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Starke Aqua Care Technologies 6
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Water Filtration Media

Water Filtration Media
Manufacturer and supplier of Water Filtration Media like Filter Anthracite, Iron Removal Media, Water Filter Gravel, Support Pebble, Activated Alumina, Activated Carbon and White Calcite.

Activated Alumina

Activated Alumina

We are providing Activated Alumina, which is a widely used filtration media. It is used to treat ores and works by making them highly porous and absorptive. These are effective in removing the excess quantities of fluoride, arsenic & selenium and variety of other contaminants for the water. In order to maintain the purity levels and allow the filtered water to remain effective, appropriate regenerate such as alum or acid needs to be added or periodic cleaning has to be performed.

Technical specifications:

  • Product: activated alumina
  • Appearance: white colored balls
  • Size: 3 -5 MM
  • Surface area: 390 M2/gm
  • Pore volume: 0.42 cc/gm
  • Bulk density: 865 Kg / cm3
  • Bed crushing strength: 93%
  • Loss on attrition: 0.1%

 

Adsorption capacity:

  • 1.4 g of fluoride for 100 g of media
  • 15% RH: 6-8
  • 60% RH: 23.6%

 

Chemical analysis;

  • Al2O3: 93 % Min.
  • Na2O: 0.65 %
  • Fe2O3: 0.054 %
  • SiO2: 1.23%
  • Loss on ignition (1000 C): 6-8

Iron Removal Media

Iron Removal Media

We are offering superior grade of Iron Removal Media or Manganese Greensand, which uses oxidation and filtration to reduce iron, manganese and hydrogen sulphide from water. It is formulated from glauconite greensand and is effectively used to remove the traces of iron from the water and provides pure water. Water Treatment is done using the following procedures:

  • On contact with higher oxides of manganese on the greensand granules, the soluble iron and manganese are oxidized and precipitated
  • The hydrogen sulphide gets reduced by oxidation to an insoluble sulphur precipitate
  • Precipitates are thereafter filtered and removed by back-washing
  • When the oxidizing capacity power of the Manganese Greensand bed gets exhausted, then it has to be regenerated by using weak potassium permanganate (KMnO4) solution, which helps in restoring the oxidizing capacity of the bed

Technical Specifications:

Color Dark / Black Brown
Apparent Density 1.35 g/ml
Effective Size 0.8-1.5 mm
Uniformity Coefficient <1.7
Specific Gravity 2.4
PH 6.5-8.5
Maximum Pressure Drop 0.85 BAR
Backwash Flow Rate 15 to 25 m3/m2/hr
Filtration Rate 9m3/m2/hr
Minimum Bed Depth 100 CM
Freeboard 30-50 %
Capacity 1.2 gm/ 1 of Fe
Moisture < 1%
Hardness 5-6 Mohs Scale
Packing 1 Cu.ft/ Bag (38 Kgs)
Regeneration 57 gms of KMnO4by weight per cu.ft

Water Filter Gravel

Water Filter Gravel

The range of Water Filter Gravel and Support Pebble that we offer, is spherical in shape and allows even distribution in support beds and good flow. It is quite similar to Filter Sand in properties, but the only difference is its shape. These are free from calcium and are very effective in the case of softeners, as this helps in maintaining the quality. Support gravel acts as a support for the filter media and forms the lower levels of the filter bed. Further, for supporting the media, the size needs to be calculated and the correct gradation is required. Water Filter Gravel or the Support Pebble is ideal for filtration as it provides high purity and consistent quality. These are double washed to remove all clay, shale and inorganic impurities and thus, ensure a clean and quality output.

Comparison of the Physical Properties:


Washed & Graded Water Filter
Gravel/Support Pebble
Gravel (General Grade)
Color:
  • Yellow/brown
  • Grey/Off White
Shape:
  • Spherical
  • Sub-Angular
Hardness:
  • 7-8 on MOH scale
  • 6 - 7 on MOH scale
Bulk Density:
  • 1680 kgs per cubic meters
  • 1590 kg per cubic meters
Specific Gravity:
  • 2.65
  • 2.6


Following are the key specifications:
Contents % Filter Sand Filter Gravel/Support Pebble Silica Sand
Silica (SiO2) 96.07 92.87 94/99
Iron Oxide (Fe23) 1.57 3.42 0.05
Loss on Ignition (L.O.I.) 0.89 1.15 0.18
Aluminum Oxide (Al23) 0.7 1.45 0.12
Magnesium Oxide (MgO) 0.34 0.6 Traces
Calcium Oxide (CaO) 0.23 0.24 Nil
Titanium Dioxide (TiO2) 0.06 0.04 -
Sodium Oxide (Na2) 0.05 0.05 -
Potassium Oxide (K2) 0.04 0.06 -
Sulfur Trioxide (SO3) 0.04 0.04 -
Barium Oxide (BaO) 0.01 0.01 -

