WHOLE HOUSE IRON, SEDIMENT, CHLORINE AND TANNIN FILTERS

CARBON FILTERING

is a method of filtering that uses a bed of activated carbon to remove contaminants and impurities, using chemical adsorption.

Each particle/granule of carbon provides a large surface area/pore structure, allowing contaminants the maximum possible exposure to the active sites within the filter media. One pound (454 g) of activated carbon contains a surface area of approximately 100 acres (~40 Hectares).

Activated carbon works via a process called adsorption, whereby pollutant molecules in the fluid to be treated are trapped inside the pore structure of the carbon substrate. Carbon filtering is commonly used for water purification and in air purifiers. 

Active charcoal carbon filters are most effective at removing chlorine, sediment, volatile organic compounds (VOCs), taste and odour from water.

Typical particle sizes that can be removed by carbon filters range from 0.5 to 50 micrometres.

SEDIMENT, TURBIDITY BACKWASH FILTER

next Sand offers a single bed media made from high purity Clinoptilolite, which delivers superior performance over conventional filter sands or multimedia, and at a lower cost.

The material is mined in the Western USA and then highly processed and graded; the resulting product is hard and stable with a high surface area and microporous character in addition to surface micro-crystals making it an ideal filter media. 

next Sand has high filtration performance at <5 microns compared to 12 to 15 micron for multi media. It also has a higher flow capacity, typically three to four times that of multimedia. This higher flow rate means a greater performance can be achieved from existing vessels when upgraded with next Sand, or for new applications, smaller filter vessels would be required to achieve the same results.

Filtration through the entire media bed depth provides more than twice the capacity of multimedia filtration. It has a higher dirt holding capacity so requires less frequent backwashing, leading to reduced downtime. Lighter weight and lower volume requirement mean lower capital and shipping costs than multimedia and the product also lasts longer. The media isn’t consumed in the filtration process; a simple periodic backwash will keep the media clean and operating efficiently for five years or more.

IRON BACKWASH FILTERS

• KATALOX-Lite filter media

What is Katalox Light®?

KATALOX LIGHT ® is a new brand of revolutionary advanced filtration media completely developed in Germany. It‘s composition simply makes it outstanding against the contemporary filter media available in water treatment industries, like sand, BIRM, Greensand Plus, Manganese Greensand etc. KATALOX LIGHT ® is manufactured in Germany. KATALOX LIGHT ® is engineered with unique MnO2 coating technique on ZEOSORB®, providing it lightweight, higher filtration surface, more service life and more reliable performance (filtration down to 3 µm) than any other existing granular filter media. KATALOX LIGHT ® is being used in numerous system for residential, commercial, industrial and municipal applications worldwide, for High-level filtration, colour and odour removal, Iron, Manganese, Hydrogen sulphide removal, efficient reduction of Arsenic, Zinc, Copper, Lead, Radium, Uranium and other radionuclides and heavy metals. KATALOX LIGHT ® is Certified to NSF/ANSI-61 standard for drinking water applications and has met the ANSI/NSF 372 Lead-free compliance.

•  BIRM filter media

Birm® is an efficient and economical media for the reduction of dissolved iron and manganese compounds from raw water supplies. It may be used in either gravity fed or pressurized water treatment systems.

Birm acts as an insoluble catalyst to enhance the reaction between dissolved oxygen (D.O.) and the iron compounds. In groundwaters, the dissolved iron is usually in the ferrous bicarbonate state due to the excess of free carbon dioxide and is not filterable. Birm, acting as a catalyst between the oxygen and the soluble iron compounds, enhances the oxidation reaction of Fe++ to Fe+++ and produces ferric hydroxide which precipitates and may be easily filtered.

The physical characteristics of Birm provide an excellent filter media which is easily cleaned by backwashing to remove the precipitant. Birm is not consumed in the iron removal operation and therefore offers a tremendous economic advantage over many other iron removal methods. Other advantages of Birm include; long material life with relatively low attrition loss, a wide temperature performance range and extremely high removal efficiency.

Negligible labour costs are involved because Birm does not require chemicals for regeneration, only periodic backwashing is required. When using Birm for iron removal, it is necessary that the water: contain no oil or hydrogen sulphide, organic matter not to exceed 4-5 ppm, the D.O. content equal at least 15% of the iron content with a pH of 6.8 or more. If the influent water has a pH of less than 6.8, neutralizing additives such as Clack Corosex®, Calcite or soda ash may be used prior to the Birm filter to raise the pH. A water having a low D.O. level may be pretreated by aeration.