BEAR RIVER ZEOLITE

 
email: tfl3543@blackfoot.net

BEAR RIVER ZEOLITE CO., INC.
4005 East Glendale Road
Preston, ID 83263

tel: 406-827-3523
fax: 406-827-3543



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PRODUCT DESCRIPTION

  • Size: 14 x 40 mesh

  • Weight: 55 pounds per cubic foot

  • Sieve analysis: Uniformly coefficient 1.8

  • GRAS: Classified “GRAS” generally regarded as safe (21 CFR Part 182.2729; 40 CFR Part 180.1001)

  • Surface Area: Surface area 24.9 square meters/gm

  • Hardness: Low clay, hard, abrasion resistant
     

COMPARISON OF ZEOLITE FILTER PERFORMANCE VS CONVENTIONAL MEDIA: Pressure Vessels

 

FILTER

MEDIA

BED

COMPOSITION

FILTRATION

RATING (nominal)

SOLIDS LOADING

CAPACITY

Sand

(6-12 gpm/ft2)

20 x 40 mesh

~20µ

1X

Sand/Anthracite

(6-12 gpm/ft2)

#1 anthracite (66%)

20 x 40 mesh sand

(34%)

~15µ

1.4X

Multimedia

(10-12 gpm/ft2)

#1 anthracite (66%)

20 x 40 mesh sand

(30%)

# 50 garnet (15%)

# 16 garnet (10%)

~12µ

1.6X

Zeolite*

(10-20 gpm/ft2)

14 x 40 mesh
(100%)

~5µ

2.8X

 

COMPARISON OF ZEOLITE FILTER PERFORMANCE VS CONVENTIONAL MEDIA: Gravity Flow Beds

 

FILTER

MEDIA

BED

COMPOSITION

FILTRATION

RATING (nominal)

SOLIDS LOADING

CAPACITY

Sand

(2 gpm/ft2)

20 x 40 mesh

~20µ

1X

Sand/Anthracite

(2 gpm/ft2)

#1 anthracite (66%)

20 x 40 mesh sand

(34%)

~15µ

1.4X

Zeolite*

(4 gpm/ftdesign)

14 x 40 mesh

~5µ

2.6 - 2.8X

             

 

THEORY OF ZEOLITE FILTER MEDIA

The advantages of using BRZ™ in physical filtration systems include the following:

  • The high internal and external surface area of BRZ™ (@25m2/g) exceeds that of quartz by more than 10 times.

  • BRZ™ pore space permeability for water transmission through the grains or fragments is 100% compared to non-permeable quartz grains.

  • BRZ™ will tend to make slightly acidic (e.g. pH - 5.5-6.0) water more near neutral.

  • The amount, or layer thickness of BRZ™ in the filtration systems can be much thinner (smaller volume) than quartz sand systems - because of the high “surface area and pore space” of BRZ™.

  • BRZ™ fragments tend to be discoid shaped, rather than round, thus presenting a large surface area (per unit of mass) (see diagram below).

  • The density of 2-4 mm granules of BRZ™ is about 55-60 lb/ft3, which is about half of that of quartz grains of similar size. Thus the volume of one ton of BRZ™ is twice that of quartz sand.

WATER PATHS FOR QUARTZ VERSUS ZEOLITE IN FILTRATION

                           
 

BENEFITS

  • BETTER FILTRATE CLARITY: Typical sand/anthracite filter beds have a 12 to 15 micron nominal filter rating. BRZ™ typically would have a nominal filer rating of less than 5 microns. This property greatly reduces the effluent turbidity, generally measured in national turbidity units (NTUs).

  • INCREASED FLOW RATES IN GRAVITY SYSTEMS: In a sand/anthracite filter media system the flow rate is typically 1.2 to 2.0 gpm per square foot. In a BRZ™ filter media system, the flow rate is typically in the 4.0 gpm per square foot range.

  • INCREASED FLOW RATES IN PRESSURE VESSEL SYSTEMS:  In a sand/anthracite pressure vessel filter system the flow rates are typically 6 to 7 gpm per square foot. In a BRZ™ pressure vessel filter system the flow rates are typically in the 12 to 15 (and sometimes 20) gpm per square foot range.

  • LOWER CAPITAL REQUIREMENT TO INCREASE FILTRATION CAPACITY: Generally, the capacity of a filter plant can be doubled with no increase in the plant by switching the filter media to BRZ™.

  • FEWER BACKWASH CYCLES: BRZ™ requires only one half of the backwash cycles that are required by sand/anthracite.

  • LESS BACKWASH WATER: The fewer backwash cycles generally cut the amount of backwash water by one third to one half. This means treating less backwash water and greater plant capacity.

  • GREATER LOADING DUE TO GREATER SURFACE AREA: BRZ™ generally has 6 to 7 times the surface area as sand. This makes BRZ™ a much better filter media with greater holding capacity.

  • REMOVAL OF HEAVY METAL CATIONS, NITROGEN, CHLORAMINES, CERTAIN ORGANIC HYROCARGONS, AND MANY OTHER CONTAMINANTS.

  • LONG FILTER BED LIFE: The anticipated filter bed life of BRZ™ is 10 years.

  • LAND APPLICATION OF SPENT BRZ™ FILTER BED: Under most conditions, BRZ™ filter bed can be applied to lawns and gardens as soil amendments.

  • SIMPLER HANDLING: Zeolite, monomedia, beds simplify materials handling, shipments and bed loading.

  • BETTER CLEANING: Active, dynamic, bed tumbling and mixing during backwash efficiently cleans bed granules.

APPLICATIONS

  • Sand/anthracite and multimedia bed replacement

  • Surface and ground water filtration.

  • Economical filter beds upstream to RO and Nano-membranes.
     

BEAR RIVER ZEOLITE FOR PHYSICAL FILTRATION BARRIER TO PATHOGENS SUCH AS BACTERIA AND BACTERIAL SPORES

Physical filtration barriers for accumulation or collection of microorganisms in water that endanger human health have been in focus during the last several years. BRZ™ will be an ideal collector of pathogens such as Giardia, cryptosporidium, and other bacteria and their spores. Most of these organisms and their spores are in the size range of 0.5-10 micrometers (microns). In contrast, the water permeable pores in BRZ™ are mostly smaller than .05 microns; therefore the zeolite fragment or granule can “surface collect” a high percentage of these microorganisms while the water passes through the zeolite fragment.

The U.S. drinking water standards for microorganism pathogens, and turbidity can be most easily met using a natural, relatively low-cost material, such as BRZ™ rather than ”sand” which is chiefly quartz grains.

 

 

 

Figure 1. SEM photomicrograph of a Bear River Zeolite granule (ChemSorbŇ Filter Granules) showing micromineral, projections on the surface. [Note the 10m calibration bar at the upper left]. The micro-projects effectively trap suspended solids in water.

 

 

 

 

FIGURE 2 – High magnification (SEM) of a Bear River Zeolite granule (ChemSorbŇ Filter Granule) showing detail of the mineral, micro-projections. [Note the calibration bar at the upper left].