| The water qualities of desulphurization wastewater from electric power plant of Ding zhou pertaining Guohua were analyzed, and a lab-scale study was conducted to coagulate by PAFS and PAM for the treatment of the wastewaters. Integrated the probable different desulphurization wastewater, craft flow path was designed and structures of the unit of 300 MW to produce the desulphurization wastewater of 4.0 t/h, however, it carries out the problem of economic budget and possible existence analyses.Through the experimental research, it showed when pH of 3.0 and the mole ratio of ferric sulfate and aluminum sulfate was 2∶3, the liquid PAFS was synthesized, which was accessed with PAM to wipe off fluoride and sulfide that were beyond the criterion the most serious. At the same time, best pH, stir time, put time and coagulant quietly best use quantity were determined to exclude F- and S2-.And with the coagulant that power plant now uses coagulating agent, it showed that it was much better to use PAFS.
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