Optimization of Technologic Parameters and Analysis of Membrane Resistance of Sequencing Dynamic Membrane Bioreactor 序批式动态膜生物反应器工艺参数优化
The determination of material structure, performance parameters and membrane resistance, membrane diffusion coefficient of the F4112 ion exchange membrane were introduced. 介绍了F4112离子交换膜的材料结构、性能参数及膜电阻、膜中扩散系数的测定方法。
Effects of zinc on membrane potential ( MP) and membrane resistance ( MR) of algae cell 锌污染对藻细胞膜电位和膜电阻的影响
The hollow fiber membrane is pretreated to improve the hydrophilic performance and reduce the membrane resistance. 通过对中空纤维微滤膜进行预处理,提高了膜的亲水性,降低了膜的固有阻力。
At the same time, PAC addition helped to slow the reduction of membrane flux. It reduce the total membrane resistance of MBR from 2.47 × 1012m-1 to 1.92 × 1012m-1, and accordingly relieve the membrane fouling effectively. 同时,投加PAC有效延缓了MBR膜通量的衰减,使总的膜阻力由2.47×1012m-1下降至1.92×1012m-1,有效减轻了膜污染。
The results indicate that the change of membrane resistance is not active when the shear velocity amounts to a certain degree, and membrane resistance will increase quickly with the increasing of pressure. 结果表明,剪切速度达到一定值时膜阻力变化不明显,而随着压力提高膜阻力迅速提高。
The changes of membrane irritability and membrane resistance were related to the inhibition and activation of potassium channel. 生物膜应激性及膜电阻的变化与钾通道的活动状态有密切关系。
Factors affecting membrane resistance of ion-selective microelectrodes 影响离子选择性微电极膜电阻的因素
In the meiobar range, membrane resistance was the dominant role, independent of operating terms. 研究结果表明,在低压区,膜本身阻力占主导地位,它与操作条件无关;
Study on membrane fouling mechanisms and measuring of membrane resistance 膜堵塞机理研究与膜阻力测定
Meanwhile, we also carry out experiments on the relevant contributions of membrane resistance during ultrafiltration, and draw the conclusion that MWCO ( molecular weight cutoff) and the membrane materials play important roles in affecting the contributions of membrane resistance. 同时论文还进行了超滤过程中膜相对阻力分布的试验,得出截留分子量和膜材料是影响膜阻力分布的重要因素。
The anti-corrosive performance of coated metal was tested using step current method and electric coupling current method, suggesting that membrane resistance and electric coupling current present as the parameters of the corrosion resistance of coated metal. 本文用阶跃电流法、电偶电流法测试涂膜金属的耐蚀性能,提出用膜电阻和电偶电流作为表征涂膜金属的耐蚀性的参数。结合交流阻抗测量、极化曲线等方法,验证其可靠性。
After comparing every mass transfer resistance during membrane extraction process, it is obtained that using hydrophobic membrane module in this system can effectively decrease the membrane resistance and enforce mass transfer. 比较和分析膜萃取过程中各部分传质阻力,可以看出,对于该体系选取疏水膜器,可以有效地减小膜阻,强化传质。
Study on the Membrane Resistance in Extracting Soybean Oligosacchrides by Microporous Hollow Fiber 中空纤维膜提取大豆低聚糖膜污染的研究
Study of the Influence on Ozone Oxidation on Molecular Distribution of Secondary Effluent and Membrane Resistance 臭氧氧化对城市二级出水分子量分布及膜阻力构成的影响研究
Increasing the back flush frequency reduces the irreversible membrane resistance increment, slows down the flux decline and improves the velocity of net water production greatly. 增加在线反冲洗频度降低了不可逆膜阻增量,有效提高了净产水速率。
The Influence of Membrane Resistance on the Electrochemical Behavior of Gold Electrode Modified by Self-assembled Monolayer 膜电阻对自组装膜修饰电极电化学行为的影响
This paper focuses on modeling membrane resistance of the PEMFC for control design. 该文针对控制的需要,集中研究质子交换膜燃料电池膜阻抗部分的模型。
The experimental results showed that the different conditions of pretreatment and ultrafiltration would have caused differences of the membrane resistance. 试验结果表明:预处理及超滤条件不同,其过滤阻力构成也不同。
Water loss and coincident increase in membrane resistance to proton conduction are significant barriers to high performance operation of traditional proton-exchange membrane fuel cells at elevated temperatures where the relative humidity may be reduced. 传统的质子交换膜燃料电池在高温下工作时,质子膜会因温度升高而发生脱水和膜/SiO2复合膜电阻升高的现象,这对提高燃料电池的工作性能是一个致命的阻碍。
The reason of CN-CA 、 PVDF membrane fouling is investigated by membrane resistance determination in membrane bio-reactor, it is found that membrane fouling mainly result from concentration polarization and gelatin layer. 通过膜生物反应器中膜阻力的测定,分析混合纤维素膜和聚偏氟乙烯膜污染形成的原因,得出膜污染主要是由于浓差极化及凝胶层形成的;
The resistance caused by suspended solids of the mixed liquor occupied 70% of total membrane resistance, that by colloidal substance occupied 22% and that by soluble substance occupied fraction 8%. 结果表明,污泥混合液悬浮固体形成阻力占膜总阻力的70%,胶体物质形成阻力占22%,溶解性物质形成阻力占8%。
The analysis of membrane resistance distribution shows that resistance arising from cake formation is 73% of total resistance, resistance due to pore blocking is 24%, and clean membrane resistance is only 3%. 同时,对运行后的膜阻力分布进行分析,表明泥饼阻力和孔道吸附堵塞阻力是膜污染的主要组成部分,分别占到总阻力的73%和24%,而膜本身阻力仅占3%。
A new 2D two-phase flow model was developed to study the two-phase mass transport in PEM fuel cells ant its effects on membrane resistance and cathode performance. 建立了一个新的二维、两相流模型来研究质子交换膜(PEM)燃料电池中的两相传质及其对质子膜阻抗和阴极性能的影响。
The hollow fiber UF membranes were used to bean curd the distribution of the membrane resistance in the ultrafiltration process of bean curd wastewater. 采用中空纤维聚砜超滤膜,对处理豆腐废水过程中膜阻力的分布进行了研究。
Membrane resistance mainly in the adsorption resistance, up to 49.3%, the membrane pore blocking and gel resistance played a minor role, accounting for 29.8% of the resistance. 膜阻力主要集中在吸附阻力,最高可达49.3%,膜堵孔和凝胶阻力起了次要的作用,占总阻力的29.8%。
Finally membrane resistance and capacitance all will go to a fixed value. 最终膜电阻和膜电容均趋向一个定值。
It had been found that the membrane resistance and cake layer is composite to the most of the membrane filtration resistance. The experiments showed that after the effective coagulation pretreatment compared to other resistance membrane resistance become the main factor. 发现膜自身阻力和复合滤饼层阻力是对膜过滤影响最大的两种阻力,实验表明在有效的混凝预处理后,相比于其他阻力膜自身阻力是影响膜过滤的最主要因素。
The structure of the fouling layer on the membrane surface in the integrated process is relative loose and rough, which is benefit for the decreasing of membrane resistance. 光催化&膜组合工艺的膜表面污染层结构比较疏松,具有较高的粗糙度,有利于降低膜阻力。