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(process-worldwide) -- Siemens Industry Automation
Division is providing Takreer (Abu Dhabi Oil Refining) with a Zimpro wet air
oxidation (WAO) system to treat refinery spent caustic as part of the company’s
expansion of its refinery in Ruwais, Abu Dhabi, UAE. The expansion project is
scheduled to be complete by late 2013.
The refinery expansion project will increase crude oil refining capacity by
417,000 barrels per day using the latest advanced technology for downstream
processing units to produce higher quality products and to comply with UAE and
international environmental standards.
One of the advanced technologies that will help Takreer meet environmental
regulations, the WAO system will treat odorous sulfides and produce
biodegradable effluent for discharge to the facility’s effluent treatment
plant.
Wet oxidation is the oxidation of soluble or suspended components in an
aqueous environment, using oxygen as the oxidizing agent. When air is used as
the source of oxygen, the process is referred to as wet air oxidation (WAO). The
process will oxidize odorous reduced sulfur species such as sulfides and
mercaptides. WAO can pretreat difficult wastewater streams like refinery spent
caustic, making them amenable for discharge to a conventional biological
treatment plant for polishing.
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