에보쿠아(Evoqua)가 싱가포르에서 개발한 기술이 전통적인 해수 역삼투 방식에서 요구하는 절반 수준의 전력만을 사용하는 것으로 알려졌다. 이 기술은 파스 리스(Pasir Ris)에 위치한 싱가포르 PUB의 가변성 염분(Variable Salinity) 플랜트에서 지난 2010년 시작된 3년 기간의 파일럿 프로젝트를 통해 개발됐다.

싱가포르 언론에 따르면 PUB는 에보쿠아의 기술을 하루 4Ml 생산 용량으로 투아스(Tuas) 정수 플랜트에서 오는 2016년에 출시할 계획이다.

 

 

 

Technology developed in Singapore by US firm, Evoqua, uses half the amount of electricity required by conventional seawater reverse osmosis the firm has claimed.

 

The technology emerged from a three-year pilot project started in 2010 at the PUB Variable Salinity Plant in Pasir Ris. PUB has told the Singapore press that it will roll out the Evoqua technology at its Tuas Water Reclamation Plant next year, with the capability to produce up to 4Ml/d.

 

The power requirement using Evoqua technology is about 1.65kWh/m³ to 1.8kWh/m³. PUB hopes to further reduce the amount of energy needed for the process to just 1.5kWh/m³ of desalinated water. With conventional reverse osmosis method, 3.5kWh /m³ of electricity is typically needed.

 

The Evoqua technology removes salt ions by electrochemical desalination whereby they are attracted to electrodes of the opposite charge. This energy-efficient method makes desalination a more viable and sustainable alternative said PUB.

 

Singapore currently consumes 1,600 Ml/d of water a day. The demand could almost double by 2060. Up to 25%r of the current demand is met by desalinated seawater. PUB hopes desalination can continue to supply the same proportion even in the long term when demand goes up.

 

[출처 = Desalination & Water Reuse / 2105년 11월 30일]