2025 Nelsen Corporation Catalog - Catalog - Page 121
Greensand Plus™ 4
Greensand Plus™ is a purple-gray filter media used for removing
soluble iron, manganese, hydrogen sulfide, arsenic and radium from
well water supplies.
Like its sister product manganese greensand, the substrate media
has a manganese dioxide coated surface that acts as a catalyst
in the oxidation-reduction reaction of iron and manganese. The
difference between Greensand Plus™ and Manganese Greensand is
in the substrate that forms the core of the media and the method by
which the manganese dioxide coating is attached to that substrate.
Greensand Plus™ has a silica sand core and the coating is fused to it
while Manganese Greensand has a glauconite core and the coating
is ionically bound to it.
The silica sand core of Greensand Plus™ allows it to better withstand
operating conditions in waters that are low in silica, TDS and
hardness. Thus, if you currently are using manganese greensand and
are feeding sodium aluminate, you will likely be able to eliminate the
aluminate feed by switching to Greensand Plus™. Also, Greensand
Plus™ can withstand higher operating temperatures and higher
differential pressures than can manganese greensand. The higher
differential pressure may allow for a longer run length, but, if nothing
else, allows for more operational margin of error.
Along with the added benefits comes the fact that Greensand Plus™
is an exact replacement for manganese greensand. It can be used
in CR and IR applications and requires no changes in backwash
rate or times or chemical feeds. Greensand Plus™ has received the
WQA Gold Seal Certification for compliance with NSF/ANSI 61. It is
available in easy-to-handle 1/2 cubic foot bags.
Greensand Plus™ is NOT shipped in a regenerated form; therefore
it is necessary, prior to use, to regenerate it contacting the bed for a
minimum of 4 hours.
Certified by WQA
according to NSF/ANSI 61
for Material Safety
Capacity/Cu. Ft.:
Iron Alone .............................. 550 gr. (10,000 gal. of water containing
.................................................................................... 1 ppm iron/cu. ft.)
Iron and Manganese ................................. 400 gr. (7,000 gal. of water
...................................................................containing 1/2 ppm iron and
................................................................... 1/2 ppm manganese/ cu. ft.)
Hydrogen Sulfide ....................................... 175 gr. (3,000 gal. of water
............................................ containing 1 ppm hydrogen sulfide. cu. ft.)
Advantages:
• Iron removal over wide pH range
• Effective removal of hydrogen sulfide in addition
to iron and/or manganese
• No harmful effects from a chlorine feed
• Low attrition loss for long bed life
Physical Properties:
Color ..................................................................Black nodular granules
Density .................................................................................... 85 lbs/ft3
Effective Size .................................................................0.30 - 0.35 mm
Uniformity Coefficient ........................................................................1.6
Mesh Size ................................................................................... 18 X 60
Attrition Loss Per Year ...................................................................... 2%
Conditions for Operation:
Raw Water pH .......................................................................... 6.2 - 8.5
Bed Depth .....................................................................................30 in.
Freeboard.................................................................................35 - 50%
Service Flow Rate .........................................2 – 12 gpm/ft2 (5-12 m/hr)
Backwash Flow Rate .................... 12 gpm/ft2 at 55ºF (30 m/hr at 13ºC)
Maximum Temperature .............................................................No Limit
Maximum Practical Limit of Iron (Fe++) or
Manganese (Mn++) In Raw Water ............................................. 15 ppm.
Maximum Practical Limit of Hydrogen Sulfide (H2S) ..................5 ppm.
Greensand Plus™ (for Iron Removal)
The silica sand core of Greensand Plus™ allows it to better withstand operating conditions in waters
that are low in silica, TDS and hardness. Thus, if you currently are using manganese greensand and
are feeding sodium aluminate, you will likely be able to eliminate the aluminate feed by switching to
Greensand Plus™ . Also, Greensand Plus™ can withstand higher operating temperatures and higher
differential pressures than can manganese greensand. The higher differential pressure may allow for a
longer run length, but, if nothing else, allows for more operational margin of error. 44 lbs. per bag.
Pallet quantity - 55 bags per pallet
MANG-PLUS
.52 Cubic Foot Bag (44 lbs.)
MANG-PLUS-25-BOX
.26 Cubic Foot Box (22 lbs.)
MANG-PLUS-50-BOX
.52 Cubic Foot Box (44 lbs.)
Call Nelsen Toll-Free from Anywhere in the U.S. - 800.362.9686
All prices and products subject to change without notice. ©Nelsen Corporation
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Resins, Media & Chemicals
Greensand Plus™
