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doi10．3969/j．issn．1009－3230．2017．04．010CODcr100041CODcrNaClO、CODcr。21℃pH8．2111mg/L30minCODcr40%。CODcr《DB11－307－2013》。CODcrX703.11009－3230201704－0036－05StudyofＲemovingtheCODcroftheSewageofPowerPlantbySodiumHypochloriteOxidationZHANGXiao－dongBeijingEnergyInvestmentHoldingCo．Ltd．Beijing100041ChinaAbstractInordertosolvetheproblemsofthepowerplantsewage’sexcessiveamountsofCODcracertainpowerplant’scirculatingwatersewagecanbetreatedbysodiumhypochloriteoxidationmethodthroughobservingtheinfluenceofTheamountofNaClOused、thereactiontimeontheCODcrremovalrate．Onthepremiseofthesewagetemperatureof21℃、thewastewaterpH8．21inthespringexperimentaldatashowsthatCODcrremovalratecanreach40%whenavailablechlorinedosingquanlityreaches11mg/Landthereactiontimereaches30min．ThevalueofeffluentCODcrcanreachdischargestandards《DB11－307－2013》．KeywordsSewageSodiumhypochloriteCODcr02017－03－052017－03－291993－。0．1COD《DB11－307－2013》。NaClONaClOCODcr。0．2。、。。。0．2．16320174232、、。。1。。2。3。。0．2．2。1。99%。15－3－－135－99%。2、N503－3N503－2。0．2．3－OH。－OH。。1SCWO。＞647．5K＞732017423222．05MPa。。873．2K35MPa170s99．8%。21972fujishimahondaTiO2H2O。。TiO2、、、。TiO2OHTiO2。TiO2TiO23BTiO2·SiO2/beads1。11．1。1．21．2．1CBF58%CODcr∶TN=4∶1CBF6465m3/h40mg/l3．2tTN。1．2．2CBF30%12465m3/hTP1．4mg/l246kg。1．31．3．1《DB11－307－2013》pHCODcr。CODcrCOD-cr≤20mg/l。1．3．211pHGB11901－19892GB11007－20083HJ636－20124GB11893－19895GB11899－19896GB11901－19897HJ637－20128CODcrGB11914－19899HJT51－1999832017423222．113pH8．3－8．58．58．38．4mmol/l≤2017．7617．7617．76mmol/l≤0．50．20．050．125mmol/l2．5－5766．5mg/l440352396TPPmg/l0．390．390．39mg/l0．1－0．50．210．210．21mg/l5－155．885．055．465NTU≤202．432．432．431/2mmol/l≤10109．439．715ug/l≤1000108108108mg/l1．181．181．18TNNmg/l31．431．431．4CODcrmg/l373737ms/cm3．13．13．133pH6～98．58．38．4ms/cm3．133．133．13℃232122TNNmg/l≤103．393．393．39TPPmg/l≤0．20．240．240．24CODcrmg/l≤20212121SS≤53．33．13．2mg/l≤12．922．922．922．2CODcrCODcr《GB11914－1989》Cl－150℃2h。2．3AＲNAOHAＲK2Cr2O7AＲAg2SO4AＲFeNH42SO42AＲHgSO4AＲ10%2．4pHpHCODcrCODcr。2．4．1HClOHClOOCl－OCl－H+。NaClO1、2NaClO+H2O→HOCl+NaOH1HOCl→H++ClO－2HOClO。NaClO。、、COD2。2．53．5．1CODcrCODcr21mg/lpH8．2121℃30minNaClOCODcr4。4CODcrmg/lCODcrmg/lCODcr%02105．51814．29111242．8616．51147．6293201742321CODcr1CODcr11mg/lCODcrCOD-cr11mg/lCODcr=11∶21CODcr。2．5．2CODcr5CODcrminCODcrmg/lCODcr%0210301242．86601052．3890957．14CODcr21mg/lpH8．2121℃11mg/lCODcr3－4。2CODcr3－230minCODcrCODcr30min。30minCODcr。31CODcr。2pHCODcr=11∶2130minCODcr。1．D．20012－4．2．J．2001343．90－92．0420174232