TY - JOUR
T1 - Micro-bubbles enhanced breakage warning for hollow fiber membrane integrity with a low-cost real-time monitoring device
AU - Wang, Jie
AU - Xin, Changchun
AU - Li, Jinzhao
AU - Song, Lianfa
AU - Jia, Hui
N1 - Funding Information:
Funding information This study is financially supported by the National Natural Science Foundation of China (No. 51578375, No. 51638011, No. 51378349), Program for Changjiang Scholars and Innovative Research Team in the University of Ministry of Education of China (Grant No. IRT13084), and Science and Technology Planning Project of Tianjin, China (15PTSYJC00230, 14ZCDGSF00128). We also thank for the support of China Scholarship Council (No. 201609345007, No. 201709345009).
Publisher Copyright:
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - A low-cost device was developed to monitor the integrity of hollow fiber membrane by real-time online detecting and measuring air bubbles in the permeate flow. When a breakage occurs in the fiber membrane system, air bubbles will find their ways to enter the permeate flow. The monitoring device consists of two pairs of platinum probes attached to a pipe, along which the permeate flows. Membrane’s breakage was identified by the voltage changes between the two pairs of probes when air bubbles in the permeate touch them. There was no addition of any other chemicals or materials into the system that would jeopardize final products of the membrane process. Experimental results showed that the voltage signal changes before and after a breach of membrane were obvious in the normal operation conditions. The smallest diameter of the bubbles that can be detected by the monitoring device was 50 μm, which was captured and identified with a high-speed camera. Furthermore, the sensitivity of device with two pairs of probes improved by 5~9% over that with one pair of probes. Finally, cost of the proposed device was roughly estimated only about 70 US dollars and the detection result was highly consistent with that obtained with the prevailing particle counters of several thousand US dollars.
AB - A low-cost device was developed to monitor the integrity of hollow fiber membrane by real-time online detecting and measuring air bubbles in the permeate flow. When a breakage occurs in the fiber membrane system, air bubbles will find their ways to enter the permeate flow. The monitoring device consists of two pairs of platinum probes attached to a pipe, along which the permeate flows. Membrane’s breakage was identified by the voltage changes between the two pairs of probes when air bubbles in the permeate touch them. There was no addition of any other chemicals or materials into the system that would jeopardize final products of the membrane process. Experimental results showed that the voltage signal changes before and after a breach of membrane were obvious in the normal operation conditions. The smallest diameter of the bubbles that can be detected by the monitoring device was 50 μm, which was captured and identified with a high-speed camera. Furthermore, the sensitivity of device with two pairs of probes improved by 5~9% over that with one pair of probes. Finally, cost of the proposed device was roughly estimated only about 70 US dollars and the detection result was highly consistent with that obtained with the prevailing particle counters of several thousand US dollars.
KW - Air bubble detecting
KW - Hollow fibers
KW - Low-cost device
KW - Membrane integrity
KW - Real-time monitoring
UR - http://www.scopus.com/inward/record.url?scp=85048686446&partnerID=8YFLogxK
U2 - 10.1007/s11356-018-2415-2
DO - 10.1007/s11356-018-2415-2
M3 - Article
C2 - 29916146
AN - SCOPUS:85048686446
VL - 25
SP - 24639
EP - 24652
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
SN - 0944-1344
IS - 25
ER -