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The orthogonal experiments, which involves three factors： aeration intensity, suction time and suction suspended time, were designed to research membrane fouling of jet loop membrane bioreactor （JLMBR）. Experimental results indicate that increasing aeration intensity, reducing suction time and increasing suction suspended time all could mitigate membrane fouling effectively. However excessive aeration intensity, too short suction time and excessive suction suspended time were bad for bioreactor running. The optimal aeration intensity, suction time and suction suspended time were 0.75 1.00 m3/（m2.h）, 8 -10 min and 4 -5 min, respectively. The three factors all had effect on membrane pollution rate, while the suction time was the most important one and followed by aeration intensity and suction suspended time. It also indicates that, comparing with traditional submerged membrane bioreactors, JLMBR had lower membrane pollution rate. 相似文献
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强大的国防是军队现代化、正规化建设成就的反映,也是维护国家安全与统一、促进世界和平与发展的重要保障。大学参与国防科研是自身使命与国家需要相结合的必然趋势。文章分析了英国大学参与国防科研的概况,包括其开展形式、资金渠道及其产生的影响等方面的内容,以期获得可借鉴的经验。 相似文献
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一、电子档案管理工作中存在的问题
1、信息安全问题。档案信息在流动传播过程中,由于网络的不安全性及信息系统自身的漏洞,给黑客的人侵、病毒传染、信息的非法窃取等提供了可乘之机,使得网络档案信息安全极端脆弱, 相似文献
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本课程以培养学生会计综合职业能力为目标,建立以＂会计工作过程＂为主线,以＂实训项目＂为任务载体的＂项目化＂课程结构。分手工、电算化两个模块分别按＂期初建账、日常业务处理、期末业务处理、报表编报及归档＂4个循序渐进的环节,设计8个实训项目、22个实训任务,并设计＂过程＋结果＂的多元化评价方案。 相似文献
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