200927pH郝玉芳(, 550002) :以实际含氮有机废水的处理为研究对象,生化采用厌氧和好氧联合处理工艺,以控制好氧池中pH值的适当范围来研究系统的脱氮效果。通过小试和实际工程中对好氧池中pH范围的控制,废水脱氮效果明显。多项工程实践验证了生化处理时,通过调节pH到最佳范围来控制脱氮,从而高效处理含氮有机废水是切实可行的。该技术操作简便、投入少、运行效果稳定,具有推广价值。:含氮有机废水;pH;脱氮CONTROLDENITRIFICATIONBYPHINTREATMENTOFWASTEWATERHaoYufang(GuiyangEnvironmentalMonitoringStationofChengduRailwayBureau,Guiyang550002,China)Abstract:Dentrificationisaneffectivetechnologytocontrolnitrogenpollutionfromwastewater.TheeffectofpHondenitrificationwasanalyzed.ItwasshownthatpHexertedalargeinfluenceonthegrowthandmetabo-lismofnitrifyingbacteria.Toagreatdegree,pHrestrictedtheperformanceofnitrificationreactor.There-fore,itishighlyfeasibletocontroldenitrificationbypHinapracticalwastewatertreatmentproject.Keywords:nitrogenwastewater;pH;denitrification0 ,,、。、。《2006》[1],。、。,、。,、,93,13%。COD1[2]。 ,2001-20066,1 COD/tCOD/t/t2001433.0202.7230.31404.8607.5797.3125.241.383.92002439.5207.2232.31366.9584.0782.9128.842.186.72003460.0212.4247.61333.6511.9821.7129.740.489.32004482.4221.1261.31339.2509.7829.513342.290.82005524.5243.1281.41414.2554.8859.4149.852.597.32006536.8240.2296.61428.2541.5886.7141.342.598.8,,。1 、、。、、[3]。。,,。222DOI:10.13205/j.hjgc.2009.s1.056 200927:、、pH、。,。,,pH,(),(),N2N2O。[3],,,。(1)、(2)。2NH3+3O2※2H++2NO-2+2H2O(1)2NO-2+O2※2NO-3(2),,、。(3)。,,,。 ,,,pH,,。2 2.1 工程概况:。200t/d,220t/d。GB13457-92《》[4]。,,2。pH、COD、BOD5、SS。2 mg/L(pH)pHρ(COD)ρ(BOD5)ρ(SS)ρ()6.0~9.5800~5000400~2500300~800100~2506.0~8.580306015 :。500t/d,500t/d。《(GB4287-92)》[5]。,3。pH、、COD、BOD5、SS。3 pH/ρ(COD)/(mg·L-1)ρ(BOD5)/(mg·L-1)ρ(SS)/(mg·L-1)ρ()/(mg·L-1)5.5~8.51600-6400800~1800300~600250~50040~656.0~9.050100257015 :。100t/d,160t/d。GB8978-1996《》[6]。,,4。pH、COD、SS、。4 mg/L(pH)pHρ(COD)ρ(SS)ρ()ρ()5.5~8.5320~512313~80040~17690~2406.0~9.01007010152.2 废水处理工艺流程2.2.1 。。1。1):,。2):,。3):,。223 2009271 4):,。5):;,pH,。6):,。2.2.2 ,2。2 1):,。2):,。3):,,。4):。2.2.3 ,3。3 1):,,,、,。2):,,,。3):,。4):,,,pH,。3 pH,,,pH=9.5,;pH=6.0,。,pH9,()pH,。3.1 屠宰废水pH值的最佳控制范围,pH。pH6,,COD。,,(),pH。,:pH7.7~8.2,、,。4。4 mg/L(pH)pHρ(COD)ρ(SS)ρ()ρ(BOD5)636.3~46.749~6132~5880-1506.5~7.614.3~18.146~5214~3522-787.7~8.242~6835~623~512~286.0~9.01007015203.2 真丝印花厂pH值的最佳控制范围,,pH。pH6,,COD。,pH。224 200927,:pH7.9~8.5,,。5。5 pH/ρ(COD)/(mg·L-1)ρ(BOD5)/(mg·L-1)ρ(SS)/(mg·L-1)ρ()/(mg·L-1)6.0100-200130~18350~8263~12831~626.5~7.750-10084~12025~4638~7217~257.8~8.55050~7510~2030~504~116.0~9.0501002070153.3 洗车废水pH值的最佳控制范围,pH。pH6,,COD。,,(),pH。,:pH7.2~8.2,、,。6。6 mg/L(pH)pHρ(COD)ρ(SS)ρ()6200~30070~12080~1607.2~9.46.5~7.275~15536~10610~354.1~5.97.2~8.242~6835~622~82.3~3.46.0~9.01007015104 1):,,。,,pH7.7~8.2,,。,pH7.9~8.5,,。,pH7.2~8.2,,。2):pH,。,,30h。3):25℃,30℃,5℃40℃,。4):。、、,pH,。,。[1].2006[N].2007.6.4.[2].2001-2006[N].2002-2007.[3].[M].:,1997.[4]GB13457-92.[S].[5]GB4287-92.[S].[6]GB8978-1996.[S]. 550002 88(0851)81813272008-11-15225