CAJ | 학술논문

在5个SBR反应器(1~#～5~#)中,用乙酸、丙酸/乙酸(以C计)比例为0.5、2、10和丙酸的合成废水,通过厌氧,好氧工艺驯化活性污泥使之富集聚磷菌,研究了丙酸/乙酸比例对强化生物除磷系统(EBPR)中COD降解、溶解性正磷酸盐(SOP)的释放、吸收及其去除率的影响.结果表明,PAO对COD的降解符合一级动力学过程,PAO对丙酸的利用速率较乙酸快,因此,增加丙酸/乙酸比例有助于EBPR系统的稳定性.随丙酸巴酸比例增加,SOP的释放与吸收量减少,SOP的代谢速率降低,但SOP的去除率依次为88.2%,89.8%,92.2%,94.2%和95.2%,去除率增加了7%,因此增加丙酸/乙酸比例有助于提高EBPR系统除磷效率.
재5개SBR반응기(1~#～5~#)중,용을산、병산/을산(이C계)비례위0.5、2、10화병산적합성폐수,통과염양,호양공예순화활성오니사지부집취린균,연구료병산/을산비례대강화생물제린계통(EBPR)중COD강해、용해성정린산염(SOP)적석방、흡수급기거제솔적영향.결과표명,PAO대COD적강해부합일급동역학과정,PAO대병산적이용속솔교을산쾌,인차,증가병산/을산비례유조우EBPR계통적은정성.수병산파산비례증가,SOP적석방여흡수량감소,SOP적대사속솔강저,단SOP적거제솔의차위88.2%,89.8%,92.2%,94.2%화95.2%,거제솔증가료7%,인차증가병산/을산비례유조우제고EBPR계통제린효솔.
Five anaerobic-aerobic sequencing batch reactors were operated with PAOs activated sludge respectively with acetic acid, propionic to acetic acid carbon molar ratio of 0.5, 2, 10 and propionic acid. The influence of propionic/acetic acid ratio on COD degradation, as well as phosphorus release, uptake and removal dtLring enhanced biological phosphorus removal (EBPR) were investigated. Results showed that COD degradation followed the first order kinetics and uptake rate of propionic acid was faster than that of acetic acid, which indicated that a higher ratio of propionic/acetic acid promoted EBRP stability. With the increase of propionic/acetic acid ratio, the soluble ortho-phosphorus (SOP) release and uptake decreased. SOP removal efficiency was observed to increase from 88.2% to 95.2%. Higher ratio of propionic/acetic acid improved the phosphorus removal.