REHABILITATION OF PRINCIPAL PUMPING STATION 4 PHASE 1 

The Challenge

Sharjah Municipality required the rehabilitation of a major pumping station serving both sewage and stormwater flows. The existing infrastructure faced issues with aging equipment, corrosion risks, and inadequate surge protection. These challenges threatened the reliability of the network, increased the risk of overflow during high-load conditions, and posed long-term operational inefficiencies. A sustainable, future-proof solution was necessary to ensure dependable service to the community.

Client

Sharjah Municipality

Industry

Municipality

EPC Contractor

Gulf Water Treatment CO. LTD

Location

Sharjah, U.A.E

Civil Contractor

Encover

GWT Solution

Gulf Water Treatment undertook the full rehabilitation with a focus on durability, hydraulic reliability, and automation. Two reinforced concrete wet wells were constructed—one dedicated to foul sewage and another to stormwater. These were interconnected through motorized actuated penstocks, allowing flexible control while also enabling isolation during peak inflows to prevent overflow.

To extend service life, all interior surfaces were lined with H₂S- and acid-resistant materials, safeguarding against chemical corrosion. Advanced penstock gates fabricated from SS316L stainless steel were installed at inlets, each equipped with PLC-based digital communication and position indicators, enabling real-time monitoring and control. A comprehensive surge analysis was carried out on both foul and stormwater rising mains, ensuring the system could handle pressure fluctuations without risk of damage. Surge protection was integrated into the network design, enhancing reliability during transient conditions.

The pumping configuration included a dry-well/wet-well system with centrifugal pumps for sewage and submersible pumps for stormwater. MCC rooms, valve chambers, odor control foundations, and civil structures were all upgraded with modern finishes, such as epoxy flooring, GRP covers, and interlock access roads. Collectively, these measures transformed the station into a robust and future-ready facility capable of meeting growing municipal demands.

Scope of Work

The rehabilitation encompassed both civil and electromechanical components, delivered as a turnkey solution:

The scope covered the construction of reinforced concrete wet wells, MCC rooms, valve and flow meter chambers, odor control foundations, and supporting civil works such as compound walls, drainage systems, and access infrastructure. On the electromechanical side, the project delivered sewage and stormwater pumps, motorized actuated penstocks, MCC panels, surge protection systems, and complete PLC integration for automated operation.

Our Approach

We approached the project with a balance of engineering precision and sustainability. By combining detailed hydraulic modeling with practical on-site execution, we ensured the upgraded station could manage current and future demands. Close coordination with Sharjah Municipality and the civil contractor enabled seamless integration of mechanical, electrical, and civil works. Each design choice—from corrosion-resistant linings to smart automation—was guided by the objective of delivering a reliable, safe, and sustainable municipal pumping solution.

Key Benefits

  • Reliability: Enhanced system resilience with modernized pumps, surge protection, and PLC-integrated controls.
  • Durability: Use of acid- and H₂S-resistant materials ensures long-term performance and reduced maintenance.
  • Operational Efficiency: Improved hydraulic design and automation allow for smoother, safer operation.
  • Community Impact: Reduced risk of overflow and environmental hazards, supporting public health and safety.

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