Greensand plus (green sand)
Mesh number: 18 X 60
Presentation: 0.5 ft3 (20 kg) bags
Color: light brown to reddish brown
Density: 100 lbs / ft3
Mesh size: 18 × 35
Effective size: 0.45-0.55mm
Uniformity coefficient: 1.6 or less
Acid Solubility: 0.3 - 1.6%
Greensand is a purple-black medium used to remove iron, manganese and hydrogen sulfide from water. It can also remove radium and arsenic. It is processed with glauconite and zeolite minerals.
Manganese dioxide acts as a catalyst in the oxidation-reduction reaction of iron and manganese, generating its precipitation in the medium. This material must be regenerated either in continuous or intermittent operation and can use chlorine or permanganate for its regeneration.
Additionally, green sand is manufactured under the American standards ANSI / NSF Standard 61 for components in drinking water treatment.
Greensand plus uses manganese dioxide coated silica sand 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 filter media and the method by which the manganese dioxide coating is attached to that substrate. Greensand Plus uses silica sand that is strongly fused to it, while Manganese Greensand has an ionically bonded glauconite core, being weaker.
Greensand Plus' silica sand base allows it to better withstand operating conditions in low silica, TDS and hardness waters. So if you are currently using green manganese sand and are feeding sodium aluminate, you will probably be able to eliminate the aluminate feed by switching to Greensand Plus. Also, Greensand Plus can withstand higher melting temperatures and high pressure differentials. High pressure differentials can allow runs for longer periods.
Greensand Plus is an exact replacement for Greensand Manganese Green Sand. The green sand filters (greensand plus) are calculated according to the needs of each water by our team.
Iron removal throughout the pH range
Effective removal of hydrogen sulfide in addition to iron and / or manganese
You can use chlorine as a regenerant.
Low wear loss for long bed life.
Water pH - 6.2 to 8.5
Bed depth - 30 inches
Bed space - 35 - 50%
Service Flow - 2 - 5 gpm / sq. ft (5-12 m / h)
Backwash flow - 12 gpm / sq. ft at 55º F (30 m / hr at 13º C)
Maximum temperature - No limits
Maximum practical limit of iron (Fe + +) or manganese (Mn + +) In raw water - 15 ppm.
Maximum practical limit of hydrogen sulfide (H2S) - 5 ppm.