Effects of pipe materials on biofouling under controlled hydrodynamic conditions

Journal of Water Reuse and Desalination

Gamri, S.¹  Tomas, S.¹  Roche, N.²  Molle, B.²  Soric, A.² 

[1] Aix Marseille University, CNRS, Centrale Marseille, M2P2 UMR 7340, Europole de l'Arbois, 13545 Aix en Provence Cedex 4, France;UMR Geau, Irstea, LERMI, 361 rue Jean François Breton BP 5095, 34196 Montpellier Cedex 5, France

关键词: biofilm;    irrigation;    PE;    PVC;    shear stress;    wastewater;   

DOI  :  10.2166/wrd.2015.037

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

Experiments were carried out to investigate pipe material impacts on biofouling, at high effluent concentration levels and under controlled hydrodynamic conditions. Two velocities (0.4 and 0.8 m s−1) were used to monitor biofilm growth on polyethylene (PE) and polyvinylchloride (PVC) pipe walls, respectively. These conditions were established based on wastewater irrigation practices. A decrease in biomass is observed after 49 days of experiments for both velocities and may be related to biofilm detachment. Biofilm growth is greater at 0.8 m s−1. For both velocities, PVC is less sensitive to biofilm growth than PE. Pipe straightness plays a primary role in biofilm growth control. This effect is more significant than pipe surface characteristics (roughness, hydrophobic/hydrophilic properties).

【 授权许可】

CC BY-NC-ND