Adaptation of the La Chiusa purification plant

infrastruttura di un depuratore con una vasca d'acqua

Description and objectives

 

The project aims to improve the sludge line of the "La Chiusa" sewage purification plant in Velletri, which serves a large part of the municipal territory with a capacity of 40,000 equivalent inhabitants (e.i.). This intervention is aimed at complying with the limits established by Legislative Decree 152/06 and the Regional Water Protection Plan (RWPP) of Lazio, thus protecting the receiving water body, Fosso della Regina.

Project Objectives

 

  • Adapt the system to comply with current regulations.

     

  • Improve the efficiency of sludge treatment.

     

  • Reduce odour emissions and improve air quality.

     

  • Increase the safety and functionality of the system.

 

 

Planned Interventions

 

Adjustment of the medium/low voltage transformer section

  • Installation of a new MV panel and two 800 kVA transformers.

  • Construction of a new prefabricated concrete box for the LV general framework.

     

Trattamento dei fanghi di supero

  • Construction of a new aerobic stabilisation basin.

  • Installation of a circular thickening tank.

  • Replacement of the existing press belt with a new high-performance centrifuge..

  • Construction of a containment box for the sludge box.

     

     

Covers and air treatment

    • Installation of aluminium covers on the sludge thickening and stabilisation tanks.

    • Installation of an air treatment system for these units and for mechanical dehydration.

    Internal viability and arrangement of green areas

    • Expansion and arrangement of internal roads.

    • Creation of new flooring, tree planting and reprofiling of the escarpment behind the current digestion basin.

       

    Medium and fine sieving

    • Improvements in sieving units to filter debris.

     

    Rainwater treatment

    • Creation of a section dedicated to rainwater treatment.

    Deodorisation

    • Creation of a new section for the deodorisation of emissions, using a biofilter and a scrubber.

    Carpentry and equipment

    • Installation of metal structures, iron works, electromechanical equipment and machinery for treatment units.

       

       

    Provisional works

    • Securing a dangerous building by means of wooden restraint underpinning.

    Detail project

     

    Customer  

    Acea Ato 2

    Site  

    Municipality of Velletri

    Timetable  

    Start: January 2011
    Ongoing

    Detail of the service  

    Executive project

    Key numbers

    Service execution quota

     

    100% Acea Infrastructure SpA

    Work Amount

     

    10.338.000 €

    including security charges

    Sewage purification plant potential

     

    40.000 equivalent inhabitants

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