영국 버진군도의 가장 큰 Tortola섬 지방의 Caribbean 상하수처리 프로젝트에서 1만400㎥/일 규모 해수담수화 플랜트 건설을 위한 자금을 영국계 수출재정보증 기구의 지원을 받는 Barclay사로부터 4천300만 달러 재정지원을 받게 됐다.
SWRO 시스템은 two-pass 시스템으로 45% 회수율을 갖는다. 4기의 fist-pass 트레인과 2기의 second-pass 트레인으로 구성되며 특정 트레인이 유지보수로 운전정지에도 100% 용량으로 운전되도록 설계됐다.
한편 pressure exchanger 형식의 에너지회수장치, 고압용 펌프, 부스터 펌프 및 two-stage의 메디아필터장치, 기리고 5마이크론 기공의 카트리지 필터 등이 설치된다.
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Biwater gets Barclays backing for Caribbean SWRO plant
A Caribbean water and wastewater project, including a 10,400 m³/d seawater desalination plant, has received financial backing worth US$ 43 million from Barclays, backed by a UK Export Finance Guarantee.
Biwater, the UK-based engineering, water and wastewater company, has received the financing for its Water & Wastewater Infrastructure project on Tortola, the largest island in the British Virgin Islands.
The seawater reverse osmosis (SWRO) system will be a two-pass system running at 45% recovery. It incorporates four first-pass trains and two second-pass trains and is designed to run at 100% capacity with one train from each pass down for maintenance. However, normal operation will be to run at 100% capacity using all trains, which is the optimal and most efficient mode.
Biwater is utilising energy recovery involving pressure exchangers, high-pressure pumps and booster pumps for the SWRO trains. Pretreatment consists of two-stage media filtration followed by 5μm cartridge filtration to protect the system from foulants.
Biwater AEWT is the RO plant supplier; equipment is being supplied from California, USA.
Barclays acted as the sole advisor, arranger, lender and facility agent. In addition, the project was fully supported by the UK government export credit agency UKEF and required close collaboration between both UKEF and the British Virgin Islands' Government.
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