CAJ | 학술논문

在连续的操作环境下,通过改变在膜生物反应器(MBR)巾的C／N和曝气量,研究碱度对同步硝化反硝化脱氮效果的指示作用.结果发现,在反硝化完伞的情况下,出水碱度(330～440 mg／L)在硝化过程中较高并与出水TN表现出好的线性关系(Alk=3.22[N]+333.08,R~2=0.85);在硝化完全的情况下,出水碱度(60～280 mg／L)在反硝化过程中较低并与出水TN也有很好的线性关系(Alk=-4.93[N]+317.86,R~2=0.89).实际消耗的碱度可以作为另一个指示因子 (△Alk_(exper)),实际消耗的碱度随出水的NH_4~+浓度升高而降低(△Alk_(exper)=-3.85[N]+149.11,R~2=0.88,出水NO_3~- -N< 4.5 mg／L);实际消耗的碱度随山水的NO_3~- -N浓度升高而升高(△Alk_exper=3.68[N]+161.11,R~2=0.88,出水NH_4~+ -N< 5.5 mg／L).虽然pH的变化有一定的规律,但是对SND脱氮效果指示不灵敏.
재련속적조작배경하,통과개변재막생물반응기(MBR)건적C／N화폭기량,연구감도대동보초화반초화탈 담효과적지시작용.결과발현,재반초화완산적정황하,출수감도(330～440 mg／L)재초화과정중교고병여출수TN표현출 호적선성관계(Alk=3.22[N]+333.08,R~2=0.85);재초화완전적정황하,출수감도(60～280 mg／L)재반초화과정중교 저병여출수TN야유흔호적선성관계(Alk=-4.93[N]+317.86,R~2=0.89).실제소모적감도가이작위령일개지시인자 (△Alk_(exper)),실제소모적감도수출수적NH_4~+농도승고이강저(△Alk_(exper)=-3.85[N]+149.11,R~2=0.88,출수NO_3~- -N< 4.5 mg／L);실제소모적감도수산수적NO_3~- -N농도승고이승고(△Alk_exper=3.68[N]+161.11,R~2=0.88,출수NH_4~+ -N< 5.5 mg／L).수연pH적변화유일정적규률,단시대SND탈담효과지시불령민.
The study aimed at investigating alkalinity as a reliable indicator for the effect of SN D under a series of operational conditions by MBR. Under sufficient denitrification.effluent alkalinity exhibited a linear correlation with TN concentration(Alk=3.22[N]+333.08,R~2=0.85),with effluent alkalinity of 330～ 440 mg／L.While under sufficient nitrification,effluent alkalinity exhibited a linear reverse correlation with TN concentration(Alk=-4.93[N]+317.86,R~2=0.89),with effluent alkalinity of 60～280 mg／L.Furthermore, experimental alkalinity difference between influent and effluent(△Alk_(exper))was studied as another indicator. △Alk_(exper) decreased with the increasing effluent NH_4~+ -N concentration(△Alk_(exper)=-3.85[N]+149.11,R~2= 0.88,effluent NO_3~- -N<4.5 mg／L)and increased with the increasing effluent NO;-N concentration(△Alk_(exper) =3.68[N]+161.11,R~2=0.88,effluent NH_4~+ -N<5.5 mg／L).pH was not well related with nitrogen removal.