反硝化细菌对零价铁表面的影响

The Effect of Denitrify Microbes on ZVI Surface

作为一种标准的地下水污染原位修复技术,限制零价铁渗透反应格栅技术(ZVI PRB)在地下水污染修复中广泛应用的一个关键瓶颈就是ZVI表面的钝化问题。本文通过批实验,研究了反硝化细菌(DNBE)存在下ZVI表面氧化膜的变化。通过研究发现,DNBE的存在对ZVI表面成分和形态结构会产生影响,进而影响其反应活性,加速其钝化过程。

As a standard groundwater remediation technology, the key problem that inhibits the effective of the zero - valent iron permeable reactive barrier is the passivation of iron. Batch - type experiment was used to investigate the change of the oxide layer on ZVI surface with DNBE presence. It was found that DNBE could affect the surface of the iron and make effect on the reduction ability, and increasing the passivate process.