WASTE WATER TREATMENT PLANT KUBRATOVO (WWTP) – SOFIA – ANAEROBIC SLUDGE STABILIZATION PLANT (DIGESTERS)

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WASTE WATER TREATMENT PLANT KUBRATOVO (WWTP) – SOFIA – ANAEROBIC SLUDGE STABILIZATION PLANT (DIGESTERS)

Employer/ Beneficiary: Passavant-Roediger Anlagenbau GmbH – Germany/ Sofia Municipality by concessioner “Sofiyska voda” AD
Implementation period: 04/2003 – 11/2009

Design parameters:

  • Anaerobic Sludge Stabilization Plant with Biogas Utilization with following parameters:
    – Anaerobic digesters – 4 pcs., each digester with a volume of 7 000 m³;
    – Amount of treated sludge – 1 680 ÷ 1 920 m³/d;
    – Amount of produced biogas – 27 000 ÷ 40 000 m³/d.
  • Parameters WWTP – Kubratovo:
    – Capacity 1 300 000 PE
    – Wastewater quantity 484 000 m³/d.
  • Performed activities:
    Site survey and inspection of existing facilities;
  • Preparation of two-phase design by all design parts:
    – Preliminary Design;
    – Issuing a construction permit;
    – Detailed Design;
    – Coordination in accordance with the different phases of construction;
  • Preparation of tender documents for the local civil works under FIDIC Conditions of Contract;
  • Assistance in tendering and evaluation of offers; Construction supervision on site as FIDIC Engineer;
  • Bill of quantities for construction and construction works;
  • Supervision of site construction, such as FIDIC Engineer;
  • Assistance in start-up procedures and commissioning;
  • Preparation of us-built documentation, issuing a use permit (2009);

Investment value of the project: 4 602 000 € (without VAT)