含氟废水处理

1CaF21816.3mg/L7.9mgL1020mg/L2030mgL6CaF2Ca(OH)2pH1215mg/L7pH7810mgL()()pH840mgL100mgLpH68pH7pH9pH1120minpH7.5820min30minpH9.811.80.5hpH6.37.345h45h5mg/L(1520)21pH7815min4mg/L(0.81)(22.5)1121/10Ca5(PO4)3F102Al3+F-Al(OH)3(am)pH6.47.22314m31501000gpH5875%FAl0.715SO42-Cl-(1)ACPACpHSO42-Cl-Al(OH)3(am)Al(OH)3(am)16ACPACXPSAl(OH)3(am)NaFHF(2)Al13O4(OH)147+Al(OH)3(am)OH-F-OH-pH(3)F-Al3+AlF2+AlF2+AlF3AlF63-6F-110-4110-2mol/LpH56AlF2+AlF3AlF4-AlF52-(AlFx(OH)(3-x)Na(x-3)AlFx)Al(OH)3(am)IRXPSAlFx(3-x)+310mg/L1mg/L1110mg/L1(mg/g)pH200.060.37.37.921220.82.04.562361467240.010.03352523.56726303.57(1)10.062mg/g3.5mg/g614mg/g30mg/g40100mg/L24(2)5mg/Lkg101000L0.5h(400600)rAl2O3Al2(SO4)3H2O+6F-Al2O32AlF3H2O+3SO42-pHpH56.5250.30.6mmX()4(1)10003000mg/L2030mgLpH(2)(3)(4)2030mgL10mg/L(5)(6)