 

Activated Carbon

Activated Carbon

We are engaged in offering superior grade Activated Carbon, which appears black and is granular. This variety of Granular Activated Carbon (GAC) is very popular among the clients for the purity levels it generates and the quality of treated water. It effectively removes excess chlorine, unwanted taste, color, odor and sediments organics from the water. Following are the features of our product range:

  • High carbon-low ash content
  • Imparts a high polish to the filtered water
  • Large granular surface area which has tremendous capacity to absorb impurities resulting in clean and fresh water

Conditions for Operation:
  • The Water that is to be filtered should rather be free of oil and suspended matter
  • Water should be relatively free of iron and turbidity for maximum service life
  • Water pH range is wide
  • Bed depth is 26-30 in
  • Free board: 50% of bed depth (min.)
  • Service-flow rate: 5 gpm/sq. ft.
  • Backwash fl ow rate: 10-12 gpm/sq.ft.
  • Upon installation, backwash to remove carbon fines before placing unit into service

Following are the technical specifications (Standard grades):
Properties SGC-500 SGC-600 SGC-800 SGC-900 SGC-1000
Moisture %max 5 5 5 5 5
Hardness Min 85 85 95 95 95
Ph
08/11/10 08/11/10 08/11/10 08/11/10 08/11/10
Iodine Adsorption Min 500 600 800 900 1000
Bulk Density
0.55± 0.1 0.55± 0.1 0.55± 0.1 0.55± 0.1 0.55± 0.1
Ash %max 5 5 5 5 5
Surface Areas Min 600 700 800 1000 1100
CTC Adsorption Min 25 45 45 60 65

 


 

Calcite

Calcite

We provide our clients superior quality White Calcite, which is an excellent Water Treatment media. It is found naturally as calcium carbonate, and is widely used for its self-limiting property. On proper application, it does not correct the pH under normal conditions, but rectifies it just so that non-corrosive equilibrium may be reached. In the typical plumbing systems, copper, lead and other metals are found, therefore, by adding Calcite the calcium carbonate present in the acidic water is slowly dissolved which reduces the potential leaching.

 

In order to maintain the high service rates, stop occurrence of packing and reclassifying the bed, periodic back-washing is required. Since, Calcite gets gradually depleted therefore, depending on pH value, the state of the water chemistry and the service flow, it has to be sporadically replenished. But, use of Calcite increases the hardness as calcium carbonate neutralizes the water therefore, after the neutralizing filter process the use of softener becomes necessary.

Physical Properties:

  • Color: Grey white

  • Bulk Density: 90lbs./cu.ft.

  • Mesh Size: 16x40

  • Specific Gravity: 2.7

  • Effective Size: 0.4 mm

  • Uniformity Coefficient: 1.5

  • Hardness: 3.0 (Mohs scale)

 

Conditions for Operation:

  • Recommended with gravel support bed
  • Water pH range: 5.0-7.0
  • Bed depth: 24-30 in.
  • Freeboard: 50% of bed depth (min.)
  • Backwash rate: 8-12 gpm/sq. ft.
  • Backwash Bed Expansion: 35% of bed depth
  • Service flow rate: 3-6 gpm/sq. ft., but it may be further modified to adapt to local conditions

Filter Anthracite

Filter Anthracite

In comparison to more efficient solid loading, Filter Anthracite consistently improves the removal of turbidity. Further, as this is a low uniformity coefficient media, therefore, during the period of peak in-fluent turbidity, it generates smaller changes in effluent turbidity. Our experts ensure that it is made using the best available anthracite, procured from reliable vendors. We strive to keep up the utmost quality standards, and ensure that the physical characteristics of hardness, durable finish standards and reliable performance are adequately maintained.

Following are the technical specifications:

  • Product: Filter Anthracite
  • Grade: SAT-FA-002
  • Appearance: Black Granules
  • Carbon Content: 85-90 %
  • Specific Gravity: 1.65 gm/cc
  • Acid Water Solubility: 0.7 + 0.3
  • Caustic Solubility: <1%
  • Uniform Coefficient: 1.6
  • Ash Content: Less than 5 %
  • Size: 0.8 mm 1.6 mm
  • Hydrochloric Acid Solubility: < 2%
  • Hardness: 3.0 on MOH scale
  • Bulk Density: 920 Kg/M3

 

Conditions for Operation:

  • Bed depth: 24-36 in., 10-18 in multibed filters
  • Freeboard: 50% of bed depth (min.)
  • Service flow rate: 5 gpm/sq. ft. or higher depending upon local conditions
  • Backwash flow rate: 18-25 gpm/sq. ft.
  • Backwash bed expansion: 20-40% of bed depth

To, Varun Sehgal
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