Influence of trace elements in nitrification

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Influence of trace elements in nitrification. Introduction Nitrification: What is it and why is it important? Problems met by OASEN Company Batch experiment Conclusions. Different ways to remove ammonium: Break point chlorination (not used in the Netherlands) - PowerPoint PPT Presentation

Text of Influence of trace elements in nitrification

  • Influence of trace elements in nitrification

  • IntroductionNitrification: What is it and why is it important?Problems met by OASEN CompanyBatch experimentConclusions

  • Different ways to remove ammonium:Break point chlorination (not used in the Netherlands)Adsorption of ammonium on zeolites, ions exchangeStrippingBiological conversion: Nitrification

  • NitrificationBiological oxydation of ammonium into nitrite and then nitrate.

    NH3 + 1,5 O2 + nitrosomonas NO2- +H2O + H+ NO2- + 0,5 O2 + nitrospira NO3-

  • Why is it important?

    pH > 8 => NH3 formation

    Nitrite formation Poisonous for fish Blue Baby syndrom

    NH4: Substrate for many bacteria

  • Ammonium in filter effluent

    Chart5

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    4.87010.15

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    4.47480.4991

    4.41170.5191

    4.15060.6693

    3.80090.9944

    3.71350.4739

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    Ammonium in filter effluent

    Ammonium in filter effluent [ppm NH 4 ]

    ruw

    ruw

    5.01339806.42

    4.766.7334064

    340666.727.06

    5.026.276.12

    3.97341556.11

    4.446.376.36

    4.366.234248

    4.565.7934261

    4.956.834338

    5.076.0234386

    4.625.6534389

    4.286.3834393

    4.486.5134396

    4.266.0334400

    4.266.2634403

    4.26.1834407

    344715.4234410

    4.23344215.93

    345496.5834480

    4.0656.6734481

    346496.4334484

    3.8676.334485

    346666.134486

    4.6176.2634487

    4.0016.1634506

    4.9696.1334617

    46.5934655

    3.946.2234709

    3.983478034780

    3.865347936.19

    3.9146.977.07

    4.0316.356.293

    4.086.266.44

    4.096.326.26

    4.1946.476.21

    3.949348165.98

    4.0626.636.58

    3.7596.716.68

    3.636.466.51

    3.786.576.44

    348986.446.65

    3.7646.126.16

    3.0075.815.86

    349485.525.87

    4.0045.525.41

    3.4056.5455.745

    3.8946.296.24

    350373495034950

    3.8746.346.13

    3.7636.236.29

    7.5575.916.01

    3.775.8335039

    2.9916.36.19

    351225.925.99

    4.2351025.84

    3.7075.95.8

    3.811351075.77

    3.606351105.79

    3.671351145.91

    3.666351175.92

    4.07351215.93

    3.7913512235122

    3.8223512335123

    3.5613512411.71

    3.7285.975.91

    3.726351316.12

    3.719351385.39

    3.71351435.72

    3.698351455.89

    3.699351506.04

    3.707351525.75

    3.7945.9219.49

    3.789351595.7

    3.806351655.82

    3.88351665.84

    3.806351725.69

    3.83351735.69

    35219351775.67

    35221351805.53

    3.7055.895.65

    3.516351875.82

    3.585.585.76

    3.8135.595.72

    3.9185.755.75

    3.5665.675.87

    3.6875.785.74

    4.5515.865.96

    3.378352196.13

    3.3885.754.658

    3.4615.495.52

    3.8026.085.77

    3.4566.025.82

    3.285.635.72

    353106.426.34

    3.3286.66.24

    353187.326.04

    2.8236.486.32

    6.0746.666.7

    3.8446.696.43

    3.8056.346.29

    3.776.355.85

    3.7986.175.27

    3.6825.334.24

    3.9666.776.38

    4.5446.56.52

    4.9185.916.22

    3.9686.36.24

    4.4376.296.07

    5.3786.466.21

    4.0125.96.45

    3.96.576.42

    4.1996.526.35

    1.9236.646.96

    3.4326.116.31

    3.875.935.61

    354526.375.85

    4.0395.745.9

    354586.375.57

    4.3225.7335429

    4.2326.285.65

    4.096.295.88

    4.2697.16.6

    4.1316.475.94

    3.516.676.24

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    3.756.175.72

    3.9756.386

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    355296.135.68

    4.0745.85.64

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    4.15.765.67

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    4.0495.915.59

    4.3596.315.71

    4.6186.345.83

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    4.735.965.76

    4.294.925.21

    4.065.825.43

    3.845.815.59

    3.4566.546.03

    3.4956.986.01

    3.3486.765.87

    3.5176.935.99

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    4.0875.495.4

    4.326.236.09

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    3.2659.1535786

    3.2225.365.53

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    3.5343.954.472

    358804.5235807

    3.6776.226.25

    3.4215.7635814

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    3.575.5535824

    3.6845.045.48

    3.855.6335831

    2.766.065.64

    359573583835838

    6.4526.0235842

    359685.595.52

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    4.355.255.46

    359785.1735856

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    359976.15.56

    3.2645.8935899

    3.575.354.92

    360065.785.53

    3.566.0735908

    360135.725.41

    3.7095.4535914

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    3.415.2435926

    360265.645.68

    360275.925.6

    360285.955.82

    3.035.6735943

    360326.095.76

    360335.7135950

    360346.15.76

    360356.1835957

    3.2175.7