| RESEARCH ON FILTRATION AND PURIFICATION TECHNOLOGY HYDRAULIC OIL BY MEMBRANE |
| Authors： YIN Yan-mei1，2，Wu Xiu-li3， KE Yong-wen1，DAI Hai-ping2，*，WANG Jie |
| Units： 1．Tianjin Xinqiyuan Environmental Materials Co. LTD，Tianjin 300382，China；2．Shandong kings will Hairun Special Separation Equipment Co. Ltd. Weifang 26100，China；3．Tianjin Beautiful Day Environment Technology Co. LTD，Tianjin 300382，China；.4．School of Environmental Science and Engineering， Tiangong University，Tianjin 300387，China；5．Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology，Tiangong University，Tianjin 300387，China |
| KeyWords： Super-oleophilic and hydrophobic hollow fiber membrane；The hydraulic oil；pollution；Membrane filtration |
| ClassificationCode：TQ028.8 |
| year,volume(issue):pagination： 2021,41(5):139-145 |
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Abstract： |
| The existing hydraulic oil pollution control technology has low filtration accuracy and large production of hazardous waste, so it is urgent to use energy-saving and environmental protection purification technology. Hydraulic oil was purified by superhydrophilic and hydrophobic hollow fiber membrane. The changes of physicochemical properties, pollution degree and additive content of hydraulic oil before and after filtration were studied. The flux attenuation of the membrane and the stable operation process of the membrane system were also investigated. The results show that the physical and chemical properties of hydraulic oil, such as viscosity, viscosity index and additive content are basically unchanged before and after membrane filtration. Membrane filtration can remove nearly 100% of the clearance particles and oil sludge, and 39.1% of the moisture. According to the requirements of 46# anti-wear hydraulic oil in the national standard 《GB1118.1-2011 hydraulic oil》, the filter fluid can continue to be used under the same application conditions. In a single operating cycle, the membrane flux decreases from the initial 3.7L/m2*h to about 2L/m2*h, and both gas backwash and oil backwash can be restored to the initial membrane flux. The membrane system can run stably by adopting the process of oil-gas-backwashing, oil-gas-backwashing, oil-production-oil backwashing. It is higher feasible to use superhydrophilic and hydrophobic hollow fiber membrane in hydraulic oil pollution control. |
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AuthorIntro： |
| 尹延梅（1987—）女，山东日照，硕士，工程师，主要研究方向膜技术在水处理及油品资源化应用。Email:sdyym@163.com |
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