CAJ | 학술논문

为了研究缺氧(75 min).好氧(294 min)交替运行的SBR系统中除磷的原因,采用静态实验,对比了不同碳源、水质及运行环境下对磷的去除情况.实验结果表明,该SBR脱氮系统中的好氧段磷的减少是生物去除的结果.当供给碳源为丙酸.乙酸混合物(摩尔比为2:1)、葡萄糖、淀粉或蛋白胨时,污泥都可将磷去除,去除效率依次降低;COD/NO_3~--N 为8.77:1(400 mg/L:45.6 mg/L)时除磷效果明显好于5.41:1(400 mg/L:73.9 mg/L)和3.57:1(400 mg/L:112 mg//L);进水磷浓度为8 mg/L时,COD由50 mg/L增加到400 mg/L,污泥对磷的去除效果基本一样;完全的缺氧或完全的好氧环境下,污泥对磷的去除能力逐渐丧失.
위료연구결양(75 min).호양(294 min)교체운행적SBR계통중제린적원인,채용정태실험,대비료불동탄원、수질급운행배경하대린적거제정황.실험결과표명,해SBR탈담계통중적호양단린적감소시생물거제적결과.당공급탄원위병산.을산혼합물(마이비위2:1)、포도당、정분혹단백동시,오니도가장린거제,거제효솔의차강저;COD/NO_3~--N 위8.77:1(400 mg/L:45.6 mg/L)시제린효과명현호우5.41:1(400 mg/L:73.9 mg/L)화3.57:1(400 mg/L:112 mg//L);진수린농도위8 mg/L시,COD유50 mg/L증가도400 mg/L,오니대린적거제효과기본일양;완전적결양혹완전적호양배경하,오니대린적거제능력축점상실.
In order to investigate the phosphorus removal in a SBR operated with anoxic(75 min)and aerobic(294 min) cycle,batch tests with different carbon sources,different C/N ratios and C/P ratios as well as different operating modes were carried out.The results showed that the phosphorus removal of the sludge was a biological process.The best phosphorus removal was achieved when the mixture of propionic acid and acetic acid (mol ratio was 2 to 1) was supplied as carbon source,followed by glucose,starch,and peptone.Phosphorus removal efficiency with C/N ratio of 8.77:1(i.e.,400 mg/L to 45.6 mg/L) was higher than that of 5.41:1(i.e.,400 mg/L to 73.9 mg/L) and 3.57:1(i.e.,400 mg/L to 112 mg/L).When the concentration of phosphorus in the influent was 8 mg/L,the concentration of COD varied from 50 mg/L to 400 mg/L,had no effect on the phosphorus removal efficiency.The ability of phosphorus removal gradually disappeared under complete anoxic or aerobic condition without alternation.