230,000 m³/d Drinking Water Treatment Plant Cluj with ZLD

Contract signed for Rehabilitation & Modernization of Water Treatment Plant Gilau, Romania

08.03.2021

UNIHA is pleased to announce the signing of a contract for the rehabilitation & modernization of the Gilău Water Treatment Plant in Cluj, the second largest city of Romania. The project for the drinking water treatment plant of a capacity of 228,960 m³/day will be undertaken in consortium with WTE Wassertechnik GmbH. The client for the project is S.C. Compania de Apă Someș S.A.

The project aims at ensuring the availability of clean drinking water for the citizens of Cluj by improving the overall performance of the plant. Furthermore, the recovery of the plant will be maximized by treating the backwash waste water achieving Zero Liquid Discharge (ZLD). Initially, the Gilău Water Treatment Plant has been built since 1970 in multiple stages and constitutes one of the key plants in the region. Due to deficiencies in the treatment flow and components, the plant requires modernization. The raw water source is the Tarnita Lake and the treatment target is drinking water production in line with Romanian and European drinking water legislation.

Commencement of the works is scheduled to start within the first half of 2021, in line with all Covid-19 related health and safety measures.

The project will be executed within the Regional Development Project for the Water and Wastewater Infrastructure in Cluj and Salaj Counties 2014-2020 and is financed mostly by Cohesion Funds provided by the European Union as part of the Operational Programme for Large Infrastructure (POIM).

The newly modernized plant will (amongst others) consist of the following components:

  • Energy recovery from raw water intake
  • Raw water screening, pre-chlorination, coagulation
  • Decantation, double flow sand filtration with automatic backwash units
  • ZLD backwash water recovery
  • Product disinfection and pumping station
  • Laboratory & Pilot Plant

One of the major features of the refurbished plant will be the increase of the recovery of the plant up to Zero Liquid Discharge (ZLD) using backwash water recycling. Furthermore, state-of-the-art equipment and SCADA systems will be installed.

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