CAJ | 학술논문

对炼油厂净化水回用过程结垢原因进行分析,针对结垢成因采用陶瓷膜对净化水做深度处理,而经膜处理后净化水pH在6.9左右,净化水呈中性,试图使得炼油净化水达到工艺水回用目的.着重考察了膜孔径、操作压差、膜面流速、料液温度等对膜通量的影响.结果表明,孔径为50nm的氧化锆陶瓷膜处理炼油净化水其渗透通量高达800L·m~2·h~(-1),渗透液中COD小于200mg·L~(-1);体系的操作压差可控制在0.25MPa,较大的膜面流速大和料液温度有利于渗透通量的提高;膜污染的清洗采用在线反冲和离线化学清洗的方法,料液渗透通量可恢复到新膜的95%.
대련유엄정화수회용과정결구원인진행분석,침대결구성인채용도자막대정화수주심도처리,이경막처리후정화수pH재6.9좌우,정화수정중성,시도사득련유정화수체도공예수회용목적.착중고찰료막공경、조작압차、막면류속、료액온도등대막통량적영향.결과표명,공경위50nm적양화고도자막처리련유정화수기삼투통량고체800L·m~2·h~(-1),삼투액중COD소우200mg·L~(-1);체계적조작압차가공제재0.25MPa,교대적막면류속대화료액온도유리우삼투통량적제고;막오염적청세채용재선반충화리선화학청세적방법,료액삼투통량가회복도신막적95%.
A detailed analysis of the water and scale was carried out to educed mechanism and effective means. In the experiment part about ceramic membrane treat refinery purified water, the pH value of treated purified water was 6.9. The results showed that ceramic membrane with pore size around 50 nm not only meet the water requirement, but also owed high permeation flux (800 L·m~(-2)·h~(-1)), the COD content is less than 200 mg·L~(-1) in the permeated side. Operation pressure should be controlled in 0.25 MPa. Higher temperature is better to increases of flux. The gas-liquid back-flush technology can keep high permeate flux, refinery purified water permeate flux could return to 95% of the originality.