重金属对A/O生物脱氮系统的毒性影响

Poison influence of heavy metal on A/O biology system

介绍了AB工艺发展概况、A/O系统的原理,列举了某试验污水中常见重金属的含量.在利用A/O工艺处理该污水过程中,分析了常见重金属离子对亚硝化细菌的毒性影响.在相应的运行控制条件下.通过中试运行效果得出结论:对于含较高质量浓度重金属的城市污水,用A/O工艺进行生物脱氮在技术上是可行的,经过驯化的硝化菌、反硝化菌尚能忍受较高的重金属质量浓度;在合适的条件下,可获得良好的脱氮效果.该工艺能满足此污水处理厂的功能要求.

After the introduction of the development of AB process and the principle of A/O system, the content of common heavy metal in experimental sewage is listed. The poisonous influence of common heavy metal ion on nitrosobacteria in the process of sewage treatment by A/O process has been analyzed. The result of midscale experiment indicates that it is feasible to denitrify biology with A/O process for sewage with high heavy metal concentration. The acclimated nitrobacteria and denitrifying bacteria can fit the high concentration of heavy metal, which can obtain fairly good denitrifying result in proper conditions. So A/O process is suitable for this sewage treatment plant.