Monday, August 31, 2015

How to Use a Greensand Filter and Softener to Remove Iron, Manganese and Hardness without Sacrificing Water Pressure

Hey Gerry,

A friend recommended me to you site.  I have high levels of iron and manganese (I emailed you my test report), no sulfur, but also really hard water.  I had a greensand system that worked fine before but it got destroyed in a fire.  I am limited on space in my garage where I want to put the filters.   What do you  suggest? I want to make sure this doesn’t kill my water pressure.

Frederic L.

Dear Frederic,

Thanks for emailing. 

Greensand is a proven media to remove iron and manganese and the one we use lasts a long time and easy to service.  These filters come with automatic backwashing control valves that are able to meter your water usage to save costs on potassium permanganate.  

Following that, we like the 5900 softening system, which uses the same type of control valve as the greensand filter.  The 5900e is a a modern, NSF-certified valve that is user-friendly and easy to set up and maintain. 

It would be best to install a softener in-line to take out the calcium hardness and prevent spotting and white scale and residue.   Use 1” piping to limit any pressure loss through the filters.  The high flow bypass valves we use and properly sized tanks make sure you don’t see a large pressure drop across the system.

The result of using this combination of filter systems would be clean, soft, non-staining water.  I am including more information on the recommend equipment below:

Greensand Iron Filter 5900e 1.5CFGreensand Iron Filter 5700E, 1.5 CF Size

Heavy-duty greensand system featuring a very user friendly control valve.  Versatile valve features fully adjustable backwash and rinse cycle and time-tested hydraulically balanced piston assembly provides years of trouble free service!  Backwash rate for this is 5 gpm.
Dimensions: 10” diameter x 55” height with valve; Potassium permanganate tank is 10.5” diameter x 16” high
Click here to know more about this product.

Excellent Warranty: 5 years on the control valve & 10 years on the mineral tank.

Potassium permanganate:

Potassium Permanganate 
This is required to regenerate the Greensand media and keep it working.

Click here to know more about this product.

Softener 5900 Series, 48K Size      

Softener 5900e 48K
Includes 1 inch or 3/4 inch pipe connectors; by-pass valve; 1.5 cubic feet of high-grade softener resin; heavy-duty brine tank with salt-grid; and 165 Series NSF Certified digital metered-regeneration control valve.

Specifications and Features: High-grade softening resin for maximum performance. Filter tank is NSF certified: one piece seamless polyester construction for long life. Max pressure recommended is 100 psi.

Click here to know more about this product.

10” x 48” Tank

POSTFILTER:  Whole-House Big Blue 50 / 5 Micron filter, 10” x 4.5

Big Blue 5 Micron 10  10 GPM 1  NPTComplete Big Blue Filter Assembly, 1” inlet and can filter at up to 10 gallons per minute maximum flow rate.  Excellent filter for cleaning and polishing all water for your home.

Comes with wall mounting bracket, filter wrench, one 50/5  micron cartridge, and filter assembly.

Please see the diagram below:

Iron Filter - Greensand  Softener Diagram