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Imola Tremonti selection, biostabilisation and recovery plant

Via Pediano - 40026 Imola (BO)

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Plant for the treatment of unseparated municipal waste, with the following aims:

  • separation of the dry fraction from the organic fraction;
  • biostabilisation of the organic fraction;
  • recovery of ferrous materials.

Page updated 26 August 2015

    Total treatment capacity of the plant
    150,000 tonnes/year
    Capacity of the biostabilisation section
    70,000 tonnes/year

    Description of the operating cycle

    • treatment of municipal solid waste;
    • stabilisation of the organic fraction deriving from on-site mechanical selection of unseparated waste or from third-party MSW mechanical selection plants.

    MSW treatment lines: 2 (Capacity: 25 tonnes/hour each)
    The incoming unseparated waste is unloaded into trenches capable of storing approximately 3,000 m of material. After elimination of any bulky fractions, the waste is sent to the automatic selection plant where, through grinding, screening and deferrisation operations, three homogeneous fractions are separated:

    • dry fraction (oversieve) sent to the non-reusable fraction management zone;
    • decomposable fraction (undersieve) sent to the biostabilisation tank;
    • ferrous fraction.

    The undersieve from the two lines is collected by rubber conveyor belts and sent to the oxidation section to undergo hygienisation and oxidation for the production of biostabilised material. Any organic fractions deriving from third-party plants are also delivered here.
    Oxidation of the organic substances is achieved by the turning of the material, with the aid of a wheeled turning machine which acts on each successive layer of waste in the rectangular tank, and by the measured administration of air through a ventilation system designed to ensure that the process takes place in the most efficient and controllable manner.

    Products leaving the plant

    Dry fraction with a high calorific value, biostabilised material for environmental reclamation and daily covering for landfills, and ferrous materials to be sent for material recovery.


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