المواصفات العامة للاوساط الترشيحية (الرمل الزجاجى/الكربون النشط/الرمل الاخضر المنجنيزى/الالومينا النشطة/البيرولوسيت/الزلط/الرمل الجرانيتى

SILICA SAND
Silica Sand is carefully selected, double-washed, dried, and double screened to specific sizes to meet the demanding conditions present in filtration systems.

The filter sand is custom-sized to ensure media compatibility during filtering and backwashing cycles.

Silica sand meets or exceeds all American Water Works specifications AWWA-B100 standards (latest edition).

Bulk Density
84 pounds per cubic foot (dry basis)

Colour

Tan
Sphericity
0.7 – 0.9

Roundness
0.4 – 0.5

Moh Hardness
6.5 - 7

Acid Solubility
Nil

Specific Gravity
2.60 – 2.65

Effective Size
Available from 0.30 mm to 1.0 mm (in 0.1 mm increments)

Uniformity Coefficient
1.7 down to 1.4

موضوع: الكربون النشط الأربعاء مارس 20, 2013 6:14 am

ACTIVATED CARBON

Granular Activated Coal (GAC) is a premium grade granular carbon.

GAC is specially produced with a broad range of pore sizes to enhance
absorption of colour bodies and organic impurities from process streams.

GAC is
acceptable for food and pharmaceutical applications.

It is also used for
purifications of acids, caustic liquors, plasticizers, soda ash, fatty acids, and other
applications.

GAC can be subject to the rigors of hydraulic transfer and thermal
reactivation while maintaining minimal losses.

GAC is made from a select grade of coal which is milled, compacted sized
and thermally steam activated to yield a strong dense product with a large
surface area.

The pore structure is carefully controlled during the activation
process to facilitate absorption of both high and low molecular weight organic
impurities.

Bulk Density 28 pounds per cubic foot

Moh Hardness 2.5-4.0

Uniformity Coefficient Less than 1.5
Acid Solubility Less than 2% by weight (AWWA - 5% max.)

Iodine Number – mg/gm 1000 minimum

Moisture (as packed) 2% maximum

PYROLUCITE CATALYTIC

FILTER MEDIA
Pyrolucite Catalytic filter media has been used for many decades in Europe
where it is the preferred filter media when dealing with waters containing soluble
iron & manganese.

Many well water supplies contain iron and/or manganese.

Iron and manganese
in a water supply can impart an astringent, metallic taste to the water; stain
fixtures and laundry and encourage growth of iron bacteria in water lines.

Generally, it is necessary to remove iron and manganese (Fe/Mn) to low levels.
(iron to less than 0.3 mg/L, manganese to less than 0.05mg/L)

Pyrolucite Catalytic filter media consists of solid granules of pyrolusite
dispersed in a matrix of crushed quartz sand.

The ratio of the pyrolucite and
angular sand blend is dependent on the treatability of the source water.

Other
products used in Fe/Mn removal rely on a synthetic coating of MnO2 on a base
particulate, making them prone to coating loss through backwash attrition.

Iron and manganese removal, particularly manganese removal, is very sitespecific
and a pilot filtration test is strongly recommended to confirm suitability.

Bulk Density 100 pounds per cubic foot

Specific Gravity 3

Sieve range 20 - 40

Moh Hardness 2.5 - 3

Appearance Black, granular

FILTER GARNET SAND

Garnet filter sands are used in many municipal and industrial water filter
systems because of the natural high density and inertness of the garnet.

The high density allows the garnet to maintain its position in a multi-media filter
bed.

maintains an inventory of the common garnet sand sizes used and has
quick access to larger quantities upon request.

Bulk Density Ranges from 120 lbs/ft³ to 140 lbs/ft³

depending on size

Specific Gravity 3.8 – 4.2

Effective Size* Available from 0.2 mm to 2.20 mm

Moh Hardness 7.5

Uniformity Coefficient 1.2 – 1.6 depending on size

موضوع: زلط المرشحات الأربعاء مارس 20, 2013 6:38 am

FILTER GRAVEL

Filter Gravel is selected for its inertness, backwash distribution characteristics
and conformity to AWWA B100 specifications.

It is washed, dried and customsized
to almost any specification.

