Gulf Coast Refinery Case History

GULF COAST REFINERY - TURN-KEY REFINERY TREATMENT Case Study ??????????The refinery approached US Peroxide (USP) to engineer a H2O2 chemical dosing system sized to meet the plant’s D.O. demand. The system was requested to include integral secondary containment and had to meet Class 1, Division 2 electrical standards. The plant also expressed concerns about 35% H2O2 being a Class 2 Oxidizer. With consideration to the above engineering requirements and the urgency to respond with a treatment plan, USP developed a two-phase response. The first step was to address the immediate H2O2 treatment requirement and the second step was to implement a long-term solution. ???????????????? A Gulf Coast Refinery periodically used hydrogen peroxide (H2O2) at their WWTU Bio Unit. The H2O2 was used to supply supplemental dissolved oxygen (D.O.) to maintain a target D.O. level of 5 ppm in the aeration basins during high COD loading periods. Two parts of hydrogen peroxide will yield one part of dissolved oxygen: 2H2O2 ? O2 + 2H2O This reaction occurs rapidly in aeration basins, and thus provides an immediate source of D.O. for the biomass. Since H2O2 is a liquid, and infinitely soluble in water, the amount of D.O. provided to the aeration basin biomass is not limited by mass transfer of oxygen from air to liquid as is the case with mechanical aeration. A local distributor supplied 35% H2O2 to the refinery in 55-gallon drums. The drums were stored on wood pallets, which violated industry safety standards. The drums of 35% H2O2 also required handling (changing out the drums) which increased the risk of spills and exposure to operators. The Safety Department identified the violation and deemed the drums of 35% H2O2 as unsafe. They were subsequently removed from the plant. During a turnaround of an upstream unit, higher COD loading depleted the dissolved oxygen level in the WWTU Aeration Basins, resulting in ineffective treatment. Despite the use of additional mechanical aeration (diesel driven air compressors), sufficient wastewater D.O. levels were not being maintained. An alternative H2O2 supply approach had to be implemented right away. US Peroxide turn-key dosing system Program Benefits US Peroxide’s 27% H2O2 Treatment Program offered the refinery several benefits: ? It provided a simple and effective means to provide supplemental dissolved oxygen during periods of high BOD/COD loading to the WWTU Bio Unit. ? The use of a Class 1 Oxidizer (Refinery Grade 27% H2O2) and a turn-key storage & dosing system offered a safe solution during periodic increases in BOD/COD loading to the WWTU. ? The program has also enabled the plant to remove the diesel driven rental air compressors (additional cost and emissions issue). US Peroxide provides full-service 27% hydrogen peroxide treatment programs to treat refinery wastewater systems. (11/09) Refinery – Gulf Coast Refinery Case History - Page 2 DRINKING WATER TREATMENT ????????????????????????? Equipment USP-5000 system consisting of a 5,000-gallon, double-wall HDPE storage tank with 110% integral secondary containment and all required safety relief devices. A dual pump chemical dosing module sized to meet chemical dose requirements and designed to specific Class 1, Division 2 electrical requirements. All system components are pre-plumbed, pre-wired and passivated to ensure ease of installation and to maintain operational safety and product quality. Field Services USP field service installed, commissioned and maintained the entire system to ensure operational reliability. Chemical Inventory Management USP’s ChemWatchTM inventory management system provides remote monitoring capability and enables USP to respond quickly to sudden high usage requirements at the facility. U.S. Peroxide, LLC 500 Bishop St. NW, Suite C-3 Atlanta, GA 30318 www.h2o2.com ?Inquiries call 877-346-4262 or email: info@h2o2.com About US Peroxide US Peroxide is the leading supplier of hydrogen peroxide-based technologies and services for environmental applications. We have been serving the water, wastewater and remediation markets for over 15 years and have offices and field service locations throughout North America. Our consultative approach to problem solving includes application assessment, technology selection (which may include lab scale testing, if necessary) and development of a tailored treatment approach. Our full-service programs successfully integrate storage and dosing equipment systems, chemical supply, inventory and logistics management, and ongoing field and technical support. This approach provides cost-effective “hands-off” solutions to our customers. Getting Started We look forward to supporting your refinery treatment needs, whatever the scale of your requirements. To obtain a streamlined refinery treatment solution tailored to your specific project, just give us a call. GULF COAST REFINERY - TURN-KEY REFINERY TREATMENT ????????????????????????????????????????????USP responded to the refinery’s immediate need by quickly mobilizing a four-person Project Team that included a local account manager and experts in the areas of technical applications, equipment system design and equipment installation/maintenance. The full-service chemical management team installed a USP Rapid Response System consisting of a 5,000-gallon temporary storage trailer and a modular dosing control system. Additionally, with the plant’s desire to minimize risk exposure, USP provided a Refinery Grade Hydrogen Peroxide (27%), which is a Class 1 Oxidizer. Upon the addition of Refinery Grade 27% H2O2 to influent of the WWTU Bioreactor System, the mg/L D.O. target was maintained during the high COD loading period. ????????????????????????????????????????????????Once the temporary system was commissioned, the USP Project Team turned their attention to providing a permanent chemical storage and dosing system. USP worked with the plant’s engineers to determine the optimum dose point as well as the proper location for the chemical storage tank. The USP Project Team designed a program solution that included the following: The changeover occurred following the plant turnaround and was completed by the USP Field Services Team without incident and without disruption to the treatment program.