采用内电解法对印染废水进行深度处理王宝宗

　　　200927采用内电解法对印染废水进行深度处理王宝宗　景有海　尚文健(,　　361005)　:采用内电解法对经过生化处理后仍不能达标的印染废水进行深度处理实验,结果表明:当pH维持在4左右,反应时间控制在16min左右时,出水投加Ca(OH)2约2g/L混凝沉淀,则废水的色度去除率可达87.5%,COD的去除率也可达到50%～80%,处理后的出水完全达到GB8978-1996《污水综合排放标准》一级标准的要求。:印染废水;内电解;深度处理STUDYONTHEADVANCEDTREATMENTOFDYEWASTEWATERUSINGIRON-CARBONINTERNALELECTROLYSISWangBaozong　JingYouhai　ShangWenjian(EnvironmentalSciencesCenter,XiamenUniversity,Xiamen361005,China)Abstract:Afterbeingtreatedbybiologicalmethod,thedyewastewatercannotmeetthenationalstandard,sointernalelectrolysisisusedasafollow-uptreatmentofbiochemicaltreatment.ItisanalyzedtherelationshipbetweenremovalrateandthosefactorssuchasthepH,timeandcoagulationdosage.WhenpH=4,Ca(OH)2dosageis2g/L,thedecoloringratecanbe87.5%andtheremovalrateofCODis50%～80%.Theeffluentcanmeetthefilst-orderof“WastewaterIntegrateddischargeStand”.Keywords:dyewastewater;internalelectrolysis;advancedtreatment1　,1500t,2002,。:※※※※※※※。,,160～200,COD200～600mg/L,。,,,。,,-N=N-,,[1-2],。2080,。:,,,[H],(-N=N-,-NO2)[2]。Fe2+,,[3]。Fe-C,Fe2+Fe(OH)2,Ca(OH)2,,COD,。,Fe-C,,。2　2.1　实验装置,2000mm,80mm,Fe-C700mm,2.2　实验方法及步骤3min,,。pH3～6,16min191DOI:10.13205/j.hjgc.2009.s1.047　　　200927,Ca(OH)220min,COD。COD,。3　3.1　pH值的确定1):,COD=210mg/L,=160;2)pH3,4,5,6,32min;3)1g/LCa(OH)2,20min。1。1　CODpHpHCOD/(mg·L-1)/%//%3456888292120586156.6436020206062.587.587.562.5　　1,pH=3,COD,,60。:pH,H+,,,,。pH=45,COD。pH=6,COD。:pH=4,pH=4pH。3.2　反应时间的确定COD2。2　COD/minCOD/(mg·L-1)/%//%816326098828282536161616020202062.587.587.587.5　　2,16min,COD,COD,16min。3.3　Ca(OH)2投加量确定1):COD=210mg/L,=160;2)pH=4,16min;3)Ca(OH)20.5,1,2,3,4g/L,20min。3。3　Ca(OH)2CODCa(OH)2/(mg·L-1)COD/(mg·L-1)/%//%0.574706063172713081268732088368732088468732088　　3,Ca(OH)2,COD,2g/L,2g/L,Ca(OH)22g/L。3.4　混凝时间确定1)COD=220mg/L,160;2)pH=4,16min;3)Ca(OH)22g/L。,4。4　COD/minCOD/(mg·L-1)/%//%51085180501088604075207267308130706830816070683081　　4,30mi,COD,30min。Fe3+Fe2+,,Fe2+Fe3+。Fe-C30min2g/LCa(OH)2,COD74mg/L,,60,2,。,,[H],-N=N--NH-NH-,-NO3-NH2。,,,-NH2-NO3。4　,:1)pH=4;2)16min;192　　　2009273)Ca(OH)22g/L,30min。COD5。5　CODCOD/(mg·L-1)COD/(mg·L-1)COD/%///%2007-10-052444681.116030812007-10-0621888601602087.52007-10-072127664.216040752007-10-08236806616030812007-10-1020028868020752007-10-11196328512020832007-10-12220886016030812007-10-1340418454.51606062.52007-10-145041008020040802007-10-15408987616040752007-10-1637610073.416040752007-10-1722882648040502007-10-182169456.516040752007-10-192301105216040752007-10-2022610653.11606062.52007-10-2123810854.61606062.5　　2008109,;1011,2cm,10mL/s7mL/s,,。5,,,COD80mg/L,20～40,。1013,COD404mg/L,COD184mg/L,60,,24min。1014COD504mg/L,200,COD100mg/L,40,。。1019,COD230mg/L,200,COD110mg/L,40,COD,。:1),,Fe-C,。2)20,70mm,,70mm,,,(1∶1)[3],。5　1)COD200～300mg/L,160～200,pH4,16min,2g/LCa(OH)2,30min,COD80mg/L,20～40,;COD300mg/L,24min,2g/LCa(OH)230min,。2),,[H]-N=N-。,,。[1],.[J].1993(3):339-342.[2],,,.E24R[J].2005(4):674-676.[3],,.-[J].,1996,28(3):302-306.　　361005　106#2009-02-19193