pH冲击对磁性微氧活性污泥理化特性的影响

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陈睿1，马平1，蓝惠霞1,2*，兰善红3

 （1. 青岛科技大学 环境与安全工程学院，山东 青岛 266042；

2. 南京林业大学 江苏省制浆造纸科学与技术重点实验室，江苏 南京 210037；

3.东莞理工学院 化学与环境工程学院，广东 东莞 523808）

 摘要： 研究了pH冲击对处理低负荷葡萄糖废水的磁性微氧活性污泥理化特性的影响。在pH=60和90的条件下对添加磁粉和无磁粉反应器微氧活性污泥进行15 d的冲击，而后调整pH=75进行5 d的恢复实验。对pH冲击下污泥理化指标SVI（污泥指数）、MLSS（污泥浓度）以及絮凝性能的变化情况进行考察，结果表明有磁粉反应器的各项指标均优于无磁粉反应器。经过5 d的恢复实验，添加磁粉反应器污泥的理化指标均能恢复到接近初始值，而无磁粉反应器性能难以恢复到接近初始值。

 关键词： pH冲击； 磁性； 微氧活性污泥； 理化特性

 中图分类号： X 793文献标志码： A

 收稿日期： 20130528

基金项目： 江苏省制浆造纸科学与技术重点实验室开放基金项目（201314）；广东省教育部产学研结合项目（2012B091100496）；东莞市科技计划项目(2011108102005).

作者简介： 陈睿(1986—)，男，硕士研究生.*通信联系人.

 Effect of pH Shock on Physicochemical Characteristics of Magnetic MicroAerobic Activated Sludge

 CHEN Rui1, MA Ping1, LAN Huixia1,2, LAN Shanhong3

 (1.College of Environment and Safety Engineering,QingdaoUniversityof Science and Technology,Qingdao266042,China;

2.JiangsuProvincial Key Laboratory of Pulp and Paper Science and Technology,NanjingForestryUniversity,Nanjing210037,China;

3.College of Chemistry and Environmental Engineering,DongguanUniversityof Technology, Dongguan 523808,China)

 Abstract: The effect of pH shock on the physicochemical characteristics of the magnetic microaerobic activated sludge used to deal with low load glucose wastewater was studied. The microaerobic activated sludges in the reactor with magnetic powder and the reactor without magnetic powder, were shocked under the condition of pH=60 and 90 for 15 d. Then the recovery experiments were taken at pH=75 for 5 d. After pH shock, SVI， MLSS and the flocculation performance of the sludge were analyzed. And the results showed that all the indicators of the reactors with magnetic powder were superior to that of the reactor without magnetic powder. After recovery experiments for 5 d, the physicochemical indicators of the sludge that was in the reactors with magnetic powder could recovered to the original value, but the indicators of the sludge that was in the reactors without magnetic powder could not recovered to the original value.

Key words: pH shock; magnetic; microaerobic activated sludge; physicochemical characteristics