Namibia’s first industrial water recycling plant, showcasing exemplary cooperation in Windhoek.

Treating various industrial effluents, mainly discharged by an abattoir, a brewery and a tannery.

As leader of the UWTC Joint Venture, WABAG was awarded a BOOT contract for an effluent treatment plant at the Ujams Industrial Park, north of Windhoek. The project’s goal is to treat and reclaim industrial effluents for reuse in augmenting the Klein-Windhoek River and applications like dust control in road construction. Future uses may include urban irrigation and industrial reuse. To manage a range of contaminants, WABAG implemented an innovative treatment process using MICROPUR® fine sieving, MBR, UV disinfection, and sludge and exhaust air treatment. The plant, with a capacity of 5,175 m³/day, was inaugurated in October 2014 and has been in full operation since.

• Scope: BOOT: Financing, piloting, detail engineering, equipment supply, construction and installation, commissioning and O&M (21 years).
• Technologies:
• • • Fine Screen
    • Grit Separation
    • Dry weather buffer tank including pH correction
    • MICROPUR-MBR®: Combination of the advanced fine sieving technology MICROPUR® with the well-known membrane bioreactor (MBR) technology
    • Microsieving of raw wastewater
    • Biological process of denitrification and nitrification
    • Membrane filtration with hollow fiber membranes
    • UV-Disinfection
    • Clear water tank incl. utilities and firefighting
    • Sludge treatment
    • Odour treatment
• Impact: The construction of the reclamation plant, achieved through exemplary collaboration between the City of Windhoek, industries in the Ujams Industrial Park, and the Ujams Wastewater Treatment Company (UWTC), has significantly improved water quality in the Swakoppoort Dam—the city’s drinking water catchment area – has improved significantly and contributes to a secure water supply for Namibia’s urban center in the arid region south of the Sahara.