Filter Media

Filter Media

Activated Carbon

Activated carbon, also called activated charcoal or simply "Activated coal" is known as a form of carbon that has been processed to make it extremely porous and thus to have a very significant surface area available for adsorption or chemical reactions .

The phrase activated in the name is sometimes replaced with active. Thanks to its substantial level of microporosity, just one gram of activated carbon carries a surface area in excess of 500 m2, as established commonly by nitrogen gas adsorption. Adequate activation for beneficial applications may occur solely from the high surface area, although further chemical treatment generally boosts the absorbing attributes of the material. Activated carbon is generally derived from charcoal.


Anthracite is really a hard, compact variety of mineral coal that has a substantial lustre. It has the greatest carbon count and features the fewest impurities of all coals, despite its reduced calorific content.

Anthracite is the most metamorphosed form of coal (but nevertheless represents low-grade metamorphism), wherein the actual carbon content material is somewhere between 92% and 98%.

The term is it is related to all those varieties of coal that do not effectively produce tarry or other hydrocarbon vapours when heated under their point of ignition. Anthracite lights with difficulty and burns having a short, blue, and smokeless flame.

Some other terms which relate to anthracite are black coal, hard coal and stone coal.


Birm is a efficient, cost effective media for the decrease of dissolved iron and manganese compounds from raw water supplies. Its usually used in either gravity fed or pressurised water treatment methods. Birm acts as a strong insoluble catalyst in order to enhance the response between dissolved oxygen and the iron compounds.

The actual physical features regarding Birm provide a superb filtration system media and that is easily washed through backwashing to remove the precipitant. Birm isn't absorbed within the iron removal procedure and therefore provides a significant economic advantage on many other iron removers.

Filtration Sand

IWE water filtration sand is composed of sub-angular, hard, long lasting, and dense grains of predominately siliceous substance. Removed from a clean glacial sand deposit, IWE Sand and Gravel ’s actual physical properties allow it to be among the best obtainable in the world intended for filtration functions. The water filtration sand is washed, kiln dried, and screened to meet up with Accurate requirements together with strict adherence to quality management.

We also specialise in custom grades of sand and gravel to satisfy our customers stringent requirements.

Sand is characterised by the diameter of the individual sand grains (eg .15-.35 mm) and the effective dimensions of the composite sand, the ES or d10. d10 is defined as the actual sieve size in mm that permits passing of 10% by weight of the sand. The uniformity coefficient (UC) of the sand is defined as d60/d10.


Garnet is a high hardness, high density granular filter . It can be used incredibly effectively for the lesser strata in a dual media filter bed.

Its large precise gravity as well as its chemical and abrasive resistance helps make almandite garnet ideal for filtration. A powerful multi-media filter system will probably utilize larger sized media on top in order to filter out the larger particulates and smaller sized media that will filter the smaller particulates. Garnet with its high density is heaver than almost every other filter media. Garnet’s higher density offers stability within your twin media bed allowing the filter sized garnet to filter down to 10 – 20 micron particulates.


A lot of borehole water or spring water supplies possess pH of less than Seven. If your water supply has a pH of less than Seven, it is considered to be acidic and must be dealt with. Acidic water can cause several problems, such as staining and corrosion. This water filtration media utilised in a pH neutralising filtration system is crushed and processed limestone, known as Magnadol. Magnadol can usually elevate a pH from 6 to Seven.

The Magnadol dissolves into water as it passes through a filter and also the natural alkalinity of the Magnadol (pH neutralising water filter media) raises the pH. Because of the calcium amount within the Magnadol, the particular hardness of the water is impacted. This hardness would be expected to increase to around 50ppm. Periodically, the pH neutralising filter will backwash, which alters any water circulate through the water filter. The water within the backwash cycle flows in from the inlet straight down the centre riser tube, up through the Magnadol bed and away from the control valve to drain. The next phase in a pH neutralising filter regeneration cycle is rinse. This water in a rinse cycle of the pH neutralising filtration system passes just as service, down through the composite pressure vessel and Magnadol filter media and up via the centre riser tube through the neutralising filter control valve and to drain. The pH neutralising filter then returns to its normal service position.

Manganese Dioxide

Manganese Dioxide is a natural Manganese ore that's chosen for its capability to attract chemical toxins, such as IRON and MANGANESE, as well as for the co-precipitation of Arsenic. The media will remove other impurities such as Hydrogen Sulfide. Manganese Dioxide doesn't affect alkalinity, or even the pH, of the filtered water, and also does not add any kind of extraneous species throughout treatment.

Sometimes known as pyrolucite, Manganese Dioxide can certainly operate at flux rates up to 15 gpm / ft. sq., depending on the raw water quality / contaminant levels. Contaminants within the raw water are first oxidized by using Chlorine and they are next adsorbed onto the filter media. Manganese Dioxide is a permanent media which is backwashed using filtered water, and does not involve chemical regeneration.