CAJ | 학술논문

分别用葡萄糖、甲醇和邻苯二甲酸氢钾3种有机物作为电子供体，进行反硝化实验。分别在C/N比为4和10的条件下，比较它们对反硝化速率的影响。研究结果表明：在C/N比为4时，初始浓度为60 mg/L的反硝化速率在葡萄糖为碳源时为最大，其次是甲醇，而邻苯二甲酸氢钾速率最慢。而当C/N比为10时，所有有机物作为电子供体时反硝化速率则基本相同。随着浓度的升高，同样在C/N比为4或者10时，以葡萄糖和甲醇作为电子供体时，反硝化速率随着初始NO3--N浓度的增加而增加，表现为Monod模型。而以邻苯二甲酸氢钾为碳源时，反硝化速率则首先随着初始NO3--N浓度增加而增加，随后则逐步下降，表现为Aiba抑制型。在所有情况下，以葡萄糖为电子供体时，最大的NO3--N去除速率均为最大，且饱和常数KS最小。
분별용포도당、갑순화린분이갑산경갑3충유궤물작위전자공체，진행반초화실험。분별재C/N비위4화10적조건하，비교타문대반초화속솔적영향。연구결과표명：재C/N비위4시，초시농도위60 mg/L적반초화속솔재포도당위탄원시위최대，기차시갑순，이린분이갑산경갑속솔최만。이당C/N비위10시，소유유궤물작위전자공체시반초화속솔칙기본상동。수착농도적승고，동양재C/N비위4혹자10시，이포도당화갑순작위전자공체시，반초화속솔수착초시NO3--N농도적증가이증가，표현위Monod모형。이이린분이갑산경갑위탄원시，반초화속솔칙수선수착초시NO3--N농도증가이증가，수후칙축보하강，표현위Aiba억제형。재소유정황하，이포도당위전자공체시，최대적NO3--N거제속솔균위최대，차포화상수KS최소。
Glucose,methanol and potassium biphthalate were respectively used as electrons for denitrification,which was carried out at C/N ratio of 4 and 10,to compare their impact on nitrate removal rate. Experimental results demonstrated that glucose was superior to methanol and potassium biphthalate for accelerating nitrate removal at C/N ratio of 4 and initial nitrate nitrogen of 60 mg/L,in which methanol was superior to potassium biphthalate. But when C/N ratio was 10,these organic compounds gave similar effect. For nitrate removal kinetics,nitrate removal rate increased with increasing of initial nitrate nitrogen concentration corresponding to glucose and potassium biphthalate as electron donors at both C/N of 4 and 10,which could be described with Monod model. While potassium biphthalate as electron,nitrate nitrogen removal increased with increasing of initial nitrate nitrogen concentration at first, and then decreased, which showed Aiba inhibition model. For all situations, glucose gave the maximum nitrate-removal rate ( rmax ) and minimum half-maximum-rate concentration ( KS ) .