미국 캘리포니아의 기존 Chino Basin 담수화 플랜트에 농축수 물량을 절감시키는 설비 및 3기의 새로운 RO 담수화설비가 Biwater사에 의해 추진된다.
Biwater사는 새로운 RO 시스템 신설 및 기존의 담수화 설비의 개량및 확장사업에 대한 설계, 건설 공급 및 시운전등을 담당하며 이 프로젝트에는 기존 1차 RO에서 발생되는 농축수 brine의 처리에 2차 RO설비의 신설을 통하여 기존설비에서 발생되는 농축배출수의 물량을 줄이는 작업을 실행하게 된다.
이번 2차 RO 설비의 전처리로는 Pellet Softening, Solids Contact Clarification, Graular Media Filtration, Bag Filtration 및 Threshold Inhibior/Acid Addition 등이 추가 설치된다.
이러한 설비로 기존발생의 농축수 배출량을 줄이게 되며 결과적으로 동일한 시스템 설비로 음용수 생산량을 추가적으로 생산할수 있게 된다.
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Biwater lands Chino desalination concentrate reduction
A concentrate-reduction facility is to be built for the Chino Basin Desalter Authority in California by Biwater AEWT, involving installation of three new reverse-osmosis (RO) desalination units.
Working with WM Lyles Co, the main contractor, Biwater will design, supply and supervise the new RO units, which involves the modification and expansion of the existing Chino II Desalter facilities. The project will add 14,000 m³/d of water treatment capacity to the Authority's existing facilities, serving surrounding urban areas.
The project will treat concentrated brine from the existing primary RO system, with a new secondary RO system to be provided by Biwater. Pretreatment ahead of the secondary RO trains will consist of pellet softening, solids contact clarification, granular media filtration, bag filtration and threshold inhibitor/acid addition.
As a result, unwanted molecules and ions will be removed from the solution, reducing the concentrate discharge from the existing facility and producing additional potable water that meets rigid quality standards set by the authority.
"With our facility in San Dimas, California, we are just a short journey away from the project site," said Richard White, senior vice president, Biwater AEWT. "It is rewarding to both see and experience the results of Biwater's work in the local community with this project taking place over the next two years."
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