国家“九五”攻关项目(1996-916-01-03)。国家海洋局天津海水淡化与综合利用研究所(天津,300192) 王静 张雨山 徐梅生 [],NH3—N,,、pHNH3—N。,12%,NH3—N;24%,NH3—N;36%,NH3—N。,NH3—N,,。,pH8.0~8.5。 [];;;; []X703;TQ085+.47 []A []1005-829X(2000)04-0018-02EffectsofvaryingsalinityontheremovalefficiencyofNH3—Ninthecomplete-mixingactivatedsludgeprocessWANGJing,ZHANGYu-shan,XUMei-sheng(InstituteofSeawaterDesalinationandMulti-purposeutilization,SOA.,Tianjin300192,China)Abstract:Theeffectsofsalinityvariations,temperatureandpHvalueontheremovalefficiencyofNH3—Nhavebeeninvestigatedinthecomplete-mixingactivatedsludgesystemafterthedomesticseawaterflowedintotheur-bansewagesystem.WiththesalinityincreasingtheremovalefficiencyofNH3—Ndrops.WiththetemperatureincreasingtheremovalefficiencyofNH3—Nisimproved.ThesuitablepHvalueofnitrificationis8.0~8.5whentheseawatersalinityishighinthewastewater.Keywords:domesticseawater;complete-mixingactivatedsludgeprocess;seawatersalinity;nitrification;re-movalofNH3—N ,,。,,。,,,〔1,2〕。,NH3—N。1 1.1 实验装置与实验条件 〔1〕。0、12%、24%、36%;COD180mg/L;。,2。1.2 分析方法 〔3〕,721。2 ,,,,。,。:—18—2000年4月第20卷第4期 IndustrialWaterTreatment Apr.,2000Vol.20No.4 2NH4++3O22NO2-+4H++2H2O+84kcal 2NO2-+O22NO3-+18kcal 2NH4++4O22NO3-+2H2O+4H++102kcal 、,,,,。 ,2mg/L,,,,。3 3.1 海水盐度对硝化过程的影响 20℃,NH3—N1。图1 不同盐度下NH3—N去除率 1,012%,NH3—N;24%,NH3—N;28%,NH3—N80%。,。,,,、。3.2 温度对硝化过程的影响 pH8.0,0、12%、24%36%,,NH3—N。NH3—N1。 1,,NH3—N。,,,,NH3—N。,,NH3—N,。表1 不同温度下NH3—N去除率/℃NH3—N/%12%24%36%1063.460.157.651.71585.778.373.062.52094.293.883.775.12596.395.492.284.93098.097.296.792.63.3 pH值对硝化过程的影响 20℃,0、12%、24%36%,pH,pHNH3—N。pHNH3—N2。表2 不同pH值下NH3—N去除率pHNH3—N/%12%24%36%7.070.460.152.648.77.587.783.377.066.58.094.293.883.775.18.594.393.485.279.99.092.291.284.775.6 2,0~12%,pH7.5~9.0。24%~36%,pH8.0~8.5。4 ,NH3—N,,,、。[][1],.[J].,1999,19(5):17~18.[2],.[J].,1999,15(9):4~6.[3]《》.(3)[M].:,1994.[],1964,,。收稿日期:1999-12-07—19—2000—04,20(4) 海水盐度对完全混合活性污泥法氨氮去除率的影响研究