Shivas has the right the mix of experience and expertise in providing full-service custom-designed abatement solution for odour control. We provide complete solutions right from initial design, needs analysis and planning through installation, training and operations. The integrated process and innovative engineering concepts minimizes the operating costs, enhances the efficiency and most importantly, solves your specific problem. Different technologies can be used in order to develop an effective odour control system. We utilize the proven method based on adsorption/chemisorption on granular or pelletised activated carbon for odour control. The high activity non-impregnated carbon is designed specifically for improved properties in odour removal from sewage treatment applications. Pretreatment allows the activated carbon to work under optimal conditions. Mechanical filters or FRP ducts are installed to trap the smaller particles. If free water droplets are expected a demister will be integrated in the system.Activated Carbon:
Forms of Activated Carbon:
- Activated carbon is a form of carbon that has been processed to make it extremely porous and thus to have a very large surface area available for adsorption or chemical reactions. A variety activated carbon products is available exhibiting different characteristics depending upon the raw material and activation technique used in their production.
- Activation refers to the increasing the adsorption properties of carbon. Raw materials such as coal and charcoal do have some adsorption capacity, but this is greatly enhanced by the activation process.
- Activated carbon can be produced from carbonaceous source materials like nutshells, wood and coal. The raw material has a very large influence on the characteristics and performance activated carbon.
- In selecting an activated carbon, it is important to develop a clear understanding of both the adsorptive and physical characteristics of the material in order to optimize the performance capabilities.
- Granular Activated Carbon: The irregular shaped particle has a relatively larger particle size ranging from 0.2 to 5 mm. These carbons are preferred for both liquid and gas phase applications.
- Pelleted Activated Carbon: These are extruded and cylindrical shaped activated carbon with diameters from 0.8 to 45 mm. They are mainly used for gas phase applications because of their low pressure drop, high mechanical strength and low dust content.
Using Activated Carbon:
- A high performance impregnated activated carbon pellet are used for the removal and containment of hydrogen sulphide, organic mercaptans (thiols) and certain organic sulphides from air. The granular carbon is installed in the fixed bed allowing the liquid to pass through the bed. Compounds required to be removed are retained on the activated carbon.
- The activated carbon can be used till its exhaustion. It can be normally reactivated or replaced with the new carbon.
- Design Information : The main factors in the design of an adsorption system are the carbon consumption (amount of carbon required to treat the liquid or gas) and the contact time (for a fixed flow rate, the contact time is directly proportional to the volume of carbon).
- Adsorbers: Most adsorbers are pressure vessels constructed in carbon steel, stainless steel or plastic. Large systems for drinking water are often constructed in concrete. In some cases, a moving or pulsed bed adsorber is employed to optimize the use of the granular activated carbon.