INFLUENCE OF PRETREATMENT COAGULANT ON HIGH SALT MINE WATER MEMBRANE CONCENTRATION
WU Xue-qian
QIN Sheng
TIAN Li-ya
MAO Wei-dong
GUO Zhong-quan
ZHOU Jin-ping
Abstract：The membrane separation performance experiment of high salinity wastewater was studied using simulating coagulation pretreatmented high salt mine water and multi-stage reverse osmosis concentrated water. The effect of excessive PAC and PAM on membrane flux and desalination rateafter mine water pretreatment was studied by single factor experiment.The results showed that 30 mg/L PAC and 0.3 mg/L PAM in influent had no significant effect on first-stage membrane concentration; the membrane flux of 150 mg/L PAC and 1.5 mg/L PAM decreased to 70 ％ and 46 ％ of the new membrane flux respectively after 18 h of second-stage membrane concentration; the membrane flux of 750 mg/L PAC and 7.5 mg/L PAM decreased to 61 ％ and 35 ％ of the new membrane flux respectively after 18 h ofthirdstage membrane concentration. PAC and PAM membrane fouling in tertiary membrane concentration could recover 92 ％ and 77 ％ of membrane flux after NaOH cleaning.With the increase of filtration time, the desalination rate showed an upward trend, and the effect of PAM on the desalination rate was greater than that of PAC.
Keywords：High salinity mine waterReverse osmosisMultistage membrane enrichmentPACPAM
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 40-43 )