Micron Water Filter
Cartridge filtration units generally operate most effectively and economically on applications having contamination levels of less than 50 �€“ 80 ppm. For heavier contamination applications, cartridges are normally used as final polishing filters. In the following the basic systems of cartridge filters are listed

Wound cartridge filters:
- the most common type of depth filters
- materials: natural or synthetic yards, which are wounded around a central tube or former
- numerous applications in the industry

Bonded cartridge filters:
- one-piece cordless construction, consisting of resin bonded fibers of solid particles
- their filtration range is between 5 to 125 micron, good chemical compatibility/flow rate
- frequent application: viscous fluids, process duties

Pleated cartridge filters:
- today's most common cartridge filter system
- materials: cellulose basis, resin impregnation; polyester, micro fiber glass, polypropylene
- advantages: increased surface area (up to 60 %) compared to traditional cartridge filters

Metal fiber cartridge filters:
- material: stainless steel fibers, connected to a mat
- used in the polymer industry

Hollow fiber membrane cartridge filters:
- for applications under 0.5 micron, for example used for the removal of aerosols.
Further applications can be, for example microbiology
(filtration range down to 0.01 micron), where sterility is very important
- materials: hydrophilic polyamide/polypropylene

Applications:
• Pre RO water
• Chemicals
• Beverages
• Solvents
• Compressed air
• Cosmetics
• Alcohol

Sand Water Filter
Sand filtration is frequently used and very robust method to remove suspended solids from water. The filtration medium consists of a multiple layer of sand with a variety in size and specific gravity. Sand filters can be supplied in different sizes and materials both hand operated or fully automatically.
Raw water pump is used for generating necessary operating pressure in the pressure sand filter. Raw water is passed through CHEMTRONICS Multigrade Sand Filter at a pressure of 3.5 kg / cm2 to reduce the suspended solids present in the raw water.

The filter will effectively remove up to 30 °C ; 50 micron of the suspended solids to less then 5 ppm. The filter will have to be washed with raw water for 20 to 30 minutes daily. To filter the partials below 30°C 50 micron cartridge filter is used.

Applications for sand filtration :
• Preparation of cooling water
• Treatment of waste water
• Production of drinking water
• Filtration in swimming pools
• Pre filtration for membrane systems
• Filtration of gray or surface water
• Swimming pool water