226 Atlantic Avenue, P.O. 650 • Clayton, NJ 08312 Phone 856-881-2345 Fax 856-881-6859

Email: info@inversand.com • www.inversand.com

GREENSANDPLUS™ TECHNICAL DATA

Removes iron, manganese,hydrogen sulfide, arsenicand radium.

GreensandPlus™ is a black filtermedia used for removing soluble iron, manganese, hydro-gen sulfide, arsenic and radiumfrom groundwater supplies.

The manganese dioxide coatedsurface of GreensandPlus actsas a catalyst in the oxidationreduction reaction of iron andmanganese.

The silica sand core ofGreensandPlus allows it to withstand waters that are low insilica, TDS and hardness without breakdown.

GreensandPlus is effective athigher operating temperaturesand higher differential pressuresthan standard manganese greensand. Tolerance to higherdifferential pressure can providefor longer run times betweenbackwashes and a greater margin of safety.

Systems may be designed usingeither vertical or horizontal pressure filters, as well as gravity filters.

GreensandPlus is a proven technology for iron, manganese,hydrogen sulfide, arsenic andradium removal. Unlike othermedia, there is no need for

extensive preconditioning of filtermedia or lengthy startup periodsduring which required water quality may not be met.

GreensandPlus is an exactreplacement for manganesegreensand. It can be used in COor IR applications and requiresno changes in backwash rate or

GreensandPlus has the WQAGold Seal Certification forcompliance with NSF/ANSI 61.

REACH Registration01-2119452801-43-0020for import to the EU.

Packaging is available in 1/2cubic foot bags or 1 metricton (2,205 lbs) bulk sacks.

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Performance Media forWater Filtration

BED EXPANSION DURING BACKWASHING

GREENSANDPLUS PRESSURE DROP(CLEAN BED)

FLOW RATE (GPM/FT2)

BA

CK

WA

SHR

ATE,

GPM

/FT2

TEMPERATURE °F

PRES

SUR

ED

RO

P, P

SI/F

T

times or chemical feeds.

Physical FormBlack, nodular granules shipped in a dry form

Apparent Density88 pounds per cubic foot net (1410.26 kg/m3)

Shipping Weight90 pounds per cubic foot gross (1442.31 kg/m3)

Specific GravityApproximately 2.4

PorosityApproximately 0.45

Screen Grading (dry)18 X 60 mesh

Effective Size0.30 to 0.35 mm

Uniformity CoefficientLess than 1.60

pH Range6.2-8.5 (see General Notes)

TMaximum emperatureNo limit

Backwash RateMinimum 12 gpm/sq. ft. at 55°F (29.4 m/hr @ 12.78°C)(see expansion chart)

Service Flow Rate2 -12 gpm/sq. ft (4.9m/hr - 29.4 m/hr)

Minimum Bed Depth15 inches (381 mm) of each media for dualmedia beds or 30 inches minimum (762 mm)of GreensandPlus alone.

PHYSICAL CHARACTERISTICS

Catalytic Oxidation (CO) operation is recommended in applications where ironremoval is the main objective in well waterswith or without the presence of manganese.This method involves the feeding of a predetermined amount of chlorine (CI2) or other strong oxidant directly to the rawwater before the GreensandPlus Filter.

Chlorine should be fed at least 10-20 secondsupstream of the filter, or as far upstream of thefilter as possible to insure adequate contacttime. A free chlorine residual carried throughthe filter will maintain GreensandPlus in a con-tinuously regenerated condition.

For operation using chlorine, the demandcan be estimated as follows:

mg/L Cl2 = (1 x mg/L Fe) + (3 x mg/L Mn) +(6x mg/L H2S) + (8 x mg/L NH3)

FILTERED WATEROUTLET

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METHOD OF OPERATION CO

GreensandPlus: Catalytic Oxidation (CO)

RAW WATER INLET

GreensandPlusFilter

GreensandPlusMedia

Oxidant

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The Intermittent regeneration (IR) operation is available for certain applications.Contact your Inversand representative for additional information.

SUGGESTED OPERATING CONDITIONS

Bed TypeDual media: anthracite 15-18 in. (381 mm -457 mm) and GreensandPlus 15-24 in.(381 mm - 610 mm)

Capacity700-1200 grains of oxidized iron and manganese/sq.ft. of bed area based on oxidant demand and operation to iron breakthrough or dp limitations.

BackwashSufficient rate using treated water to produce40% bed expansion until waste water is clear,or for 10 minutes, whichever occurs first.

.

Air/Water ScourOptional using 0.8-2.0 cfm/sq. ft. (15 m/hr - 7 m/hr)with a simultaneous treated water backwashat 4.0-4.5 gpm/sq. ft. (9.8 m/hr -11.03 m/hr).

Raw Water RinseAt normal service flow rate for 3 minutes oruntil effluent is acceptable.

