Design, Build, Operate and Maintain Contract for Integrated Industrial Wastewater Treatment Works, Phase I

Date: January 2021 – February 2025
Client: The Public Works Authority

Project overview

The Integrated Industrial Wastewater Treatment Works Phase I (IIWWTW) will provide treatment for up to 10,000m3/d of tankered industrial wastewaters arising from light industries generated within the Doha Industrial Area Catchment.

The new IIWWTW Phase I facility will be designed with the flexibility to treat the range of influent characteristics representative of industrial activities in the catchment to Treated Industrial Effluent (TIE) standards. It will be constructed approximately 2km Southwest of Doha Industrial Area, within the designated PIN boundary and in the vicinity of the existing Industrial Area Sewerage Treatment Works (Phase 1 & 2A and extension 2B) in order to minimize cost and footprint, and allow for proximity to the existing and new deep injection wells for blended treated effluent disposal.

With the Client – the Public Works Authority that ensures the best solutions are used within the projects, often exceeding any international requirements and norms, the principal treatment processes to be included in the design are:

  • Screening and Grit Removal
  • Equalization
  • Oil Removal
  • Dissolved Air Flotation
  • Hybrid Primary Clarifier
  • Biological treatment (SBRs)
  • Advanced Oxidation Process (AOP)
  • Lamella Clarifier
  • Chlorination
  • Filtration units (Dual Media Filters and Granular Activated Carbon Filters
  • Post Chlorination
  • Blending units (TIE and existing TSE)
  • Sludge treatment (Bio/Inert)
  • Oil Recycling units
  • Odor Control

Our missions

The IIWWTW project is implemented within a Design, Build, Operate and Maintain (DBO&M) Contract. Egis scope of works includes the below services that have been categorized into the following activities:

1. Project management and administration

  • Road Openings (RO)
  • As-built drawings
  • Drainage Projects Prime Documents Section (DPPDS)
  • Utility Corridors Agreements
  • Community Involvement Activity
  • Right-of-Way (RoW) Assistance
  • Schedule Updates
  • Payment Requests
  • Claims by and Disputes with the DBO&M contractor

2. Post contract professional design review and related oversight activities
3. General and site supervision
4. Acceptance, close-out and warranty activities