Fouling Mechanism Analysis on Micro-pore Filter Membrane based on the Solid Particle Size Distribution

doi:10.3901/JME.2018.20.145

Abstract

Abstract: The filter membrane blockage method can semi-quantitatively determine the particulate contamination level in the oil medium of a hydraulic system, and the study on the relationship between the solid particle size distribution and the fouling mechanism of the filter membrane is helpful to establish the quantitative detection method. Eight kinds of suspensions in different particle size distributions are prepared with AC fine test dust and coal dust. Two different sizes of micro-pore filter membranes with pore size of 10 μm and 15 μm are chosen. The experimental studies on the relationship between the filter blocking mechanism and the solid particle size distribution are carried out. Based on the membrane pore size, the solid particles in the suspension are divided into four kinds of particles, which are easy-to-pass particles, the sensitive particles, the bridging particles and the easy-to-block particles. Joining the flow attenuation curves caused by the tested suspensions flow through the gradually blocked filter membrane and the blocking index got by fitting the classical fouling model, the role of each kind particle taken in the membrane pore fouling and the possible membrane fouling mechanisms for suspensions in different particle size distribution are analyzed. Analysis results show that the filter blocking mechanism is corresponding to the rule of the size distribution and has nothing to do with the membrane pore size. The more quantities of the sensitive particles the suspension has, the more serious the initial blockage will be, and the easier for the membrane to form a cake. For the particle distribution rule which the hydraulic system always has like that the easy-to-block particles are in large quantity, the sensitive particles and the bridging particles are in a little amount and the easy-to-block particles are in less, the main fouling mechanism for the membrane is standard blocking-cake filtration. For the first time the blocking mechanisms of the micron filter membrane are analyzed from the view of the particle size distribution. The analysis results are helpful for establishing the relationship of the filter membrane flowrate and the solid particle size distribution and thereby improving the accuracy of oil contamination level detection.

Key words: blocking index, fouling mechanism, micro-pore filter membrane, solid particle size distribution

CLC Number:

TH39

LU Jixia, GUO Ruiyu, WANG Cheng, LU Wenhao, ZHAO Xiuqi, WANG Shan. Fouling Mechanism Analysis on Micro-pore Filter Membrane based on the Solid Particle Size Distribution[J]. Journal of Mechanical Engineering, 2018, 54(20): 145-151.

