Study on the Control of Membrane Fouling by Pulse Function Feed and CFD Simulation Verification

被引：4

作者：

Li, Chen ^{[1
,2
]}

Zhang, Dashuai ^{[1
,2
]}

Liu, Jinrui ^{[1
,2
]}

Xiong, Hanyu ^{[1
,2
]}

Sun, Tianyi ^{[1
,2
]}

Wu, Xinghui ^{[3
]}

Shi, Zaifeng ^{[1
,2
]}

Lin, Qiang ^{[1
,2
]}

机构：

[1] Hainan Normal Univ, Key Lab Water Pollut Treatment & Resource Reuse H, Haikou 571158, Hainan, Peoples R China

[2] Hainan Normal Univ, Sch Chem & Chem Engn, Haikou 571158, Hainan, Peoples R China

[3] Hainan Normal Univ, Sch Comp Sci & Technol, Haikou 571158, Hainan, Peoples R China

来源：

MEMBRANES | 2022年 / 12卷 / 04期

关键词：

membrane fouling; function feeding; shear force; CFD simulation; HOLLOW-FIBER MEMBRANE; PERMEATE FLUX ENHANCEMENT; SHEAR-STRESS; ULTRAFILTRATION MEMBRANES; TURBULENT-FLOW; WATER; PERFORMANCE; FILTRATION; TIO2; VIBRATION;

D O I：

10.3390/membranes12040362

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A complex-function fluid controller placed in front of a membrane module was used to control the velocity change with feed fluid and reduce membrane fouling. Using humic acid as the simulated pollutant, the effects of the square wave function, sine function, reciprocal function, and power function feeding on the membrane flux were investigated. For sine function feeding, the membrane-specific flux was the largest and was maintained above 0.85 under the intermittent frequency of 9 s. Compared with the final membrane-specific flux with steady-flow feeding of 0.55, functional feeding could significantly reduce membrane fouling. SEM results showed that sine feeding led to slight contamination on the membrane surface. Furthermore, the Computational Fluid Dynamics (CFD) simulation results showed that the shear force of sine function feeding was about three times that of the steady flow (6 x 10(5) N). Compared with steady feeding, functional feeding could significantly improve the shear force on the membrane surface and reduce membrane fouling.

引用

页数：13