摘要
以膜生物反应器(MBR)作为纳滤(NF)预处理工艺,研究了采用MBR-NF耦合工艺对内分泌干扰物——壬基酚聚氧乙烯醚(NPnEO,n=1～4)的去除效果以及在NPnEO的介入下工艺对于常规污染物的去除性能。结果表明,在系统进水NPnEO的平均质量浓度260μg.L-1的条件下,出水NPnEO的平均质量浓度1.4μg.L-1,去除率为99.4%,NPnEO的投加对工艺的COD、TN、TP的去除没有明显影响。采用先柠檬酸洗后NaOH碱洗相结合的清洗方式对NF膜进行周期性的清洗,可以有效控制膜污染。
The combined of MBR-NF process was used for advanced treatment of endocrine disrupter-nonylphenol polyethoxylates （NPnEO, n=1-4）. Membrane bioreactor was used for pretreatment of nanofiltration. The usual contaminant removal effect in the existence of NP,,EO was investigated too. The results showed that the concentration of NP,,EO in influent is averaged at 260 μg·L^-1, and 1.4 μg·L^-1 in the effluent, the removal rate is averaged at 99.4%, and the COD, TN, TP removal effect was not influenced. Critic acid cleaning first and NaOH cleaning second on nanofiltration membrane could control the membrane fouling effectively.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第5期107-110,共4页
Technology of Water Treatment
关键词
膜生物反应器
纳滤
壬基酚聚氧乙烯醚
膜污染
membrane bioreactor
nanofiltration
nonylphenol polyethoxylates
membrane fouling
