A2/O(盐城市自来水公司,江苏盐城 224001) :A2/O,。,,。:A2/O;;:X52 :B :1004-695X(2003)02-0065-03MeasureAboutApplicationProcessofA2/OtoImproveEffectofTreatmentWastewaterP/NRemovalLIUBao-ling(YanchenWaterSupplyCorporation,Yanchen,Jiangsu224001,China)Abstract:ItisreviewedtheeffectofapplicationprocessofA2/OP/Nremoval.Afterpracticalcomparisonandtheoriticalanalysis,itisputforwardasetofmeasurestoimproveP/Nremovaleffect.Keywords:ProcessofA2/O;P/Nremoval;Measures A2/O。、、,,。,,,A2/O。1 A2/O[1,2]1.1 污水中可降解有机物对除磷脱氮的影响,A2/O。,,,,,。PHB,,,PHB,,,。0.6,0.1kgρ(BOD5)/(kgMLSS·d)。,,,,,。,ρ(C/N),,,0.5~1.0h,。ρ(C/N),。ρ(COD/TKN)8,80%。:2003-01-03;:2003-03-18(1964—),,,,,,,2。 ,,,,,NH+4-N,。,,,,。,0.8kgρ(BOD5)/(kgMLSS·d)。,6516 220036;;。1.2 污泥龄ts的影响A2/O。,,,,,20~30d。,A2/O,ts,,。,。,A2/O15~20d。1.3 溶解氧(DO)的影响,DO,,DO2mg/L,,DO。,DO,NO-x-N,。,DO,DO0.5~0.7mg/L,,。DO2.0mg/L。,DO,DO,,。,DO0.5mg/L。,,,,DO0.2mg/L。1.4 混合液回流比RN的影响(内回流),。RN。RN,,RN,,。A2/OηRNη=RN/(1+RN)(%)。1.5 污泥回流比R(外回流),,。R,,R,A2/O,,NO-x-N,,,,,,,,。,A2/O,,,,,。R60%~100%,40%。1.6 水力停留时间tHRT的影响,A2/OtHRT6~8h,tHRTtHRT(::)=1∶1∶(3~4)。1.7 温度的影响,5~35℃,,30~35℃。5℃,。5~27℃,,15~25℃。,,5~30℃。1.8 pH的影响,pH6~8;,pH6.5~7.5;,pH7.5~8.5。2 A2/O(1),60%~100%,10%~20%,。,,。(2)。,。,1/3。(3),。(4)3~5W/m3。,6616 2.A2/O20034,;。(5)A2/O,15~20d。(6)A2/O,300%~400%,70%,。(7)A2/O,:0.10kgρ(BOD5)/(kgMLSS·d);BOD50.06;ρ(C/N)6;0.1kgρ(BOD5)/(kgMLSS·d);ρ(TKN/MLSS)0.15kgρ(TNK5)/(kgMLSS·d)。(8)A2/O6~8h,tHRT(::)=1∶1∶(3~4)。3 2.5t/d,A2/O,。,、1。1 /(mg·L-1)/(mg·L-1)/%BOD5180≤1890COD220≤5077SS240≤2091TN30≤873TP5≤1.078pH6.5~9.07~8.5BOD5、SS90%,N、P70%,。[][1] .“N”“N”[J].,1983(4):7[2] .[M].:,1996(上接第58页),,。4 COD(1000~1300mgL),COD(1800mgL),,COD。,,,,COD,;,COD、,,,、,,,,,、,。,,SO2CO2。,COD,、、。5 ,,5%~15%(),5%~15%,(),10%~40%,20%~50%[5]。,,,,,。,。,,,,,,。[][1] ,.[J].,1997(12):57-60[2] .ISO14001[J].,2002(6):45-46[3] , .[M].:,1982[4] .[Z].[2000]137[5] .[J].,2000(6):5-76716 2.A2/O20034