Treatment Of Wastewater VOC’s
Wastewater treatment plants is being mandated to remove low VOC’s that is contained within the treatment of water. Facilities introduce the VOC laden water vapor into a sump or knock-out tank to reduce the amount of liquid prior to sending the vapor to the regenerative thermal oxidizer. The forced air subjected to the regenerative thermal oxidizer system has very high humidity and lower VOC content which consequently reduces heat retention in the lower areas of the heat recovery bed. Higher humidity reduces the thermal efficiency of the overall system and will required more energy to sustain thermal operating temperature. An important factor to remember is that systems having high humidity will operate at higher internal and exhaust temperatures, design is a very important factor in the systems overall sucess. Below we have listed several other items to reduce operating costs and thermal effects within the regenerative thermal oxidizer system.
Structured ceramic media reduces clogging and downtime in Regenerative Thermal Oxidizers. Regenerative Thermal Oxidizers are increasingly used in wastewater facilities for volatile organic compound (VOC) abatement and odor control. Regenerative Thermal Oxidizers operate at their highest efficiency when equipped with high-quality structured ceramic media packing; the structured material within the Heat Recovery Chamber sustains the most favorable temperature for the oxidation process. Thermal energy used in the regenerative thermal oxidizer can be retained within the ceramic media, this may be as high as 90% depending on the application. Many older Regenerative Thermal Oxidizer systems were installed with saddles or random packing, these packing’s hold less thermal value while rapidly becoming clogged with salts and siloxane. These particulates can cause very costly shutdowns and quarterly cleanouts or washouts. We use ceramic structured packing engineered to resist particulates and plugging while increasing system uptime.
Ceramic structured media packing composed of larger openings which run vertically within in the Regenerative Thermal Oxidizer bed, eliminates any horizontal surfaces which may create resistance to vapor flow. This vertically structured construction radically reduces the channeling of vapor and provides for more efficient contact with the ceramic media surface increasing the thermal value within the heat recovery bed. This greatly increased effectiveness offers reductions in fuel useage with the prospect to increase flow through the Regenerative Thermal Oxidizer Heat Recovery Chamber over existing random ceramic saddle packing’s. The lack of horizontal surfaces also reduces the packing’s ability to entrap particulates such as silica powder from the incoming process air, while reducing the pressure drop across the Heat Recovery Chamber.
After replacing existing ceramic random packed Regenerative Thermal Oxidizer heat recovery beds with vertical structured ceramic structured media, Regenerative thermal oxidizer users in wastewater treatment applications will observe a decrease in pressure drop around 22 percent or more while noticing improved efficiency, resulting in significantly lower electrical and fuel costs in Regenerative Thermal Oxidizer operation. American Environmental Fabriction and Supply engineers and installs ceramic packing and retrofits ceramic beds.
About American Environmental Fabrication & Supply LLC
Is a leading provider in environmental thermal heat transfer equipment. An OEM manufacturer and installer of air pollution control equipment and environmental media worldwide, We are ready for the most demanding thermal applications to include, mass heat transfer.a leader in air pollution control, installation and engineeering services.
Located in Hulbert, Oklahoma. For more ceramic media information, visit www.american-environmental.us call 1-918-708-1253 Ext. 4001
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