摘要：

以对硝基苯酚(PNP)为研究对象,探究了PNP初始浓度、pH、铁粉量等因素在缺氧微生物-铁粉共存条件下对PNP废水处理效果的影响。试验结果表明,在PNP初始质量浓度为100mg/L,pH为中性,铁粉投加量为2g/L的条件下,400min后耦合工艺对PNP的去除率达97.98%,远高于相同条件下2种单一工艺去除率的加和,可以快速高效地降解PNP。GC-MS研究发现,耦合反应的中间产物不同于经典微生物降解及传统铁粉降解的产物。

关键词: 对硝基苯酚, 铁粉, 缺氧微生物

Abstract:

p-Nitrophenol(PNP) is taken as the research object. The influences of the factors, such as the initial con-centration of PNP,pH,dosage of iron powder added,etc.,under an anoxic microorganism-iron powder coexistent condition,on the treatment effect of PNP wastewater are researched. The results show that when the conditions are as follows:PNP initial mass concentration is 100 mg/L,pH 7.04,iron powder dosage 2 g/L and after reacting for 400 min by the coupling technique,the PNP removing rate reaches 97.98%,which is far higher than that of the additivity of two other kinds of individual processes,and can rapidly and effectively degrade PNP. It is found via GC-MS that the intermediate product of the coupling reaction is different from the product of either classical microbial degradation or conventional iron powder degradation.

Key words: p-nitrophenol, iron powder, anoxic microorganism

中图分类号: 

• X703