Water Treatment Plant 2.3

Water Treatment Plant 2.3 is one of five industrial water treatment plants we delivered in Qatar. Delivered with a pre-engineered steel weather-protection shelter, the plant treated groundwater drainage to discharge standard and was operated under full O&M through to handover in 2021.

Project scope (EPC)

• Engineering & design of the treatment process and the supporting civil and structural works.
• Procurement & construction of the plant together with a pre-engineered steel weather-protection building.
• Commissioning and performance verification against the treated-water specification.
• Operations & maintenance with on-site staffing, laboratory testing, consumables, sludge removal, and power generation through to handover.

Design & process

The plant treats groundwater drainage from a dewatering process, reducing the pollutant load before controlled discharge. It is designed for a hydraulic load of up to 6,000 m³/day (70 l/s). Designed for an inlet load of up to TSS 1,000 mg/l, the treatment train delivers a treated-water specification of TSS ≤10 mg/l, oil & grease ≤0.5 mg/l, BOD₅ ≤10 mg/l, COD ≤20 mg/l, E. coli ≤2.3 MPN/100 ml, and pH held between 6.5 and 7.5.

Technologies deployed

• Coagulation and flocculation using Polyaluminium Chloride and polymer dosing
• Sedimentation and clarification
• Multimedia / sand filtration
• Activated carbon adsorption
• Manganese and iron (Mn/Fe) reduction
• Sludge thickening and removal
• Independent diesel power generation with standby redundancy
• Pre-engineered steel weather-protection building (multi-span, designed to international steel codes)

Construction & commissioning timeline

• Delivered as part of the second-cluster plants alongside Plant 2.2.
• Construction and installation of a pre-engineered steel weather-protection shelter (October–November 2020).
• Continuous O&M maintained through to project handover in 2021.

Quality & HSE

Delivery was governed by our QA/QC approach — inspection, testing, and documentation against the treated-water specification — and by HSE management covering site safety, environmental control, and regulatory compliance. Laboratory testing and monthly operating reports tracked performance throughout the operations period.

Engineering challenges solved

• Protecting sensitive process equipment from the climate with a purpose-built steel shelter.
• Holding the treated-water specification against a variable inlet load through controlled coagulant and polymer dosing.
• Maintaining power availability on independent diesel generation across the cluster.
• Coordinating structural fabrication and installation alongside ongoing plant operation.

Operations and maintenance were provided by SGS through to handover in 2021. The plant is no longer under our O&M; the experience, systems, and standards demonstrated here are directly transferable to our solar PV and civil infrastructure delivery.