Calgon Carbon Rayox - Model 30 - Modular Treatment System
The RAYOX advanced oxidation system supplied by Calgon Carbon Corporation destroys dissolved organic contaminants in water. In this system, a proprietary high-powered, medium pressure lamp emits high energy UV radiation through a quartz sleeve into the contaminated water.
An oxidizing agent, typically hydrogen peroxide, is added to the contaminated water and is activated by the UV light to form oxidizing species called hydroxyl radicals, via:
H202 + UV > 2(«0H)
The hydroxy! radical then reacts with the dissolved contaminants, initiating a rapid cascade of oxidation reactions that ultimately fully oxidizes (mineralizes) the contaminants. The success of the system is based on the fact that the rate constants for the reaction of •OH radicals with most organic pollutants are very high. The hydroxyl radical typically reacts a million to a billion times faster than chemical oxidants such as ozone and hydrogen peroxide. In addition, many organic contaminants are split into smaller components by the direct absorption of UV light in the UV-C spectral range emitted by proprietary medium-pressure UV lamps. The RAYOX system and its components are covered by numerous patents.
- Configuration : 1 x 30 kW Reactor
- Power Supply : 480 VAC, 3ph, 60 Hz (alternate power supplies available)
- Control System : PLC AB Micrologix
- Shipping Weight : 2,500 lbs/1,150 kg
- Materials : Wetted Parts- 316SS, Quartz, Fluoropolymers
- External Parts : Epoxy Coated Steel, 316SS
- Size : 48L x 49W x 88H
- Skid-Mounted Module
- Proven, Fully Automated PLC System Control
- Patented, Field Proven Lamp Cleaning Devise
- OSHA Approved
- NEC Compliant •CSA Approved
- 3,000 Hour Lamp Warranty
- State-of-the-Art Lamp Power Supply
- Safety Interlock Switches
- Easy Installation
- Upgrade for outdoor installation available
The Customer's Problem
The Kelly Air Force base in San Antonio .Texas, needed to remediate multiple groundwater contaminants including DCA, DCEJCE, and vinyl Chloride. The United States Air Force contracted with a major engineering company to assess various technologies, including air stripping, activated carbon and UV Oxidation. Due to the presence of vinyl chloride, air stripping was ruled out because of stringent air regulations.
Calgon Carbon's Solution
UV Oxidation was selected as the technology to be used for the groundwater remediation. Calgon Carbon Corporation was awarded a contract to lease a 30kW trailer-mounted RAYOX unit to demonstrate UV Oxidation technology at several well sites on the base.The results formed the basis of the full scale design. The Air Force proceeded with groundwater remediation at two well sites on the base, Zone 1 and Zone 2. Calgon Carbon Corporation was awarded the contract for both treatment systems on the basis of cost and technical merit. The destruction of DCE controlled the design of Zone 1, while the destruction of 1,1-DCA controlled the design of Zone 2.The systems were delivered in the summer of 1993.