Application of fluorescent particles as a tracer to detect the membrane surface damage in a pilot scale membrane bioreactor

Title & Authors
Application of fluorescent particles as a tracer to detect the membrane surface damage in a pilot scale membrane bioreactor
Kim, Choah; Kim, Hee Jun; Cho, Jinwoo;

Abstract
In this study, a fluorescent silica nano particle is used as the surrogate for challenging test of membrane surface integrity. The particles are functionalized by a fluorescent dying agent so that as an ultraviolet light is imposed a bright fluorescent image from the particles can be taken. If a membrane surface is damaged and has a compromised part larger than the size of surrogate the fluorescent particles would pass through and contained in the permeate. An operator can directly notice whether the membrane surface is damaged or not by detecting a fluorescent image taken from the permeate. Additionally, the size of compromised part is estimated through analysing the fluorescent image in which we surmise the mass of particles included in the permeate by calculating an average RGB value of the image. The pilot scale experiments showed that this method could be applied successfully to determine if a membrane surface had a damaged parts regardless of the test condition. In the testing on the actual damaged area of $\small{4.712mm^2}$, the lowest error of estimating the damaged area was -1.32% with the surrogate concentration of 80 mg/L, flux of $\small{40L/m^2/hr}$ for 25 minutes of detection. A further study is still going on to increase the lowest detection limit and thus decrease the error of estimation.
Keywords
Estimation error;fluorescent silica nanaoparticle;membrane damage;pilot scale membrane integrity test;tracer;
Language
Korean
Cited by
References
1.
Sutherland. K. (2010) The rise of membrane bioreactors, Filtration & Separation, 47(5), 14

2.
Ministry of Environment (2010), An study on the setup of master plan for water reuse, Ministry of environment, pp. 1-22

3.
Khan A.H. (1986) Desalination processes and multistage flash distillation practice, Elsevier

4.
Giglia, S., and Krishnan, M. (2008) High sensitivity binary gas integrity test for membrane filters, Journal of Membrane Science, 323, pp. 60-66.

5.
Adam, S.S., Jacangelo, J.G., Laine, J.M. (1995) Low-pressure membranes: assessing integrity. AWWA3, pp. 62-75

6.
Randles, N. (1997) Large scale perating experience in membrane systems for water and waste water reclamation. Desalination 108 (1-3), pp. 205-211

7.
Guo, H., Wyart, Y., Perot, J., Nauleau, F., Moulin, P. (2010) Application of magnetic nanoparticles for UF membrane integrity monitoring at low-pressure operation, Journal of Membrane Science, 350, pp. 172-179.

8.
Cheryan, M. (1998) Ultrafiltration and microfiltration handbook. Technomic Publishing Company

9.
Panglisch, S., Deinert, U., Dautzenberg, W., Kiepke, O., Gimbel, R. (1998) Monitoring the integrity of capillary membranes by particle counters, Desalination 119 (1-3), pp. 65-72

10.
Suh, C., Choi, B.G., Lee, S.H., Kim, D.I., Cho, J.W. (2011) Application of genetic programming to develop the model for estimation membrane damage in the membrane integrity test using fluorescent nanoparticle, Desalination 281, pp. 80-87

11.
Choi, Y.K., Kim, C.A., Kim, H.J., Cho, J.W. (2014) Estimation of damage area on membrane surface by application of fluorescent particles as a surrogate, Journal of Korean Society of Water and Wastewater, Vol. 28, No.2, pp. 151-160

12.
Choi, S.H. Yang, J., Suh, C. , Cho, J.W. (2011) Use of fluorescent silica particles for checking the integrity of microfiltration membranes, Journal of Membrane Science 367, pp. 306-313

13.
David, H., Furukawa, P.E., Ch, E. (2008) NWRI Final preject Report: a Global Perspective of Low Pressure Membranes

14.
Guo, H., Wyart, Y., Perot, J., Nauleau, F., Moulin, P. (2010) Low-pressure membrane integrity tests for drinking water treatment a review. Water research, 44, pp. 41-57

15.
Deluhery, J., Rajagopalan, N. (2008) Use of paramagnetic particles in membrane integrity testing, Journal of Membrane Science 318, pp. 176-181

16.
Phattaranawik, J., Fane, A.G., Wong, F.S. (2008) Novel membrane-based sensor for online membrane integrity momitoring, Journal of Membrane Science 323, pp. 113-124

17.
Gitis, V., Haught, R.C., Clark, R.M., Gun, J., Lev, O. (2006) Application of nanoscale probes for the evaluation of the integrity of ultrafiltration membranes, Journal of Membrane Science 276, pp. 185-192