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  • 李津,于德爽,王琪,李烨,任晓晶.MBR工艺处理含50%海水的污水试验研究[J].环境工程学报,2009,3(11):1947-1950.DOI:    [点击复制]
  • Li Jin,Yu Deshuang,Wang Qi,Li Ye,Ren Xiaojing.Experimental study on treatment of wastewater containing 50% seawater by MBR process[J].,2009,3(11):1947-1950.DOI:   [点击复制]
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MBR工艺处理含50%海水的污水试验研究
李津1, 于德爽2, 王琪1, 李烨1, 任晓晶1
0
(1.中国科学院生态环境研究中心环境水质学国家重点实验室,北京 100085;2.青岛大学化学化工与环境学院,青岛 266071)
摘要:
采用MBR工艺对含50%海水的污水生物处理进行了试验研究。实验条件为进水COD为300~2 600 mg/L,NH3-N为50~300 mg/L,pH值为6~9,混合液污泥浓度为7 000 mg/L,溶解氧浓度为2~4 mg/L,温度为20~25℃。试验结果表明,系统的最佳运行条件为:有机负荷<3.2 kg COD/(m3·d),氨氮负荷<0.35 kg/(m3·d),pH值在7.5~8.5之间,HRT>12 h。在此条件下,COD与氨氮的去除率可同时达到90%。高盐环境下微生物所分泌的大量胞外多聚物是造成MBR工艺处理含盐废水过程中膜污染的主要原因。
关键词:  MBR工艺  有机负荷  氨氮负荷  pH值  HRT  膜污染
DOI:
投稿时间:2008-11-24修订日期:2009-05-17
基金项目:国家自然科学基金资助项目(50678085)
Experimental study on treatment of wastewater containing 50% seawater by MBR process
Li Jin1, Yu Deshuang2, Wang Qi1, Li Ye1, Ren Xiaojing1
(1.State Key Laboratory of Environmental Aquatic Chemistry, Research Center for EcoEnvironmental Sciences, Chinese Academy of Sciences, Beijing 100085,China;2.School of Chemical and Environmental Engineering,Qingdao University,Qingdao 266071,China)
Abstract:
MBR process is used to treat wastewater containing 50% seawater under the conditions as belows: COD is 300~2 600 mg/L,NH3-N is 50~300 mg/L,pH is 6~9,MLSS is 7 000 mg/L,DO is 2~4 mg/L,temperature is 20~25℃.The results show that both COD and NH3-N removal can reach 90% under the best conditions as belows: organic loading and ammonia loading are less than 3.2 kg COD/(m3·d) and 0.35 kg/(m3·d) respectively, pH is between 7.5 and 8.5, HRT is more than 12 h. The extracellular polymeric substances(EPS) which are excreted by microorganism devote to membrane fouling largely in the process.
Key words:  MBR process  organic loading rates  ammonia loading rates  pH  HRT  membrane fouling