Method for removing oil and silicon from high-temperature thickened oil produced water

• Main Authors: LI HUIJUN, SUN SEN, HU YUANYUAN, QIU JIANGYUAN, CHEN BOLIANG, LI XUEJUN, LIU YONG, SHAN ZHAOHUI, MA DAWEN, FAN YUXIN
• Format: Patent
• Language: Chinese; English
• Published: 24.01.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for removing oil and silicon from high-temperature thickened oil produced water. According to the method, an electrochemical oil removal unit, an electrochemical silicon removal unit, a precipitation separation unit and a ceramic membrane filtration unit are sequentially adopted for treatment. According to the technical scheme, the method of combining electrochemical oil removal and silicon removal with ceramic membrane filtration is adopted, the problems that in the prior art, the oil removal and silicon removal process of the thickened oil produced water is long in route, high in operation cost and large in sludge amount can be solved, the sludge amount generated by the electrochemical silicon removal process is reduced by 50% compared with the sludge amount generated by a conventional chemical silicon removal process, and the production cost is reduced by 50%. The operation cost is reduced by more than 30%, and the oil content of sludge is less than 2%. 本发明公开了一种用于高温稠油采出水除油除