AJM design and fabricate a range of pressure or gravity granular activated carbon filters to suit a variety of applications. GAC filters are commonly used to remove dissolved organic compounds from wastewater or algal toxins, taste and odour compounds from potable water. In wastewater applications GAC filters are normally installed downstream of media filters and primary physical chemical treatment process such as EnviroDAF.
 

Granular activated carbon (GAC) is manufactured from carbon, typically coal, heated in the presence of steam at very high heat. This process causes the carbon to develop large numbers of tiny pores, which trap nonpolar wastes at the molecular levels by means of adsorption.

A wide variety of activated carbon products are available exhibiting markedly different characteristics depending upon the raw material and activation technique used in their production. In selecting an activated carbon, it is important to have a clear understanding of both the adsorptive and physical characteristics of the material in order to optimise the performance capabilities.
 

The GAC products available by AJM have been scientifically trialled and proven to provide the best adsorption capabilities. The origin of the activated carbon can be coal, coconut or wood. The particular grade and retention time of the filter is selected for each application to maximise efficiency and meet the specific performance targets. All AJM equipment is guaranteed.

GAC filters are available in a range of sizes to suit flows up to 500KL/hr and can be fabricated in mild steel, grades of stainless steel, fibreglass or plastic materials to ensure enhanced corrosion resistance in all cases. The filter vessels can be designed to suit pressures up to 1000KPa whilst allowing easy removal and replacement of the media.

The underdrain system is a simple yet highly effective arrangement of nozzles that ensures distribution of fluid through the entire bed to ensure an even adsorption of media.
 

Some Typical applications: