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  • This is a repository copy of The frictional resistance induced by bacterial based biofouling in drainage pipelines.

    White Rose Research Online URL for this paper: http://eprints.whiterose.ac.uk/105259/

    Version: Accepted Version

    Article:

    Cowle, MW, Babatunde, AO orcid.org/0000-0003-4730-9673 and Bockelmann-Evans, BN (2017) The frictional resistance induced by bacterial based biofouling in drainage pipelines. Journal of Hydraulic Research, 55 (2). pp. 269-283. ISSN 0022-1686

    https://doi.org/10.1080/00221686.2016.1212411

    This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Hydraulic Research on 7 September 2016, available online: http://dx.doi.org/10.1080/00221686.2016.1212411

    eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/

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    URL: http://mc.manuscriptcentral.com/jhr

    Journal of Hydraulic Research

  • Assay ��

    (x10 4 )

    ��

    (ms

    1

    )

    Temperature

    ( º C)

    v

    (x107)

    (m2s 1)

    ρ

    (kgm

    2

    )

    COD

    (mgl

    1

    )

    TOC

    (mgl

    1

    )

    DOC

    (mgl

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    TN

    (mgl

    1

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    TP

    (mgl

    1

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    Ammonium (mgl

    1 )

    Nitrate

    (mgl

    1

    )

    Iron

    (mgl

    1

    )

    Manganese

    (mgl

    1

    )

    ��= 5.98x10 4

    Av. 5.98 0.58 21.3 9.70 998.0 536.4 238.2 211.5 49.5 12.1 0.41 0.50 0.11 0.13

    σ 0.12 0.01 0.6 0.00 0.2 40.5 16.1 14.3 0.6 1.20 0.23 0.28 0.05 0.06

    n 60 60 60 60 60 20 10 10 2 2 6 6 6 6

    �� = 7.82x10 4

    Av. 7.81 0.76 21.2 9.72 998.0 545.6 251.2 50.3 10.8 0.25 0.33 0.10 0.30

    σ 0.17 0.01 0.7 0.00 0.2 21.2 9.5 0.4 0.8 0.23 0.28 0.07 0.20

    n 60 60 60 60 60 20 20 2 4 4 4 4 4

    �� = 1.00x10 5

    Av. 1.01 0.96 21.8 9.59 997.9 548.1 241.6 190.6 51.2 11.0 0.75 1.09 0.15 0.39

    σ 0.29 0.02 0.6 0.00 0.2 23.4 12.2 9.6 0.9 0.8 0.02 0.11 0.09 0.10

    n 60 60 60 60 60 20 9 9 11 3 4 4 5 5

    Page 1 of 39

    URL: http://mc.manuscriptcentral.com/jhr

    Journal of Hydraulic Research

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

  • ���������� � � ���

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    τw

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    )

    cf

    (x10�3)

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    � = 5.98x10 4

    Av. 0.034 0.038 1.42 8.54 0.637 25.05

    σ 0.000 0.001 0.07 0.12 0.023 1.76

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    Av. 0.030 0.045 2.15 7.57 0.445 20.94

    σ 0.001 0.001 0.05 0.18 0.031 1.34

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    Av. 0.026 0.054 2.95 6.44 0.223 12.79

    σ 0.001 0.001 0.07 0.19 0.027 1.41

    Page 3 of 39

    URL: http://mc.manuscriptcentral.com/jhr

    Journal of Hydraulic Research

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

  • x

    (ii) 3.35 m

    z

    (iii) 5.0 m

    (iv) 1.0 m

    Guide :

    y Test Pipe inlet

    Pipe overflow outlet

    Standpipe, 0.3 m

    Return Pipe (D ≈ 0.08 m)

    Centrifugal Pump

    S-HDPE Test Pipe (D ≈ 0.10 m)

    Storage

    (ii) Run-in section (iii) Test section (iv) Run-out and visualisation section

    Overflow baffle

    Flow Direction

    (i) ≈ 12.0 m

    (i) Primary recirculation Network

    Tank

    Page 4 of 39

    URL: http://mc.manuscriptcentral.com/jhr

    Journal of Hydraulic Research

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

  • x (m) y (m)

    0.00 0.50 3.35 3.65 6.35 6.65 8.35 3.50 6.50 8.50

    P1

    Run-in Section, 3.35 Test Section, 5.00 m

    P2 P3 P4 P5 Pipe Couple

    S-HDPE pipe (D = 0.1 m)

    Flow Direction

    (i)

    (ii) (iii)

    (iv)

    S-HDPE pipe

    Pressure Ring

    Static Wall Tap

    0.75mm (d h )

    7.00mm

    2.50mm

    z

    y

    45°

    (i)-(iv) Pressure Taps Guide

    (3.3d h )

    (lh)

    Connection to

    Transducer

    Longitudinal section view

    Cross-section view

    Air Bleed Valve

    Page 5 of 39

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    Journal of Hydraulic Research

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

  • 1.0

    1.5

    2.0

    2.5

    3.0

    3.5

    4.0

    4.5

    5.0

    0 100 200 300 400 500

    そ (x

    10 -2 )

    t (h)

    ReD = 5.98E+04 ReD

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