References

[1] 沈功田,刘渊. 大型机械系统的健康管理理论研究及应用设想[J]. 机械工程学报,2017,53(6):1-9. SHEN Gongtian,LIU Yuan. Research and application assumptions of health management theory of large mechanical system[J]. Journal of Mechanical Engineering,2017,53(6):1-9.
[2] 郭晶. DW1型油液污染度测试仪测试系统的研究与开发[D]. 北京:中国矿业大学,2005. GUO Jing. Study on the testing system of the DW-1 type instrument for measuring fluid contaminant levels[D]. Beijing:China University of Mining and Technology,2005.
[3] 史利娟. DW1油液污染度测试仪的研制[D]. 北京:中国矿业大学,2005. SHI Lijuan. Study on the instrument for monitoring the contaminant levels of fluids (DW1)[D]. Beijing:China University of Mining and Technology,2005.
[4] HERMANS P H,BREDEE H L. Principles of the mathematical treatment of constant pressure filtration[J]. J. Soc. Chem. Ind.,1936,55:1-4.
[5] HERMIA J. Constant pressure blocking filtration laws-application to power-law non-Newtonian fluids[J]. Trans. Inst. Chem.,1982,60:183-187.
[6] TRACEY E M,DAVIS R H. Protein fouling of track-etched polycarbonate microfiltration membranes[J]. Journal of Colloid and Interface Science,1994,167:104-116.
[7] BOWEN W R,CALVO J I,HERNÁNDEZ A. Steps of membrane blocking in flux decline during protein microfiltration[J]. Journal of Membrane Science,1995,101:153-165.
[8] IRITANI E,MUKAI Y,TANAKA Y,et al.Flux decline behavior in dead-end MF of protein solutions[J].Journal of Membrane Science,1995,103:181-191.
[9] HWANG K J,LIAO C Y,TUNG K L.Analysis of particle fouling during microfiltration by use of blocking models[J].Journal of Membrane Science,2007,287:287-293.
[10] HWANG K J,LIAO C Y. Effects of membrane morphology and operating conditions on microfiltration particle fouling[J]. Journal of the Taiwan Institute of Chemical Engineers,2012,43:46-52.
[11] WANG F,VOLODYMYR V T. Pore blocking mechanisms during early stages of membrane fouling by colloids[J]. Journal of Colloid and Interface Science,2008,328:464-469.
[12] 马敬环,项军,李娟. 陶瓷膜错流微滤海水的污染机理[J].膜科学与技术, 2010,30(3):87-92. MA Jinghuan,XIANG Jun,LI Juan. Fouling machanism of ceramic membranes in pretreating seawater by cross-f low microfiltration[J]. Membrane Science and Technology,2010,30(3):87-92.
[13] FERNÁNDEZ X R,ROSENTHAL I,NIRSCHL H. Experimental and analytical modeling of the filtration mechanisms of a paper stack candle filter[J]. Chemical Engineering Research and Design,2011,89:2776-2784.
[14] LEE S J,DILAVER M,KIM J H.Comparative analysis of fouling characteristics of ceramic and polymeric microfiltration membranes using filtration models[J].Journal of Membrane Science,2013,463(3):97-106.
[15] LIU Y W,LI X,YANG Y L,et al. Analysis of the major particle-size based foulants responsible for ultrafiltration membrane fouling in polluted raw water[J]. Desalination,2014,34:191-198
[16] EDUARDO R G,ADRIANO S,SIDARTA A L. Numerical modeling of straining:the role of particle and pore size distributions[J]. Transp. Porous Med.,2017,120:535-551.
[17] FANE A G. Ultrafiltration of suspension[J]. J. Membrane Sci.,1984,20:249-259.
[18] MEDONOGH R M,WELSEH K,FANE A G,et al. Flux and rejection in the ultrafiltration of colloids[J]. Desalination,1988,70:251-264.
[19] TARLETON E S,WAKEMAN R J. Understanding flux decline in crossflow microfiltration Part[J]. Trans. IChemE,Part A,1993,71:399-411.
[20] KAWAKATSU T,NAKAO S,KIMURA S. Effects of size and compressibility of suspended particles and surface pore size of membrane on flux in crossflow filtration[J]. J Membrane Sci.,1993,81:173-190.
[21] 钟璟,徐南平,时均. 颗粒粒径和膜孔径对陶瓷膜微滤微米级颗粒悬浮物的影响[J]. 高校化学工程学报,2000,14(3):230-234. ZHONG Jing,XU Nanping,SHI Jun. Effect of particle size and membrane pore size on crossflow microfiltration of micro-sized particle suspension using ceramic membranes[J]. Journal of Chemical Engineering of Chinese Universities,2000,14(3):230-234.
[22] LIU Y J,DARREN D S. Particles size-associated membrane fouling in microfiltration of denitrifying granules supernatant[J]. J. Membrane Sci.,2012,181-182:494-500.
[23] ANDO T,AKAMATSU K,NAKAO S I,et al. Simulation of fouling and backish dynamics in dead-end microfiltration:Effect of pore size[J]. Journal of Membrane Science,2012,392-393:48-57.
[24] WARKIANI M E,WICAKSANA F,FANE A G,et al. Investigation of membrane fouling at the microscale using isopore filters[J]. Microfluidics and Nanofluidics,2015,19(2):307-315.
[25] 卢继霞,丁慧,方亮,等. 化学镀镍方法制备金属微孔滤膜[J]. 机械工程学报,2014,50(12):171-176 LU Jixia,DING Hui,FANG Liang,et al. Method to make metal micro-pore filter membrane through electro-less nickel-plating[J]. Journal of Mechanical Engineering,2014,50(12):171-176.