Activated Carbon System
What is Activated Carbon?
Activated carbon is a porous material that removes organic compounds from liquids and gases by a process known as “adsorption.” In adsorption, organic molecules contained in a liquid or gas are attracted and bound to the surface of the pores of the activated carbon as the liquid or gas is passed through.
During adsorption, liquids or gases pass through a bed or layer of highly porous material called the adsorbent. The compound or compounds to be removed, termed the adsorbate(s), diffuse to the surface of the adsorbent and are retained because of weak attractive forces. Adsorption occurs on the internal surfaces of the materials.
The primary raw material used in the production of our activated carbons is bituminous coal that is crushed, sized and processed in low temperature bakers followed by high-temperature furnaces. This heating process is known as activation, and develops the pore structure of the carbon. Through adjustments in the activation process, pores of the required size for a particular purification application are developed.
Activated carbon is widely used for odour control / removal at a number of stages in municipal sewage treatment. Odours can develop at a number of points in municipal waste water treatment plants where sewage is agitated or where sludge accumulates. This includes pumping stations, head works, trickling filters, digesters and at sludge handling and storage areas.
The activated carbon used is determined in relation to the nature of the odorous compound present and can be supplied in the form of either standard untreated grades, catalytically enhanced materials or chemically impregnated types for enhanced loading capacity and removal efficiency.
Skid-mounted activated carbon odor control systems are available to treat low volumes of odorous air. The carbon media is loaded prior to shipment, and the carbon vessel and fan are factory installed on a steel skid.
Typically, it includes, a control panel which is built to your or local specifications and mounted on the skid. A fan is mounted at the inlet, with air flow vertically upwards through the media bed. A damper is provided to regulate airflow through the vessel and isolate the system during media replacement.