La formación de la biopelícula en acueductos y alcantarillados afecta el flujo.
El crecimiento de esta placa adherida a las paredes del conducto se debe a la Biomasa con la acción de varios tipos de bacterias.
Se ha investigado al respecto , y son propuestas varias operaciones unitarias para disminuir o deprimir el crecimiento de la biopelícula.
El efecto de la modificación de la rugosidad interna de los conductos está siendo evaluado por varios investigadores,
Dr. Andrew Barton tuvo la gentileza de enviarme una copia de su investigación :
Hydraulic Roughness of Biofouled Pipes, Biofilm Character,
and Measured Improvements from Cleaning
Andrew F. Barton, M.ASCE1; Michael R. Wallis2; Jane E. Sargison3; Alexandru Buia4; andGregory J. Walker5
Abstract: The hydraulic performance of pipelines can be significantly affected by the presence of biological growth on internal surfaces.
The change in wall roughness brought about by the biofilms has been studied by the use of headloss tests, precleaning and postcleaning
of the pipelines in three Tasmanian hydroelectric schemes. Results of the headloss testing show that improvements to hydraulic efficiency
can be achieved from the cleaning of biofouling material. The data, when plotted as a Moody diagram, shows that the friction law for
conduits roughened by biological growths may not always follow a Colebrook-White type relationship, although the results are too narrow
in Reynolds number to be conclusive. It was found that bacteria made up the majority of the biofilm biomass in the pipelines studied.
Based on molecular analysis, members of the class Alphaproteobacteria were the most frequently detected followed by members of the
phylum Chloroflexi.
DOI: 10.1061/ ASCE 0733-9429 2008 134:6 852
CE Database subject headings: Hydraulic Roughness; Biofilm; Pipe flow; Water pipelines.
Thanks you. Dr. BARTON,
Qualifications
BE(Env)(Hons) DeakinMEngSc Monash
PhD Tasmania
Teaching Areas
ENCIV3030 (Water Drainage Infrastructure)ENMIN7050 (Mine Environmental Engineering)
ENCOR2100 (Fluids and Thermofluids)
ENCIV3060 (Waste and Wastewater Infrastructure)
Research Interests
Water resource planning and multiple reservoir operationsWater sharing, entitlements and allocation frameworks
Ecohydraulics/ecohydrology and environmental flows
Biofilms and biofouling
Experimental fluid dynamics
Climate change
System optimisation
Numerical modelling
Publications
http://scholar.google.com.au/citations?user=Ydfj6rEAAAAJ&hl=en&oi=sra
School of Science, Information Technology and Engineering
University of Ballarat - AUSTRALIA
Visitar la University of Ballarat a través del siguiente enlace:
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Otra investigación sobre bio película:
Otra investigación sobre bio película:
Effect of Biofilm Formation on Roughness Coefficient and Solids Deposition in Small-Diameter PVC Sewer Pipes
ISSN (print): 0733-9372
ISSN (online): 1943-7870
Publisher: American Society of Civil Engineers
Karloren Guzmán1; Enrique J. La Motta2; J. Alex McCorquodale3; Soli Rojas4; and Maria Ermogenous5
Read More: http://ascelibrary.org/action/showAbstract?page=364&volume=133&issue=4&journalCode=joeedu
1Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of New Orleans, New Orleans, LA.
2Professor, Dept. of Civil and Environmental Engineering, Univ. of New Orleans, New Orleans, LA (corresponding author). E-mail: elamotta@uno.edu
3Professor, Dept. of Civil and Environmental Engineering, Univ. of New Orleans, New Orleans, LA.
4Engineer, Montgomery, Watson, and Harza, Tampa, FL.
5Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of New Orleans, New Orleans, LA.
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The Impact of Biofilm Development on Pipe Roughness and Velocity Profile
Conference Information :
World Environmental and Water Resources Congress 2009
Kansas City, Missouri, United States
May 17-21, 2009
Publication Data
ISBN (print): 978-0-7844-1036-3
Publisher: American Society of Civil Engineers
Read More: http://ascelibrary.org/doi/abs/10.1061/41036%28342%2913
