Greensand Filters

• Compact Footprint
• Iron and Manganese Removal
• Alternative Cost Effective Treated Media

WesTech manganese greensand systems offer a proven, efficient approach to water treatment for the removal of iron and manganese. When used a water filter "bed", it oxidizes soluble iron and manganese to insoluble oxides and simultaneously filters them out of the water.  When used as pretreatment equipment, these filters will prolong the life and efficiency of reverse osmosis membranes. Potassium Permanganese replacement to the greensand is accomplished by batch or continuous feed regeneration. 

WesTech filters are shipped completely assembled except where noted. Hydrostatic pressure testing, operation, and inspection of each filter prior to shipment ensures quality performance when placed in operation.  As a result, job site installation requirements and start up expenses are kept to a minimum.  Trained field service representatives are available for start-up assistance. 

The carbon steel vessel is constructed in accordance with the provisions of the ASME Boiler and Pressure Vessel Code.  The exterior of the vessel

is commercially sandblasted followed by one shop coat of rust inhibitive primer.  And the is coated with a NSF potable water coating.  The vessel is fitted with lifting lugs for handling and placement.  The vessel is provided with one, 12 inch by 16 inch, elliptical manway.  The 24 inch and 30 inch diameter filters are provided with one 6 inch by 8 inch hand hole in the top head only. 

MEDIA

• Manganese Greensand 
• Treated Media 

The vessel is provided with an effluent/waste collection header, and an underdrain header or plate with the required number of connections for the underdrain.  Gravel, compatible with the underdrain system, is provided. 

All automatic valves are wafer-type butterfly valves and provide a drip-tight shut-off. Valve bodies are cast iron or steel, and rubber-seated.  Valve discs are corrosion resistant, designed for smooth flow characteristics.

The UL and ETL listed* control panel houses all of the electrical devices required for automatic control of the filtration system.  The filter control is perform the following automatic functions: 
 

• Automatic backwash of the filter takes place under high filter headloss conditions with provisions for manual override. All cycles of the automatic backwash sequences are fully adjustable on a cam timer or PLC.
• A filter headloss indicator is supplied to predict the approaching backwash cycle.
• Running lights are mounted on the front of the control panel to indicate when the filter is operating (green light) or backwashing (amberlight).