Flow RateRecommended flow rates with CO operationare 2-12 gpm/sq. ft. (4.9 m/hr - 29.4 m/hr).

usually require lower flow rates for equivalent run lengths. Higher flow rates can be considered with very low concentrations of iron and manganese. For optimizing design parameters, pilot plant testing isrecommended.The run length between backwashes can be estimated as follows:

What is the run length for a water containing1.7 mg/L iron and 0.3 mg/L manganese at a4 gpm/sq. ft. service rate:

Contaminant loading= (1 x mg/L Fe) + (2 x mg/L Mn)= (1 x 1.7) + (2 x 0.3)= (2.3 mg/L or 2.3/17.1 = 0.13

grains/gal. (gpg)

At 1,200 grains / sq. ft. loading ÷ 0.13 gpg = 9,230 gal./sq. ft.

At 4 gpm / sq. ft. service rate 9,230/4 = 2,307 min.

The backwash frequency is approximatelyevery 32-38 hours of actual operation.

GENERAL NOTESpH

Raw waters having natural pH of 6.2 or abovecan be filtered through GreensandPlus without pH correction. Raw waters with a pHlower than 6.2 should be pH-corrected to 6.5-6.8 before filtration. Additional alkali should be added following the filters if a pH higher than 6.5-6.8 is desired in the treated water. This pre-vents the possible adverse reaction and forma-tion of a colloidal precipitate that sometimesoccurs with iron and alkali at a pH above 6.8.

Initial Conditioning of GreensandPlus

GreensandPlus media must be backwashedprior to adding the anthracite cap. TheGreensandPlus backwash rate must be a mini-

Fmum of 12 gpm/sq. ft. @ 55° .

After backwashing

is

complete,

the

GreensandPlus must

be

conditioned.

Mix

0.5

gal.

(1.9

L)

of

6%

household

bleach

or0.2 gal (0.75 L) of 12% sodium hypochlorite for

High concentrations of iron and manganese

Disclaimer: The information and recommendations in this publication are true andreliable to the best of our knowledge. These recommendations are offered in goodfaith but without warranty or liability for consequential damage as conditions and method of use of our products are varied and beyond our control. We suggest the user determine the suitability and performance of our products before they are adopted on a commercial scale.

©20

13In

vers

and

Com

pany

(09/

13)

REFERENCES

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226 Atlantic Avenue • P.O. Box 650Clayton, NJ 08312 USA T: 856-881-2345 • F: 856-881-6859 E:info@inversand.com •www.inversand.com

The manufacturing of GreensandPlus is an ongoing, 24/7 process to ensure the highest quality water treatment media.

Initial Conditioning of GreensandPlus

USA USA

every 1 cu. ft. (28.3 L cu. m) of GreensandPlusinto 6.5 gallons (25 L) of water.

Drain the filter enough to add the diluted chlo-rine mix. Apply the diluted chlorine to the filterbeing sure to allow the solution to contact theGreensandPlus media. Let soak for a minimumof 4 hours, then rinse to waste until the “free”chlorine residual is less than 0.2 mg/L. TheGreensandPlus is now ready for service.

American Water Company, CASan Jacinto, CACity of Tallahassee, FLAdedge Technologies, Inc., Buford, GACity of Mason City, ILCity of Goshen, INCity of Hutchinson, KSCity of Burlington, MADedham Water Co., MARaynham Center, MANorthbrook Farms, MDSykesville, MDTonka Equipment Company, Plymouth, MNCity of New Bern, NCOnslow County, NCHungerford & Terry, Inc., Clayton, NJFort Dix, NJJackson Twsp. MUA, NJ

Radium and Arsenic Removal Using GreensandPlus

The GreensandPlus CO process has beenfound to be successful in removing radium andarsenic from well water. This occurs via adsorp-tion onto the manganese and/or iron precipi-tates that are formed. For radium removal, soluble manganese must be present in oradded to the raw water for removal to occur.Arsenic removal requires iron to be present inor added to the raw water to accomplishremoval. Pilot plant testing is recommended ineither case.

Churchill County, NVSuffolk County Water Authority, NYCity of Urbana, OHRoberts Filter Group, Darby, PA

Distributed

by:

REACH Registration01-2119452801-43-0020for import to the EU.

Watergroup, Saskatoon, SK CanadaBI Pure Water, Surrey, BC CanadaSydney, Nova Scotia, CanadaPT Beta Pramesta, Jakarta, IndonesiaPT Besflo Prima, Jakarta, IndonesiaEurotrol, Milanese, ItalyGargon Industrial, Mexico City, MexicoRiver Sands Pty. Ltd., Queensland, AustraliaFiltration Tech, Auckland, New ZealandAlamo Water Poland, Izabeln, PolandAquatrol Company, Moscow, RussiaImpulse Group, St. Petersburg, RussiaBrenntag Nordic, Taby, SwedenEcoFilter Technology, Liechtenstein

International