XUEXi-dong,PANChun-you,FENGTao,et al.Discussion on Double-end Water Production Process of Reverse Osmosis Seawater Desalination System[J].China Water & Wastewater,2023,39(21):111-116.
Discussion on Double-end Water Production Process of Reverse Osmosis Seawater Desalination System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第21期
Page:
111-116
Column:
Date of publication:
2023-11-01
- Keywords:
- reverse osmosis seawater desalination; double-end water production process; chloride ion; total dissolved solids
- Abstract:
- This paper designed a desalination process consisting of primary reverse osmosis double-end water production and partial secondary reverse osmosis, investigated the effects of seawater temperature, secondary influent ratio, membrane type and other factors on effluent quality by using reverse osmosis system simulation software, and analyzed the operational cost according to the special requirements of desalting water quality for industrial usage. Reducing seawater temperature and increasing the secondary influent ratio were conducive to improving the effluent quality, and the effluent quality of the double-end water production process was less affected by two factors than that of the single-end water production process. Compared with the high desalination membrane, the secondary start-up temperature of the high flux membrane decreased, and the secondary influent ratio increased. Under the test conditions, the secondary start-up temperature and secondary influent ratio of the double-end water production process were 13 ℃ and 20%, respectively. Compared with the traditional single-end water production process, the double-end water production process reduced the scale, equipment investment and sodium hydroxide consumption of the secondary reverse osmosis all by 50%, and the power consumption by 0.08 kW·h/m3.
Last Update:
2023-11-01