摘要
研究了两种典型负荷下(低负荷:F/M为0.05 kg/kg(以每kg污泥中有机物的质量计,下同),高负荷:F/M为0.25 kg/kg)纯氧曝气序批式活性污泥法处理废水时活性污泥胞外聚合物(EPS)和溶解性微生物产物(SMP)的变化情况,结果表明:控制曝气量为15 L/h,当F/M为0.05 kg/kg时,纯氧曝气使得出水SMP低于空气曝气。与空气曝气相比,纯氧曝气可减少EPS的产生。SMP随着EPS含量的增加而增加,两者呈显著的正相关(r=0.947)。
In this study,setting F/M at 0. 05 kg/kg to represent low load conditions and F/M at 0. 25 kg/kg to represent high load condition,the changes of extracellular polymeric substances（ EPS） and soluble microbial products（ SMP） under two typical loads were investigated when treating wastewater by activated sludge with pure oxygen aeration in sequencing batch reactor. The results showed that controlling aeration rate of 15 L/h,when F/M was 0. 05 kg/kg,the higher DO environment in pure oxygen aeration made the SMP lower than that of air aeration. Comparing with air aeration,the output of EPS under pure oxygen aeration decreased. The content of SMP improved with the increase of EPS,and there was a positive correlation between SMP and EPS（ r = 0. 947）.
出处
《环境工程》
CAS
CSCD
北大核心
2017年第11期66-70,共5页
Environmental Engineering
基金
江苏省自然科学基金项目(BK20171478)
江苏省环保科研课题(2013014)
关键词
纯氧曝气
胞外聚合物
溶解性微生物产物
序批式活性污泥法
负荷
pure oxygen aeration
extracellular polymeric substances
soluble microbial products
sequencing batch reactor activated sludge process
load
