SBBR处理低盐污水同步硝化反硝化性能研究  

Study on Performance of Simultaneous Nitrification and Denitrification in a SBBR Reactor Treating Low-Salinity Wastewater

作　　者：张磊[1] 刘如玲 张晓玲[1] 刘哲[1] 佘宗莲[1] 

机构地区：[1]中国海洋大学海洋环境与生态教育部重点实验室,环境科学与工程学院,山东青岛266100 [2]青岛市团岛污水处理厂,山东青岛266002

出　　处：《中国海洋大学学报（自然科学版）》2016年第4期103-108,共6页Periodical of Ocean University of China

基　　金：国家水体污染控制与治理科技重大专项项目(2014ZX07203-008)资助~~

摘　　要：采用流化床填料序批式生物膜反应器（SBBR）,考察了低盐度对同步硝化反硝化脱氮性能的影响。结果表明,在试验盐度范围内（0.15-1.00）,提高盐度对CODCr的降解影响很小,去除率都接近90%;氨氮去除率在0.45盐度时达到最大,为90.1%,当盐度提高到0.60和1.00时,氨氮去除率分别下降到88.4%和87.3%,NO2^--N浓度明显上升,亚硝酸盐积累率由不足10%分别提高到14%和35%;在每个盐度下TN去除率都在70.0%以上,发生了同步硝化反硝化现象,并且在0.15-0.45的盐度范围内,同步硝化反硝化率（ESND）与盐度呈正相关。当盐度〉0.45时,ESND开始下降,SBBR的同步硝化反硝化过程受到抑制。The performance of nitrogen removal via simultaneous nitrification and denitrification was investigated at low salinity in a sequencing batch biofilm reactor（SBBR）packed with suspended carriers.The results showed that improving salinity had little effect on the degradation of CODCrin the salinity range from 0.15 to 1.00,and the CODCrremoval efficiency was about 90%.The removal efficiency of ammonia nitrogen achieved the highest of 90.1at 0.45 salinity.When salinity increased to 0.60and1.00,the removal efficiency of ammonia nitrogen were decreased to 88.4%and 87.3%respectively,due to the slight inhibition of ammonia oxidizing bacteria.The concentration of NO-2-N increased significantly with the increase of salinity from 0.45 to 0.60 and 1.00,and nitrite accumulation rate were increased to 14%and 35%from less than 10%.This result showed that the nitrite oxidizing bacteria were suppressed obviously at the salinity of 1.00,compared with that at the salinity of 0.45.TN removal efficiency was above 70% at all salinity tested in this study,indicating high efficiency of nitrogen removal through simultaneous nitrification and denitrification.When influent salinity was within the range of0.15-0.45,the SND efficiency increased with the increase of the salinity.When salinity was higher than 0.45,the SND efficiency declined with the raise of salinity,indicating the inhibition of SND.

关 键 词：盐度 SBBR 同步硝化反硝化 生物脱氮 

分 类 号：X703[环境科学与工程—环境工程]