About the Project
The City and County of Honolulu鈥檚 Sand Island Wastewater Treatment Plant (WWTP) Secondary Treatment Phase 1 project represents a major investment in Hawaii鈥檚 critical water infrastructure and environmental stewardship. This large鈥憇cale upgrade modernizes the existing Sand Island WWTP to provide secondary wastewater treatment聽compliant聽with a聽2010 U.S. Environmental Protection Agency Consent Decree.
Located on a 24鈥慳cre site between Honolulu鈥檚 downtown business district and the airport, the project involves both new construction and significant rehabilitation of existing facilities. The upgraded plant treats聽wastewater using advanced membrane bioreactor (MBR) technology, significantly improving effluent quality before discharge through the existing ultraviolet disinfection system and ocean outfall.
Key elements of the project include construction of a new Intermediate Pump Station and Blower Building, MBR service and processing facilities, sludge thickening and processing systems, enhanced odor control and new effluent flow routing, including tunnels and channels. The project combines new facilities with extensive renovations to the active treatment plant.
Delivered using a design鈥慴id鈥慴uild approach, the project required complex sequencing and close coordination to聽maintain聽continuous plant operations throughout construction. The work includes extensive cast鈥慽n鈥憄lace concrete, below鈥慻rade construction, dewatering and the installation of mechanical, electrical, instrumentation and process systems critical to wastewater treatment performance.
The Sand Island Wastewater Treatment Plant Secondary Treatment Phase 1 project is the culmination of five years of intricate construction within an active treatment plant, completed three months ahead of schedule. Beyond delivering a major infrastructure upgrade, 番茄社区官网 is proud to be a long-term partner in supporting Hawaii鈥檚 environmental goals, protecting public health and helping modernize critical wastewater systems for future generations.
Learn how 番茄社区官网 delivers complex construction solutions across markets by visiting our聽番茄社区官网 Page.
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