SMSBR处理焦化废水中的短程硝化反硝化  

Study on the Short-cut Nitrification and Denitrification in Coke Plant Wastewater Treatment by Using Submerged Membrane Sequencing Batch Reactor

作　　者：李春杰[1] 耿琰[2] 周琪[2] 顾国维[2] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2001年第11期8-12,共5页China Water & Wastewater

基　　金：高等院校博士点基金项目 (5 5 2 - 0 40 0 - 2 32 0 0 9)

摘　　要：采用一体化膜—序批式生物反应器 (SubmergedMembraneSequencingBatchReactor ,简称SMSBR)处理焦化废水的过程中获得了稳定、高效的短程硝化作用 ,平均亚硝化率 (NO2 -N/NOX-N)为 91.1% ,并通过试验证实了这是由于泥龄太长所产生的微生物代谢产物抑制了硝化反应过程中的硝酸盐细菌的结果。在试验运行初期 ,由于泥龄短使微生物代谢产物未得到充分积累 ,硝化过程进行得非常彻底 ;然后在高效短程硝化的基础上进行反硝化 ,当反硝化负荷 <0 .174kgNOX-N/ (kgSS·d)、HRT >8.4 4h时 ,可实现 81.34 %的反硝化率 ,此时外加碳源的COD∶N为 2 .1∶1。The short-cut nitrification can be attained efficiently and steadily in coke plant wastewater treatment by using submerged membrane sequencing batch reactor (SMSBR), with an average nitrosation rate (NO 2-N/NO x-N) of 91.1%. The experimental results show that long SRT has resulted in the inhibition of nitrate bacteria caused by the metabolic products of microorganism. In the initial stage of experiment, the metabolic products are not adequately accumulated due to short SRT and nitrification is carried out in a complete way. And then denitrification occurs based on the efficient and short-cut nitrification. When denitrification loading is < 0.174 kg NO x-N/(kg SS·d) and HRT > 8.44 h, denitrification rate of 81.34% can be achieved, with external carbon COD ∶N = 2.1∶1.

关 键 词：SMSBR 焦化废水 短程硝化 反硝化 

分 类 号：X784[环境科学与工程—环境工程]