DuPont™ MemPulse™ and OxyMem™ MABR Paired to Advance Wastewater Treatment in New Zealand

New Zealand public water utility Watercare and its project design and build contractor, Apex Water, will pair OxyMem™ MABR and DuPont™ MEMCOR™ MBR for a new wastewater treatment plant

WILMINGTON, Del., August 6, 2025 — In collaboration with the Waikato District Council, Watercare, a public water utility in New Zealand has selected DuPont™ MemPulse™ membrane bioreactor (MBR) and OxyMem™ membrane aerated bioreactor (MABR) technology for a new 6.0 MLD wastewater treatment plant to serve the community of Raglan in the District of Waikato in New Zealand. This will be the first deployment of OxyMem™ MABR modules in the country—marking a significant milestone in the adoption of advanced wastewater treatment technologies in New Zealand.

In addition to enabling greater automation and reducing on-site personnel requirements, this multi-tech modular solution can provide compliance with New Zealand’s stringent discharge regulations and provide additional treatment capacity to future-proof the plant. 

Raglan’s existing wastewater treatment plant combines an oxidation pond system with ultra-violet (UV) treatment before the treated wastewater is discharged into the sea on the outgoing tide. The treatment upgrade to MemPulse™ MBR and OxyMem™ MABR is the first step in removing the connection to the harbor. The clear water permeate discharge from the new treatment plant has helped gain support for a regenerated land-based discharge. 

The decision to combine MemPulse™ MBR, which can provide the plant with high quality effluent, with OxyMem™ MABR will help Watercare achieve a lower total nitrogen concentration, making this community preference for land discharge viable. 

“This robust multi-tech solution, blending DuPont™ MemPulse™ MBR and OxyMem™ MABR can provide consistent long-term wastewater treatment performance, while providing additional capacity to address future demand,” said Kee Hoe Ng, Project Sales Leader from DuPont Water Solutions. “This is also the first deployment of our OxyMem™ MABR modules in New Zealand. In addition to making the plant even easier to operate, the incorporation of MABR will help operators achieve a lower total nitrogen concentration, supporting the development of land discharge options in response to community appeals.”

The new wastewater treatment plant in Raglan was commissioned by Apex Water in June and July and Watercare plans to commence treatment operations by August 2025.  

DuPont Water Solutions’ technologies are helping to purify more than 50 million gallons of water every minute in 112 countries across the world.  DuPont offers market-leading technologies to address a variety of challenges faced by water treatment municipalities, seawater desalination plants, and industrial water users, including the microelectronics industry, through a broad portfolio of membranes, resins, and complete systems. The team is also innovating solutions that can help balance the world’s growing water and energy demands, with products that support the production of electricity, lithium, and green hydrogen.

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