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  • Chemical oxygen demand (COD) in effluents from industrial operations, in tonnes

    Related Material Issues

    Change view:

    • wdt_ID Direct chemical oxygen demand (COD) in effluents by unit (t) 2019 2020
      1 Suzano 5,027.76 6,288.82
      2 Rio Verde 53.00 55.23
      3 Limeira 3,619.74 4,919.20
      4 Jacareí 6,788.05 8,635.19
      5 Imperatriz 3,124.71 5,490.14
      6 Mucuri 10,439.62 11,754.98
      7 Aracruz 10,908.70 12,904.26
      8 Belém 63.69 147.70
      9 Maracanaú (Fortaleza)¹ 0.24 0.26
      10 Três Lagoas 23,264.01 25,144.00
    1. The Maracanaú Unit (Fortaleza) does not produce pulp or paper. Thus effluents are discharged directly into the public utility's network, as per the required standards, in amounts much lower than other units.

    Additional information:

    In 2020, the gross balance of Chemical Oxygen Demand (COD) of effluents discharged, increased by 19% compared with 2019. This reflects the 9.9% increase in production in the same period, mainly concentrated in the Imperatriz, Mucuri and Aracruz Units.

    In specific terms (kg of BOD per ton of product), Suzano recorded an increase of 8.4%—from 6.33 kg/t in 2019 to 6.86 kg/t in 2020. The number is below the target established for the industrial units (7.00 kg/t). Despite these numbers, Suzano remained within the baseline range of international standards (between 8.00 and 23.00 kg/t) set out by the IPPC (Integrated Pollution, Prevention and Control 2015 – European Commission).