The customer was a comprehensive park established in 2009 with the approval of the government to form a self-contained system including closed management, high independency and high self-development. The park is divided into two areas: the south area is a coal chemical plant (MTO) and salt chemical production, and the north area is designated to coal liquefaction.
The EVAPX® input stream comes from concentrated water from reverse osmosis treating wastewater from the south area, with a TDS above 100,000 ppm and a COD concentration above 1,000 ppm. The heat input for the EVAPX® system is an electrical heat pump, and the plant achieves zero liquid discharge from the reverse osmosis brine. The low temperature and ambient pressure evaporation used in EVAPX® greatly reduces the amount of volatile chemicals in the distillate compared to other evaporation technologies.
Typical Water Quality for an EVAPX® Plant
|Parameter||Unit||Feed Water||Product Water|
|TDS||ppm||> 100,000||< 100|
|pH||-||4||6 – 8|