Oasys Water사는 미국에 기반을 둔 삼투전문회사로 베이징 남서부 200㎞ 지점에 위치한 Taiyuan Qing Xu 경제기술개발구역의 플랜트에 액체의 방전 제로(0)화(a zero liquid discharge, ZLD)를 위해 화학물질의 석탄을 응용한 멤브레인 기술을 집중적으로 제공하고 있다.

Oasys의 지역 파트너인 Beijing Woteer사는 약 8년 동안 Yangmei Taihua의 화학 프로젝트의 석탄에 대한 양도계약 등의 내용을 포함한 통합 ZLD 시스템을 제공할 예정이며, Oasys의 정삼투 방식인 MBC 프로세스를 통해 하루용량 약 1천200만㎥의 플랜트를 구성해 폐수 처리 용수의 일부를 취급할 방침이다.

 

 

 

US-based forward osmosis specialist, Oasys Water, is to supply its membrane brine concentrator (MBC) technology for a zero liquid discharge (ZLD) application in a chemicals-from-coal plant in the Taiyuan Qing Xu Economic and Technology Development Zone 200km southwest of Beijing.

 

Oasys' local partner, Beijing Woteer, will deliver the integrated ZLD system under an eight- year built, own transfer contract for the Yangmei Taihua coal to chemicals project,

Oasys' proprietary forward osmosis MBC process will be part of a wastewater treatment train treating streams from a boiler makeup water plant with total feed volumes expected at 1,200 m³/day.

 

Oasys' chief executive officer, Jim Matheson, said: "China's industrial ZLD market continues to expand rapidly and we are planning additional project announcements in the near future."

 

Matheson said stiffer discharge standards implemented this year in China along with new regulations promoting outsourcing of industrial effluent treatment is fuelling growing interest in the build own transfer contract model for customers as well as the leading Chinese engineering procurement and construction companies such as Woteer. "We believe it will become increasingly common," Matheson predicted.

 

The treatment system of microfiltration, ion exchange polishing and reverse osmosis will produce reject water with a total dissolved solids (TDS) concentration of 75,000 mg/l. The MBC, operating at a targeted recovery of 70%, will further concentrate the stream to 240,000 mg/l to feed a crystallizer and complete the ZLD process.

 

Oasys and Woteer installed recently as similar set up at Huaneng's Changxing power station to treat flue gas desulphurization effluent and cooling tower blowdown from the new 1.3 GW coal-fired plant.

 

[출처 = Desalination & Water Reuse / 2015년 6월 6일]