Pure Aqua, Inc.
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Model MF-1100 Series -Industrial Media Filters
FromPure Aqua, Inc.
Multi-media water filter system represents a significant improvement over single-media filters. This is primarily due primarily to improved filter bed action based on the innovative use and selection of filter media. Multi-media filtration permits delivery of high quality filtered water at much faster flow rates, as compared to a conventional sand filter.
In a conventional sand filter, lighter and finer sand particles are found at the top of the filter bed, and coarser, heavier sand particles remain at the bottom after backwashing. Filtration takes place in the top few inches of the filter bed.
A multi-media filter is backwashed in the same manner as a sand filter, using reverse or upward flow of water through the filter bed. The various layers of media retain their stratification because each material has a different density.
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Pure Aqua pressure filters can be used in a variety of service conditions including, but not limited to: industrial, municipal, and institutional applications.
Pure Aqua supplies a wide range of filter media that meet industry standards for efficient and effective filtration.
Filter Media Types:
- Sand is the most common filter media. Generally, fine mesh sand is coupled with a course grain support bed to remove suspended solids and turbidity. Graded in various ranges, Pure Aqua sand can be used as filtration medium or underbedding depending on particle size and application.
- Gravel has a highly spherical shape that promotes good flow and even distribution in support beds.
- Calcite media is specially graded calcium carbonate compound for neutralizing acid with consistent dissolving rates for water treatment.
- Manganese Greensand media is treated siliceous material for treating water containing iron, manganese and hydrogen sulfide through oxidation.
- Anthracite is recommended as a filter medium where additional silica in the water is not desirable and can remove lighter weight turbidity. Anthracite is typically used in applications where silica pick-up is undesireable.
- Activated carbon medium is used to remove taste, odor, organic contaminants, and chlorine as well as being used in many drinking water applications.
- ProSand is based on a rare natural mineral. Its unique properties radically improve the performance and cost of media filtration.
- Filter AG is non-hydrous silicon dioxide with many advantages for the reduction of suspended matter.
- Multimedia is required when maximum quality water is required and unwanted sediment is too small to be removed by standard media. It consists of multiple layers of increasing grain size to remove sediment as small as 10 microns.
Advantages of Multimedia Filtration:
- Relatively inexpensive, no recurring cost of consumables
- Proven process and most tested forms of water treatment
- Systems are robust with no moving parts inside the tanks
- Modular control valves designed for operational flexibility
- Filtration media is inexpensive and long-lasting
- Easily cleaned and maintained
- Resistant to fouling (clogging)
Multimedia Filtration Operating Cycles
Service Cycle - Water flows downward through the media while solids accumulate in the media bed. The purified water passes through to downstream processes.
Backwash Cycle - When the filter begins to clog or when the head loss (pressure drop) through the bed increases, flow rates are reduced. To prevent degradation of water quality, the flow is reversed. This is directed by the control valve(s) to drain, carrying with it, the particulate matter that has built up during service. The required flow is specific to the media and is essential to proper cleaning of the media bed. For media filters, the backwash flow is always higher than the service flow rate.
- 1”-3” Noryl diaphragm valves or butterfly valves for 4” or larger
- Digital stager for filters using diaphragm valves or PLC for butterfly valves
- 115V/1Ph/60Hz power supply
- Stainless steel tank with 100 psi rating
- Top loading port
- Schedule 80 PVC face piping
- PP/PVC sch 80 internal piping and distributor
- Vent and drain ports
- High quality
- Waste water
- Cooling water
- Suspended solids reduction
- Industrial process water
- Storm water
- Iron and manganese removal
- Water features (fountains, etc.)
- Potable (drinking) water
- Swimming pool water
- Irrigation water
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