交替好氧/缺氧短程硝化反硝化生物脱氮Ⅱ.过程控制模式的确定  

Alternating oxic-anoxic Shortcut Nitrification-Denitrification Ⅱ. Study on control mode

作　　者：高大文[1] 彭永臻[1] 王淑莹[2] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]北京工业大学环境与能源工程学院,北京100022

出　　处：《环境科学学报》2004年第5期769-775,共7页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金重点资助项目 ( 5 0 1 3 80 1 0 ) ;黑龙江省自然科学基金资助项目 (E0 2 3 0 )

摘　　要：对交替好氧 缺氧短程硝化反硝化生物脱氮工艺中曝气和搅拌时间的控制模式进一步研究 .结果表明 ,ORP(氧化还原电位 )和pH的一阶和二阶导数变化可以作为控制交替好氧和缺氧运行方式的过程控制参数 .在此基础上 ,建立了控制交替好氧和缺氧时间的过程控制模式 .按照所建立的过程控制模式对进水COD、氨氮和总氮浓度分别为 194 5 5～ 92 4 90mg·L-1,2 5 6 8～ 81 4 8mg·L-1和 36 4 6～ 90 5 5mg·L-1.的废水实施交替好氧 缺氧控制 ,经过 2个月的运行 ,COD、氨氮和总氮的下降率和去除率仍然保持在 90 % ,99%和 92 % .因此 ,交替好氧 缺氧短程硝化反硝化生物脱氮工艺控制模式是可行的 ,它不但科学地分配了好氧和缺氧时间 ,提高了反应速率 。On the basis of previous paper, this paper further studies the control mode for aeration and mixing time in biological nitrogen removal process via shortcut nitrification-denitrification under alternating oxic/anoxic conditions. The results showed that the variation of the first and the second derivative in ORP and pH curve could control alternating oxic/anoxic shortcut nitrification-denitrification. Therefore, the real-time control mode of alternating oxic/anoxic shortcut nitrification-denitrification is developed. The control mode could make efficient alternating oxic/anoxic shortcut nitrification-denitrification when influent COD, NH^+_4-N and TN were at 194.55～924.90?mg.L^(-1), 25.68～81.48?mg·L^(-1) and 36.46～90.55?mg·L^(-1). During the experimental period of two months, the removal rate of COD, NH^+_4-N and TN were more than 90%, 99% and 92% respectively. Conclusion, the real-time control mode of alternating oxic/anoxic shortcut nitrification-denitrification is feasible. It not only control oxic and anoxic time accurately, and improves reaction rates, but also builds foundation for fuzzy control.

关 键 词：生物脱氮技术 SBR 实时控制系统 反硝化 水处理工艺 污染物 COD 

分 类 号：X703[环境科学与工程—环境工程]