5000吨皮革废水处理方案

5000m3/d?CODCrBOD550015000100075001000150?11030%3000mg/lCODmg/l2CODCrBOD5CODCOD18006100mg/l123.198912264.2003.3.205.2002926.GBJ14-87,19977.GB/T50106-20018.GB50015-20039.GB50332-200210GB12348-199011CJ25.1-198912GBJ69-1984131-1114(GB14554-93)15(GB14554-93)16GB8978-9617GB50011-200118GB50010-200219GB50017-200320GB50007-200221GB50009-200122(GB50108-2001)23(GB50019-2003)24(GB14554-93)25GB5004-9526(1993)27()(2001.6.1)28.10KV(GB50053-94)29.()(GBJ65-83)30.3110KV(GB50060-92)31(GB50052-95)32(GB50217-94)33(2000)(GB50057-94)34()(1993530)35(2002)(200210)3612+CAST+345000m3/d121270%3123CASTA/O4CASTA/0123A/O(1)5000m3/d.(2)500m3/d.(3)500m3/d(4)CODcr6000mg/LBOD52200mg/LSS4000mg/LNH3-N(N)300mg/LPH78Cr3+1000mg/LPH4S2-4000mg/LCOD13000mg/LSS6000mg/LGB8978-96CODcr100mg/LBOD530mg/LSS70mg/L1.0mg/LNH3-N15mg/L505000m3/d250m3/h1CrpH8.5Ksp=6.310-31OHCrOHCr333142101KsOHHOH14_OHHpH[OH-]=148.5=5.5[Cr3+][OH-]3=Ksp=6.310-3113363133131099.11016.3103.6103.6OHCrmol/l1.9910-1351.9961=1.03410-11g/l=1.03410-8mg/lPH8.5PH2Cr3+500m3/d500m3/dPH4Cr3+1000mg/L3NaOH65PH8.52h4CrOH32000kg300t30012422422SOSOSMnSO2S=2700mg/lPH13SS6000mg/lCODCr130003500m3/d500m3/d4S2-SO42S1Kg0.6KgMnSO428g100mg/lPH1058hS=80PHCASTCASTA/O+AOA1525g/L1BOD/COD234512mg/l2BOD5BOD5NP=10051203PHPH69PHPH420303510675Cr3+H2SPHCr3+H2SCAST1abc.S0/X0()CAST(N3-N=20mg/L)20%202.5mg/L(DO))(OPR)(OPR)CAST02.5mg/L--0.5h1.0h3CAST75%COD100mg/L4A/OA/OA/OA/OA/O