SMEC has commenced design for the new wastewater treatment works in Zone 5 of the Coega Special Economic Zone (SEZ). This project represents a significant milestone in sustainable wastewater reuse in South Africa’s Eastern Cape, showcasing SMEC’s commitment to delivering innovative, sustainable and environmentally responsible infrastructure that supports economic growth.
Empowering economic growth with environmental responsibility
The Coega SEZ, one of South Africa’s premier industrial zones, is designed to attract both domestic and international investors through advanced infrastructure and strategic access to global markets. The Coega Development Corporation (CDC), a state-owned entity in South Africa, is committed to sustainable development, balancing economic opportunity with rigorous environmental stewardship.
Zone 5 of the Coega SEZ is designated as a core area for industrial expansion and development, with a specific focus on sustainable resource management. The Coega Wastewater Treatment Works in Zone 5 will address the increasing demand for sustainable water management solutions.
Project scope and key objectives
SMEC’s scope for the new Coega Wastewater Treatment Works, Zone 5, covers the entire consulting engineering cycle of the facility, including planning, full design, construction management and commissioning, structured in a series of stages. The key objectives include:
- Scalable, future-proofed design: The treatment works will be engineered with a modular approach, allowing for phased capacity expansions to meet the SEZ’s needs through 2040 and beyond. Initial capacity will support both domestic and industrial wastewater streams with a capacity of 20 Ml/day for each treatment facility.
- Innovative water treatment technology: SMEC’s design will feature advanced treatment processes, including the option to run the works in multiple process options, optimised energy usage and automation, ensuring compliance with the highest environmental and operational standards.
- Environmental compliance and sustainable effluent management: The project will incorporate sustainable practices to meet South Africa’s National Water Act standards. Treated effluent will be redirected for industrial reuse within the SEZ, reducing reliance on local potable water sources and promoting a circular economy model. The beneficiation of the sludge within the SEZ will help to minimise environmental impact.
- Green energy: SMEC is currently supporting talks that will allow possible Green Hydrogen generation from the waste products of the treatment process. As the Coega SEZ is situated close to one of the larger ports of South Africa, this could be used to fuel ships through Green Maritime Methanol.
The project planning phase is expected to conclude in Q1 of 2025, whilst the construction phase is planned for later in 2025. The estimated construction time for a 20Ml/d module is 18 to 24 months.
International expertise, local knowledge
SMEC’s appointment underscores the company’s ability to bring global best practice to regional areas, leveraging international expertise while benefiting from the site’s proximity, located just a 20-minute drive from its Gqeberha office.