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Sinopec orders advanced water treatment system for Yangzi complex

03.16.2012  | 

Siemens Industry Automation Division is providing another Zimpro wet air oxidation (WAO) system to treat wastewater at Sinopec Yangzi Petrochemical Co., Ltd.'s facility, near the Yangzi River in Jiangsu Province, People's Republic of China.

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Siemens Industry Automation Division is providing another Zimpro wet air oxidation (WAO) system to treat wastewater at Sinopec Yangzi Petrochemical Co., Ltd.'s facility, near the Yangzi River in Jiangsu Province, People's Republic of China. The most recent of seven Zimpro WAO systems installed at Sinopec facilities will be used to treat sulfidic spent caustic wastewater streams.

The Yangzi system will treat approximately 4 m3/hr (17.6 gpm) of wastewater. The system is anticipated to be operational by the end of 2012.

The WAO process will oxidize odorous reduced sulfur species such as sulfides and mercaptides. The system will also break down complex organic contaminants, such as phenols, to either carbon dioxide and water, or biodegradable organics. It will generate a biodegradable effluent that can be discharged to conventional biological wastewater treatment

The Yangzi facility includes both a refinery and a petrochemical plant where fuels and ethylene are produced. This Sinopec project marks the ninth Zimpro WAO system installed by Siemens Water Technologies in China for spent caustic treatment.

Sinopec Yangzi Petrochemical Co. Ltd. is a wholly-owned subsidiary under China Petroleum & Chemical Corp.



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