化工学报2016，Vol.67Issue(11)：4825-4836,12.DOI:10.11949/j.issn.0438-1157.20160980
部分短程硝化SBR实现低C/N比生活污水碳源的充分利用
Efficient organics utilization of low C/N ratio domestic sewage through partial nitritation SBR
摘要
Abstract
In order to efficiently utilize carbon source of low C/N ratio domestic sewage, two methods (reducing organics input and increasing carbon source consumption through denitrification) were introduced through the partial nitritation SBR. In this study, five factors,i.e. influent volume, drainage ratio, aeration time, precipitation time and stirring time after aeration were investigated to assess the effect on the utilization efficiency of carbon source(the ratio between the quality of carbon source consumption through denitrification and the total organics input). The results showed that when the drainage ratio was decreased from 50% to 35%, the utilization efficiency improved from 15.1% to 24.8%; when the aeration time was increased from 2 h to 2.25 h, the utilization efficiency increased from 24.8% to 27.5% and when 1.5 h of stirring time after aeration was added, the utilization efficiency increased by 3.8%. Meanwhile, the nitrite accumulation rate of the effluent was 94.8% and the24NO−-N/NH+-N was 1.7, indicating that the partial nitrification was stably maintained, and the effluent was more proper for simultaneous anammox and denitrification (SAD) process. All in all, the organics utilization efficiency was promoted gradually through the adjustment of the operational parameters above, by which the aeration energy for consuming organics was saved, and then the multiplication of aerobic heterotrophic bacteria was weakened which avoided striking the ammonia oxidizing bacteria (AOB) effectively, keeping the nitritation effect stable.关键词
部分短程硝化/低C/N比/生活污水/曝气/沉淀/排水/碳源利用率Key words
partial nitritation/low C/N ratio/domestic sewage/aeration/precipitation/drainage/organics utilization efficiency分类
资源环境引用本文复制引用
赵梦月,王博,郭媛媛,彭永臻..部分短程硝化SBR实现低C/N比生活污水碳源的充分利用[J].化工学报,2016,67(11):4825-4836,12.基金项目
国家自然科学基金项目（51478013）；北京市教委资助项目。@@@@Foundation item：supported by the National Natural Science Foundation of China (51478013) and the Funding Projects of Beijing Municipal Commission of Education （51478013）