Bulk Density Varies from 92 - 100 pounds per cubic foot (dry
basis) depending on size

Specific Gravity 2.6

Moh Hardness 6.5

Acid Solubility All sizes within AWWA-B100 specified limits

Particle Shape Generally rounded

Percent Crushed All sizes much less than AWWA-B100 specification
limits

Available Sizes carries stock in all standard sizes from 50.0 mm
(2") down to 1.5 mm (1/16")

موضوع: الرمل الاخضر الأربعاء مارس 20, 2013 6:44 am

manganese green sand

ADVANTAGES

• Iron reduction over wide pH range

• Effective reduction of hydrogen sulfide in addition to iron and/or manganese

• No harmful effects from a chlorine feed

• Low attrition for long bed life

PHYSICAL PROPERTIES

• Color: Black

• Bulk Density: 85 lbs./cu. ft.

• Specific Gravity: 2.4-2.9

• Effective Size: 0.30-0.35 mm

•Uniform Coefficient: 1.6

• Mesh Size: 16-60

• Attrition Loss Per Year: 2%

CONDITIONS FOR OPERATION

•Water pH range: 6.2-8.5

• Maximum water temperature: 80°F/26.7°C

• Bed depth: 30 in. • Freeboard: 50% of bed depth (min.)

• Regeneration: 1.5-2 oz of KMnO4 by weight per cu. ft.

• Service flow rate: 3-5 gpm/sq. ft., 8-10 gpm/sq. ft. intermittent flow possible

• Backwash flow rate: 10-12 gpm/sq. ft.

• Backwash bed expansion: 40% of bed depth (min.)

• Maximum practical limit of iron(Fe++) or manganese (Mn++) in raw water: 15 ppm

• Maximum practical limit of hydrogen sulfide (H2S): 5 ppm

CAPACITY PER CU. FT.

• Iron alone600 grains (10,000 gal. of water containing 1 ppm iron/cu. ft.)

• Iron and manganese400 grains (7,000 gal. of water containing ½ ppm iron and ½ ppm manganese/cu. ft.)

• Hydrogen sulfide175 grains (3,000 gal. of water containing 1 ppm hydrogen sulfide/ cu. ft.)

active alumina

Specifications

active alumina 99.9%

1.Size:1-2, 2-3, 3-5, 4-6, 5-7,6-8mm

2.MOQ:1000kg

3.Active:56-62%
4.LOI:6-8%

active alumina 99.9%

with super quality 1-2mm, 2-3mm, 3-5mm, 4-6mm, 5-7mm, 6-8mm

Activated alumina ball has much micro-paths, so the specific surface is large. It can be used as absorbent desiccant and catalyst carrier. It is also a kind of trace water desiccant and the pole-molecular absorbent, according to the absorbed molecular polarization, the attachment force is strong for water, oxide, acetic acid, alkali etc.

Activated alumina defluorinated just as the anion exchange resin, but the selectivity is much strong.

The defluorination effect of the actived alumina is good.

The capacity is stable, the absorbed fluorine is 6400g/cm3.

It has high strength, low abrasion, no soften in water, no expansion, no powdery, no crack. It can widely used in the deep drying of cracked gas, ethylene and propylene, hydrogen-generation, air separation, instrument air drying and fluorine treatment for H2O2, also in the absorbing pollution material, such as H2S, SO2, HF and paraffin in the water gas, especially in the drinking water defluorination..

Molecular Formula: Al2O3 • nH2O (0<N≤0.8)

Physical Properties

Appearance

White, Sphere, No Odor, Insoluble In Water, Innocuous

Crystal Type
x-p
x-p
y
y
x-p

Chemical Composition
Al2O3 %
≥93

Na2O %
≤0.3

LOI
%
6-8

Bulk Density
g/ml
0.68-0.72

Surface Area
m2/g
≥300

Pore Volume
ml/g
0.30-0.45

Static Absorption (RH=60%)
%
Water Absorption
17-19
Fluorine Absorption
0.12
Water Absorption
50
Water Absorption
50-70
Water Absorption
17-19

Active
%

56-62

Attrition Loss
%
≤1.0

Crushing Strength (N/Particle)
0.4-1.2
≥30

1-2
≥40

2-3
≥60

3-5
≥100

4-6
≥120

5-7
≥160

6-8
≥180