GreensandPlus – Urbans Aqua

GreensandPlus™

GreensandPlus is a proven technology for iron, manganese, hydrogen sulfide, and arsenic removal. GreensandPlus is an exact replacement for Manganese Greensand.

Unlike Greensand, GreensandPlus is regenerated with chlorine or ozone not potassium permanganate.

GreensandPlus media consists of a solid silica sand core with thermally bonded coating of manganese dioxide.

Features

Iron and Manganese Removal
- Soluble iron and manganese are removed by contact oxidation directly on the GreensandPlus grains.
Hydrogen Sulfide Removal
- GreensandPlus directly oxidizes sulfide and catalyzes the oxidation reaction.
Arsenic and Radium Removal
- GreensandPlus can be used to remove arsenic and radium from ground water in the presence of iron and manganese respectively. (Contact UA for further details.)
Simple softener like regeneration with chlorine.

Operation

Where iron removal is the focus, catalytic oxidation operation is recommended.
GreensandPlus can be used for Intermittent or Continuous Regeneration.
- Intermittent Regeneration (Regenerate, place in service) Point of Entry Residential Applications
- Soluble iron and manganese are removed by contact oxidation.
GreensandPlus directly oxidizes sulfide and catalyzes the oxidation reaction. The resultant precipitates are removed by filtration in the GreensandPlus bed.
Regenerate prior to the exhaustion of the GreensandPlus is recommended
Continuous Regeneration – Municipal Applications
According to the manufacturer, “in some installations, better performance may be achieved by oxidizing soluble iron, manganese, hydrogen sulfide and arsenic prior to the GreensandPlus filter”.
Continual feed of chlorine ahead of the filter causes the contaminants to oxidize and drop out of solution. The GreensandPlus then filters out the contaminants.
It is necessary to maintain a chlorine residual throughout the process.

GreensandPlus Properties

Mesh Size	18 x 60
Effective Size	0.30 - 0.35 mm
UC	<1.6
pH Range	6.2 - 8.5
Density	80 lbs/cf
Service Flow Rate	2-12 gpm/sq.ft.
Backwash Rate	12 gpm/sq.ft. Minimum
Minimum Bed Depth	15" Dual Bed 30" Single Bed
Bed Expansion	40%

Mesh Size
18 x 60

Effective Size 0.30 - 0.35 mm

UC <1.6

pH Range 6.2 - 8.5

Density 80 lbs/cf

Service Flow Rate 2-12 gpm/sq.ft.

Backwash Rate 12 gpm/sq.ft. Minimum

Minimum Bed Depth 15" Dual Bed
30" Single Bed

Bed Expansion 40%

Comparison Chart - GreensandPlus, Katalox-Light, PyroloxAdvantage

Parameter	Greensand Plus	Katalox-Light	PyroloxAdvantage
Weight lbs/cf	90	66	84
Standard Package	0.5 cf bag 55 bags/pallet	1 cf bag 40 bags/pallet	0.5 cf bag 48 bags/pallet
% Manganese Dioxide	<5%	>9.5%	12.5%
Service Flow Rate	2-12 gpm/sq.ft.	6-12 gpm/sq.ft.	2-12 gpm/sq.ft.
Backwash Flow Rate @ 55° F	12 gpm/sq.ft. (Note A)	12 gpm/sq.ft. (Note A)	12 gpm/sq.ft. (Note A)
Regeneration	Intermittent or Continuous - Chlorine or Ozone	During backwash (Note B)	Intermittent or Continuous - Chlorine or Ozone

Parameter
Greensand Plus Katalox-Light PyroloxAdvantage

Weight lbs/cf 90 66 84

Standard Package 0.5 cf bag
55 bags/pallet 1 cf bag
40 bags/pallet 0.5 cf bag
48 bags/pallet

% Manganese Dioxide <5% >9.5% 12.5%

Service Flow Rate 2-12 gpm/sq.ft. 6-12 gpm/sq.ft. 2-12 gpm/sq.ft.

Backwash Flow Rate @ 55° F 12 gpm/sq.ft. (Note A) 12 gpm/sq.ft. (Note A) 12 gpm/sq.ft. (Note A)

Regeneration Intermittent or Continuous - Chlorine or Ozone During backwash (Note B) Intermittent or Continuous - Chlorine or Ozone

Note A: Backwash rates vary – increase for higher temp.; decrease for lower temp. (Contact Urbans Aqua for more information.)
Note B: If insufficient O2 use Chlorine, Air Injection or Ozone

Systems Incorporating GreenSandPlus