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玻纤管动态膜生物反应器短程硝化反硝化去除污染物
Removal of contaminants by shortcut nitrification and denitrification in a fiberglass tube membrane bioreactor
投稿时间:2017-11-22  
DOI:10.12030/j.cjee.201711161
中文关键词:  玻纤管  动态膜生物反应器  生活污水处理  短程硝化反硝化  膜污染
英文关键词:glass fiber tube  dynamic membrane bioreactor  sewage treatment  shortcut nitrification and denitrification  membrane fouling
基金项目:国家水体污染控制与治理科技重大专项(2014ZX07305001-007)
作者单位E-mail
涂凌波 宁波大学建筑工程与环境学院宁波 315211 790621215@qq.com 
黄怡然 宁波大学建筑工程与环境学院宁波 315211  
王冰洁 宁波大学建筑工程与环境学院宁波 315211  
王金辉 宁波大学建筑工程与环境学院宁波 315211  
涂永辉 上海交通大学环境科学与工程学院上海 200240  
朱建林 宁波大学建筑工程与环境学院宁波 315211  
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中文摘要:
      利用玻纤管作为膜组件材料制作了一套动态膜生物反应器(DMBR),并结合A/O工艺组成DMBR -A/O污水处理装置,研究了其在全程硝化反硝化(阶段I)和短程硝化反硝化(阶段II)条件下对生活污水的处理效果、膜污染状况及恢复膜通量的措施。结果表明:当运行通量为15 L·(m2·h)-1时,阶段I可连续运行15 d,而阶段II可连续运行30 d;水力停留时间为8 h时,阶段I、II对COD、NH4+-N去除率均大于85%,差别不明显,但对TN的去除率分别为58%和75%。因此,与全程硝化反硝化相比,短程硝化反硝化可显著缓解膜污染,并可显著提高脱氮效率。此外,被污染后的膜组件经水力冲洗和0.05%NaClO溶液浸泡12 h后,几乎能够完全恢复膜组件性能。
英文摘要:
      With glass fiber tubes as membrane material, a set of dynamic membrane bioreactor-anaerobic/oxidic sewage treatment device (DMBR-A/O) was constructed, and the performance of the device for sewage treatment was researched under full nitrification/denitrification (stage I) and shortcut nitrification/denitrification (stage II) conditions, respectively. The results showed that stage II had been continuously running for 30 d while stage I was only 15 d with the membrane flux of 15 L·(m2·h)-1. And the average removal rates of COD, NH4+-N were above 85% for both the two stages with unobvious differences under HRT 8 h. However, the average TN removal rate of stage I and stage II were 58% and 75%, respectively. Therefore, it is indicated that shortcut nitrification/denitrification technology was obviously effective for membrane pollution mitigation and TN removal. In addition, the performance of fouled membrane component could be almost completely recovered by hydraulic cleaning and soaking with 0.05% NaClO solution for 12 h.
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