CAJ | 학술논문

以反硝化除磷过程中N2 O的减量化为目的，分别以乙酸、乙酸和丙酸的混合物、丙酸为碳源，研究了碳源类型对系统中N2 O产生的影响。结果表明：以乙酸为碳源时反硝化除磷过程中N2 O的产生量最多，以乙酸和丙酸混合物为碳源时N2 O产量次之，以丙酸为碳源时N2 O产量最少。使用乙酸、乙酸与丙酸混合物和丙酸为碳源时， N2 O产生量占总氮（TN）去除的比例分别为8.67％、1.48％和0.72％。不同碳源导致了系统反硝化进程的不同：以丙酸为碳源时，硝酸盐与亚硝酸盐还原速率比值最低，系统中几乎没有亚硝酸盐的积累；同时，在混合酸和丙酸系统中，聚3-羟基戊酸盐（poly-hydroxyvalerate，PHV）成为聚羟基烷酸酯（poly-β-hydroxyalkanoates，PHA）的主要成分，PHV量的增加导致N2 O产量减少。因此，以丙酸作为反硝化除磷系统的外加碳源对N2 O的减量化有明显优势，但该过程中系统对氮和磷的去除效果还需要进一步优化。
이반초화제린과정중N2 O적감양화위목적，분별이을산、을산화병산적혼합물、병산위탄원，연구료탄원류형대계통중N2 O산생적영향。결과표명：이을산위탄원시반초화제린과정중N2 O적산생량최다，이을산화병산혼합물위탄원시N2 O산량차지，이병산위탄원시N2 O산량최소。사용을산、을산여병산혼합물화병산위탄원시， N2 O산생량점총담（TN）거제적비례분별위8.67％、1.48％화0.72％。불동탄원도치료계통반초화진정적불동：이병산위탄원시，초산염여아초산염환원속솔비치최저，계통중궤호몰유아초산염적적루；동시，재혼합산화병산계통중，취3-간기무산염（poly-hydroxyvalerate，PHV）성위취간기완산지（poly-β-hydroxyalkanoates，PHA）적주요성분，PHV량적증가도치N2 O산량감소。인차，이병산작위반초화제린계통적외가탄원대N2 O적감양화유명현우세，단해과정중계통대담화린적거제효과환수요진일보우화。
In order to reduce the N2 O production in denitrifying phosphorus removal process,the acetate,the mixture of acetate and propionate,and the propionate were used as carbon sources to study their effects on N2 O production in reac-tion systems.The results showed that in denitrifying phosphorus removal process,the production of N2 O was the most with acetate as carbon source,the second with the mixture of acetate and propionate as carbon source,and the lest with the propionate as carbon source.When use the acetate,the mixture of acetate and propionate,and the propionate as car-bon sources,the ratio of N2 O production to the total nitrogen(TN)removal were 8.67%,1.48% and 0.72% respec-tively.Different carbon sources resulted in different denitrification process.The ratio of nitrate reduction to nitrite re-duction(N1/N2)in propionate system was the lowest,which indicated that there were a few of nitrite accumulated with the propionate as carbon source.At the same time,PHV was the main composition in total PHA in the mixed acid and propionate system.The increasing content of PHV declined the N2 O production.In conclusion,using propionate as car-bon source in denitrifying phosphorus removal systems had a significant advantage to reduce the production of N2 O, while the effect of this process on removal of nitrogen and phosphorus still needed to be further optimized.