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Irrigation Science

, Volume 32, Issue 1, pp 77–85 | Cite as

Biofilm development in micro-irrigation emitters for wastewater reuse

  • Souha GamriEmail author
  • Audrey Soric
  • Séverine Tomas
  • Bruno Molle
  • Nicolas Roche
Original Paper

Abstract

Laboratory experiments were carried out to investigate bioclogging on three types of online emitters using synthetic wastewater filtered at 10 μm (COD = 200 mg L−1). The three types of emitters were as follows: non-pressure-compensating emitters delivering 2 L h−1 (NPC2), non-pressure-compensating emitters delivering 4 L h−1 (NPC4) and pressure-compensating emitters delivering 2.2 L h−1 (PC). They were plugged on two parallel pipe diameters (16 and 20 mm). Emitter performance was followed by flow rate measurements. The results showed that PC emitters seemed to be more sensitive to clogging than NPC emitters. Biofilm was observed mainly on NPC flow paths and PC membranes; its presence was also confirmed by the assessment of different water quality parameters such as total organic carbon and pH. Experimental results compared with a model designed with computational fluid dynamics Software (ANSYS Fluent®) showed relations between biofilm development and velocity distribution on NPC flow paths. Finally, pipe diameter also appeared to be a parameter inducing emitter clogging.

Keywords

Chemical Oxygen Demand Total Organic Carbon Flow Path Drip Irrigation Synthetic Wastewater 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Souha Gamri
    • 1
    • 2
    Email author
  • Audrey Soric
    • 1
  • Séverine Tomas
    • 2
  • Bruno Molle
    • 2
  • Nicolas Roche
    • 1
  1. 1.Aix Marseille University - Centrale Marseille - CNRS Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2,UMR 7340)Aix en Provence Cedex 04France
  2. 2.Laboratoire des Essais et recherches des Matériaux d’Irrigation irstea centre d’Aix en ProvenceAix en Provence Cedex 05France

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