硫酸法生产钛白的废酸治理

36121.2.42100817%～22%4%～10%2%11t3.5t15%～20%F60%1200℃[1]20%40%50%70%90%140%2211.10～1.221.01～1.06H2SO4/%17～201.4～2.5FeSO4/%5～80.2～0.8Ti(SO4)2/%1～20～0.5(Al2(SO4)3)/%1.5～2.50.1～0.22/t/d3020201850930195922.1CaCO3MgCO3+2H2SO45CaSO4A+MgSO4+2H2O+CO2BH2SO42%20～40m/hCaSO4CO2CO2pH4～5pH7.5pH7.50.005mg/L0.0005mg/L0.0005mg/L6CDDDDDDDCDDCDDDDDDDCDD2002-07-0237372003101ChemicalProductionandTechnology0.01mg/L0.01mg/L0.05mg/L0.1mg/L1mg/L5mg/L1.9mg/LKMnO42.2CaO+H2O=CaOH2CaOH2+H2SO4=CaSO4+2H2O1pH4CaOH2pH7CODpH6～9COD100×10-670mg/L[2]315%～20%1..2..,1999.195291～293[]1966,()5000400kt50kt30%()(4～5min)150kt6kt4kt3kt()EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!